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:
Mar. 19, 1985
Filed:
May. 01, 1984
Applicant:
Inventors:
Susumu Seto, Odawara, JP;
Akihiko Toriumi, Kaisei, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ; 355 35 ; 353 84 ; 350409 ; 350438 ; 501 11 ; 501 78 ;
Abstract
A projection apparatus includes an optical system for forming an image of an object illuminated by an illumination source on a photosensitive member. In the projection apparatus according to the invention, at least one lens in the lens system disposed in the optical path extending from the illumination source to the photosensitive member is such lens which possesses a property of spectral transmission factor to compensate the spectral sensitivity of the photosensitive member.