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.

Date of Patent:
Sep. 30, 2014

Filed:

Dec. 20, 2012
Applicant:

Panasonic Corporation, Osaka, JP;

Inventors:

Toshiyasu Tanaka, Osaka, JP;

Noriaki Terahara, Osaka, JP;

Takeshi Ohta, Osaka, JP;

Shinsuke Hatanaka, Osaka, JP;

Fumitomo Yamasaki, Nara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01); G11B 7/1378 (2012.01); G11B 7/12 (2012.01); G02B 13/18 (2006.01); G02B 7/02 (2006.01); G11B 7/1372 (2012.01); G11B 7/22 (2006.01);
U.S. Cl.
CPC ...
G02B 7/02 (2013.01); G11B 7/1378 (2013.01); G11B 7/1205 (2013.01); G02B 13/18 (2013.01); G11B 7/1372 (2013.01); G02B 7/025 (2013.01); G11B 7/22 (2013.01);
Abstract

The present application discloses detection lens provided with lens portion and flange portion including first surface connected to lens portion and second surface opposite to first surface. Flange portion includes base along optical axis of lens portion, and first to fourth projections projecting from base. First and second projections are point-symmetric around optical axis. Third and fourth projections are point-symmetric around optical axis. Flange portion excludes projection extending beyond second surface. First projection includes first intersecting surface which intersects with first axis. Second projection includes second intersecting surface which intersects with first axis. Third projection includes third intersecting surface which intersects with second axis. Fourth projection includes fourth intersecting surface which intersects with second axis. First distance between first and second intersecting surfaces is longer than second distance between third and fourth intersecting surfaces.


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