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:
May. 26, 2026
Filed:
Jun. 01, 2023
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
PANASONIC PROJECTOR & DISPLAY CORPORATION, Osaka, JP;
Abstract
A light source device includes: a light source unit emitting first light in a first polarization direction and second light in a second polarization direction; a polarization separation element receiving the first light and the second light; a phosphor receiving the first light transmitted through the polarization separation element; and a phase conversion element receiving the second light reflected by the polarization separation element. The polarization separation element reflects visible light having a longer wavelength than a polarization transmission wavelength region. The phosphor converts the received first light into third light having a longer wavelength than the polarization transmission wavelength region. The phase conversion element phase-converts the received second light into fourth light in the first polarization direction. The polarization separation element combines illumination light with the third light reflected by the polarization separation element and the fourth light transmitted through the polarization separation element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile