Vehicular signal and daytime running light assemblies with uniform illumination

Patent metadata

Field	Value
Publication number	US-9970623-B2
Application number	US-201715708483-A
Country	US
Kind code	B2
Filing date	Sep 19, 2017
Priority date	Nov 13, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A vehicular signal assembly that includes an inner chamber defined by a substrate comprising LED light sources and spaced apart, corresponding Fresnel lenses; and an outer chamber defined by the Fresnel lenses and an outer lens comprising optical elements. The outer lens can have a width of at least 12 mm. Further, each LED source emanates incident light directly through the chambers to produce a light pattern with a contrast ratio of 3:1 or less, e.g., a daytime running light pattern. Each LED source can also emanate incident light directly through the corresponding Fresnel lens an outer lens to produce the daytime running light pattern.

First claim

What is claimed is:

1. A vehicular signal assembly, comprising:
an inner chamber defined by a substrate and spaced apart, corresponding Fresnel lenses; and
an outer chamber defined by the Fresnel lenses and an outer lens,
the chambers non-linearly shaped and comprise at least one right angle having a sharp corner, and
the substrate comprises a plurality of LED sources emanating light through the chambers into a light pattern with a contrast ratio of 3:1 or less.

2. The assembly according to claim 1 , wherein the light pattern is characterized by a contrast ratio of 1.5:1 or less.

3. The assembly according to claim 1 , wherein the outer lens comprises a plurality of optical elements that spread the light pattern into a non-circular or an asymmetric shape.

4. The assembly according to claim 1 , wherein each LED source is positioned to be within a focal length of the corresponding Fresnel lens.

5. The assembly according to claim 1 , wherein the corresponding Fresnel lenses are configured within a single Fresnel lens substrate spaced apart from the substrate comprising the LED sources.

6. The assembly according to claim 1 , wherein each LED source comprises a beam angle less than an angle formed between each LED source and an outermost portion of the corresponding Fresnel lens.

7. A vehicular signal assembly, comprising:
an inner chamber defined by a substrate and spaced apart, corresponding Fresnel lenses; and
an outer chamber defined by the Fresnel lenses and an outer lens,
the chambers having a substantially open construction and comprise at least one right angle having a sharp corner, and
the substrate comprises a plurality of LED sources emanating light through the chambers into a light pattern, each LED source emanating light through the corresponding lens and at least one adjacent lens.

8. The assembly according to claim 7 , wherein the light pattern is characterized by a contrast ratio of 1.5:1 or less.

9. The assembly according to claim 7 , wherein the outer lens comprises a plurality of optical elements that spread the light in into a non-circular or an asymmetric shape.

10. The assembly according to claim 7 , wherein each LED source is positioned to be within a focal length of the corresponding Fresnel lens.

11. The assembly according to claim 7 , wherein the corresponding Fresnel lenses are configured within a single Fresnel lens substrate spaced apart from the substrate comprising the LED sources.

12. The assembly according to claim 7 , wherein each LED source comprises a beam angle less than an angle formed between each LED source and an outermost portion of the corresponding Fresnel lens.

13. A vehicular signal assembly, comprising:
an inner chamber defined by a substrate and spaced apart, corresponding Fresnel lenses; and
an outer chamber defined by the Fresnel lenses and an outer lens,
the chambers non-linearly shaped with a substantially open construction and comprise at least one right angle having a sharp corner, and
the substrate comprises a plurality of LED sources emanating light through the chambers into a light pattern, each LED source emanating light through the corresponding lens and at least one adjacent lens.

14. The assembly according to claim 13 , wherein the outer lens comprises a plurality of optical elements that spread the light in into a non-circular or an asymmetric shape.

15. The assembly according to claim 13 , wherein each LED source is positioned to be within a focal length of the corresponding Fresnel lens.

16. The assembly according to claim 13 , wherein the corresponding Fresnel lenses are configured within a single Fresnel lens substrate spaced apart from the substrate comprising the LED sources.

17. The assembly according to claim 13 , wherein each LED source comprises a beam angle less than an angle formed between each LED source and an outermost portion of the corresponding Fresnel lens.

Assignees

• Ford Global Tech Llc

Inventors

• Henige Gary Edward
• Clement Chad
• Ramasami Udayakumar

Classifications

• G02B3/08

  with discontinuous faces, e.g. Fresnel lens {(diffractive Fresnel lenses G02B5/1876)} · CPC title

• F21Y2101/00

  Point-like light sources · CPC title

• F21S48/215

  Mechanical Engineering · mapped topic

• F21S48/2212 Primary

  Mechanical Engineering · mapped topic

• F21W2107/10

  for land vehicles · CPC title