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. 31, 2000
Filed:
Nov. 09, 1998
Masahiko Kato, Akiruno, JP;
Kenji Kitazawa, Hikone, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Takata Corporation, Tokyo, JP;
Abstract
A light transmitting lens includes in a portion thereof a diffusion element constituted by a number of small prisms. The small prisms have the same height and different pitches depending on distances from an optical axis. Accordingly, the small prisms have different apical angles depending on the distances from the optical axis. The light transmitting lens has a function for collimating lights incident on the small prisms with the same apical angle. Light beams passed through the region of the diffusion element of the light transmitting lens are deflected at predetermined angles depending on the positions, however, the light beams passed through the other region of the light transmitting lens are collimated without deflection.