Title:
光源装置及びプロジェクター
Document Type and Number:
Japanese Patent JP6841269
Kind Code:
B2
Abstract:
A light source device is provided with a blue laser emitting element, a red laser emitting element, a phosphor, a polarization split element having a polarization split function with respect to blue light and red light, and a diffusion element. The blue light emitted from the blue laser emitting element enters the polarization split element to be split into a first blue polarization component and a second blue polarization component. The first blue polarization component enters the diffusion element to turn to blue diffused light. The phosphor is excited by the second blue polarization component to emit fluorescence, and the red light emitted from the red laser emitting element enters the diffusion element to be diffusely transmitted to turn to red diffused light. The blue diffused light, the red diffused light and a part of the fluorescence are combined with each other, and then emitted from the polarization split element.
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Inventors:
Shoichi Uchiyama
Application Number:
JP2018116907A
Publication Date:
March 10, 2021
Filing Date:
June 20, 2018
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G03B21/14; F21S2/00; F21V7/00; F21V9/30; H04N9/31
Domestic Patent References:
| JP2012234161A | ||||
| JP2015106130A |
Foreign References:
| CN107422595A |
Attorney, Agent or Firm:
Yasushi Matsunuma
Kazunori Onami
Hiroyuki Matsumoto
Akio Sato
Kazunori Onami
Hiroyuki Matsumoto
Akio Sato