Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tomotaka Takahashi0
Kenji Kojima0
Date of Patent
August 22, 2006
Patent Application Number
10846437
Date Filed
May 14, 2004
Patent Primary Examiner
Patent abstract
A plurality of photodiodes are disposed along a measurement axis on an optical receipt chip of a photoelectric encoder. Formed on each light acceptance surface of these photodiodes is a second optical grating which has more than one light shield portion extending in a “y” direction. Each acceptance surface has a portion that is disposed obliquely relative to the extending direction of the light shield portion.
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