High efficiency light source using solid-state emitter and down-conversion material
First Claim
1. A light emitting apparatus comprising:
- a source of light for emitting light;
a down conversion material receiving the emitted light and converting the emitted light into transmitted light and backward transmitted light; and
an optic device, having a first end proximal the radiation source and a second end distal the radiation source, the proximal end of the optic device having a width smaller that a width of the distal end, disposed between the source of light and the down conversion material, having at least one transparent side wall absent the down conversion material, configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device through the at least one transparent side wall.
2 Assignments
0 Petitions
Accused Products
Abstract
A light emitting apparatus includes a source of light for emitting light; a down conversion material receiving the emitted light, and converting the emitted light into transmitted light and backward transmitted light; and an optic device configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device. The source of light is a semiconductor light emitting diode, a laser diode (LD), or a resonant cavity light emitting diode (RCLED). The down conversion material includes one of phosphor or other material for absorbing light in one spectral region and emitting light in another spectral region. The optic device, or lens, includes light transmissive material.
-
Citations
40 Claims
-
1. A light emitting apparatus comprising:
-
a source of light for emitting light; a down conversion material receiving the emitted light and converting the emitted light into transmitted light and backward transmitted light; and an optic device, having a first end proximal the radiation source and a second end distal the radiation source, the proximal end of the optic device having a width smaller that a width of the distal end, disposed between the source of light and the down conversion material, having at least one transparent side wall absent the down conversion material, configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device through the at least one transparent side wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A light emitting apparatus comprising:
-
a light transmissive cylindrical optic comprising at least two separate segments, each of the separate segments having a planar surface adjacent each other; at least one light radiation source disposed adjacent an end of each of the at least two segments of the cylindrical optic; and a down conversion material, disposed along a central longitudinal axis within the cylindrical optic, for at least one of transmitting or reflecting light transmitted by the light radiation source, the down conversion material adapted to allow passage of light from one segment into another segment of the cylindrical optic. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 37, 38)
-
-
34. A light emitting apparatus comprising:
-
a source of light for emitting light; a down conversion material receiving the emitted light and converting the emitted light into transmitted light and backward transmitted light; and an optic device, having a first end proximal the radiation source and a second end distal the radiation source, the proximal end of the optic device having a width smaller that a width of the distal end, disposed between the source of light and the down conversion material, having at least one transparent side wall absent the down conversion material, configured to receive the backward transmitted light and transfer substantially all of the backward transmitted light outside of the optic device through the at least one transparent side wall. - View Dependent Claims (35)
-
-
36. A light emitting apparatus comprising:
-
a source of light for emitting light; a down conversion material receiving the emitted light and converting the emitted light into transmitted light and backward transmitted light; and an optic device, having a first end proximal the radiation source and a second end distal the radiation source, the proximal end of the optic device having a width smaller that a width of the distal end, disposed between the source of light and the down conversion material, having at least one transparent side wall, configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device between the source of light and the down conversion material through the at least one transparent side wall without passing through the down conversion material.
-
-
39. A light emitting apparatus comprising:
-
a light transmissive cylindrical optic comprising at least two separate segments, each of the separate segments having a planar surface adjacent each other; at least one light radiation source disposed adjacent an end of the cylindrical optic; and a down conversion material, disposed along a central longitudinal axis within the cylindrical optic, for at least one of transmitting or reflecting light transmitted by the light radiation source, wherein a first segment of the at least two separate segments of the cylindrical optic has a first surface, a second segment of the at least two separate segments of the cylindrical optic has a second surface, and the down conversion material is disposed between the first surface and the second surface. - View Dependent Claims (40)
-
Specification