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1 Capability Matrix

2 Please click on any of the blue or green circles contained in the matrix below to progress to more specific CVI Infrared Optics capability Optical components Optical Glass Silicon Ge ZnS ZnS(M) ZnSe Chalcogenides Sapphire CaF 2 MgF 2 GaAs Lenses Beamsplitters Windows Window Assemblies Heated Window Assemblies Domes Dome Assemblies IR Detector Filters / Windows 3-6µm A/R 3-6µm L/S WP 3-6µm NBP 7-12µm A/R 7-12µm L/S WP 7-12µm NBP Metallising Detector Filters Detector Windows CVI Infrared Optics is the trading name of CVI Laser Ltd in the UK. The company is part of the IDEX Optics and Photonics Group. Strong capability Moderate capability No current capability

3 INFRARED, VISIBLE AND MULTISPECTRAL WINDOWS AND DOMES TYPES External IR windows and domes External visible windows and domes Heated window assemblies EMC screened window assemblies Dome assemblies Detector windows MATERIALS MAXIMUM DIMENSIONS Windows: up to 4mm diameter / diagonal Domes: up to 4mm diameter Optical glasses COATINGS FOR: ONGOING DEVELOPMENT Development work continues to add to CVI s range of high durability coatings, in particular to increase the salt and abrasion resistance of external surfaces. Other development activities include improvements in electrically conductive coatings and bus-barring to enhance the performance of heated window assemblies for demisting and de-icing. The company is also developing advanced masking techniques for precision placement of coatings CVI manufactures customised optical components. This datasheet is intended as a guide to our capabilities. Please contact us if your requirement is not coverered by this information. TYPICAL TOLERANCES Dimensional:.1mm Surface figure: 2 fringes power x.5 fringe irregularity Transmitted wavefront error: we have the capability of measuring at 1.6µm over a 26mm diameter aperture and 152mm dia in the visible. Parallelism: 3 arc seconds Edge thickness variation (domes):.5mm Please click on any of the symbols to proceed Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page

4 INFRARED AND MULTISPECTRAL BEAMSPLITTERS TYPES Visible reflection / IR transmission IR reflection / Visible Split laser λ from TI bands 5/5 split of a single λ or λ band MATERIALS MAXIMUM DIMENSIONS Depend on beamsplitter type. Please call CVI for further details. Optical glasses COATING TYPES CVI beamsplitters are custom designed. CVI manufactures customised optical components. This datasheet is intended as a guide to our capabilities. Please contact us if your requirement is not coverered by this information. TYPICAL TOLERANCES Dimensional:.1mm Surface figure: 2 fringes power x.5 fringe irregularity Transmitted wavefront error: we have the capability of measuring at 1.6µm over a 26mm diameter aperture and 152mm dia in the visible. Parallelism: 3 arc seconds Please click on any of the symbols to proceed Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page

5 LENSES TYPES Biconvex Plano-convex Convex-concave Meniscus Plano-concave Biconcave Spherical Aspheric Diffractive MATERIALS MAXIMUM DIMENSIONS Up to 3mm diameter COATINGS FOR: TYPICAL TOLERANCES Dimensional:.1mm Surface figure: 2 fringes power x.5 fringe irregularity Centration: 1 arc minute CVI manufactures customised optical components. This datasheet is intended as a guide to our capabilities. Please contact us if your requirement is not coverered by this information. Please click on any of the symbols to proceed Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page

6 FILTERS TYPES Long and shortwave pass filters Bandpass filters Wavelength range.7 to 2µm Edge metallising Filter assemblies MATERIALS Glass / Filter glasses MAXIMUM DIMENSIONS Typical dimensions: Up to 2mm diameter or square Metal layers for edge soldering: Gold Nickel Chrome Titanium COATING TYPES TYPICAL TOLERANCES Spectral position: ±.5% Dimensional tolerances: ±.1mm CVI manufactures customised optical components. This datasheet is intended as a guide to our capabilities. Please contact us if your requirement is not coverered by this information. Please click on any of the symbols to proceed Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page

7 TEST EQUIPMENT Zygo interferometer Smartscope MVP 3 LUPI 1.6µm laser unequal path 26mm dia aperture interferometer Spectrophotometers Humidity chamber Salt spray chamber Temperature cycling chambers Windscreen wiper test facilities LENSES WINDOWS/DOMES BEAMSPLITTERS FILTERS Smartscope MVP 3 measuring system Zygo Phase-Shifting Interferometers with Metro Pro Software: for measuring flatness and form error Perkin Elmer Spectrophotometers: for measuring spectral characteristics PRODUCTION EQUIPMENT

8 PRODUCTION EQUIPMENT Peter Wolters Polisher Lapmaster Coating chambers Thermal evaporation Electron beam deposition Ion assisted deposition Advanced plasma source Chemical vapour deposition RF Sputtering Conventional Polishing System Schneider CNC polisher Diamond Turning Machines LENSES WINDOWS/DOMES BEAMSPLITTERS FILTERS Lapmaster 48 inch Polishing Systems: for flat-polishing Peter Wolters Twin-Sided Polishing Systems: for lapping and flat-polishing large or high volume optics Schneider CNC Polishing System: for high-speed polishing of spherical surfaces Diamond-turning machines for production of aspheric and diffractive surfaces Coating Chambers: 7 chambers of various sizes and configurations for a variety of infrared and visible coating types

