SINGLE WAVELENGTH LIGHT SOURCE FOR USE IN LIGHT BASED POSITIONING SYSTEM
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United States of America Patent
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Issued Date -
Jan 31, 2013
app pub date -
Apr 12, 2012
filing date -
Jul 26, 2011
priority date (Note) -
Abandoned
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Abstract
In one aspect, the present disclosure relates to a self identifying single wavelength light source including an emitter that produces a single wavelength of visible light; and an autonomous modulator in electrical communication with the emitter that automatically and continually modulates the single wavelength of visible light produced by the emitter, wherein the modulated single wavelength of visible light represents an identification code of the light source. In some embodiments, the emitter is a light emitting diode (LED) and further includes an LED driver that provides a specified voltage and current to each LED in the light source. In some embodiments, the emitter can be a blue light emitting diode (LED).
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