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Colored glass filters

from Andover

Colored glass filters are unique in their ability to transmit a very broad band of light. The long wave pass type, often used as order/wavelength sorting filters, transmit the longer wavelengths and absorb the shorter wavelengths. The bandpass type, useful for enhancing the signal-to-noise ratio of illumination systems, transmit a broad band of energy while blocking the shorter and longer wavelengths. As with all optical components, colored glass filters should not be exposed to high temperatures or sharp temperature changes.

Features

Fabricated from high-quality optical filter glass
Excellent color consistency as well as sharp contrast
Both surfaces precision polished
Options span ultraviolet to infrared region

Specifications

General Specifications
Optical thickness	3 mm±0.5 mm
Mechanical thickness	add 0.8 mm for ring mount
Size tolerance	+0.0 mm/-0.25 mm
Surface quality	80/50 per MIL-M-13508
Max. Operating temperature	+100 °C
Transmitted wavefront (TWF)	1/4 wave per inch
Parallelism	30 arc seconds or better
Spectral data	stated as internal transmittance
Mechanical	Mounted
Optional	Mounted in threaded ring
Note: Corners are cropped on all 165 mm sq. parts unless otherwise requested

Three Class Types
Bandpass Type	Heat Absorbing Type	Long Wave Pass Type
Ultraviolet Transmitting Blue and Blue - Green	Infrared Absorbing	Near Infrared Transmitting Yellow Orange Ultraviolet Transmitting

We check all filter glass for striae, bubbles and inclusions using our tunable interferometer and custom-designed inclusion tester. These instruments detect minute defects, even in materials that do not transmit visible light.

		Size, Shape & Part Number
Glass Type	25 mm Ø	50 mm Ø	50 mm SQ	165 mm SQ
UV Transmitting	001FG09-25 005FG09-25 011FG09-25	001FG09-50 005FG09-50 011FG09-50	001FG09-50S 005FG09-50S 011FG09-50S	001FG09-165S 005FG09-165S 011FG09-165S
Blue glass	023FG11-25 025FG11-25 038FG11-25 S86FG11-25	023FG11-50 025FG11-50 038FG11-50 S86FG11-50	023FG11-50S 025FG11-50S 038FG11-50S S86FG11-50S	023FG11-165S 025FG11-165S 038FG11-165S S86FG11-165S

		Size, Shape & Part Number
Glass Type	25 mm Ø	50 mm Ø	50 mm SQ	165 mm SQ
Heat Absorbing	001FG13-25 003FG13-25 005FG13-25	001FG13-50 003FG13-50 005FG13-50	001FG13-50S 003FG13-50S 005FG13-50S	001FG13-165S 003FG13-165S 005FG13-165S
White Glass	280FG01-25 295FG01-25 305FG01-25 320FG01-25	280FG01-50 295FG01-50 305FG01-50 320FG01-50	280FG01-50S 295FG01-50S 305FG01-50S 320FG01-50S	280FG01-165S 295FG01-165S 305FG01-165S 320FG01-165S
Green Glass	395FG03-25	395FG03-50	395FG03-50S	395FG03-165S

		Size, Shape & Part Number
Glass Type	25 mm Ø	50 mm Ø	50 mm SQ	165 mm SQ

Green Glass	400FG03-25 420FG03-25 435FG03-25 455FG03-25 475FG03-25 495FG03-25	400FG03-50 420FG03-50 435FG03-50 455FG03-50 475FG03-50 495FG03-50	400FG03-50S 420FG03-50S 435FG03-50S 455FG03-50S 475FG03-50S 495FG03-50S	400FG03-165S 420FG03-165S 435FG03-165S 455FG03-165S 475FG03-165S 495FG03-165S

Orange Glass	515FG05-25 530FG05-25 550FG05-25 570FG05-25 590FG05-25	515FG05-50 530FG05-50 550FG05-50 570FG05-50 590FG05-50	515FG05-50S 530FG05-50S 550FG05-50S 570FG05-50S 590FG05-50S	515FG05-165S 530FG05-165S 550FG05-165S 570FG05-165S 590FG05-165S

Red Glass	610FG07-25 630FG07-25 645FG07-25 665FG07-25 695FG07-25 715FG07-25	610FG07-50 630FG07-50 645FG07-50 665FG07-50 695FG07-50 715FG07-50	610FG07-50S 630FG07-50S 645FG07-50S 665FG07-50S 695FG07-50S 715FG07-50S	610FG07-165S 630FG07-165S 645FG07-165S 665FG07-165S 695FG07-165S 715FG07-165S

IR Transmitting	009FG07-25 780FG07-25 830FG07-25 850FG07-25	009FG07-50 780FG07-50 830FG07-50 850FG07-50	009FG07-50S 780FG07-50S 830FG07-50S 850FG07-50S	009FG07-165S 780FG07-165S 830FG07-165S 850FG07-165S