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Title:
OPTICAL CONVERSION DEVICE AND ILLUMINATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/201138
Kind Code:
A1
Abstract:
An optical conversion device according to the present invention comprises a wavelength conversion section in which a plurality of phosphor regions are disposed, a drive unit, and a control unit. The plurality of phosphor regions include a first phosphor region that emits, in response to irradiation with excitation light, fluorescence having a first wavelength spectrum, and a second phosphor region that emits, in response to irradiation with excitation light, fluorescence having a second wavelength spectrum differing from the first wavelength spectrum. The drive unit changes an irradiated region, onto which the excitation light is radiated, in the plurality of phosphor regions. The control unit controls the drive unit so as to set the irradiated region in the plurality of phosphor regions by changing the irradiated region in the plurality of phosphor regions via the driving of the drive unit and then stopping the driving of the drive unit.

Inventors:
NIINO NORITAKA (JP)
AKASHI TOMOYOSHI (JP)
Application Number:
PCT/JP2021/013941
Publication Date:
October 07, 2021
Filing Date:
March 31, 2021
Export Citation:
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Assignee:
KYOCERA CORP (JP)
International Classes:
F21V8/00; F21V7/08; F21V7/26; G02B5/20; H01L33/50; H01S5/022; F21Y115/10; F21Y115/30
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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