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Electrically controlled glass in a lamp

  • US 8,820,981 B2
  • Filed: 07/19/2010
  • Issued: 09/02/2014
  • Est. Priority Date: 07/19/2010
  • Status: Expired due to Fees
First Claim
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1. A lighting apparatus comprising:

  • a light source;

    a first reflector having a first reflection pattern of light from the light source;

    a second reflector having a second reflection pattern interposed between the light source and the first reflector, the second reflector comprising smart glass having a reflectivity state;

    electrical circuitry configured to control the reflectivity state of the smart glass;

    an enclosure, substantially the same size and shape as a typical incandescent light bulb, and at least partially surrounding the light source and the electrical circuitry; and

    an electrical connection for receiving power, the electrical connection comprising an Edison screw fitting base;

    wherein if the reflectivity state of the smart glass of the second reflector is substantially transparent, the lighting apparatus is configured to allow the light from the light source to pass through the second reflector and be reflected in the form of the first reflection pattern with the first reflector; and

    wherein if the reflectivity state of the smart glass of the second reflector is substantially reflective, the lighting apparatus is configured to substantially block light from the light source from reaching the first reflector and reflect the light from the light source in the form of the second reflection pattern with the second reflector.

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