9 GERMANIUM Ge Germanium is a broad band infrared transmitting material. It is useful for optical components operating in the mid- and far-infrared regions MATERIAL PROPERTIES OPTICAL PROPERTIES Bulk 1.6µm <.27 cm -1 Reflection Loss at 11µm (Two surfaces) 53% Refractive Index at 11µm 4.26 Temp change in Refractive Index 3.9 x 1-4 K -1 THERMAL PROPERTIES Thermal Conductivity at 2 C W m -1 K -1 Specific Heat J Kg K -1 Thermal Expansion x 1 K -1 at 2K MECHANICAL PROPERTIES Youngs Modulus Rupture Modulus Shear Modulus noop Hardness Poisson Ratio 12.7 GPa 93 Mpa 67 GPa 78 Kg/mm.28 K -1 Ge polished window 2mm path length The above technical information is supplied as an introductory outline only. We do not recommend that this data be relied upon without independent verification of suitability.

10 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page Coatings for GERMANIUM Ge All CVI Infrared Optics coatings are now radioactive-free

11 CO 44 Ge 8-12 Hard Carbon antireflection coating for Germanium 8-12µm This coating is designed for outer surface (O.S.) applications where severe environmental conditions are likely to be encountered Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which The coating will be will carried withstand out on the representative following environmental witness piece tests coated which will in the be same carried batch. out on a representative witness piece coated in the same batch. ADHESION MIL-C para ADHESION TS1888 MIL-C para para TS1888 para 5.1 HUMIDITY MIL-C para HUMIDITY 7 days TS1888 MIL-C para para days TS1888 para ABRASION windscreen ABRASION wiper windscreen wiper TS1888 (O.S) TS1888 (O.S) para para SALT FOG 24 SALT hours FOG MIL-STD-81C MIL-STD-81C para 59.1 para hours The coating will operate under conditions such as: exposed optical surfaces of hand-held or vehicle-mounted thermal imaging systems; exposed optical surfaces of airborne or naval FLIR systems; exposed window surfaces where windscreen wiper or chemical attack is to be endured. Transmission values are for a 1mm thick Germanium substrate which has been coated on one surface with CO 44 and on the second surface with CO 49 (High Efficiency coating). TRANSMISSION > 9% (average) from µm Reflection values are for a single Germanium surface coated with CO 44. REFLECTION < 3% (average) from µm

12 CO 44E Ge 8-12 Hard Carbon antireflection coating with enhanced salt resistance for Germanium 8-12µm This coating is designed for outer surface (O.S.) applications where severe environmental conditions, particularly salt spray and salt fog, are likely to be encountered Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para days TS1888 para ABRASION TS1888 (O.S.) para Windscreen wiper para SALT FOG MIL-STD-81C para days The coating is designed for such applications as: exposed optical surfaces of hand-held or vehicle-mounted thermal imaging systems; exposed optical surfaces of airborne or naval FLIR systems; exposed window surfaces where windscreen wiper or chemical attack is to be endured. Transmission values are for 1mm thick Germanium substrate which has been coated on one surface with CO 44E and on the second surface with CO 49 (High Efficiency coating). TRANSMISSION > 9% (average) from µm Reflection values are for a single germanium surface coated with CO 44. REFLECTION < 3% (average) from µm

13 CO 45EN Ge 8-12 High durability antireflection coating for Germanium 8-12µm This coating is designed for modular interface surface (M.I.S.) applications where maximum external durability is required whilst maintaining high transmission Transmission values are for a 1mm thick Germanium substrate which has been coated on both surfaces with CO 45EN. TRANSMISSION > 97% (average) from µm Reflection values are for a single Germanium surface coated with CO 45EN. REFLECTION <.5% (average) from µm (typical) Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para hours TS1888 para ABRASION MIL-C para TS1888 para SALT SOLUTION MIL-C para TS 1888 para SALT FOG MIL-STD-81C para hours

14 CO 48 Ge Dual band Dual band antireflection coating for Germanium 3-5µm and 8-12µm Transmission Wavelength Wavelength µm - nm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Reflection This coating is designed for applications requiring transmission in both thermal imaging spectral bands. Transmission values are for a 1mm thick Germanium substrate which has been coated on both surfaces with CO 48 TRANSMISSION > 95% (average) from 3-5µm TRANSMISSION > % (average) from 8-12µm Reflection values are for a single Germanium surface coated with CO 48. REFLECTION < 2% (average) from 3-5µm REFLECTION < 2% (average) from 8-12µm ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para hours TS1888 para ABRASION MIL-C para TS1888 para SALT SOLUTION MIL-C para TS1888 para SALT FOG MIL-STD-81C para hours

15 CO 49 Ge 8-12 High efficiency antireflection coating for Germanium 8-12µm This coating is designed for internal surface (I.S.) applications and offers maximum transmission combined with low reflection Typically used in thermal imaging systems Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para Transmission values are for a 1mm thick Germanium substrate which has been coated on both surfaces with CO 49. TRANSMISSION > % (average) from µm TRANSMISSION > % (absolute) from µm TRANSMISSION > % (average) from µm Reflection values are for a single Germanium surface coated with CO 49. REFLECTION <.9% (average) from 7.5-8µm REFLECTION <.3% (average) from µm REFLECTION < 1.3% (average) from µm ABRASION MIL-C para TS1888 para This coating is also unaffected by the following environmental tests which will be performed upon request. SALT SOLUTION MIL-C para TS1888 para TEMPERATURE CYCLE MIL-M-1358C para

