Title:
LIGHT-POWERED TRANSMITTER ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2011/156620
Kind Code:
A4
Abstract:
Disclosed is a fight-powered transmitter assembly for transmitting a wireless signal relating to received light. The assembly comprises a photovoltaic device and an energy storage device connected to the photovoltaic device for receiving charge from the photovoltaic device. A threshold charge-sensing circuit connects to the energy storage device for making a determination whenever the charge of the energy storage device reaches a threshold level. A transmitting circuit, responsive to the threshold charge-sensing circuit, transmits a wireless signal that is indicative of the energy storage device having reached the threshold level of charge and that uniquely identifies the wireless signal as coming from the light-powered transmitter assembly. The transmitting circuit is at least partially powered from energy received from the energy storage device. An interval between two successive ones of the determinations is a function of average intensity of light received by the photovoltaic device.
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Inventors:
BUELOW ROGER F II (US)
Application Number:
PCT/US2011/039833
Publication Date:
March 22, 2012
Filing Date:
June 09, 2011
Export Citation:
Assignee:
ENERGY FOCUS INC (US)
BUELOW ROGER F II (US)
BUELOW ROGER F II (US)
International Classes:
H05B37/02
Attorney, Agent or Firm:
BRUZGA, Charles, E. (11 Broadway Suite 71, New York NY, US)
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