IR Bandpass Filters Optical color glass can selectively transmit special wavelength of light, or a portion of wavelengths in a continuous spectrum, or reduce transmission evenly across visible spectrum by absorbing or reflecting the portion of the light that is not being transmitted. Optical color glass is also called Colored optical glass filters. It is mainly used as filters for observing, photograph, infrared instrument in order to improve the visibility or meet special spectrum requirements. It can be also made into colored glasses. Worldhawk can provide various color glass filters or its substitutes.Include cut-off type glass filter, selective absorption type glass filter, heat-absorbing glass and neutral grey colored glass.   Bandpass fIlters - Bandpass filters - Narrow bandpass filter - UV bandpass filter - IR Bandpass filter Technique Data:  FWHM: 30nm-80nm OD:2-3 FWHM: 5nm-25nm OD:4-6 Size: φ6-φ200 Center Wavelength Range:340-1064nm (340 380 405 450 492 510 546 578 600 620 630 808 850 940 1064...)