16 CO 41 Ge 3-5 Hard carbon antireflection coating for Germanium 3-5µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para This coating is designed for outer surface (O.S.) applications where severe environmental conditions are likely to be encountered. Optimised for the nominal 3-5µm waveband, transmission is peaked at a specific wavelength within this band, normally specified by the end user. The coating will operate under conditions such as: exposed optical surfaces of hand-held or vehicle mounted thermal imaging systems, exposed optical surfaces of airborne or naval FLIR systems, exposed window surfaces where windscreen wiper or chemical attack is to be endured. Transmission values are for a 1mm thick Germanium substrate which has been coated on one surface with CO 41 and on the second surface with CO 429 (High Efficiency coating). TRANSMISSION > % (average) from 3-5µm TRANSMISSION > % (at peak wavelength) within 3-5µm Reflection values are for a single Germanium surface coated with CO 41. REFLECTION < 3.% (average) from 3-5µm HUMIDITY MIL-C para days TS1888 para ABRASION TS1888 (O.S) para windscreen wiper SALT Fog MIL-STD-81C para hours

17 CO 416 Ge 3. to 14.µm Broad band antireflection coating for Germanium 3. to 14.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. This coating is designed for dual band thermal imaging systems. Average Transmission 93% 3. to 13.µm Average Reflectance 4.% 3. to 13.µm Transmission values are a for a 1mm thick Germanium substrate which has been coated on two surfaces with CO416. Reflection values are for a single Germanium surface coated with CO416. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

18 CO 419 Ge 8-12 High durability antireflection coating for Germanium 8-12µm This coating is designed for modular interface surface (M.I.S.) applications where maximum durability is required whilst maintaining high transmission Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch Transmission values are for a 1mm thick Germanium substrate which has been coated on one surface with CO 419 and on the second surface with CO 49 (high efficiency coating). TRANSMISSION > % (average) from µm Reflection values are for a single Germanium surface coated with CO 419. REFLECTION <.5% (average) from µm ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para SALT SOLUTION MIL-C para TS 1888 para TEMPERATURE CYCLE MIL-M-1358C para 4.4.4

19 CO 429 Ge 3-5µm High efficiency antireflection coating for Germanium 3. to 5.µm This coating is designed for optimum performance of thermal imaging systems in the 3. to 5.µm region Transmission % average 3. to 5.µm 93 3 Reflectance <.5% average for 3. to 5.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

20 CO 441 Ge 7.5 to 1.5µm High efficiency antireflection coating for Germanium 7.5 to 1.5µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. 1 This coating is designed for optimum spectral performance in the 7.5 to 1.5µm region. Average Transmission.5% 7.5 to 1.5µm Average Transmission.5% 7.5 to 1.5µm Average Reflectance.3% 7.5 to 1.5µm Transmission values are a for a 1mm thick Germanium substrate which has been coated on two surfaces with CO441. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Reflection values are for a single Germanium surface coated with CO441 ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para MILD ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

21 CO 444 Ge 3.5-5µm High efficiency antireflection coating for Germanium 3.5 to 5.µm This coating is designed for systems optimised for the 3.5 to 5.µm waveband Average Transmission.5% 3.5 to 5.µm 93 3 Absolute Transmission.% 3.5 to 5.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Average Reflectance.3% 3.5 to 5.µm Absolute Reflectance.75% 3.5 to 5.µm Transmission values are a for a 1mm thick Germanium substrate which has been coated on two surfaces with CO444. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Reflection values are for a single Germanium surface coated with CO444 ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

22 CO 49 Ge µm and 8.2 to 9.3µm Dual band antireflection coating for Germanium 3.8 to 5.µm and 8.2 to 9.3µm This coating is designed for dual band thermal imaging systems Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para T.25% Average 3.8 to 5.µm T 97.% Absolute 3.8 to 5.µm T.5% average 8.2 to 9.3µm T 97.5% absolute 8.2 to 9.3µm R < 2%(average) from 3.5µm to 5.µm R < 2%(average) from 7.5µmto 1.5µm Transmission values are a for a 1mm thick Germanium substrate which has been coated on two surfaces with CO49. Reflection values are for a single Germanium surface coated with CO49.

23 SILICON Si Silicon is a broad band infrared transmitting material. It is useful for optical components operating in the mid-infrared region MATERIAL PROPERTIES CZ 5mm FZ 5mm CZ 1mm CZ 2mm FZ 3mm Czochralski grown (CZ) Typical absorption band at 9 micron Small absorption at 5.8 micron Float Zone (FZ) Reduces these absorptions OPTICAL PROPERTIES Bulk 3µm <.1 cm -1 Reflection Loss at 5µm (Two surfaces) 46.2% Refractive Index at 5µm Change in Refractive Index with Temperature 16 x 1-6 K -1 THERMAL PROPERTIES Thermal Conductivity at C W m -1 K -1 Specific Heat J Kg K -1 Thermal Expansion 4.15 x 1-6 K -1 at 2K MECHANICAL PROPERTIES Youngs Modulus Rupture Modulus Shear Modulus noop Hardness Poisson Ratio 131 GPa 125 MPa 67 GPa 115 kgf mm.266 K -2 The above technical information is supplied as an introductory outline only. We do not recommend that this data be relied upon without independent verification of suitability.

