Request InfoDeposition Sciences Inc. (DSI)DSI has introduced a wide-acceptance-angle bandpass filter that can be coated onto curved surface lenses for high-accuracy applications. The thin film coating blocks wavelengths from the visible region of the spectrum (400 nm) into the shortwave infrared wavelength (1200 nm) with a high transmission at 1064 nm. It allows uniform optical performance of the coating on the center area of a lens at normal incidence and performance on the edge of a lens at high angles of incidence. 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