Silicone optics

Patent metadata

Field	Value
Publication number	US-10807329-B2
Application number	US-201414275177-A
Country	US
Kind code	B2
Filing date	May 12, 2014
Priority date	May 10, 2013
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

Silicone-containing light fixture optics. A method for manufacturing an optical component may include mixing two precursors of silicone, opening a first gate of an optic forming device, moving the silicone mixture from the extrusion machine into the optic forming device, cooling the silicone mixture as it enters the optic forming device, filling a mold within the optic forming device with the silicone mixture, closing the first gate, and heating the silicone mixture in the mold to at least partially cure the silicone. Alternatively, a method for manufacturing an optical component may include depositing a layer of heat cured silicone optical material to an optical structure, arranging one or more at least partially cured silicone optics on the layer of heat cured silicone optical material, and heating the heat cured silicone optical material to permanently adhere the one or more at least partially cured silicone optics to the optical structure.

First claim

What is claimed is:

1. A method for manufacturing a light fixture comprising an artificial light source and an optical component configured to direct light emitted from the artificial light source, the method comprising:
manufacturing the optical component by:
providing a glass optical structure;
providing a pre-formed silicone optic in an only partially cured state;
providing a layer of a silicone optical material between the silicone optic in the only partially cured state, and the glass optical structure, such that the layer of the silicone optical material is interposed between and directly attaches to both the silicone optic in an only partially cured state and the glass optical structure, wherein the silicone optical material is uncured when provided;
then curing the layer of the silicone optical material to adhere the silicone optic to the glass optical structure; and

positioning the optical component within the light fixture such that the silicone optic is located between the glass optical structure and the artificial light source such that light emitted from the artificial light source is directed into and passes through the silicone optic prior to passing through the glass optical structure.

2. The method of claim 1 , further comprising arranging a separate reflector adjacent to the artificial light source such that the separate reflector extends toward the silicone optic such that the separate reflector and the silicone optic are detached from one another.

3. The method of claim 2 , wherein the separate reflector and the silicone optic are separated by a distance from one another.

4. The method of claim 1 , wherein the layer of the silicone optical material comprises a room temperature vulcanizing silicone or a liquid silicone rubber.

5. The method of claim 1 , wherein an interface between the glass optical structure and the silicone optic comprises a substantially planar interstitial interface that contains no free air between the glass optical structure and the silicone optic.

6. The method of claim 1 , wherein the silicone optic comprises a cross-sectional shape comprising a portion having a circular protrusion with a constant radius.

7. The method of claim 6 , further comprising:
positioning the silicone optic such that the circular protrusion extends away from the glass optical structure.

8. The method of claim 1 , wherein the silicone optic comprises a cross-sectional shape comprising a plurality of wedge-shaped protrusions, and wherein the method further comprises positioning the silicone optic such that the plurality of wedge-shaped protrusions extend away from the glass optical structure.

9. The method of claim 8 , wherein the plurality of wedge-shaped protrusions have varying heights such that the heights decrease when moving toward a center of a width of the silicone optic, and wherein low points are defined as points of minimum distance, on a surface of the silicone optic, from the glass optical structure between any two adjacent ones of the wedge-shaped protrusions, and all such low points are approximately equidistant from the glass optical structure.

10. The method of claim 8 , wherein:
the cross-sectional shape further comprises a portion having a circular protrusion;
the plurality of wedge-shaped protrusions are arranged symmetrically about the circular protrusion; and
the circular protrusion has a constant radius.

11. The method of claim 1 , wherein the artificial light source is positioned on a substantially planar portion of an upper surface of a heat sink.

12. The method of claim 11 , further comprising positioning the surface of the glass optical structure a distance from the substantially planar portion of the upper surface of the heat sink.

13. The method of claim 12 , wherein the distance is approximately 1 inch.

14. The method of claim 12 , further comprising positioning a separate reflector on the upper surface of the heat sink.

15. The method of claim 1 , wherein curing comprises thermal curing in at least one of (i) a curing oven and (ii) a continuous kiln with a conveyor belt.

16. The method of claim 1 , wherein providing a silicone optic in an only partially cured state comprises partially curing the silicone optic in an optic forming device.

17. The method of claim 16 , wherein the optic forming device comprises an extruder.

18. The method of claim 16 , wherein the optic forming device comprises a mold.

19. The method of claim 1 , wherein the silicone optical material comprises a liquid when provided.

20. A method for manufacturing a light fixture comprising:
arranging an artificial light source on a base surface;
manufacturing an optical component by:
providing a glass optical structure;
pre-forming a silicone optic by only partially curing the silicone optic in an optic forming device such that the silicone optic is in an only partially cured state;
providing a layer of a silicone optical material between the silicone optic in the only partially cured state, and the glass optical structure, such that the layer of the silicone optical material is interposed between and directly attaches to both the silicone optic in an only partially cured state and the glass optical structure, wherein the silicone optical material is uncured when provided;
then curing the layer of the silicone optical material to adhere the silicone optic to the glass optical structure; and

mounting the optical component adjacent to the artificial light source such that the silicone optic faces the artificial light source such that light emitted from the artificial light source is directed into and passes through the silicone optic prior to passing through the glass optical structure.

21. The method of claim 20 , further comprising mounting a separate reflector adjacent to the artificial light source such that the separate reflector extends toward the silicone optic such that the separate reflector and the silicone optic are detached from one another, wherein the separate reflector is attached to the base surface.

22. The method of claim 20 , wherein the layer of the silicone optical material comprises a room temperature vulcanizing silicone or a liquid silicone rubber.

23. The method of claim 20 , wherein an interface between the glass optical structure and the silicone optic comprises a substantially planar interstitial interface that contains no free air between the glass optical structure and the silicone optic.

24. The method of claim 20 , wherein the silicone optic comprises a cross-sectional shape comprising a portion having a circular protrusion with a constant radius.

25. The method of claim 24 , wherein the circular protrusion is centrally located on the silicone optic and wherein the method further comprises arranging the silicone optic such that the circular protrusion extends away from the glass optical structure.

26. The method of claim 20 , wherein the silicone optic comprises a cross-sectional shape comprising a plurality of wedge-shaped protrusions and wherein the method further comprises arranging the silicone optic such that the plurality of wedge-shaped protrusions extend away from the glass optical structure.

27. The method of claim 26 , wherein the plurality of wedge-shaped protrusions have varying heights such that the heights decrease when moving toward a center of a width of the silicone optic, and wherein low points are defi

Assignees

• Abl Ip Holding Llc

Inventors

• Marquardt Craig Eugene
• Mccanless Forrest Starnes
• Chen Jie
• Harvey John Bryan
• Wu Yinan
• Weiss Daniel Aaron

Classifications

• G02B27/0966

  Cylindrical lenses (cylindrical lenses per se G02B3/06) · CPC title

• G02B19/0066

  in the form of an LED array · CPC title

• G02B19/0028

  refractive and reflective surfaces, e.g. non-imaging catadioptric systems · CPC title

• G02B3/06

  with cylindrical or toric faces · CPC title

• F21S4/28

  rigid, e.g. LED bars · CPC title