Request InfoOcean Optics - Part of Ocean InsightFiber optic collimating lens accessories designed to increase the proficiency and convenience of the optical interface in a spectrometer system are available from Ocean Optics Inc. The 74-90-UV reflector is a 3/8-24 threaded black anodized aluminum assembly for mounting lenses at right angles. Useful for applications where space is tight, it has a mirror under its cap that reflects light from the collimating lens to 90°. 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