Image display device
AssigneeMitsubishi Electric Corporation
InventorMakoto Kuriaki
Life of this patent
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Abstract
There is provided an image display device including: a laser element that generates light for projecting and displaying an image on a display screen; a Peltier device unit that cools the laser element; a detecting unit that detects a temperature of the laser element; and a control unit that controls driving of the Peltier device unit so that a temperature detected by the detecting unit becomes a target temperature, wherein the control unit controls driving of the laser element to reduce a light output of the laser element when a driving rate of the Peltier device unit exceeds a threshold that indicates that the driving rate approaches a maximum value.
Claims2
An image display device comprising:
- a laser element that generates light for projecting and displaying an image on a display screen;
- a Peltier device unit that cools the laser element;
- a detecting unit that detects a temperature of the laser element;
- and
- a control unit that controls driving of the Peltier device unit so that a temperature detected by the detecting unit becomes a target temperature, wherein
- the control unit controls driving of the laser element to reduce a light output of the laser element when a driving rate of the Peltier device unit exceeds a threshold that indicates that the driving rate approaches a maximum value;
- and
- wherein the control unit controls the driving of the laser element to increase a light output of the laser element when a duration of a state, in which a driving rate of the Peltier device unit becomes lower than the threshold, is longer than a second threshold.
Dependencies are inferred from the claim text.