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. 25, 2025
Filed:
Dec. 23, 2022
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Aya Kurita, Osaka, JP;
Hirokazu Sakaguchi, Osaka, JP;
PANASONIC PROJECTOR & DISPLAY CORPORATION, Osaka, JP;
Abstract
There is provided a low-cost lighting optical system not requiring the refractive element for each laser chip. A lighting optical system includes: a light source including a plurality of multi-emitter laser chips arrayed in a first direction that intersects a light output direction, the plurality of multi-emitter laser chips each having a first emitter outputting first emitter light and a second emitter outputting second emitter light; a plurality of convex lenses each having a center between the first emitter and the second emitter of each of the multi-emitter laser chips, the plurality of convex lenses each arranged in close proximity to a corresponding one of the multi-emitter laser chips; and a first refractive element arranged on light output direction side with respect to the plurality of convex lenses, the first refractive element having a first surface receiving two or more first emitter lights output from the plurality of multi-emitter laser chips and a second surface receiving two or more second emitter lights output from the plurality of multi-emitter laser chips, the first refractive element turning the first emitter lights and the second emitter lights into approximately parallel lights.