Composite optical element

Patent metadata

Field	Value
Publication number	US-10704765-B2
Application number	US-201815966681-A
Country	US
Kind code	B2
Filing date	Apr 30, 2018
Priority date	Apr 30, 2018
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

Systems and methods are provided for forming a composite optical element having a transparent lens carrier and a lens attached to the transparent lens carrier. The lens is formed from liquid silicone rubber. The Young's modulus of the material of the lens carrier is higher than that of liquid silicone rubber. The lens carrier includes a plurality of surface features configured to interface with the transparent lens.

First claim

What is claimed is:

1. A composite optical element for use in a vehicle lighting system, comprising:
a transparent lens carrier formed from a first material having a first Young's modulus; and
a lens attached to the transparent lens carrier, the lens being formed from liquid silicone rubber and having a second Young's modulus less than the first Young's modulus, wherein the transparent lens carrier comprises a plurality of surface features configured to interface with the lens, the surface features comprising capture features embedded within the lens.

2. The composite optical element of claim 1 , wherein the surface features further comprise locating features, and wherein ends of the locating features are configured to attach to a structural support.

3. The composite optical element of claim 1 , wherein the first material is Polycarbonate.

4. The composite optical element of claim 1 , wherein the lens comprises a plurality of optical features, each optical feature being configured to direct light from a respective light source.

5. The composite optical element of claim 4 , wherein the lens carrier comprises a plurality of through-holes, and wherein each one of the plurality of optical features is arranged to protrude through a respective through-hole.

6. A lighting system, the lighting system including:
at least one light source; and
a composite optical element comprising:
a transparent lens carrier formed from a first material having a first Young's modulus; and
a lens attached to the transparent lens carrier, the lens being formed from liquid silicone rubber and having a second Young's modulus less than the first Young's modulus, wherein the transparent lens carrier comprises a plurality of surface features configured to interface with the lens, the surface features comprising capture features embedded within the lens.

7. The lighting system of claim 6 , wherein the surface features further comprise locating features, and wherein ends of the locating features are configured to attach to a structural support.

8. The lighting system of claim 6 , wherein the first material is Polycarbonate.

9. The lighting system of claim 6 , wherein the at least one light source comprises a plurality of light sources, and the lens comprises a plurality of optical features, each optical feature being configured to direct light from a respective light source of the plurality of light sources.

10. The lighting system of claim 9 , wherein the lens carrier comprises a plurality of through-holes, and wherein each one of the plurality of optical features is arranged to protrude through a respective through-hole.

11. A method of forming a composite optical element for use in a vehicle lighting system, the method comprising:
forming a transparent lens carrier from a first material having a first Young's modulus,
forming a plurality of surface features on a surface of the transparent lens carrier, the surface features comprising capture features; and
forming a lens around the plurality of surface features using liquid silicone rubber, such that the capture features are embedded within the lens, the liquid silicone rubber having a second Young's modulus lower than the first Young's modulus of the first material.

12. The method of claim 11 , wherein the first material is Polycarbonate.

13. The method of claim 11 , wherein the step of forming the transparent lens carrier comprises molding the transparent lens carrier.

14. The method of claim 11 , wherein the step of forming the lens comprises over-molding the lens onto the transparent lens carrier.

15. The method of claim 11 , wherein the step of forming the lens comprises co-molding the lens with the transparent lens carrier.

16. The method of claim 11 , wherein the transparent lens carrier and the plurality of surface features are molded simultaneously as one piece.

17. The method of claim 11 , wherein the lens comprises a plurality of optical features, each optical feature being configured to direct light from a respective light source.

18. The method of claim 11 , wherein the lens carrier comprises a plurality of through-holes through which the plurality of optical features protrude.

Assignees

• Honeywell Int Inc

Inventors

• Shellhause Daniel
• Stout Bo
• Stephens Newel

Classifications

• F21V5/007 Primary

  Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008) · CPC title

• B29K2069/00

  Use of PC, i.e. polycarbonates {or derivatives thereof}, as moulding material · CPC title

• B29K2083/005

  LSR, i.e. liquid silicone rubbers, or derivatives thereof · CPC title

• F21Y2105/18

  annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam · CPC title

• F21V17/005

  with keying means, i.e. for enabling the assembling of component parts in distinctive positions, e.g. for preventing wrong mounting · CPC title