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Photopic Filters

UQG (Optics) Ltd.Request Info
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Photopic FiltersUQG Optics Photopic colour glass filters transmit and pass the wavelengths of light in proportion to the eyes natural response. When used in combination with a broadband source and detector, the transmission is very similar to the human eye spectral response.

Coated Photopic filters are made to custom design and values of transmission.

UQG Optics has an extensive range of stock sizes for a quick delivery.


Diameter: 5mm to 160mm
Squares/Rectangles: 3mm to 165mm
Thickness: 0.50mm to 6mm
Edges: As cut/bevelled, ground or polished
Parallelism: Up to 1 minute
Flatness: Up to Lambda 4


Diameters: 12.50mm to 50mm
Square/Rectangles: 50mm
Material: Optical Filter Glass
Dimension Tolerance: +0.00/-0.20mm
Thickness Tolerance: ± 0.20mm
Edges: Fine Ground
Surface Quality: 60/40
Flatness: Ø25 ≤ 5 fringes Ø50 ≤ 8 fringes
Parallelism: ≤ 3 arc mins

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