Request InfoDelta Optical Thin Film A/SCircular Variable Filters from Delta Optical Thin Film AS are interference narrow bandpass filters of advanced design. The filters are deposited on circular substrates, called segments. Film thickness, and therefore the wavelength of peak transmittance, varies linearly and continuously with angular position on the segment. Full wavelength scanning is provided from VIS to long-wave IR. They can be manufactured in any wavelength range from 0.4 to 14.3 µm. A circular variable filter segment rotation provides a continuous scan of its complete wavelength range. 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We understand how coated optical elements...Photonics Buyers' GuideGlass Fab Inc.A History of Quality Since 1974 Glass Fab Inc. has met customers' stringent specifications by providing fabricated parts made of optical glass, filter glass, fused quartz and fused silica, low...