Title:
投射型表示装置
Document Type and Number:
Japanese Patent JP7005362
Kind Code:
B2
Abstract:
A light source apparatus includes a plurality of light sources, a heat receiver configured to receive heat from the plurality of light sources, a cooler configured to cool the heat receiver, a first detector configured to detect a temperature near a first light source among the plurality of light sources, a second detector configured to detect a temperature near a second light source among the plurality of light sources; and a controller configured to control the cooler based on detection results of the first detector and the second detector. When the detection result of the first detector cannot be used, the controller controls the cooler based on a value of the detection result of the second detector without using the detection result of the first detector.
Inventors:
Toshiyuki Noda
Application Number:
JP2018011391A
Publication Date:
February 04, 2022
Filing Date:
January 26, 2018
Export Citation:
Assignee:
Canon Inc
International Classes:
G03B21/14; F21S2/00; F21V23/00; F21V29/503; F21V29/61; G03B21/00; G03B21/16; H04N5/74
Domestic Patent References:
| JP2014194500A | ||||
| JP2015215379A | ||||
| JP2017152355A | ||||
| JP2013073068A | ||||
| JP2013008950A | ||||
| JP2006162653A |
Foreign References:
| WO2010041500A1 | ||||
| US20070115686 | ||||
| CN203909460U |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Tomoya Hirayama
Atsuya Mizumoto
Tomoya Hirayama