The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 2010
Filed:
Feb. 11, 2009
Hiroshi Nomura, Saitama, JP;
Takamitsu Sasaki, Saitama, JP;
Kazunori Ishizuka, Kanagawa, JP;
Kunihiko Shimizu, Saitama, JP;
Hiroshi Nomura, Saitama, JP;
Takamitsu Sasaki, Saitama, JP;
Kazunori Ishizuka, Kanagawa, JP;
Kunihiko Shimizu, Saitama, JP;
Hoya Corporation, Tokyo, JP;
Abstract
A light shielding structure of an optical device, includes a plurality of optical elements arranged at different positions in an optical axis direction. The light shielding structure includes at least one annular light shielding member positioned between two of the optical elements to shield harmful light, and a plurality of springs held between the two optical elements to be resiliently deformable in the optical axis direction. The springs include at least two springs, one of which is held between one of the two optical elements and the annular light shielding member while the other of the two springs is held between the other of the two optical elements and the annular light shielding member. The annular light shielding member is supported between the two optical elements in a balanced state between the spring forces of the plurality of springs.