Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1997-08-12
1998-06-02
Manuel, George
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
A61B 800
Patent
active
057591555
ABSTRACT:
An optical rotary encoder device comprises a disk which has first and second sections differing in the amount of reflected light formed alternately on its entire periphery, the first sections being made up of high reflectivity sections in a specific angular portion in a 360-degree range and low reflectivity sections in the remaining angular portion in the 360-degree range, a light projection/reception section which is positioned so as to face the disk and projects and receives light onto and from the first and second sections on the disk, and rotating mechanism which rotates the disk and the light projection/reception section relatively.
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Patent Abstracts of Japan, vol. 8, No. 153 (P-287), Jul. 17, 1984, JP-A-59 051 307, Mar. 24, 1984. JP-A-60 146113, Aug. 1, 1985.
Kabushiki Kaisha Toshiba
Manuel George
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