Laser Projection System With a Spinning Polygon for Speckle Mitigation
First Claim
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1. A laser projection system comprising:
- (i) a coherent light source including at least one laser configured to emit an output beam carrying signal data;
(ii) a scanning optics, the scanning optics comprising at least one scanning reflector, the scanning reflector positioned in an optical path of the output beam; and
(iii) a rotating polygon prism;
wherein(a) the scanning reflector is configured to direct the output beam towards the polygon prism and scan the output beam across a projection surface; and
(b) the polygon prism is configured to transmit the scanned output beam through its body, and create a virtual image of the scanning reflector, such that said virtual image of the scanning reflector is moving when said polygon prism rotates.
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Abstract
A laser projection system comprises: (i) a coherent light source including at least one laser configured to emit an output beam carrying signal data; (ii) a scanning optics, the scanning optics comprising at least one scanning reflector, the scanning reflector positioned in an optical path of the output beam; and (iii) a rotating polygon prism; wherein
- (a) the scanning reflector is configured to
- direct the output beam towards the polygon prism and
- scan the output beam across a projection surface; and
- (b) the polygon prism is configured to
- transmit the scanned output beam through its body, and
- create a virtual image of the scanning reflector, such that said virtual image of the scanning reflector is moving when said polygon prism rotates.
- (a) the scanning reflector is configured to
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Citations
20 Claims
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1. A laser projection system comprising:
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(i) a coherent light source including at least one laser configured to emit an output beam carrying signal data; (ii) a scanning optics, the scanning optics comprising at least one scanning reflector, the scanning reflector positioned in an optical path of the output beam; and (iii) a rotating polygon prism;
wherein(a) the scanning reflector is configured to direct the output beam towards the polygon prism and scan the output beam across a projection surface; and (b) the polygon prism is configured to transmit the scanned output beam through its body, and create a virtual image of the scanning reflector, such that said virtual image of the scanning reflector is moving when said polygon prism rotates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A laser projection system comprising:
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(i) a coherent light source including at least one laser configured to emit an output beam carrying signal data; (ii) a rotating polygon prism having a substantially transparent body; (iii) a scanning optics situated between said coherent light source and said rotating polygon, said scanning optics comprising at least one scanning reflector and situated (a) to intercept the output beam provided by the coherent light source, (b) to direct the output beam towards the polygon prism, and (c) to scan the output beam across a projection surface;
whereinthe polygon prism is configured to transmit the scanned output beam through its body. - View Dependent Claims (20)
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Specification