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. 23, 2015
Filed:
Jun. 06, 2014
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Akihiro Matsusue, Tokyo, JP;
Koichi Nakamura, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01); G02B 7/00 (2006.01); C03C 27/02 (2006.01); C03B 23/00 (2006.01);
U.S. Cl.
CPC ...
G02B 7/008 (2013.01); C03C 27/02 (2013.01); C03B 23/0013 (2013.01); G02B 7/028 (2013.01);
Abstract
A lens cap for an optical module includes: a barrel of a metal material; and a press lens of glass and held in the barrel. The coefficient of linear expansion of the glass is 6 to 8 ppm/K, and the coefficient of linear expansion of the metal material is at least 10 ppm/K at 150° C. to 800° C. and no more than 8 ppm/K at up to 100° C. or below.