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VUV mirror Specifications Material: BK7, Grade A fine annealed Diameter Tolerance: +0 /- 0.10mm Thickness Tolerance: +/- 0.10mm Surface flatness: Lambda/4 Surface quality: 60 - 40 scratch and dig Coating: Aluminized with MgF2 protection layer Reflectivity: R > 50% @ 120 - 200nm, R > 70% @ 200 - 850nm Angle of incidence 45¡ã

Dome Domes can be used in pods and missiles. They are designed to protect electronic detectors and sensors from moving particles, water and corrosives. The optical domes provide front surface protection for detectors and sensors against moving particles such as sand, debris, and water while extending their viewing angles. They can be manufactured to specification from a variety of materials. Material used: Fused silica, Si, Ge, GaAs, ZnS, ZnSe, Sapphire, MgF2, Spinel, IR glass, etc. Radius: R10 ¡Þ Diameter: ¦µ10 ¦µ400mm Diameter tol: ¡À 0.04 ¡« ¡À 0.2mm Thickness tol: ¡À 0.02mm ¡À 0.15mm Surface quality: 40/20 80/60 Surface accuracy: ¦Ë/2 4¦Ë Irregularity: 0.1 1.0 Centration: 30 arc seconds ¨C 5 arc minutes Coating: HEBBAR coating, diamond like coating, filter coating, beamsplitter coating, protective coating, etc. Transmission: > 95% Reflectivity: < 3% max

Right angle prism The right-angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads. This is because a right-angle prism is easier to mount and deforms much less than a mirror in response to external mechanical stress. Very high transmission can be achieved by using the hypotenuse face in total internal reflection, and by antireflective coating the entrance and exit faces. Alternatively, the hypotenuse face can be used in external reflection, and coated with a metallic reflective coating. Specifications Material: BK7, fused silica Dimension tolerance: ¡À0.2mm Angle tolerance: 5 arc seconds / 1 arc minute / 3 arc minutes Flatness: ¦Ë/2 @632.8nm Surface quality: 60-40 Bevel: 0.2mm x 45 deg

Sapphire dome Sapphire has the characteristic of high hardness, high strength, high transmittance, and high resistance to thermal shock quality factor. With excellent performance on thermal shock resistance and abrasion resistance, it can be widely applied to high speed working photoelectric equipment and intelligent high speed dome camera in airborne, shipboard, space-borne, submarine-based, land-based field. Specifications Crystal orientation: C, A, M optional Diameter: ¦µ20 ¨C ¦µ300 mm Radius of curvature: R10 - R150 Wall thickness: > 1mm Edge thickness difference: ¡Ü 0.02mm Total thickness variation: ¡Ü 0.05mm C axis deviation: ¡Ü 2o Centration: ¡Ü 2 arc minutes Surface Quality£º Better than 60-40 Power N: ¡Ü 5 fringes Irregularity ¡÷N: ¡Ü 1 fringe

Penta prism Penta prism has two important properties. The first is that as the image is deviated by 90 degrees it is neither inverted nor reversed. The second is that the penta-prism is a constant deviation prism, meaning that the same exact 90-degree deviation angle applies to all rays transmitted by the useful aperture regardless of the angles between these rays and the optical axis. The deviation is thus independent of the prism orientation, making the penta-prism especially important in application in which prism orientation can¡¯t be precisely controlled. This prism is commonly used in optical tooling, alignment, range finding, surveying, and other instrumental applications. Specifications Material: CDGM H-K9L, grade A fine annealed Dimension tolerance: ¡À0.2mm 90¡ã angle deviation: Better than 5 arc seconds Flatness: ¦Ë/2 @632.8nm Surface quality: 60-40 Reflectivity: R > 95% per surface @ 630 - 680nm