Browse Prior Art Database

Focus Detector

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

Publishing Venue

IBM

Related People

Authors:
Drollinger, B Korth, H [+details]

Abstract

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.