Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masatoshi Togashi0
Hisashi Murata0
Date of Patent
March 3, 2009
0Patent Application Number
114807120
Date Filed
July 3, 2006
0Patent Primary Examiner
Patent abstract
In an optical lens including a lens portion having a convex or concave lens surface on each side, each lens surface of the lens portion has a convex portion of a small projection centered on the optical axis thereof, and the convex portion has the height which is approximately less than four times the used wavelength so as not to have an effect on an optical characteristic of the lens portion.
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