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. 06, 2021
Filed:
May. 27, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Yuuki Maeda, Utsunomiya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A light source device includes a light source unit configured to emit light of a first wavelength band, a light guide unit, a wavelength conversion unit configured to convert the light emitted from the light source unit into light of a second wavelength band different from the first wavelength band, and a diffusion unit configured to diffuse the light emitted from the light source unit. The light guide unit includes a first portion and a second portion. The first portion is configured to guide a part of the light emitted from the light source unit to the wavelength conversion unit, to guide remainder to the diffusion unit, and to guide light from the diffusion unit to a system in a subsequent stage. The second portion is configured to guide light from the wavelength conversion unit to the system in the subsequent stage.