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Focus Detector Disclosure Number: IPCOM000068273D
Original Publication Date: 1979-Dec-01
Included in the Prior Art Database: 2005-Feb-20

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Drollinger, B Korth, H [+details]


The focus detector suitable for telecentric imaging systems consists of a light source 1, a lens 2, a first beam splitter 3 with a lens 4 and an appertaining photodetector 5, a second beam splitter 6 arranged in the telecentric light path defined by a lens 7, as well as a lens 8 with an appertaining photodetector 9.