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:
Aug. 20, 2018
Filed:
Nov. 01, 2016
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-Shi, Aichi-Ken, JP;
Abstract
In a scanning optical apparatus, an illumination optical system has a diffractive power φdM and a refractive power φnM in a main scanning direction, and a ratio φnM/φdM in the main scanning direction for a focal length fi in a range of 10-22 mm satisfies: g2(fi)≤φnM/φdM≤g1(fi), where A(Z)=(1.897×10)Z+6744Z+0.5255, B(Z)=(2.964×10)Z+5645Z+0.6494, C(Z)=(3.270×10)Z+3589Z+0.5250, D(Z)=(5.016×10)Z+4571Z+0.8139, g1(fi)=fi{D(Z)−B(Z)}/12−5D(Z)/6+11B(Z)/6,g2(fi)=fi{C(Z)−D(Z)}/12−5C(Z)/6+11A(Z)/6g2(fi)=fi{C(Z)−A(Z)}/12−5C(Z)/6+11A(Z)/6.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile