Title:
光源光学系、光源装置及び画像投射装置
Document Type and Number:
Japanese Patent JP7428070
Kind Code:
B2
Abstract:
To provide a light source optical system, a light source device and an image projection device excellent in the utilization efficiency of light.SOLUTION: A light source optical system used with a plurality of excitation light sources emitting the first color light comprises: a wavelength conversion unit on which the first color light emitted from the plurality of excitation light sources is incident and which emits the second color light having a different wavelength from the first color light; and a first optical system and a second optical system with positive power which are provided in order on an optical path between the plurality of excitation light sources and the wavelength conversion unit. The light condensing point of each light flux emitted from the plurality of excitation light sources is formed between the first optical system and the second optical system.SELECTED DRAWING: Figure 6
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Inventors:
▲高▼野 洋平
Application Number:
JP2020087588A
Publication Date:
February 06, 2024
Filing Date:
May 19, 2020
Export Citation:
Assignee:
株式会社リコー
International Classes:
G03B21/14; F21S2/00; F21V5/00; F21V7/28; F21V9/14; H04N9/31
Domestic Patent References:
| JP2017073245A | ||||
| JP2017194523A | ||||
| JP2015040892A | ||||
| JP2018055875A | ||||
| JP2014186148A |
Foreign References:
| WO2014192115A1 | ||||
| WO2014196015A1 |
Attorney, Agent or Firm:
Infot Patent Attorney Corporation
Hiroyoshi Aoki
Hiroyoshi Aoki