Reflection-Safe Receiver for Power Beaming
First Claim
1. A power beam receiver comprising:
- a power conversion element arranged at a non-perpendicular angle to an incident power beam; and
a first baffle arranged to absorb reflections of the incident power beam from the power conversion element.
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Accused Products
Abstract
Embodiments of the invention include a power beam receiver that will not reflect light beyond the regulatory limits for human exposure, except along paths known to be without people. In one embodiment, a baffle is used to trap reflections from surfaces of the receiver. In a second embodiment, the power beam receiver is arranged so that reflections are reflected to another surface of the receiver. These surfaces may be designed as a retroreflector. In a third embodiment, an intentional scattering medium is added to the power beam receiver so that parallel light rays incident on the front surface of the power beam receiver are scattered through a series of angles. As a result, any light escaping the system is diffused.
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Citations
24 Claims
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1. A power beam receiver comprising:
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a power conversion element arranged at a non-perpendicular angle to an incident power beam; and a first baffle arranged to absorb reflections of the incident power beam from the power conversion element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power beam receiver comprising:
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a first power conversion element arranged at a non-perpendicular, non-parallel angle to an incident power beam; and a second power conversion element fixed at a right angle to the first power conversion element, wherein reflections of the incident power beam from the first power conversion element impinge on the second power conversion element.
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10. A power beam receiver comprising:
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a power receiving element arranged to receive an incident power beam; and a retroreflector between a source of the incident power beam and the power receiving element. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A power beam receiver comprising:
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a surface of a first element; and a surface of a second element, wherein the first and second elements are arranged so that light from an incident power beam that originally reflects from the surface of the first element is directed to the surface of the second element, wherein the first and second elements are not substantially reflective. - View Dependent Claims (18, 19, 20)
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21. A power beam receiver comprising:
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a power receiving element arranged to receive an incident power beam; and an intentional dispersion element between a source of the incident power beam and the power receiving element to scatter reflections of the incident power beam. - View Dependent Claims (22, 23, 24)
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Specification