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:
Apr. 07, 2026
Filed:
Feb. 24, 2023
Seiko Epson Corporation, Tokyo, JP;
Mizuha Hiroki, Zama, JP;
Hidefumi Sakata, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source apparatus according to an aspect of the present disclosure includes a light emitter, a wavelength conversion member, and an output section. The output section includes a first end section having a first surface facing the wavelength conversion member, a second end section located at the side opposite from the first end section, and second, third, fourth, and fifth surfaces in contact with the first and second end sections. The cross-sectional area of the output section taken along a plane perpendicular to the center axis gradually decreases from the first end section toward the second end section. The second, third, fourth, and fifth surfaces each incline with respect to the first surface. The inclination angle of each of the second, third, fourth, and fifth surfaces with respect to the first surface is greater than or equal to 40° but smaller than or equal to 58°.