Vehicular signal and daytime running light assemblies with uniform illumination

Patent metadata

Field	Value
Publication number	US-9810394-B2
Application number	US-201514940994-A
Country	US
Kind code	B2
Filing date	Nov 13, 2015
Priority date	Nov 13, 2015
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

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 lenses and an outer lens comprising optical elements,
the chambers non-linearly shaped with at least one right angle having a sharp corner, and
the substrate comprises at least four LED sources, each emanating light through the corresponding Fresnel lens and optical elements 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 optical elements spread the light pattern into a non-circular or an asymmetric shape.

4. The assembly according to claim 1 , wherein each LED source emanates the light directly through the corresponding Fresnel lens and at least one adjacent 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. 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 lenses and an outer lens comprising optical elements,
the chambers non-linearly shaped with at least one right angle having a sharp corner, and
the substrate comprises at least four LED sources emanating light through the chambers into a daytime running light pattern with a contrast ratio of 3:1 or less.

7. The assembly according to claim 6 , wherein the daytime running light pattern has a contrast ratio of 1.5:1 or less.

8. The assembly according to claim 6 , wherein the optical elements spread the light into a non-circular or an asymmetric shape.

9. The assembly according to claim 6 , wherein each LED source emanates the light directly through the corresponding Fresnel lens and at least one adjacent Fresnel lens.

10. The assembly according to claim 6 , wherein the corresponding Fresnel lenses are configured within a single Fresnel lens substrate spaced apart from the substrate comprising the LED sources.

11. A vehicular signal assembly, comprising:
an inner chamber defined by at least 40 LED light sources and spaced apart, corresponding Fresnel lenses; and
an outer chamber defined by the Fresnel lenses and an outer lens having a width of at least 30 mm,
wherein each LED source emanates incident light directly through the corresponding Fresnel lens and outer lens to produce a daytime running light pattern with a contrast ratio of 3:1 or less,
wherein the inner and outer chambers are arranged in a C-shape that contains at least one right angle having a sharp corner.

12. The assembly according to claim 11 , wherein the daytime running light pattern has a contrast ratio of 1.5:1 or less.

13. The assembly according to claim 11 , wherein each LED source emanates incident light directly through the corresponding Fresnel lens and at least one adjacent Fresnel lens.

14. The assembly according to claim 11 , wherein the outer lens has a width of at least 30 mm.

Assignees

• Ford Global Tech Llc

Inventors

• Henige Gary Edward
• Clement Chad
• Ramasami Udayakumar

Classifications

• F21Y2101/02

  Mechanical Engineering · mapped topic

• F21S48/215

  Mechanical Engineering · mapped topic

• F21S48/2212 Primary

  Mechanical Engineering · mapped topic

• G02B3/08

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

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title