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. 17, 2026
Filed:
Jan. 12, 2023
Seiko Epson Corporation, Tokyo, JP;
Hidefumi Sakata, Azumino, JP;
Mizuha Hiroki, Nagano-Ken, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source apparatus according to an aspect of the present disclosure includes a light emitter that outputs first light, a wavelength conversion member that converts the first light into second light, an output section that outputs the second light, and a light collection member. The output section includes a first end section that faces the wavelength conversion member, a second end section that is located at the side opposite from the first end section along a center axis, and a tapering section that has a cross-sectional area that is perpendicular to the center axis and gradually decreases from the first end section toward the second end section, and the tapering section has a light output surface which inclines with respect to the center axis and via which the second light exits. The light collection member includes a third end section that is relatively close to the wavelength conversion member, a fourth end section that is located at the side opposite from the third end section, and a reflection surface that faces the light output surface and reflects the second light. At least a portion of the reflection surface of the light collection member, the portion facing the fourth end section, is separate from the light output surface at the side facing the second end section of the output section.