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:
Sep. 08, 1998
Filed:
Jul. 17, 1997
Applicant:
Inventors:
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359819 ; 359800 ; 369100 ;
Abstract
A collimating lens unit is provided that includes a collimating lens, a lens holder which holds the collimating lens, and an adhesive which secures the collimating lens to the lens holder. The adhesive is applied to remain outside of an effective area of the collimating lens, so that an output beam emitted from the collimating lens unit is not shaded by the adhesive. In particular, the effective area is determined based on the characteristics of an optical system which includes the collimating lens.