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:
Oct. 19, 2004
Filed:
Nov. 21, 2002
Hiroki Yoshikawa, Gunma, JP;
Masatoshi Ishii, Fukui, JP;
Shigeru Konishi, Gunma, JP;
Toru Shirasaki, Gunma, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
There is provided A method for producing an optical device by bonding optical elements each other without using adhesive wherein the optical elements are bonded each other by using optical elements in which the relation between linear expansion coefficients &agr;1 and &agr;2 (/° C.) of each of the optical elements to be bonded and thickness t2 (m) of one of the optical elements satisfies the following formula: |(&agr;1−&agr;2)×t2|≦10 and t2≧2×10 ; and/or, by sticking the optical elements each other in the state of being heated, and then subjecting them to a heat treatment. There can be provided a small size and highly reliable optical devise by bonding optical elements each other without using an adhesive at a low cost.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile