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. 14, 2023
Filed:
Mar. 29, 2022
Seiko Epson Corporation, Tokyo, JP;
Hidefumi Sakata, Azumino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A light source apparatus includes a first light source that outputs first excitation light having a first wavelength band, a second light source that outputs second excitation light having a second wavelength band, a third light source that outputs third light having a third wavelength band, a wavelength converter that has a first surface and a second surface and converts the first excitation light and the second excitation light in term of wavelength and emits fourth light having a fourth wavelength band, and a light combiner that combines the third light outputted from the third light source with the fourth light emitted from the wavelength converter to generate illumination light. The first excitation light outputted from the first light source is incident on the first surface of the wavelength converter via the light combiner, and the second excitation light outputted from the second light source is incident on the second surface of the wavelength converter.