Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 13, 2009
Patent Application Number
11957778
Date Filed
December 17, 2007
Patent Primary Examiner
Patent abstract
A compact optical scanning apparatus which can change the focal position of a light beam at high speed is provided. In this optical scanning apparatus, a collimating lens (5) which parallelizes a light beam from a light source (1) is formed by a KTN crystal, and electrodes (7, 6, 8) are placed inside and outside the collimating lens (5).
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