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:
Mar. 15, 2016
Filed:
Jun. 27, 2012
Masafumi Ide, Tokorozawa, JP;
Seiko Kato, Tokorozawa, JP;
Takaaki Takeishi, Tokorozawa, JP;
CITIZEN HOLDINGS CO., LTD., Tokyo, JP;
Abstract
A light source unit () emits linearly polarized laser light of a given wavelength. A wave plate () transmits the laser light emitted from the light source unit () and has a phase delay axis of which the direction is adjusted to about 0 degrees with respect to the polarization direction () of the laser light. A liquid crystal cell () transmits laser light that has passed through the wave plate () and by a switchable rotation amount, rotates the polarization direction () of the laser light transmitted through the liquid crystal cell (). A wave plate () transmits laser light that has passed through the liquid crystal cell (); and further has a phase delay axis of which the direction is adjusted to about 0 degrees with respect to the polarization direction () of the laser light.