DEVICE AND METHOD FOR REDUCING SPECKLE IN PROJECTED IMAGES
First Claim
Patent Images
1. An image projector comprising:
- first, second, and third light modules, each of the light modules comprising;
a light source; and
a diffusing screen coupled to an in-plane vibrator, wherein the diffusing screen is positioned to receive light from the light source and generate phase-modulated light, wherein the phase-modulated light from the light source of the first light module is a first color light, the phase-modulated light from the light source of the second light module is a second color light, and the phase-modulated light from the light source of the third light module is a third color light;
a dichroic combiner cube coupled to receive and combine the first color light, the second color light, and the third color light into display light;
a collimating element positioned between each of the light modules and the dichroic combiner cube to collimate the first color light, the second color light, and the third color light; and
a display panel positioned to receive the display light, wherein the display panel is configured to generate a projectable image using the display light.
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Accused Products
Abstract
An image projector includes a light source for displaying light and a diffusing screen coupled to an in-plane vibrator. The diffusing screen is positioned to receive the display light from the light source and generate phase-modulated display light. The image projector also includes a collimating element positioned to receive the phase-modulated display light. The image projector further includes a display panel positioned to receive the phase-modulated display light after being collimated by the collimating element. The display panel is configured to generate a projectable image using the phase-modulated display light.
33 Citations
28 Claims
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1. An image projector comprising:
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first, second, and third light modules, each of the light modules comprising; a light source; and a diffusing screen coupled to an in-plane vibrator, wherein the diffusing screen is positioned to receive light from the light source and generate phase-modulated light, wherein the phase-modulated light from the light source of the first light module is a first color light, the phase-modulated light from the light source of the second light module is a second color light, and the phase-modulated light from the light source of the third light module is a third color light; a dichroic combiner cube coupled to receive and combine the first color light, the second color light, and the third color light into display light; a collimating element positioned between each of the light modules and the dichroic combiner cube to collimate the first color light, the second color light, and the third color light; and a display panel positioned to receive the display light, wherein the display panel is configured to generate a projectable image using the display light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An image projector comprising:
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a light source for providing display light; a diffusing screen coupled to an in-plane vibrator, wherein the diffusing screen is positioned to receive the display light from the light source and generate phase-modulated display light; a collimating element positioned to receive the phase-modulate display light; and a display panel positioned to receive the phase-modulated display light after being collimated by the collimating element, wherein the display panel is configured to generate a projectable image using the phase-modulated display light. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of reducing speckles in a projected image comprising:
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providing display light; phase-modulating the display light; collimating the display light; generating a projectable image with the display light using a display panel that receives the display light after the display light has been collimated and phase-modulated. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification