Questions tagged [optical-systems]

US patent class 359: optical systems and elements

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Has anyone patented a way to implement fast tunable optical filters with 1 to 2 nm bandwidth FWHM that are insensitive to angle of incidence?

In reference to the patent: US6901178, Fast Tunable Optical Filter I am interested in whether the combination of a spectrometer and a tunable notch filter based on U.S Patent 6901178 with notch ...
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What is the specific innovation in patent US 2010/0091396 (afocal optical concentrator)?

US patent 2010/0091396 “Afocal Optical Concentrator”, filed 2009-10-08, claims: An optical concentration and collimation system, comprising: A. a concave parabolic trough as a primary ...