Vehicular lighting assemblies and headlamps with condenser lenses configured to prevent solar damage

Patent metadata

Field	Value
Publication number	US-10267482-B2
Application number	US-201715588013-A
Country	US
Kind code	B2
Filing date	May 5, 2017
Priority date	May 5, 2017
Publication date	Apr 23, 2019
Grant date	Apr 23, 2019

Abstract

A vehicular lighting assembly (and methods of making the same) that includes a parabolic reflector; a condenser lens comprising a non-planar rear surface; an outer lens; a bezel between the lenses; and a light source that emanates light that strikes the reflector and exits the assembly through the condenser lens and the outer lens. Further, the non-planar rear surface of the condenser lens refracts ambient light entering the condenser lens away from the bezel. In embodiments, the non-planar rear surface can comprise a convex or a concave surface.

First claim

What is claimed is:

1. A vehicular lighting assembly, comprising:
a parabolic reflector;
a condenser lens comprising a non-planar rear surface;
an outer lens;
a bezel between the lenses; and
a light source that emanates light that strikes the reflector and exits the assembly through the lenses,
wherein the non-planar rear surface comprises quantum dots with an excitation emission between about 800 and 1000 nm and is configured to reflect ambient light entering the condenser lens away from the bezel.

2. The assembly according to claim 1 , wherein the non-planar rear surface comprises a plurality of optical facets.

3. The assembly according to claim 2 , wherein each of the optical facets comprises a convex rear surface.

4. The assembly according to claim 2 , wherein each of the optical facets comprises a concave rear surface.

5. The assembly according to claim 1 , wherein the condenser lens further comprises an optical silicone layer over the non-planar rear surface.

6. A vehicular lighting assembly, comprising:
a parabolic reflector;
a condenser lens comprising a concave rear surface;
an outer lens;
a bezel between the lenses; and
a light source that emanates light that strikes the reflector and exits the assembly through the lenses,
wherein the concave rear surface comprises quantum dots with an excitation emission between about 800 and 1000 nm and reflects ambient light entering the condenser lens away from the bezel.

7. The assembly according to claim 6 , wherein the concave rear surface comprises a plurality of optical facets.

8. The assembly according to claim 7 , wherein each of the optical facets comprises a convex rear surface.

9. The assembly according to claim 7 , wherein each of the optical facets comprises a concave rear surface.

10. The assembly according to claim 6 , wherein the condenser lens further comprises an optical silicone layer over the concave rear surface.

11. The assembly according to claim 6 , wherein the condenser lens further comprises a plurality of optical silicone layers over the concave rear surface, the silicone layers comprising a plurality of optical facets.

12. A vehicular lighting assembly, comprising:
a parabolic reflector;
a condenser lens comprising a convex rear surface;
an outer lens;
a bezel between the lenses; and
a light source that emanates light that strikes the reflector and exits the assembly through the lenses,
wherein the convex rear surface comprises quantum dots with an excitation emission between about 800 and 1000 nm and reflects ambient light entering the condenser lens away from the bezel.

13. The assembly according to claim 12 , wherein the convex rear surface comprises a plurality of optical facets.

14. The assembly according to claim 13 , wherein each of the optical facets comprises a convex rear surface.

15. The assembly according to claim 13 , wherein each of the optical facets comprises a concave rear surface.

16. The assembly according to claim 12 , wherein the condenser lens further comprises an optical silicone layer over the convex rear surface.

17. The assembly according to claim 12 , wherein the condenser lens further comprises a plurality of optical silicone layers over the convex rear surface, the silicone layers comprising a plurality of optical facets.

Assignees

• Ford Global Tech Llc

Inventors

• Johnson Aaron Bradley
• Teodecki John Matthew
• Dellock Paul Kenneth
• Salter Stuart C

Classifications

• F21V3/08

  the material comprising photoluminescent substances · CPC title

• F21S41/50

  characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers · CPC title

• F21V3/12

  the coatings comprising photoluminescent substances · CPC title

• F21S41/275

  Lens surfaces, e.g. coatings or surface structures · CPC title

• F21K9/64

  using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer · CPC title