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:
May. 08, 2012
Filed:
Jul. 21, 2010
Applicants:
Toru Nanba, Osaka, JP;
Tetsuya Suzuki, Osaka, JP;
Toshiaki Takano, Osaka, JP;
Tomokazu Tokunaga, Hyogo, JP;
Inventors:
Toru Nanba, Osaka, JP;
Tetsuya Suzuki, Osaka, JP;
Toshiaki Takano, Osaka, JP;
Tomokazu Tokunaga, Hyogo, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A concave lens as an optical component is made of glass containing 20 to 22% of BO, 30 to 40% of LaO, and 19 to 25% of ZnO, expressed as wt %. The concave lens has a thickness tin its center portion of 0.5 mm or less, and a ratio (W/t) of a diameter W with respect to the thickness tof 24 or more. The concave lens can be produced suitably by press forming.