Anti-glare panels

Patent metadata

Field	Value
Publication number	US-10527759-B2
Application number	US-201615131837-A
Country	US
Kind code	B2
Filing date	Apr 18, 2016
Priority date	Apr 18, 2016
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

An anti-glare panel includes a panel with a length and a plurality of alternating black color and non-black color strips extending along the length of the panel. A plurality of lenticular lenses extend along the length of the panel and over the plurality of alternating black color strips and non-black color strips. A single lenticular lens array extends over a pair of a black color strip and a non-black color strip. The plurality of lenticular lenses reflect light from the black color strips within a veiling glare range and reflect light from the non-black color strips outside of the veiling glare range.

First claim

What is claimed is:

1. An anti-glare panel comprising:
a panel with a length and a width;
a plurality of alternating black strips and non-black strips extending along the length of the panel and periodic along the width of the panel;
a plurality of lenticular lenses periodic along the width of the panel and extending along the length of the panel and over the plurality of alternating black strips and non-black strips;
wherein light reflected from the plurality of alternating black strips is refracted by the plurality of lenticular lenses within a veiling glare range γ and light reflected from the non-black strips is refracted by the plurality of lenticular lenses outside the veiling glare range γ.

2. The anti-glare panel of claim 1 , wherein the veiling glare range γ is less than 35 degrees or more than 85 degrees relative to a surface of the panel.

3. The anti-glare panel of claim 1 , wherein each of the plurality of lenticular lenses generally covers a pair of a black strip and a non-black strip.

4. The anti-glare panel of claim 3 , wherein each of the plurality of lenticular lenses is offset from the pair of the black strip and the non-black strip.

5. The anti-glare panel of claim 1 , further comprising a glass pane adjacent the panel, the glass pane oriented with respect to the panel at a rake angle θ with the rake angle θ between 25 to 35 degrees, inclusive.

6. The anti-glare panel of claim 5 , wherein the panel is a vehicle dashboard and the glass pane is a vehicle windshield.

7. The anti-glare panel of claim 1 , wherein each of the plurality of lenticular lenses has a thickness d of less than 100 μm.

8. The anti-glare panel of claim 1 , wherein each lenticular lens has an arcuate dome top.

9. The anti-glare panel of claim 8 , wherein the arcuate dome top is a hemispherical dome top with a radius R of less than 50 μm.

10. The anti-glare panel of claim 1 , wherein the plurality of lenticular lenses have an index of refraction n between 1.2 and 2.0.

11. The anti-glare panel of claim 10 , further comprising an anti-reflection layer extending over the plurality of lenticular lenses, the anti-reflection layer having an index of refraction n α that is greater than 1.0 and less than n.

12. The anti-glare panel of claim 11 , wherein the anti-reflection layer is an MgF 2 layer.

13. The anti-glare panel of claim 1 , further comprising a low refractive index material layer extending over the plurality of lenticular lenses, the low refractive index material layer having a refractive index that is lower that the refractive index of the plurality of lenticular lenses.

14. An anti-glare dashboard comprising:
a glass pane for viewing through;
a dashboard with a length and a width, the dashboard adjacent to the glass pane and oriented at a rake angle θ relative to the glass pane;
a plurality of alternating black strips and non-black strips extending along the length of the dashboard and periodic along the width of the dashboard;
a plurality of lenticular lenses periodic along the width of the dashboard and extending along the length of the dashboard over the plurality of alternating black strips and non-black strips;
wherein light reflected from the plurality of alternating black strips is refracted by the plurality of lenticular lenses within a veiling glare range γ between 2θ-30° and 2θ+30° and light reflected from the non-black strips is refracted by the plurality of lenticular lenses outside the veiling glare range γ between 2θ-30° and 2θ+30 °.

15. The anti-glare dashboard of claim 14 , wherein each of the plurality of lenticular lenses extends over a pair of a black strip and a non-black strip.

16. The anti-glare dashboard of claim 15 , wherein each of the plurality of lenticular lenses is offset from the pair of the black strip and the non-black strip.

17. The anti-glare dashboard of claim 14 , wherein each lenticular lens array has an arcuate dome top and a thickness d less than 100 μm.

18. The anti-glare dashboard of claim 17 , wherein the arcuate dome top is a hemispherical dome top with a radius R less than 50 μm.

19. The anti-glare dashboard of claim 14 , wherein the plurality of lenticular lenses have an index of refraction n.

20. The anti-glare dashboard of claim 19 , further comprising an anti-reflection top coat extending over the plurality of lenticular lenses, the anti-reflection top coat having an index of refraction n a that is greater than an index of refraction of air and less than n.

Assignees

• Toyota Eng & Mfg North America
• Univ Michigan Regents

Inventors

• Guo Lingjie Jay
• Banerjee Debasish
• Ji Chengang

Classifications

• G02B1/11 Primary

  Anti-reflection coatings · CPC title

• G02B3/0056 Primary

  arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085) · CPC title

• G02B3/005

  arranged along a single direction only, e.g. lenticular sheets (G02B3/0043 takes precedence) · CPC title