Projecting type image display apparatus including light source control unit and cooling control unit
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United States of America Patent
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Aug 29, 2017
Issued Date -
N/A
app pub date -
Jul 23, 2014
filing date -
Jul 26, 2013
priority date (Note) -
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Abstract
An image display apparatus including a light source; a light source control unit configured to control electric power to be supplied to the light source; a light source cooling unit configured to cool the light source; a cooling control unit configured to control the light source cooling unit; an image display device; an illumination optical system configured to introduce light from the light source to the image display device, and a projecting optical system configured to project light modulated by the image display device. When the light source control unit receives a turn-off command, the light source control unit first lowers electric power to be supplied to the light source to a predetermined electric power lower than normal electric power to be supplied when the lamp is on, and then blocks the supply of the electric power to the light source, thereby turning the light source off.
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