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:
Feb. 16, 1993
Filed:
May. 11, 1992
Applicant:
Inventor:
Michitaka Setani, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
2502081 ; 250226 ;
Abstract
An image reading device includes a plural-line sensor containing plural line sensor arrays formed on a substrate, a telecentric imaging optical system for forming the image of an object on the sensor, and a blazed diffraction grating positioned in the optical path between the imaging optical system and the sensor and adapted to separate the light from the object into plural color components and to guide the color-separated light to respectively corresponding sensor arrays.