Method and system for managing light from a light emitting diode
First Claim
1. An optic comprising:
- an outer surface;
a cavity sized to receive light from a light emitting diode mounted adjacent the cavity; and
an inner surface that forms the cavity and that comprises;
a first refractive surface that bulges into the cavity to receive light from the light emitting diode and form a first beam of light; and
a second refractive surface that is adjacent the first refractive surface and that bulges into the cavity to receive light from the light emitting diode and form a second beam of light.
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0 Petitions
Accused Products
Abstract
A light source, for example a light emitting diode, can emit light and have an associated optical axis. The source can be deployed in applications where it is desirable to have illumination biased laterally relative to the optical axis, such as in a street luminaire where directing light towards a street is beneficial. The source can be coupled to an optic that comprises an inner surface facing the source and an outer surface that is opposite the inner surface. The inner surface can comprise a refractive surface that receives light headed away from the optical axis of the light source, for example opposite the street. The refractive surface can form the received light into a beam. The outer surface of the optic can reflect the beam back across the optical axis, for example so that light headed away from the street is redirected towards the street.
171 Citations
20 Claims
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1. An optic comprising:
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an outer surface; a cavity sized to receive light from a light emitting diode mounted adjacent the cavity; and an inner surface that forms the cavity and that comprises; a first refractive surface that bulges into the cavity to receive light from the light emitting diode and form a first beam of light; and a second refractive surface that is adjacent the first refractive surface and that bulges into the cavity to receive light from the light emitting diode and form a second beam of light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An optic comprising:
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an inner surface that forms a cavity in the optic and that comprises a plurality of refractive surfaces configured to produce a corresponding plurality of beams of light; and an outer surface that comprises a plurality of totally internally reflective surfaces, each totally internally reflective surface oriented to receive a respective one of the plurality of beams of light. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An optic comprising:
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a backside; a cavity that is formed in the backside with an associated inner surface, the cavity sized to receive light from a light emitting diode mounted adjacent the backside and having an optical axis disposed in a reference plane; and an outer surface that comprises; a first region disposed on a first side of the reference plane; and a second region, disposed on a second side of the reference plane, comprising; a first protrusion comprising a first internally reflective surface that is oriented to reflect a first portion of the received light passing through the associated inner surface and incident on the first internally reflective surface, so that the reflected first portion of the received light transmits out of the optic through the second region of the outer surface and through the reference plane; and a second protrusion comprising a second internally reflective surface that is oriented to reflect a second portion of the received light passing through the associated inner surface and incident on the second internally reflective surface, so that the reflected second portion of the received light transmits out of the optic through the second region of the outer surface and through the reference plane. - View Dependent Claims (18, 19, 20)
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Specification