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. 13, 2006
Filed:
Mar. 26, 2003
Nobuo Watanabe, Shiojiri, JP;
Shuji Narimatsu, Suwa, JP;
Tomonobu Machida, Naganoka-ken, JP;
Shunji Umemura, Nagano-ken, JP;
Shohei Fujisawa, Matsumoto, JP;
Nobuo Watanabe, Shiojiri, JP;
Shuji Narimatsu, Suwa, JP;
Tomonobu Machida, Naganoka-ken, JP;
Shunji Umemura, Nagano-ken, JP;
Shohei Fujisawa, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projection lens () comprises: a cylindrical exterior case () having a lens-shifting through-hole () on a side thereof and an inner circumferential step or inner flange (); a lens () of which outer periphery () on a first side is abutted to the inner circumferential step or inner flange (); a flexible or elastic spacer () abutted to an outer periphery () of a second side of the lens (); and a retainer () holding the spacer (), where the lens () is fixed on the exterior case ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile