Projector and Method for adjusting projective luminance thereof
First Claim
Patent Images
1. A projector comprising:
- a housing;
a projecting module installed inside the housing, the projecting module comprising;
a light source for emitting light;
a light valve for modulating the light into image light; and
a projection lens for projecting the image light onto a screen to form an image;
a first luminance sensor installed on the housing for sensing the luminance of the image; and
a control module installed inside the housing and coupled to the light source and the first luminance sensor for adjusting the luminance of the light emitted from the light source according to a sensed result of the first luminance sensor.
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Abstract
A projector includes a housing, a projecting module, a first luminance sensor, a second luminance sensor and a control module. The projecting module includes a light source for emitting light, a light valve for modulating the light into image light, and a projection lens for projecting the image light to a screen. The first luminance sensor senses the luminance of the image projected on the screen. The second luminance sensor senses the ambient luminance. The control module adjusts luminance of the light emitted from the light source according to sensed results of the two luminance sensors.
23 Citations
19 Claims
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1. A projector comprising:
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a housing; a projecting module installed inside the housing, the projecting module comprising; a light source for emitting light; a light valve for modulating the light into image light; and a projection lens for projecting the image light onto a screen to form an image; a first luminance sensor installed on the housing for sensing the luminance of the image; and a control module installed inside the housing and coupled to the light source and the first luminance sensor for adjusting the luminance of the light emitted from the light source according to a sensed result of the first luminance sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A projector comprising:
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a housing; a projecting module installed inside the housing, the projecting module comprising; a light source for emitting light; a light valve for modulating the light into image light; and a projection lens for projecting the image light onto a screen to form an image; a distance sensor installed on the housing for sensing a distance between the projector and the screen; a luminance sensor installed on the housing for sensing the ambient luminance of the projector; and a control module installed inside the housing and coupled to the light source, the distance sensor and the luminance sensor for adjusting the luminance of the light emitted from the light source according to sensed results of the distance sensor and the luminance sensor. - View Dependent Claims (9, 10, 11)
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12. A method of adjusting the luminance of an image light projected by a projector, the method comprising:
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(a) sensing a distance between the projector and the screen; (b) sensing the ambient luminance of the projector; and (c) adjusting the luminance of the light emitted by the projector according to sensed results of the step (a) and the step (b). - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification