Speckle mitigation in laser projection systems
First Claim
1. A laser projection system comprising a light source and scanning optics wherein:
- the scanning optics comprises a plurality of frame generating actuators and an actuator selector;
the light source comprises at least one laser configured to emit an output beam;
the actuator selector is positioned in an optical path of the output beam and configured to direct the output beam towards a selected one of the plurality of frame generating actuators;
each of the frame generating actuators is configured to scan the output beam across a given projection surface to generate an image frame; and
the frame generating actuators are spatially separated such that output beams scanned by the frame generating actuators illuminate each common pixel portion of the image frames at a different incidence angle.
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Accused Products
Abstract
Particular embodiments relate generally to laser projection systems and, more particularly, to systems and methods of reducing the appearance of speckle in laser projection images. According to one embodiment, a laser projection system comprising a light source and scanning optics is provided. The scanning optics include a plurality of frame generating optics configured to scan the output beam across a given projection surface to generate an image frame. The frame generating actuators are spatially separated such that output beams scanned by the frame generating actuators illuminate each common pixel portion of the image frames at a different incidence angle. The scanning optics also include an actuator selector positioned in an optical path of the output beam and configured to direct the output beam towards a selected one of the plurality of frame generating actuators.
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Citations
20 Claims
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1. A laser projection system comprising a light source and scanning optics wherein:
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the scanning optics comprises a plurality of frame generating actuators and an actuator selector; the light source comprises at least one laser configured to emit an output beam; the actuator selector is positioned in an optical path of the output beam and configured to direct the output beam towards a selected one of the plurality of frame generating actuators; each of the frame generating actuators is configured to scan the output beam across a given projection surface to generate an image frame; and the frame generating actuators are spatially separated such that output beams scanned by the frame generating actuators illuminate each common pixel portion of the image frames at a different incidence angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating a laser projection system comprising:
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operating a light source to emit at least one output beam; directing the output beam towards a selected one of a plurality of frame generating actuators; and generating at least a portion of a scanned laser image on the given projection surface by operating the light source for output emission of encoded image data and controlling the selected frame generating actuator to scan the output beam across a plurality of image pixels to define the image frame, wherein the frame generating actuators are spatially separated such that output beams scanned by the frame generating actuators illuminate each common pixel portion of the image frames at a different incidence angle. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of operating a laser projection system comprising a light source and scanning optics comprising a plurality of frame generating actuators and an actuator selector, the method comprising:
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operating the light source for output emission of encoded image data in the form of at least one output beam; controlling the actuator selector to direct the output beam towards a selected one of the plurality of frame generating actuators; and controlling the selected frame generating actuator to scan the output beam across a plurality of image pixels to define an image frame, wherein the frame generating actuators are spatially separated such that output beams scanned by the frame generating actuators illuminate each common pixel portion of the image frames at a different incidence angle. - View Dependent Claims (18, 19, 20)
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Specification