24 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page Coatings for SILICON Si All CVI Infrared Optics coatings are now radioactive-free

25 CO 344 Si 3-5 Hard Carbon antireflection coating for Silicon 3-5µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para days TS1888 para ABRASION TS1888 (O.S) para windscreen wiper SALT FOG MIL-STD-81C para hours This coating is designed for outer surface (O.S.) applications where severe environmental conditions are likely to be encountered. Optimised for the nominal 3-5µm waveband, transmission is peaked at a specific wavelength within this band, normally specified by the end user. The coating will operate under conditions such as: exposed optical surfaces of hand-held or vehicle mounted thermal imaging systems, exposed optical surfaces of airbourne airborne or naval FLIR systems, exposed window surfaces where windscreen wiper or chemical attack is to be endured. Transmission values are for a 1mm thick Silicon substrate which has been coated on one surface with CO 344 and on the second surface with CO 3429 (High Efficiency coating). TRANSMISSION > % (average) from 3-5µm TRANSMISSION > % (at peak wavelength) within the 3-5µm band Reflection values are for a single Silicon surface coated with CO 344 REFLECTION < 3.% (average) from 3-5µm This coating can be adapted to meet the spectral requirements of specific application

26 CO 3429 Si 3-5µm High efficiency antireflection coating for Silicon 3. to 5.µm This coating is designed for optimum performance of thermal imaging systems in the 3. to 5.µm region Transmission % average 3. to 5.µm 93 3 Reflectance <.5% average for 3. to 5.µm Transmission values are a for a 1mm thick Si substrate which has been coated on two surfaces with CO Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Reflection values are for a single surface coated with CO3429. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

27 CO 3435 Si 3-5 High durability antireflection coating for Silicon 3-5µm This Salt Tolerant Anti Reflection (STAR) coating is designed for use on the external surface of lenses and windows that are exposed to harsh (in particular, marine) environments, in those cases where the residual reflectance and lower transmittance of hard carbon (CO 344) is undesirable Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Coated one side with CO3435 and the other with CO3429 The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para SOLUBILITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para SALT FOG MIL-STD-81F method 59.4 In addition the coating can be designed to match the response curve of particular detectors in order to minimise narcissus. Transmission values are for a 1mm thick Silicon substrate which has been coated on one surface with CO 3435 and on the second surface with CO 3429 (High Efficiency Coating) TRANSMISSION > 97.5% (average) from 3-5µm, or > % (average) from 3.5 5µm Reflection values are for a single Silicon surface coated with CO 3435 REFLECTANCE <.5% (average) from 3 5µm, or <.3% (average) from 3.5 5µm * Exception: this coating withstands 1 days continuous salt fog exposure without the drying steps.

28 CO 3437 Si µm Salt fog resistant antireflection coating for Silicon 3.5 to 5.µm This coating is designed for external surfaces of 3.5 to 5.µm Silicon components exposed to a salt environment Transmission % average 3.5 to 5.µm 2 Reflectance.3% average for 3.5 to 5.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Coated one side with CO3437 and the other with CO Transmission values are a for a 1mm thick Si substrate which has been coated on one surface with CO3437 and on the second surface with CO3429. Reflection values are for a single surface coated with CO3437. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para SALT FOG 6 DAYS (<2% T LOSS) MIL-STD TEMPERATURE CYCLE MIL-C-48497A * Exception: this coating withstands 6 days continuous salt fog exposure without the drying steps.

29 CO 3444 Si 3.5-5µm High efficiency antireflection coating for Silicon 3.5 to 5.µm This coating is designed for systems optimised for the 3.5 to 5.µm waveband Reflectance.3% average 3.5 to 5.µm 93 3 Reflectance.75% absolute 3.5 to 5.µm Transmission values are a for a 1mm thick Si substrate which has been coated on two surfaces with CO Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Reflection values are for a single surface coated with CO3444. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

30 ZINC SULPHIDE / MULTISPECTRAL ZINC SULPHIDE ZnS ZnS Multispectral Transmission Spectrum 8% 5mm thick 7% ZnS Transmission Spectrum 8% 5mm thick 7% Two grades of ZnS are available for use in imaging systems and instruments. Regular grade material is grown by the chemical vapour deposition process. This material is often used in the 3 to 5µm and 8 to 12µm region. It is available in large sizes as well. 6% 5% 4% 3% 2% 6% 5% 4% 3% 2% MultiSpectral grade ZnS is treated after growth to eliminate microscopic voids and defects which occur in the Regular grade, thus extending the usefulness of this material to include the visible region. MATERIAL PROPERTIES 1% % OPTICAL PROPERTIES STANDARD MULTISPECTRAL Bulk 1.6µm _<.24 _<.2 cm -1 cm -1 Temperature Change of Refractive 1.6µm 41 x 1-5 K -1-5 Temperature Change of Refractive 54 x 1 K -1 THERMAL PROPERTIES Thermal 293K W m K W m -1 K -1 Specific Heat.469 J kg -1 K J kg -1 K -1 Linear Expansion 293K 6.8 x 1-5 K K -1 MECHANICAL PROPERTIES Young's Modulus 74.5 GPa 74.5 GPa Rupture Modulus 13 GPa 69 GPa Knoop Hardness kgf mm kgf mm -2 Density kg m 4.9 kg m -2 Poisson's Ratio The above technical information is supplied as an introductory outline only. We do not recommend that this data be relied upon without independent verification of suitability.

