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. 21, 1982
Filed:
Jul. 08, 1980
Noritaka Mochizuki, Yokohama, JP;
Setsuo Minami, Kawasaki, JP;
Yoshiya Matsui, Yokohama, JP;
Atsuo Tsunoda, Fuchu, JP;
Koyo Midorikawa, Tokyo, JP;
Hidetoshi Murase, Yokohama, JP;
Mikio Suzuta, Tokyo, JP;
Masazumi Moriwaki, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A projecting device having an array, in a plane perpendicular to the optical axis, of plural element lens systems each axially provided with two bar lenses of an axial length larger than the effective diameter thereof, characterized by the presence of an intermediate ring positioned between two bar lenses for extracting the effective beam emerging from the first bar lens and entering the second bar lens and providing a determined light intensity distribution on the projection plane.