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:
May. 17, 1994
Filed:
Mar. 06, 1991
Applicant:
Inventors:
Hiromichi Nagane, Yokohama, JP;
Koji Takahashi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
358475 ; 359 87 ;
Abstract
An original illuminating device includes LED (light-emitting diode) chips and a lens for condensing light emitted from the LED chips on an original-reading position, on the same substrate. The device is configured so as to prevent randomly-reflected light in the device from being specularly reflected by an original-mount glass toward a reading device. Since the specularly-reflected light is not incident upon the reading device, only light corresponding to an image on an original is incident upon the reading device. It is therefore possible to correctly read the original.