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.

Date of Patent:
Oct. 13, 2015

Filed:

Jul. 30, 2014
Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Kazuyuki Ishihara, Utsunomiya, JP;

Yuichi Tomioka, Utsunomiya, JP;

Shuichi Kurokawa, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 15/14 (2006.01); B41J 27/00 (2006.01); G02B 26/12 (2006.01); G03G 15/04 (2006.01); B41J 2/47 (2006.01); G06K 15/12 (2006.01); H04N 1/113 (2006.01);
U.S. Cl.
CPC ...
G02B 26/125 (2013.01); G02B 26/124 (2013.01); G03G 15/04036 (2013.01); B41J 2/471 (2013.01); G06K 15/1219 (2013.01); H04N 1/1135 (2013.01); H04N 2201/0082 (2013.01);
Abstract

A light scanning apparatus includes a light source, a deflector configured to deflect a light flux from the light source, and an imaging optical system configured to guide the light flux deflected at the deflector onto a scanned surface. The imaging optical system consists of a single imaging optical element, wherein, on the optical axis of the imaging optical system, the conditions 0.15≦T2/Sk≦0.3 and 0.03≦d/K≦0.08 are satisfied. A condition 0.3≦B≦0.6 is satisfied at a condensing position Y where a scanning angle θ is greatest, when the condensing position Y in the main scanning direction on the scanned surface of the light flux deflected at the scanning angle θ by the deflector is expressed by Y=(K/B)×tan(B×θ).


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