
Instrument Display Windows can be supplied complete with a Conductive Optical Coating, Anti-Reflection (AR) Coating and Bus Bars for conductivity or grounding.

Circular Variable Neutral Density Filters (UV-VIS-IR) are filter wheels that linearly attenuate light as the filter is rotated. As the filter rotates, the beam intensity is customized due to the density variation of a gradient metallic coating around the filter. These filters are fully customizable in optical density gradient function, transmission gradient function, substrate type, coating materials, and size to meet customer requirements. Densities can be supplied as a standard linear or a customized gradient function. Custom sizes and densities are available upon request. Specifications: D = Log 10(1/T) Coating Types: Metallic Anti-Reflection Coating: Available Substrate Materials: N-BK7, Fused Silica and ZnSe Outside Diameter (OD): 25mm - 200mm ± 0.2mm OD Tolerance: ± 5% Absolute Inside Diameter: 7.5mm - 25.4mm ± 0.2mm Thickness: 2.0mm ± 0.2mm Optical Density Range: Specify: 0 to 1, 2, 3, 4, or 5 Wavelength Calibration: N-BK7: 510nm; F.S: 510nm; ZnSe: 2.5µm Wavelength Range: N-BK7: 375nm - 2500nm; F.S: 200nm - 2500nm; ZnSe: 2.0µm - 5.0µm Gradient Range: 270° Typical Parallelism: < 3 Arc Minutes TWE: < 2 Waves per 25mm Centration: ± 0.2mm Surface Quality: 80/50 Scratch & Dig Clear Aperture: 80% of Diameter Part Number / Substrate Material / Outer Diameter / Inner Diameter / Optical Density R00500-xx N-BK7 25mm 7.5mm Specify R00510-xx N-BK7 50mm 7.5mm Specify R00515-xx N-BK7 75mm 7.5mm Specify R00520-xx N-BK7 100mm 7.5mm Specify R00522-xx N-BK7 100mm 25.4mm Specify R00525-xx N-BK7 125mm 25.4mm Specify R00530-xx N-BK7 150mm 25.4mm Specify R00550-xx N-BK7 175mm 25.4mm Specify R00580-xx N-BK7 200mm 25.4mm Specify R04400-xx Fused Silica 25mm 7.5mm Specify R04410-xx Fused Silica 50mm 7.5mm Specify R04415-xx Fused Silica 75mm 7.5mm Specify R04420-xx Fused Silica 100mm 7.5mm Specify R04422-xx Fused Silica 100mm 25.4mm Specify R04425-xx Fused Silica 125mm 25.4mm Specify R04430-xx Fused Silica 150mm 25.4mm Specify R04450-xx Fused Silica 175mm 25.4mm Specify R04465-xx Fused Silica 200mm 25.4mm Specify R05600-xx ZnSe 25mm 7.5mm Specify R05610-xx ZnSe 50mm 7.5mm Specify R05620-xx ZnSe 100mm 7.5mm Specify R00520-xx ZnSe 100mm 7.5mm Specify
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The Circular Variable Neutral Transmission filters (UV-VIS) are designed to attenuate light as a function of transmission instead of density. These CVNT filters are much more sensitive to position at the lower transmission values than are linear density filters. Sizes are available from 25mm to over 200mm in diameter. Custom sizes and densities are available upon request. Specifications: T = 1/10 D Coating Types: Metallic Outside Diameter (OD): 25mm - 200mm OD Tolerance: ± 5% Absolute Inside Diameter: 7.5mm - 25.4mm Substrate Materials: N-BK7, Fused Silica Thickness: 2.0mm ± 0.2mm Transmission Range: Specify: Clear (92%) to 1% or 10% Wavelength Calibration: N-BK7: 510nm; F.S: 510nm; ZnSe: 2.5µm Wavelength Range: N-BK7: 375nm - 2500nm; F.S: 200nm - 2500nm; ZnSe: 2.0µm - 5.0µm Anti-Reflection Coating: Available Gradient Range: 270° Typical Parallelism: < 3 Arc Minutes TWE: < 2 Waves per 25mm Centration: ± 0.2mm Part Number / Substrate Material / Outer Diameter / Inner Diameter / Optical Density R06701-xx N-BK7 25mm 7.5mm Specify R06703-xx N-BK7 50mm 7.5mm Specify R06705-xx