Light emitting device
AssigneeInnolux Corporation
InventorsYu-Chia Huang, Hong-Sheng Hsieh, Tsung-Han Tsai
Life of this patent
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Abstract
A light emitting device emitting an output light includes an optical structure. A sub light is defined as the output light corresponding to an azimuth angle, a first value L1 is a sum of a luminance of the sub light corresponding to a polar angle from 115 to 125 degrees, a second value L2 is a sum of a luminance of the sub light corresponding to a polar angle from 95 to 105 degrees, a third value L3 is a sum of a luminance of the sub light corresponding to a polar angle from 75 to 85 degrees, a fourth value L4 is a sum of a luminance of the sub light corresponding to a polar angle from 55 to 65 degrees. The first value L1, the second value L2, the third value L3 and the fourth value L4 satisfy L3≠L2, and (L2+L3)>(L1+L4).
Claims15
A light emitting device configured to emit an output light having a distribution of luminance, comprising:
- an optical structure,
- wherein the output light is adjusted by the optical structure, a sub light is defined as the output light corresponding to an azimuth angle, a first value L1 is a sum of a luminance of the sub light corresponding to a polar angle from 115 degrees to 125 degrees, a second value L2 is a sum of a luminance of the sub light corresponding to a polar angle from 95 degrees to 105 degrees, a third value L3 is a sum of a luminance of the sub light corresponding to a polar angle from 75 degrees to 85 degrees, a fourth value L4 is a sum of a luminance of the sub light corresponding to a polar angle from 55 degrees to 65 degrees, and the first value L1, the second value L2, the third value L3 and the fourth value L4 satisfy following relations:
- L
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- (
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- .
Dependencies are inferred from the claim text.