Optical devices with asymmetric layer structure

Patent metadata

Field	Value
Publication number	US-11650473-B2
Application number	US-201916450426-A
Country	US
Kind code	B2
Filing date	Jun 24, 2019
Priority date	Jun 29, 2018
Publication date	May 16, 2023
Grant date	May 16, 2023

Abstract

An article includes a reflector having a first surface, a second surface opposite the first surface, and a third surface; and a first selective light modulator layer external to the first surface of the reflector; wherein the third surface of the reflector is open. A method of making an article is also disclosed.

First claim

What is claimed is:

1. An article comprising:
a reflector having a first surface, a second surface opposite the first surface, and a third surface;
a first selective light modulator layer external to the first surface of the reflector;
a first absorber layer external to the first selective light modulator layer; and
a second selective light modulator layer external to the first absorber layer;
wherein the third surface of the reflector is open,
wherein the article has an asymmetric layer structure, and
wherein the first selective light modulator layer comprises a host material, a defoamer and i) an oxygen inhibition mitigation composition or ii) 3-Ethyl-3-hydroxymethyloxetane, the oxygen inhibition mitigation composition comprising at least one acrylate chosen from epoxy acrylates, polyester acrylates, polyether acrylates and urethane acrylates.

2. The article of claim 1 ,
wherein the first selective light modulator layer is at least one of non-absorbing and absorbing.

3. The article of claim 2 ,
wherein the first selective light modulator layer is non-absorbing, and the second selective light modulator layer is absorbing.

4. The article of claim 1 , further comprising a magnetic-containing layer having a first surface and a second surface opposite the first surface;
wherein the reflector layer is external to the first surface of the magnetic-containing layer.

5. The article of claim 4 ,
wherein the first selective light modulator layer is non-absorbing.

6. The article of claim 1 , further comprising a release layer.

7. An optical device comprising the article of claim 1 .

8. A composition comprising the optical device of claim 7 and a liquid medium.

9. The article of claim 1 , wherein the article is a flake.

10. The article of claim 1 , wherein the first selective light modulator layer selectively absorbs specific wavelengths of energy.

11. The article of claim 1 , having a lamellar shape.

12. The article of claim 1 , wherein the article exhibits a property chosen from optical interference, light absorption, light reflection, light scattering, and combinations thereof.

13. The article of claim 1 , wherein the first selective light modulator layer and the second selective light modulator layer are self-leveled layers independently having a variation in optical thickness of less than about 5%.

14. An article, comprising:
a transparent layer having a first surface, a second surface opposite the first surface, and a third surface; and
a first selective light modulating layer external to the first surface of the transparent layer;
wherein the third surface of the transparent layer is open,
wherein the article has an asymmetric layer structure, and
wherein the first selective light modulator layer comprises a host material, a defoamer and i) an oxygen inhibition mitigation composition or ii) 3-Ethyl-3-hydroxymethyloxetane, the oxygen inhibition mitigation composition comprising at least one acrylate chosen from epoxy acrylates, polyester acrylates, polyether acrylates and urethane acrylates.

15. A method for manufacturing an article comprising:
depositing a reflector layer having a first side and a second side opposite the first side;
depositing a first selective light modulator layer external to the first surface of the reflector layer;
depositing a first absorber layer external to the first selective light modulator layer; and
depositing a second light selective light modulator layer external to the first absorber layer;
wherein the article has an asymmetric layer structure, and
wherein the first selective light modulator layer and the second selective light modulator layer are deposited using a liquid coating process chosen from a slot die process, a slot-bead process, a slide bead process, a slot curtain process, a slide curtain process, a tensioned web slot process, a gravure process and a roll coating process.

16. The method of claim 15 , wherein the first selective light modulator layer is at least one of non-absorbing and absorbing.

17. The method of claim 16 , wherein the first selective light modulator layer is non-absorbing.

18. The method of claim 15 , wherein the reflector layer is deposited on a substrate, the method further comprising depositing a magnetic-containing layer between the substrate and the reflector layer.

19. The method of claim 18 , wherein the first selective light modulator layer is non-absorbing.

20. The method of claim 15 , wherein the first selective light modulator layer and the second selective light modulator layer are self-leveled layers independently having a variation in optical thickness of less than about 5%.

Assignees

• Viavi Solutions Inc

Inventors

• Kozlowski Mark
• Seydel Johannes P
• Zieba Jaroslaw

Classifications

• G02F1/19

  based on variable-reflection or variable-refraction elements not provided for in groups G02F1/015 - G02F1/169 · CPC title

• C09D5/004

  Reflecting paints; Signal paints · CPC title

• G02B5/287

  comprising at least one layer of organic material · CPC title

• G02B5/22

  Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} · CPC title

• C09C1/0078

  Pigments consisting of flaky, non-metallic substrates, characterised by a surface-region containing free metal · CPC title