Projector
First Claim
Patent Images
1. An apparatus comprising:
- a projector configured to sequentially project colors of light;
a light sensitive device;
a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device;
a screen configured to be illuminated by the colors; and
a light source configured to project visible light towards the screen, wherein the light sensitive device is configured to receive light during projection of said one of the colors and not during projection of a remainder of the colors.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus projects at least one color of light which is attenuated.
29 Citations
53 Claims
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1. An apparatus comprising:
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a projector configured to sequentially project colors of light; a light sensitive device; a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device; a screen configured to be illuminated by the colors; and a light source configured to project visible light towards the screen, wherein the light sensitive device is configured to receive light during projection of said one of the colors and not during projection of a remainder of the colors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method comprising:
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projecting a first light of at least one color through a rotating color wheel towards a screen, wherein the projecting the first light includes projecting light in a sequential series of colors; projecting a second visible light towards the screen; synchronously rotating a second color wheel, through which at least a portion of the second light passes, with the first color wheel; attenuating the first light; and sensing the second light. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A method comprising:
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projecting a first light of at least one color towards a screen; projecting a second light towards the screen; attenuating the first light; sensing the second light; and positioning a first surface and a second surface adjacent the screen at first and second positions, respectively, while the first light forms a first image on the screen, wherein sensing the second light includes sensing the second light after it has been reflected off of the first surface at the first position and off of the second surface at the second position to create a first signal; repositioning the first surface to a third position adjacent the screen while the first light forms a second image on the screen, wherein sensing the second light further includes sensing the second light after the second light has been reflected off of the first surface at the third position to produce a second signal; and comparing the first signal and the second signal. - View Dependent Claims (40, 41, 42, 43)
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44. A computer-readable medium comprising:
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stored instructions to attenuate a first light projected towards a screen; stored instructions to sense a second light projected towards a screen; and stored instructions to synchronize the positioning of a color filter relative to a light sensitive device with respect to a color wheel through which the first light passes. - View Dependent Claims (45, 46)
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47. A system comprising:
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a screen; a projector configured to sequentially project colors of light towards the screen, wherein the projector comprises a first color wheel; a light sensitive device; and a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device, wherein the filter comprises a second color wheel; and a synchronizer configured to synchronize rotation of the first color wheel and the second color wheel. - View Dependent Claims (48)
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49. An apparatus comprising:
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a projector configured to sequentially project colors of light; a light sensitive device; and a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device, wherein the light sensitive device is configured to receive light during projection of said one of the colors and not during projection of a remainder of the colors.
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50. An apparatus comprising:
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a projector configured to sequentially project colors of light; a light sensitive device; and a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device, wherein the filter is synchronized with the projector to filter the colors projected by the projector.
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51. An apparatus comprising:
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a projector configured to sequentially project colors of light; a light sensitive device; a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device; a screen configured to be illuminated by the colors; a light source configured to project light towards the screen; and a processor in communication with the light sensitive device, wherein the processor is configured to detect and compare signals from the light sensitive device based upon the light from the light source that is passed through the screen without being blocked at a first time to second signals from the light sensitive device based upon the light from the light source that is passed through the screen without being blocked at a second time.
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52. The apparatus comprising:
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a projector configured to sequentially project colors of light; a light sensitive device; a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device; a screen configured to be illuminated by the colors; and a light source configured to project visible light towards the screen; a screen configured to be illuminated by the colors; a light source configured to project light towards the screen; and a processor in communication with the light sensitive device, wherein the processor is configured to detect and compare first signals from the light sensitive device based upon reflected light from the light source at a first time to second signals from the light sensitive device based upon the reflected light from the light source at a second time, wherein the first signals from the light sensitive device are based upon the reflected light of the light source reflected from multiple first and second surfaces of first and second objects located at first and second positions, respectively, adjacent the screen and wherein the second signals from the light sensitive device are based upon the reflected light of the light source reflected from the first and second surfaces at third and fourth different positions, respectively.
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53. An apparatus comprising:
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a projector configured to sequentially project colors of light; a light sensitive device; a filter configured to attenuate at least one of the colors before a portion of the light impinges upon the light sensitive device; a screen configured to be illuminated by the colors; a light source configured to project visible light towards the screen; and a controller in communication with the light sensitive device and the projector, wherein the controller is configured to generate control signals actuating the light sensitive device during projection of said one of the colors and unactuating the light sensitive device during projection of another of the colors.
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Specification