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:
Feb. 12, 2019
Filed:
Nov. 07, 2017
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Takaaki Tanaka, Osaka, JP;
Abstract
A light source device according to the present disclosure includes: a plurality of solid-state light source units; a polarization combination mirror for combining polarized lights incident from the plurality of the solid-state light source units; a half-wavelength plate having a strip shape, for converting a polarization azimuth of one of polarized lights coming from the polarization combination mirror; another half-wavelength plate for controlling proportions of intensities of polarization components of the polarized lights incident from the former half-wavelength plate; a dichroic mirror for separating the polarized lights incident from the latter half-wavelength plate; a phosphor plate for emitting light, upon being excited by the polarized light having been separated by the dichroic mirror.