Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
April 23, 2013
Patent Application Number
12755512
Date Filed
April 7, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
An illumination apparatus includes a light source and a collimator optical system converting light emitted from the light source to approximately-parallel light. The collimator optical system includes, in an order of proximity to the light source, a first lens having a positive power and including an approximately-flat surface and an aspheric surface, and a second lens having a positive power.
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