Stereoscopic image intensity balancing in light projector
First Claim
Patent Images
1. A stereoscopic light projection system comprising:
- a stereoscopic image forming subsystem configured at least to output stereoscopic light comprising modulated left-eye and right-eye light beams, including;
a light source subsystem configured to generate left-eye and right-eye light beams, anda light modulation subsystem configured to generate the modulated left-eye and right-eye light beams by modulating the respective left-eye and right-eye light beams in a manner consistent with stereoscopic image data;
a light-intensity sensing subsystem including at least one light intensity sensor to sense light intensities in either the left-eye and right-eye light beams or the modulated left-eye and right-eye light beams; and
a light-intensity-correction subsystem configured at least to (a) determine a difference in the sensed light intensities between the left-eye and right-eye light beams or between the modulated left-eye and right-eye light beams and (b) control the light source subsystem to change an intensity of the left-eye light beam or the right eye light beam if an absolute value of the determined difference in the sensed light intensities exceeds a threshold amount.
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Abstract
In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can include a light intensity sensor in an image path, in a light-source subsystem light-dump path, in a light-modulation subsystem light-dump path, in a position to measure light leaked from optical components, or combinations thereof.
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Citations
22 Claims
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1. A stereoscopic light projection system comprising:
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a stereoscopic image forming subsystem configured at least to output stereoscopic light comprising modulated left-eye and right-eye light beams, including; a light source subsystem configured to generate left-eye and right-eye light beams, and a light modulation subsystem configured to generate the modulated left-eye and right-eye light beams by modulating the respective left-eye and right-eye light beams in a manner consistent with stereoscopic image data; a light-intensity sensing subsystem including at least one light intensity sensor to sense light intensities in either the left-eye and right-eye light beams or the modulated left-eye and right-eye light beams; and a light-intensity-correction subsystem configured at least to (a) determine a difference in the sensed light intensities between the left-eye and right-eye light beams or between the modulated left-eye and right-eye light beams and (b) control the light source subsystem to change an intensity of the left-eye light beam or the right eye light beam if an absolute value of the determined difference in the sensed light intensities exceeds a threshold amount. - View Dependent Claims (2, 3, 4, 5, 6, 9, 20)
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7. A stereoscopic light projection system comprising:
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a stereoscopic image forming subsystem configured at least to output stereoscopic light of multiple color channels, each of the multiple color channels having its own associated left-eye and right-eye light beams; and a light-intensity-correction subsystem configured at least to (a) determine a difference in light intensity between the left-eye and right-eye light beams for each of the multiple color channels and (b) control the stereoscopic image forming subsystem to change an intensity of the left-eye light beam or right-eye light beam of a color channel if an absolute value of the determined difference in light intensity for that color channel exceeds a threshold amount. - View Dependent Claims (8)
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10. A method for correcting light intensity generated by an image forming system, the image forming subsystem including a light source subsystem configured to generate left-eye and right-eye light beams, and a light modulation subsystem configured to generate modulated left-eye and right-eye light beams by modulating the respective left-eye and right-eye light beams in a manner consistent with stereoscopic image data, the method comprising:
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determining a difference in light intensity between the left-eye and right-eye light beams or between the modulated left-eye and right-eye light beams; and controlling the light source subsystem to change an intensity of the left-eye light beam or the right-eye light beam if an absolute value of the determined difference in light intensity exceeds a threshold amount. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for correcting light intensity generated by an image forming system, the image forming subsystem including a light source subsystem configured to generate left-eye and right-eye light beams for each of a plurality of different color channels, and a light modulation subsystem configured to generate modulated left-eye and right-eye light beams for each of the plurality of different color channels by modulating the corresponding left-eye and right-eye light beams in a manner consistent with stereoscopic image data, the method comprising:
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determining a difference in light intensity between the left-eye and right-eye light beams or between the modulated left-eye and right-eye light beams for at least one of the plurality of color channels, and controlling the light source subsystem to change an intensity of the corresponding left-eye light beam or the corresponding right-eye light beam if an absolute value of the determined difference in light intensity exceeds a threshold amount; determining a white point associated with the plurality of different color channels, and controlling the light source subsystem to change an intensity of one or more of the color channels if an absolute value of the determined white point deviates from a predetermined white point by a threshold amount.
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21. A stereoscopic light projection system comprising:
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a light source subsystem configured at least to output unmodulated stereoscopic light comprising left-eye and right-eye light beams; a light-intensity sensing subsystem including at least one light intensity sensor to sense light intensities in the left-eye and right-eye light beams; and a light-intensity-correction subsystem configured at least to (a) determine a difference in the sensed light intensities between the left-eye and right-eye light beams and (b) control the light source subsystem to change an intensity of the left-eye light beam or the right eye light beam if an absolute value of the determined difference in the sensed light intensities exceeds a threshold amount.
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22. A method for correcting light intensity generated by a light source system configured to generate unmodulated left-eye and right-eye light beams, the method comprising:
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determining a difference in light intensity between the left-eye and right-eye light beams; and controlling the light source system to change an intensity of the left-eye light beam or the right-eye light beam if an absolute value of the determined difference in light intensity exceeds a threshold amount.
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Specification