31 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page Coatings for ZINC SULPHIDE / MULTISPECTRAL ZINC SULPHIDE ZnS All CVI Infrared Optics coatings are now radioactive-free

32 CO 224 ZnS Dual band Dual band antireflection coating for Zinc Sulphide 3-5µm and µm This coating is designed for applications requiring transmission in both thermal imaging spectral bands Transmission values are for a 2mm thick Zinc Sulphide substrate which has been coated on both surfaces with CO 224. TRANSMISSION > % (average) from 3-5µm TRANSMISSION > 95% (average) from µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Reflection values are for a single Zinc Sulphide surface coated with CO 224. REFLECTION < 2% (average) from 3-5µm REFLECTION < 2% (average) from µm ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para SALT SOLUTION MIL-C para TS1888 para

33 CO 224E ZnS Dual band Wiper resistant dual band antireflection coating for Zinc Sulphide 3-5µm and µm An improved abrasion resistant coating for external surfaces, offering high transmission in both thermal imaging spectral bands The specification is similar to that of CO 224, except that this coating offers windscreen wiper resistance Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para Transmission values are for a 1mm thick Zinc Sulphide substrate which has been coated with on one surface with CO 224E and on the second surface with CO 224. TRANSMISSION > 95% (average) from 3-5µm TRANSMISSION > 95% (average) from µm Reflection values are for a single Zinc Sulphide surface coated with CO 224E. REFLECTION < 3% (average) from 3-5µm REFLECTION < 2% (average) from µm HUMIDITY MIL-C para TS1888 para SALT SOLUTION MIL-C para TS1888 para WIPER ABRASION TS1888 para wipes

34 CO 227 ZnS 3-5 High efficiency antireflection coating for Zinc Sulphide 3-5µm This coating is designed for internal surface (I.S.) applications and offers maximum transmission combined with low reflection Typically used in thermal imaging systems Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch Transmission values are for a 2mm thick Zinc Sulphide substrate which has been coated on both surfaces with CO 227. TRANSMISSION > % (average) from 3.2-5µm Reflection values are for a single Zinc Sulphide surface coated with CO 227. REFLECTION <.5% (average) from 3.2-5µm ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

35 CO 229 ZnS 8-12 High efficiency antireflection coating for Zinc Sulphide µm This coating is designed to maximise transmission for applications in the thermal spectral band Transmission values are for a 1mm thick Zinc Sulphide substrate which has been coated on both surfaces with CO 229. TRANSMISSION > 97% (average) from µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Reflection values are for a single Zinc Sulphide surface coated with CO 229. REFLECTION <.5% (average) from µm The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

36 CO 2214EN ZnS 8-12 Rain rain erosion resistant resitant antireflection coating for Zinc Sulphide 8-12µm Transmission Wavelength 95 µm Typical spectral performance. Measured at Wavelength angle of incidence - nm and at 2 C on a 1mm thick witness piece. The ENVIRONMENTAL coating will withstand PERFORMANCE the following environmental tests which The coating will be will carried withstand out on the a representative following environmental witness piece tests coated which will in the be same carried batch. out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 ADHESION MIL-C para HUMIDITY MIL-C para TS1888 para 5.1 TS1888 para HUMIDITY MIL-C para SALT SOLUTION MIL-C para TS1888 para TS1888 para SALT SOLUTION MIL-C para WIPER ABRASION TS1888 para TS1888 para wipes WIPER ABRASION TS1888 para Rain 5 wipes Erosion Resistance TRANSMISSION LOSS < 4% (average) from µm Rain Erosion Resistance Under the following test conditions: TRANSMISSION LOSS < 4% (average) from µm PERIOD Under the OF following EROSION: test conditions: 1 hour RAIN DROPS: 2mm mean diameter PERIOD OF EROSION: 1 hour IMPACT ANGLE: 6 to the surface RAIN DROPS: 2mm mean diameter SPEED: 5 mph/223 m/s IMPACT ANGLE: 6 to the surface RATE OF RAIN: 25mm/hour SPEED: 5 mph/223 m/s RATE OF RAIN: 25mm/hour Reflection An improved rain erosion resistant coating for external surfaces, offering high transmission in the 8-12µm waveband. It is particularly suitable for dome applications, where the same coating is applied to both faces. Transmission values are for a 6mm thick Zinc Sulphide substrate which has been coated on both surfaces with CO 2214EN. TRANSMISSION > 91% (average) from µm TRANSMISSION 87% (absolute) from µm TRANSMISSION > 73% (average) from µm TRANSMISSION > 65% (absolute) from µm

37 CO 222E Multispectral ZnS.45 to.65µm and 8. to 11.5µm Visible / Longwave IR antireflection coating for Multispectral ZnS.45 to.65µm and 8. to 11.5µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. This coating is designed for external surfaces of multispectral Zinc Sulphide components facing harsh environments and operating and both the visible and long wave infrared wavebands. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para WIPER TS Ave Transmission 9.%.45 to.65µm Ave Transmission.% 8. to 11.5µm

38 CO 2229 ZnS 3-5µm High efficiency antireflection coating for Zinc Sulphide 3. to 5.µm This coating is designed for optimum performance of thermal imaging systems in the 3. to 5.µm region Transmission % average 3. to 5.µm 93 3 Reflectance.5% average for 3. to 5.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Transmission values are a for a 1mm thick Germanium substrate which has been coated on two surfaces with CO2229. Reflection values are for a single Germanium surface coated with CO2229. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

