Request InfoLake Shore CryotronicsFar-IR and terahertz bandpass and narrow-bandpass filters with center wavelengths from 15 to 200 μm have been released by Lake Shore Cryotronics Inc. Patterned cross-shaped holes allow transmission of light at specific wavelengths. Center wavelength transmission of up to 80% with tolerance of ±0.1 μm and out-of-band transmission down to 0.5% have been achieved. The 1-mm-deep filters can be integrated into existing filter wheels, cryostats or compact optical instruments. They deliver stable and repeatable performance down to 4 K. The filters are available in diameters of 12.5, 19.0...See full productRelated content from Photonics MediaPRODUCTSPhotonics.com 8/3/2022Two-color Sandwich DetectorsTwo-color Sandwich Detectors from OSI Optoelectronics Inc. are designed for optical remote temperature measurements. 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The near-infrared spectrum typically extends from about 700...Photonics Dictionaryoptical filterAn optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical filters are used to control the spectral content of light in various...Photonics Dictionarypyramid errorPyramid error in optics refers to an aberration in the shape of an optical surface, particularly in the context of mirrors. It is a type of distortion that can occur when the surface of a mirror...Photonics DictionarymagnitudeIn astronomy, the relative brightness of a celestial body. Originally a scale from 1 to 6, where 1 represented the brightest and 6 the faintest visible night sky objects. 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