Lens to produce high angle off-axis light with wide beam width
AssigneeDialight Corporation
InventorQi Hong
Life of this patent
Estimating the term…
Abstract
The present disclosure is directed to examples of an apparatus. In one embodiment, the apparatus includes a light entry segment that receives light emitted from a light emitting diode (LED), a total internal reflection (TIR) segment to reflect the light emitted from the light emitting diode towards an optical axis of the LED, and a light redirection segment to redirect the light emitted from the light emitting diode and the light reflected by the TIR segment at an angle greater than 45 degrees relative to the optical axis of the LED and greater than 90 degrees along a horizontal axis.
Claims19
An apparatus, comprising:
- a light entry segment that receives light emitted by a light emitting diode (LED);
- a total internal reflection (TIR) segment to reflect the light emitted by the light emitting diode towards an optical axis of the LED;
- a light redirection segment to redirect the light emitted by the light emitting diode and the light reflected by the TIR segment at an angle greater than 45 degrees relative to the optical axis of the LED and greater than 90 degrees along a horizontal axis in a batwing shape;
- and
- a substrate located between the TIR segment and the light redirection segment, wherein a groove is formed below a top surface of the substrate and in front of an outer side of the light redirection segment.
An apparatus, comprising:
- a substrate;
- a total internal reflection (TIR) lens formed below the substrate and around a light emitting diode (LED);
- and
- a light redirection segment formed in the substrate, wherein a bottom of the light redirection segment is below a top surface of the substrate, wherein the light redirection segment comprises:
- a TIR surface;
- and
- a light exiting surface.
A luminaire, comprising:
- at least one light emitting diode (LED) to emit light;
- and
- a lens to redirect the light emitted by the at least one LED at an angle greater than 45 degrees relative to an optical axis of the LED and greater than 90 degrees along a horizontal axis, the lens comprising:
- a substrate;
- a total internal reflection (TIR) lens formed below the substrate and around the at least one LED;
- and
- a light redirection segment formed in the substrate, wherein a bottom of the light redirection segment is below a top surface of the substrate, wherein the light redirection segment comprises:
- a TIR surface;
- and
- a light exiting surface.
Dependencies are inferred from the claim text.