39 CO 2244 ZnS 3.5-5µm High efficiency antireflection coating for Zinc Sulphide 3.5 to 5.µm This coating is designed for systems optimised for the 3.5 to 5.µm waveband Transmission.5% Average 3.5 to 5.µm Transmission.% Absolute 3.5 to 5.µm Reflectance.3% Average 3.5 to 5.µm Reflectance.75% Absolute 3.5 to 5.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Transmission values are for a 1mm thick Zinc Sulphide substrate which has been coated on two surfaces with CO2244. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Reflection values are for a single surface coated with CO2244. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

40 CO 229 Multispectral ZnS µm and 8.2 to 9.3µm Dual band antireflection coating for Multispectral Zinc Sulphide 3.8 to 5.µm and 8.2 to 9.3µm This coating is designed for dual band thermal imaging systems Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para Ave Transmission.25% 3.8 to 5.µm Abs Transmission 97.% 3.8 to 5.µm Ave Transmission.5% 8.2 to 9.3µm Abs Transmission 97.5.% 8.2 to 9.3µm Reflection < 2%(average) from 3.5µm to 5.µm Reflection < 2%(average) from 7.5µmto 1.5µm Transmission values are a for a 1mm thick Zinc Sulphide substrate which has been coated on two surfaces with CO229. Reflection values are for a single surface coated with CO229.

41 ZINC SELENIDE ZnSe Zinc Selenide is used for its very broad transmission range and low absorption, from the visible through to the far Infrared. Since it is a toxic material, processing and handling are subject to strict procedures 8% 1mm thick MATERIAL PROPERTIES 7% 6% 5% 4% 3% 2% 1% OPTICAL PROPERTIES Bulk Absorption 1.6µm _<.5 cm -1 Temperature Change of Refractive 1.6µm 61 x 1-5 K -1 THERMAL PROPERTIES Thermal Conductivity W m K -1 Specific Heat J kg K -1 Linear Expansion 2 C x 1 K -1 ZnSe Transmission Spectrum MECHANICAL PROPERTIES Young's Modulus Rupture Modulus noop Hardness ensity Poisson's Ratio 67.2 GPa 55 GPa kgf mm 527 kg m.28-2 K -2 D The above technical information is supplied as an introductory outline only. We do not recommend that this data be relied upon without independent verification of suitability.

42 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page Coatings for ZINC SELENIDE ZnSe All CVI Infrared Optics coatings are now radioactive-free -

43 CO 244 ZnSe Dual band Dual band antireflection coating for Zinc Selenide 3-5µm and 8-12µm This coating is designed for applications requiring transmission in both thermal imaging spectral bands Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch Transmission values are for a 2mm thick Zinc Selenide substrate which has been coated on both surfaces with CO 244. TRANSMISSION > 95% (average) from 3-5µm TRANSMISSION > % (average) from 8-12µm Reflection values are for a single Zinc Selenide surface coated with CO 244. REFLECTION < 2% (average) from 3-5µm REFLECTION < 2% (average) from 8-12µm ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para SALT SOLUTION MIL-C para TS1888 para

44 CO 244E ZnSe Dual band Wiper resistant dual band antireflection coating for Zinc Selenide 3-5µm and 8-12µm An improved abrasion resistant coating for external surfaces, offering high transmission in both thermal imaging spectral bands The specification is similar to that of CO 244, except that this coating offers windscreen wiper resistance Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para Transmission values are for a 2mm thick Zinc Selenide substrate which has been coated on one surface with CO 244E and on the second surface with CO 244. TRANSMISSION > 95% (average) from 3-5µm TRANSMISSION > % (average) from 8-12µm Reflection values are for a single Zinc Selenide surface coated with CO 244E. REFLECTION < 2% (average) from 3-5µm REFLECTION < 2% (average) from 8-12µm HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para SALT SOLUTION MIL-C para TS1888 para WIPER ABRASION TS1888 para wipes

45 CO 249 ZnSe 8-12 High efficiency antireflection coating for Zinc Selenide 8-12µm This coating is designed for internal surface (I.S.) applications and offers maximum transmission combined with minimum reflection Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para Typically used in thermal imaging systems. Transmission values are for a 1mm thick Zinc Selenide substrate which has been coated on both surfaces with CO 249. TRANSMISSION > % (average) from 8-12µm Reflection values are from a single Zinc Selenide surface coated with CO 249. REFLECTION <.5% (average) from 8-11µm HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para This coating is also unaffected by the following environmental tests which will be performed upon request. SALT SOLUTION MIL-C para TS1888 para TEMPERATURE CYCLE MIL-M-1358C para

46 CO 241 ZnSe 8. to 17.µm Broad band antireflection coating for Zinc Selenide 8. to 17.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. This coating is designed for ultra broad band longwave infrared performance. T 9.% average 8. to 15µm T 88.% average 8. to 17µm Transmission values are for a 1mm thick ZnSe substrate which has been coated on two surfaces with CO241. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

47 CO 2411 ZnSe 8-12 Antinarcissus antireflection coating for Zinc Selenide 8-12µm This coating is designed for internal surface (I.S.) applications and offers maximum transmission combined with extremely low reflection Typically used in thermal imaging systems. The coating does not transmit in the visible part of the spectrum and does not therefore facilitate laser alignment Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 Transmission values are for a 1mm thick Zinc Selenide substrate which has been coated on both surfaces with CO TRANSMISSION > % (average) from µm TRANSMISSION > % (absolute) from µm Reflection values are for a single Zinc Selenide surface coated with CO REFLECTION <.3% (average) from µm REFLECTION <.2% (average weighted to typical system response) from µm HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para SALT SOLUTION MIL-C para TS1888 para

