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:
Nov. 07, 2017
Filed:
Nov. 09, 2012
Citizen Holdings Co., Ltd., Nishitokyo-shi, Tokyo, JP;
Seiko Kato, Tokorozawa, JP;
CITIZEN WATCH CO., LTD., Tokyo, JP;
Abstract
An optical device () includes laser light sources (to), polarization films (to), and a stacked wave plate (). The laser light sources (to) respectively output light of a different wavelength. The stacked wave plate () includes multiple wave plates (to) and induces a phase difference on polarization components of transmitted light. The polarization films (to) adjust the polarization direction of the light such that an angle between polarization directions of the light emitted by the laser light sources (to) and input to the stacked wave plate () becomes an angle that corrects an orientation angle difference that occurs at the stacked wave plate (), consequent to differences in the wavelength of the light.