LED light fixture with light shaping features
First Claim
Patent Images
1. A light fixture, comprising:
- a LED assembly comprising a linear LED array emitting light when energized through an electrical path;
a lens having an first surface and a second surface, the lens covering the LED array for receiving the emitted light at the first surface and emitting light from the second surface, the lens comprising a plurality of light shaping features on at least one of the first surface and the second surface, the plurality of light shaping features configured to generate a directional light distribution pattern wherein the light pattern is asymmetric relative to a longitudinal axis of the light fixture.
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Abstract
A light fixture has a linear LED array and a lens having a first surface and a second surface that covers the LED array. The light being received at the first surface and emitted from the second surface. The lens includes a plurality of light shaping features on at least one of the first surface and the second surface where the plurality of light shaping features are configured to generate a directional light distribution pattern. The light pattern may be symmetric or asymmetric relative to a longitudinal axis of the light fixture. The lens may comprise a plurality of sections where the plurality of sections made of material having different optical properties.
26 Citations
25 Claims
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1. A light fixture, comprising:
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a LED assembly comprising a linear LED array emitting light when energized through an electrical path; a lens having an first surface and a second surface, the lens covering the LED array for receiving the emitted light at the first surface and emitting light from the second surface, the lens comprising a plurality of light shaping features on at least one of the first surface and the second surface, the plurality of light shaping features configured to generate a directional light distribution pattern wherein the light pattern is asymmetric relative to a longitudinal axis of the light fixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A light fixture, comprising:
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a housing; a LED assembly comprising a linear LED array supported by the housing, the LED array emitting light when energized through an electrical path; a lens having an entry surface and an exit surface, the lens covering the LED array for receiving the emitted light at the entry surface and emitting light from the exit surface, the lens comprising a plurality of prismatic elements on at least one of the entry surface and the exit surface, the plurality of prismatic elements configured to generate a directional light distribution pattern and a diffusive layer is on at least one of the entry surface and the exit surface. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A light fixture, comprising:
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a LED assembly comprising a linear LED array emitting light when energized through an electrical path; a lens having an first surface and a second surface, the lens covering the LED array for receiving the emitted light at the first surface and emitting light from the second surface, the lens comprising a plurality of light shaping features on at least one of the first surface and the second surface, the plurality of light shaping features configured to generate a directional light distribution pattern wherein at least one half of the first surface is formed as a Fresnel prism comprising a plurality of first prismatic features and at least one half of the second surface is formed as a Fresnel prism comprising a plurality of second prismatic features wherein the at least one half of the first surface is offset with respect to the at least one half of the second surface.
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23. A light fixture, comprising:
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a housing; a LED assembly comprising a linear LED array supported by the housing, the LED array emitting light when energized through an electrical path; a lens having an entry surface and an exit surface, the lens having one of a square and a rectangular cross-section, the lens covering the LED array for receiving the emitted light at the entry surface and emitting light from the exit surface; and a reflector located inside of the lens and extending along the linear LED array positioned to reflect at least a portion of the light to produce an asymmetric light pattern. - View Dependent Claims (24, 25)
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Specification