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.

Date of Patent:
Jan. 02, 2024

Filed:

Mar. 17, 2022
Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventor:

Kunihiko Takagi, Okaya, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
G03B 21/204 (2013.01); G03B 21/208 (2013.01);
Abstract

A light source apparatus includes a light source configured to emit first light, a wavelength converter configured to convert the first light into second light, an optical element disposed in an optical path of the first light to be incident on the wavelength converter, a light collector configured to collect the first light emitted from the optical element toward the wavelength converter, and a driver configured to rotate the optical element and the light collector around a rotation axis parallel to a first optical axis of the first light. The optical element has a first surface on which the first light is incident and a second surface via which the first light exits. The first light emitted from the light collector is incident on the wavelength converter along the second optical axis. The first optical axis and the second optical axis are shifted from each other.


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