US Patent 7538830 Light-emitting apparatus
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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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US Patent 07538830 Light-emitting apparatus US Patent 7538830 Light-emitting apparatus
Infobox
Patent Number
0753883000
Patent Number
753883000
Edits on 26 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
075388300
Date of Patent
May 26, 2009
0Patent Application Number
111118300
Date Filed
April 22, 2005
0Official Website
Patent Primary Examiner
Edits on 28 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
075388300
Date of Patent
May 26, 2009
0Patent Application Number
111118300
Date Filed
April 22, 2005
0Official Website
Patent Primary Examiner
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Golden AI
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US Patent 07538830 Light-emitting apparatus
Infobox
Is a
Patent jurisdiction
Patent number
07538830
Date of patent
May 26, 2009
Patent application number
11111830
Date Filed
April 22, 2005
Patent primary examiner
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