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Focus Detection Method for an Optical Instrument Disclosure Number: IPCOM000035127D
Original Publication Date: 1989-Jun-01
Included in the Prior Art Database: 2005-Jan-28

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Kirk, CP [+details]


An algorithm has been proposed to improve focusing procedures of optical measuring equipment so as to minimize ambiguous results evident with existing techniques. The suggested method uses the existing hardware of the optical line-width measuring tool along with a stop in the illuminator. (Image Omitted)