N-BK7 75mm 7.5mm Specify R06707-xx N-BK7 100mm 7.5mm Specify R06709-xx N-BK7 125mm 25.4mm Specify R06711-xx N-BK7 150mm 25.4mm Specify R06713-xx N-BK7 175mm 25.4mm Specify R06715-xx N-BK7 200mm 25.4mm Specify R06801-xx Fused Silica 25mm 7.5mm Specify R06803-xx Fused Silica 50mm 7.5mm Specify R06805-xx Fused Silica 75mm 7.5mm Specify R06807-xx Fused Silica 100mm 7.5mm Specify R06809-xx Fused Silica 125mm 25.4mm Specify R06811-xx Fused Silica 150mm 25.4mm Specify R06812-xx Fused Silica 175mm 25.4mm Specify R06815-xx Fused Silica 200mm 25.4mm Specify
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The Linear Variable Neutral Density Filter is used to attenuate light as the filter is translated. The filters can be used with white light as well as with low power lasers and the optical density varies linearly across the length of the linear variable neutral density filter. A large finite aperture can be attenuated by translating two filters in opposite directions. The filters are available in 25mm x 50mm – 150mm sizes. Custom sizes and densities are available upon request. Specifications: D = Log 10 Coating Types: Metallic Optical Density Range: Specify: 0-1, 2, 3, 4, or 5 Width: 25mm Length: 50mm - 150mm Tolerance: ± 5% Absolute Substrate Materials: N-BK7, Fused Silica and ZnSe Transmission Range: 100% - 10%, 1% Wavelength Calibration: N-BK7: 510nm; F.S: 510nm; ZnSe: 2.5µm Wavelength Range: N-BK7: 375nm - 2500nm; F.S: 200nm - 2500nm; ZnSe: 2.0µm - 5.0µm Anti-Reflection Coating: Available Parallelism: < 3 Arc Minutes TWE: < 2 Waves per 25mm Part Number / Substrate Material / Length / Width / Optical Density R00221-xx N-BK7 50mm 25mm Specify R00231-xx N-BK7 75mm 25mm Specify R00241-xx N-BK7 100mm 25mm Specify R00251-xx N-BK7 125mm 25mm Specify R00261-xx N-BK7 150mm 25mm Specify R022xQ-xx Fused Silica 50mm 25mm Specify R023xQ-xx Fused Silica 75mm 25mm Specify R024xQ-xx Fused Silica 100mm 25mm Specify R025xQ-xx Fused Silica 125mm 25mm Specify R026xQ-xx Fused Silica 150mm 25mm Specify R022xZ-xx ZnSe 50mm 25mm Specify R023xZ-xx ZnSe 75mm 25mm Specify R024xZ-xx ZnSe 100mm 25mm Specify R025xZ-xx ZnSe 125mm 25mm Specify
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Linear Apodizing filters are customizable density gradient filters that have constant density in one direction and variable ND filter in the other direction. Two types: dark in center to clear on the outer edges or clear in center to dark on the outer edges. These filters are used to eliminate undesirable intensity variations in optical systems. There are two basic types of these filters: 1) Dark in the center to clear on the outer edges, or 2) Clear in the center to dark on the outer edges. Custom sizes and densities are available upon request. Specifications: Dimensions: Up to 125mm x 25mm Substrate Materials: N-BK7 or equivalent Optical Density Range: Specify: 0.04 to 1, 2, or 3 (typical) Clear Aperture: 90% without AR Coating TWE: < 2 Waves per 25mm Wavelength Calibration: 632.8nm Wavelength Range: 375nm - 2000nm Part Number / Substrate Material / Size / Center Optical Density R01470-xx N-BK7 50 x 25mm Clear Specify R01471-xx N-BK7 75 x 25mm Clear Specify R01472-xx N-BK7 100 x 25mm Clear Specify R01473-xx N-BK7 125 x 25mm Clear Specify R01480-xx N-BK7 50 x 25mm Dark Specify R01481-xx N-BK7 75 x 25mm Dark Specify R01482-xx N-BK7 100 x 25mm Dark Specify R01483-xx N-BK7 125 x 25mm Dark Specify
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