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:
Jun. 02, 2020
Filed:
Jan. 10, 2017
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Ken′ichi Kasazumi, Osaka, JP;
Toshiya Mori, Osaka, JP;
Kosuke Kubota, Osaka, JP;
Masahito Ogata, Osaka, JP;
Hiroaki Okayama, Nara, JP;
Satoshi Kuzuhara, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/14 (2006.01); G02B 3/08 (2006.01); B60K 35/00 (2006.01); G02B 27/01 (2006.01); G01C 21/36 (2006.01);
U.S. Cl.
CPC ...
G02B 3/08 (2013.01); B60K 35/00 (2013.01); G02B 27/01 (2013.01); G02B 27/0101 (2013.01); B60K 2370/1529 (2019.05); B60K 2370/334 (2019.05); G01C 21/365 (2013.01); G02B 2027/0118 (2013.01);
Abstract
The present invention provides a Fresnel lens that can reduce generation of concentric stray light. The Fresnel lens includes a sawtooth corrugated face that is formed by alternately disposing a first face inclined relative to optical axis A and a second face substantially parallel to optical axis A, and a light shielding mask is formed at a position corresponding to the second face.