Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 26, 2009
Patent Application Number
11111830
Date Filed
April 22, 2005
Patent Primary Examiner
Patent abstract
A light-emitting apparatus, comprising at least one LED element, and at least one liquid crystal lens disposed to face the LED element and positioned at a distance from the LED element, a focal length of light, broadening and narrowing directions of light, and changing the illuminating area of light being adjustable by applying a voltage to the at least one liquid crystal lens and a light-emitting apparatus, further comprising at least one lens placed on the liquid crystal lens.
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