48 CO 2429 ZnSe 3-5µm High efficiency antireflection coating for Zinc Selenide 3. to 5.µm This coating is designed for optimum performance of thermal imaging systems in the 3. to 5.µm region Transmission % average 3. to 5.µm 93 3 Reflectance <.5% average for 3. to 5.µm Transmission values are a for a 1mm thick ZnSe substrate which has been coated on two surfaces with CO Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Reflection values are for a single surface coated with CO2429. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

49 CO 2444 ZnSe High efficiency antireflection coating for Zinc Selenide 3.5 to 5.µm This coating is designed for systems optimised for the 3.5 to 5.µm waveband Transmission.5% Average 3.5 to 5.µm Transmission.% Absolute 3.5 to 5.µm Reflectance.3% Average 3.5 to 5.µm Reflectance.75% Absolute 3.5 to 5.µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Transmission values are a for a 1mm thick ZnSe substrate which has been coated on two surfaces with CO2444. Reflection values are for a single surface coated with CO2444. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

50 CO 249 ZnSe µm and 8.2 to 9.3µm Dual band antireflection coating for Multispectral Zinc Selenide 3.8 to 5.µm and 8.2 to 9.3µm This coating is designed for dual band thermal imaging systems T.25% Average 3.8 to 5.µm T 97.% Absolute 3.8 to 5.µm T.5% average 8.2 to 9.3µm T 97.5.% absolute 8.2 to 9.3µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

51 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page Coatings for OPTICAL GLASS All CVI Infrared Optics coatings are now radioactive-free

52 Visible Conductive Coating CO CCO1 Without Anti-reflection coating CO CCO2 Including Anti-reflection coating 1% 15Ω/sq CCO2 on BK7 This coating is designed to have high conductivity and transmission over the.4-1.2µm range. It is suitable for use in aircraft instrumentation windows, CRT displays, anti-static, heating and EMC screening applications and LCD displays. 8% 6% 4% 2% Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Spectral performance of a typical coating is shown below. (NB. No anti-reflection coating on back surface). Ω/sq %T on 1mm thick BK7 CC1 CC The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Adhesion MIL-C para Humidity MIL-C Para Abrasion MIL-C Para Salt Solution MIL-C Para ELECTRICAL PERFORMANCE Sheet resistance in the range 1 ΩΩ to 5 ΩΩ per square can be achieved with tolerances of 1 to 15%, depending on resistivity requirements. This is achieved by varying the thickness of the Indium Tin Oxide (ITO) layer. The optical performance can then be achieved by adjusting the design of the anti-reflection coating.>? BUSBARS We can also provide busbar technology, required for Electromagnetic Interference (EMI) and heating applications. EMC SCREENING PROPERTIES Ω/sq Shielding effectiveness (3-1MHz) 1 15dB 2 36dB 1 42dB This coating to can be adapted to meet the specific spectral requirements of specific applications.

53 CO OM12 Wideband IR mirror for oblique incidence 1% 99% % 97% % 95% % 93% % 91% 9% Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. This coating is designed to retain high reflectivity in the IR over a wide angular range. The mirror uses gold as the medium for high reflectivity, and the protective overlayers have been chosen so as to eliminate the reflectivity problems suffered by conventional protected mirrors when used in the IR at oblique incidence. Measured at 45 angle of incidence REFLECTION >% (average) 3-5µm REFLECTION >% (average) 8-12µm The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

54 Heating / De-frosting & EMC Shielding Windows CVI has the capability to offer de-misting/defrosting windows by means of heating. This is typically used in systems that are likely to encounter variances in temperature or weather conditions. There are two different ways of heating a window: Direct By using the bulk resistivity of Semiconductor materials such as Germanium and Silicon, a current can be passed directly through the material by means of busbar technology. Busbars can be manufactured to fit most thicknesses of window. Indirect Indirect heating is suitable for use where non-conducting materials are required in a system such as Zinc Sulphide. Heating can be achieved using insulated foil heaters. Foil heaters can be manufactured to a minimum width of approx. 6mm. POWER REQUIREMENTS It is best to consider requirements for a system at an early stage. This way, CVI can offer advice on the power required and the best method for delivering heat into a window. Options to consider would be whether a current limiter or temperature control are required. Current/Voltage combinations should also be considered. As each individual system has different requirements, we would recommend discussing your requirements with us prior to finalising design.

