Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Norikazu Okada0
Date of Patent
February 12, 2008
0Patent Application Number
111045890
Date Filed
April 13, 2005
0Patent Primary Examiner
Patent abstract
An optical encoder includes a mobile object having a plurality of aligned slits, a light-emitting portion for emitting light toward the mobile object, and a light-receiving portion 103 for receiving the light which has passed the mobile object. The light-receiving portion 103 produces an AC (Alternating Current) signal in an oscillation circuit 111 and outputs an input current, which is changed to an AC, from a light-emitting current output circuit 112 into the light-emitting portion.
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