IP Library Granted Patent US 10,851,952
Granted Patent B2
US 10,851,952 · App. 16/272,191 · Granted Dec 1, 2020

Reflective ink lighting assembly

Inventors: Jonathan Scoville (Hudsonville, MI); Les Sullivan (Wyoming, MI)
Assignee: Flex-N-Gate Advanced Product Development, LLC
F21K9/68B60Q1/302C09D11/03F21V7/0091F21V7/05F21V7/28G09F13/18G09F2013/044G09F2013/049G09F2013/222G09F2013/227
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Quick Facts
Patent No.
US 10,851,952
App. No.
16/272,191
Granted
Dec 1, 2020
Kind
B2
Abstract

A reflective-ink lighting assembly includes a light transferring medium, a reflective-ink marking in the light transferring medium, and a light source adapted to insert light into the light transferring medium. In a lit state, light from the light source propagates through the light transferring medium by total-internal reflection. As propagated light reflects off the reflective-ink marking, some light exits through a façade of the light transferring medium to produce an illuminated marking. In an unlit state, the reflective-ink marking remains visible due to ambient light reflecting off the reflective-ink marking.

Claims (31)

1. A reflective-ink lighting assembly, comprising:

a light transferring medium;

a reflective-ink marking provided on the light transferring medium;

a light source adapted to insert light into the light transferring medium in a lit state, such that the light propagates through the light transferring medium by total-internal reflection to illuminate the reflective-ink marking;

in an unlit state, the reflective-ink lighting assembly is configured such that the reflective-ink marking remains visible in the presence of ambient light; and

in the lit state, rays of light reflect off of the reflective-ink marking and out of a façade of the light transferring medium so that the reflective-ink marking is visible in the absence of ambient light.

2. The reflective-ink lighting assembly of claim 1 , wherein the reflective-ink marking is applied via pad printing.

3. The reflective-ink lighting assembly of claim 1 , wherein the reflective-ink marking is applied on an inner far side of the light transferring medium opposite a desired direction of light propagation.

4. The reflective-ink lighting assembly of claim 1 , wherein the light source introduces light into the light transferring medium along an edge of the light transferring medium.

5. The reflective-ink lighting assembly of claim 1 , wherein the light source includes one or more light-emitting diodes.

6. The reflective-ink lighting assembly of claim 1 , wherein the light source includes an array of light-emitting diodes.

7. The reflective-ink lighting assembly of claim 1 , wherein ambient light enters the lighting assembly via transparent or semi-transparent portions of the reflective-ink lighting assembly and reflects off the reflective-ink marking making it externally visible through the façade.

8. The reflective-ink lighting assembly of claim 1 , wherein a beam pattern resulting from illumination in the lit state provides an intensity, a size, and a shape that meets legal automotive signal lamp photometric requirements.

9. The reflective-ink lighting assembly of claim 1 , further comprising reflective ink printed on non-essential exit faces of a lighting assembly to increase a total amount of usable light by reflecting light back into the light transferring medium thereby increasing a light efficiency of the lighting assembly.

10. The reflective-ink lighting assembly of claim 1 , wherein the reflective-ink marking further comprises an image set provided on the light transferring medium.

11. The reflective-ink lighting assembly of claim 10 , wherein the image set is provided on a plurality of light transferring media layered upon one another to form a stackup of images.

12. The reflective-ink lighting assembly of claim 10 , wherein the image set glows substantially homogenously when illuminated in the lit state.

13. The reflective-ink lighting assembly of claim 10 , wherein the light source comprises colored light-emitting diodes providing a plurality of colors and the markings include color-matched inks to enable separate portions of the image set to be illuminated via the colored light-emitting diodes.

14. A lighting assembly, comprising:

a reflective-ink marking printed on an inner side of a light transferring medium;

a light source adapted to propagate light through the light transferring medium, wherein propagated light reflects off the reflective-ink marking and exits through a façade of the light transferring medium; and

wherein, in a lit state, rays of light are frustrated out of a façade of the light transferring medium by reflecting off of the reflective-ink marking so that the reflective-ink marking glows substantially homogenously in the absence of ambient light.

15. The lighting assembly of claim 14 , wherein the inner side on which the reflective-ink marking is printed is opposite the façade of the light transferring medium.

16. The lighting assembly of claim 14 , further comprising a lit state when the light source is on and an unlit state when the light source is off, the reflective-ink marking being illuminated in the lit state via the light source and in the unlit state via ambient light.

17. The lighting assembly of claim 14 , wherein the reflective-ink marking includes an image set printed on one or more layers of the light transferring medium arranged in a stackup.

18. The lighting assembly of claim 14 , wherein the reflective-ink marking provides an opaque appearance due to a dense application of ink in the marking.

19. The lighting assembly of claim 14 , wherein the reflective-ink marking provides a translucent appearance due to a light application of ink in the marking.

20. A lighting assembly having a light transferring medium and a reflective-ink marking provided on the light transferring medium, the lighting assembly comprising:

a light source adapted to insert light into the light transferring medium in a lit state, such that the light propagates through the light transferring medium by total-internal reflection to illuminate the reflective-ink marking;

the reflective-ink lighting assembly is configured such that, in an unlit state, ambient light enters the lighting assembly via transparent or semi-transparent portions of the reflective-ink lighting assembly and reflects off the reflective-ink marking making it externally visible through the façade; and

reflective ink is disposed on portions of the lighting assembly so that a total amount of usable light is increased by reflecting light back into the light transferring medium, thereby increasing a light efficiency of the lighting assembly.

Assignments (3)
SECOND AMENDED AND RESTATED PATENT AND TRADEMARK SECURITY AGREEMENT Recorded Aug 12, 2024
From: FLEX-N-GATE LLC, (F/K/A FLEX-N-GATE CORPORATION); FLEX-N-GATE ADVANCED PRODUCT DEVELOPMENT, LLC
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 068539/0865 →
AMENDED AND RESTATED PATENT AND TRADEMARK SECURITY AGREEMENT Recorded Nov 8, 2019
From: FLEX-N-GATE LLC (F/K/A FLEX-N-GATE CORPORATION); FLEX-N-GATE ADVANCED PRODUCT DEVELOPMENT, LLC
To: BANK OF AMERICA, N.A., AS ADMINSTRATIVE AGENT
Reel/Frame 050969/0269 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 11, 2019
From: SCOVILLE, JONATHAN; SULLIVAN, LES
To: FLEX-N-GATE ADVANCED PRODUCT DEVELOPMENT, LLC
Reel/Frame 048293/0343 →
Continuity (2)
Provisional Application 62630934 · Feb 15, 2018
Related Publication 20190249834A1 · Aug 15, 2019