55 CO 521 Standard visible antireflection coating on glass This coating is designed to combine high visual transmission with low reflection. Three versions of the coating cover the refractive index range 1.46 to Average reflection per coating.5% 42-7nm Wavelength nm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

56 CO 528 Broadband antireflection coating on glass This coating is designed to combined to give low reflectivity in the visible, Near IR and 164nm laser wavelength. Three versions of the coating cover the refractive index range 1.46 to Average reflection per coating <.75% 45 to 11nm Reflection at 164nm <.5% Wavelength nm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Alternatively:- Average Reflection per coating <.5% 45 to 65 nm Reflection at 164nm <.5% ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

57 CO 521 Fused Silica µm High efficiency antireflection coating for Fused Silica 1.2 to 2.4µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. 1 This coating is designed for optimum spectral performance in the 1.2 to 2.4µm region. T.% average 1.2 to 2.4µm The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

58 CO 524E Glass.45 to.75µm and 1.543µm High efficiency antireflection coating for Glass.45 to.75µm and 1.543µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. CO524E on one surface and CO524 on the other This coating is designed for optimum visible and laser performance in the.45 to.75µm and 1.543µm regions. CO524E on one surface and CO524 on the other. T 97.5% absolute.45 to.75µm T.% absolute.45 to.75µm T 93.% absolute 1.543µm R 1.8% average for.45 to.75µm (two surfaces) The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para SALT FOG [24HRS] MIL-STD

59 CC21 Glass.425 to.7µm and 1.643µm Conductive coating with antireflective overcoat for Glass.425 to.7µm and 1.643µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. This coating is designed for optimum conductivity whilst maximising transmission in the visible and NIR regions. T 88.% average.425 to.7µm T 9.% absolute at 1.64µm CONDUCTIVITY 2 to 3ohm/sq The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

60 CHALCOGENIDE GLASSES CVI can polish and coat many of the proprietary Chacogenide Glasses on the market. For material characteristics, see the manufacturers websites. The following sites contain useful information:

61 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page Coatings for CHALCOGENIDE GLASS All CVI Infrared Optics coatings are now radioactive-free

62 TM CO 251 AMTIR 8-12 High efficiency antireflection coating on for Chalcogenide Glasses 8-12µm This coating is designed for internal surface (I.S.) applications and offers maximum transmission combined with minimum reflection Typically used in thermal imaging systems. Transmission values are for a 1mm thick AMTIR TM substrate which has been coated on both surfaces with CO 251. TRANSMISSION > % (average) from µm Reflection values are from a single AMTIR TM surface coated with CO 251. REFLECTION _<.4% (average) from µm Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

63 TM CO 269 GASIR 8-12 High efficiency antireflection coating on GASIR TM 8-12µm This coating is designed for internal surface (I.S.) applications and offers maximum transmission combined with minimum reflection Typically used in thermal imaging systems Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch Transmission values are for a 1mm thick GASIR TM substrate which has been coated on both surfaces with CO 269. TRANSMISSION > % (average) from µm Reflection values are from a single GASIR TM surface coated with CO 269. REFLECTION <.4% (average) from µm ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

64 GALLIUM ARSENIDE GaAs Gallium Arsenide is used in some far infrared applications where its refractive index, light weight and relative strength, compared with some other IR materials, can be of benefit. Since it is a toxic material, processing and handling are subject to strict procedures MATERIAL PROPERTIES OPTICAL PROPERTIES UNITS Bulk 1.33µm -1 <.1 cm Reflection Loss at 1.33µm (Two surfaces) 44% Refractive Index at 1.33µm Change in Refractive Index with Temperature (dn/dt) 14.7 x 1-3 K -1 THERMAL PROPERTIES Thermal Conductivity at 2 C W m K -1 at 273K Specific Heat 36 J kg -1 K -1 Thermal Expansion x 1 K -1 at 3K MECHANICAL PROPERTIES Youngs Modulus Rupture Modulus Shear Modulus noop Hardness Poisson Ratio 84.8 GPa 7.34 MPa GPa 75 kgf mm.31 K -1 The above technical information is supplied as an introductory outline only. We do not recommend that this data be relied upon without independent verification of suitability.

65 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page Coatings for GALLIUM ARSENIDE GaAs All CVI Infrared Optics coatings are now radioactive-free

66 CO 329 GaAs 8-12 High efficiency antireflection coating for Gallium Arsenide 8-12µm This coating is designed for internal surface (I.S.) applications and offers maximum transmission combined with low reflection Typically used in thermal imaging systems Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. Transmission values are for a 1mm thick GaAs substrate which has been coated on both surfaces with CO 329 TRANSMISSION > % (average) from µm Reflection values are for a single GaAs surface coated with CO 329 REFLECTION <.5% (average) from µm ADHESION MIL-C para TS1888 para 5.1 HUMIDITY MIL-C para TS1888 para ABRASION MIL-C para TS1888 para 5.4.1

67 CO 3229 GaAs 3-5µm High efficiency antireflection coating for Gallium Arsenide 3. to 5.µm This coating is designed for optimum performance of thermal imaging systems in the 3. to 5.µm region Transmission % average 3. to 5.µm 93 3 Reflectance <.5% average for 3. to 5.µm Transmission values are a for a 1mm thick GaAs substrate which has been coated on two surfaces with CO Typical spectral performance. Measured at angle of incidence and at 2 C on a 1mm thick witness piece. Reflection values are for a single surface coated with CO3229. The coating will withstand the following environmental tests which will be carried out on a representative witness piece coated in the same batch. ADHESION MIL-C-48497A para HUMIDITY MIL-C-48497A para SEVERE ABRASION MIL-C-48497A para SOLUBILITY & CLEANABILITY MIL-C-48497A para SALT SOLUTION MIL-C-48497A para WATER SOLUTION MIL-C-48497A para TEMPERATURE CYCLE MIL-C-48497A para

68 Please click on any of the symbols to select a coating Alternatively you can click on the Next page icon at the bottom of screen to scroll through our capabilities page by page FILTER DESIGN All CVI Infrared Optics coatings are now radioactive-free