Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Dai Shintani0
Date of Patent
October 4, 2011
Patent Application Number
12020207
Date Filed
January 25, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
An imaging optical system O supported by a lens barrel 3 includes a second lens group G2. The second lens group G2 includes a fourth lens 54 and a black light shielding portion 54d formed by printing. The light shielding portion 54d is a film-shaped portion formed on the surface of the fourth lens 54, and blocks harmful light in the imaging optical system O. The light shielding portion 54d includes a synthetic resin. The light shielding portion 54d is disposed in a non-effective optical area of the fourth lens 54. The effective light path of the imaging optical system O is determined by the light shielding portion 54d.
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