Light source apparatus and projection type display apparatus
AssigneeCanon Kabushiki Kaisha
InventorToshiyuki Noda
Life of this patent
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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.
Claims17
A light source apparatus comprising:
- 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,
- wherein, upon the first light source failing, the controller controls the cooler based on the detection result of the second detector without using the detection result of the first detector.
A projection type display apparatus comprising:
- a projection lens;
- 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,
- wherein, upon the first light source failing, the controller controls the cooler based on the detection result of the second detector without using the detection result of the first detector.
A light source apparatus comprising:
- 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,
- wherein the controller provides different controls between when the first light source fails while the second light source functions and when the second light source fails while the first light source functions.
A light source apparatus comprising:
- 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,
- wherein the controller provides different controls between when the first light source does not emit light while the second light source emits light and when the second light source does not emit light while the first light source emits light.
Dependencies are inferred from the claim text.