Led street light lens
AssigneeDialight Corporation
InventorsChakrakodi Vishnu Shastry, Anthony Verdes
Life of this patent
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Abstract
The present invention is directed to a lens. In one embodiment, the lens includes a first surface, a second surface that bends a light emitted from a light source with the first surface, a third surface that bends the light emitted from the light source with the first surface and a fourth surface coupled to the second surface and the third surface that bends the light emitted from the light source with the first surface. The first surface and the second surface are dioptric. The first surface and the third surface are dioptric. The first surface and the fourth surface are catadioptric.
Claims20
A lens, comprising:
- a first surface;
- a second surface that bends a light emitted from a light source with the first surface;
- a third surface that bends the light emitted from the light source with the first surface;
- and
- a fourth surface coupled to the second surface and the third surface that bends the light emitted from the light source with the first surface,
- wherein the first surface and the second surface are dioptric, the first surface and the third surface are dioptric and the first surface and the fourth surface are catadioptric.
A light emitting diode (LED) street light lens assembly, comprising:
- an LED;
- a lens coupled to the LED that changes a circular light output from the LED into a substantially rectangular light output;
- and
- a reflector coupled to the lens to form an asymmetrical substantially rectangular light output from the substantially rectangular light output.
A method for forming an asymmetrical substantially rectangular light output, comprising:
- receiving a light emitted from a light source, wherein a first portion of the light is refracted twice by a first surface and a second surface of a lens, a second portion of the light is refracted twice by the first surface and a third surface of the lens and a third portion of the light is refracted twice and totally internally reflected by the first surface and a fourth surface of the lens;
- outputting the light source in a substantially rectangular pattern;
- and
- reflecting a portion of the light source in the substantially rectangular pattern to form the asymmetrical substantially rectangular light output.
Dependencies are inferred from the claim text.