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:
Jan. 17, 2017
Filed:
Oct. 01, 2015
Nalux Co., Ltd., Osaka-shi, Osaka, JP;
NALUX CO., LTD., Osaka-shi, Osaka, JP;
Abstract
An optical scanning system includes a variable-focus element, an imaging lens and a deflector, wherein the reciprocal of the focal length f of the variable-focus element is changed from 1/fto/f, and for the case that the equation1/={(1/)+(1/)}/2holds, a beam which has passed through the variable-focus element is a divergent beam, and is satisfied, where xrepresents a distance from a virtual image point of the divergent beam to the principal point on the entry side of the variable-focus element, xrepresents a distance from the principal point on the exit side of the variable-focus element to the principal point on the entry side of the imaging lens, and x3 represents a distance from the principal point on the exit side of the imaging lens to an image point.