Reflecting apparatus including enhanced aluminum optical coatings and methods for making the same

Patent metadata

Field	Value
Publication number	US-2016018080-A1
Application number	US-201414336156-A
Country	US
Kind code	A1
Filing date	Jul 21, 2014
Priority date	Jul 21, 2014
Publication date	Jan 21, 2016
Grant date	—

Abstract

Provided is a method including depositing a reflecting layer on a base layer. The method further includes depositing a first oxide layer on the reflecting layer. The method further includes depositing a second oxide layer on the first oxide layer. The method further includes depositing an alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material on the second oxide layer.

First claim

We claim:

1 . A method, comprising:
depositing a reflecting layer on a substrate; depositing a first oxide layer on the reflecting layer; depositing a second oxide layer on the first oxide layer; and depositing an alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material on the second oxide layer.

2 . The method of claim 1 , wherein the first oxide layer includes a relatively low refractive index oxide layer material and the second oxide layer includes relatively high refractive index oxide layer material.

3 . The method of claim 2 , wherein the alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material includes a third oxide layer.

4 . The method of claim 3 , wherein the third oxide layer is a relatively low refractive index oxide layer material.

5 . The method of claim 1 , wherein the first oxide layer is a relatively high refractive index oxide layer material and the second oxide layer is relatively low refractive index oxide layer material.

6 . The method of claim 5 , wherein the alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material includes a third oxide layer.

7 . The method of claim 6 , wherein the third oxide layer is a relatively high refractive index oxide layer material.

8 . The method of claim 1 , wherein the reflecting layer is aluminum.

9 . The method of claim 8 , wherein the relatively low refractive index layer material is SiO 2 .

10 . The method of claim 9 , wherein the relatively high refractive index layer material is at least one of TiO 2 and Nb 2 O 5 .

11 . A multi-reflector lighting apparatus, comprising:
a reflector having a reflecting layer deposited on a base layer; a first oxide layer deposited on the reflecting layer; a second oxide layer deposited on the first oxide layer; and an alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material deposited on the second oxide layer.

12 . The apparatus of claim 11 , wherein the first oxide layer includes a relatively low refractive index oxide layer material and the second oxide layer includes relatively high refractive index oxide layer material.

13 . The apparatus of claim 12 , wherein the alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material includes a third oxide layer.

14 . The apparatus of claim 13 , wherein the third oxide layer includes a relatively low refractive index oxide layer material.

15 . The apparatus of claim 11 , wherein the first oxide layer includes a relatively high refractive index oxide layer material and the second oxide layer includes relatively low refractive index oxide layer material.

16 . The apparatus of claim 15 , wherein the alternating plurality of a relatively low refractive index oxide layer material and a relatively high refractive index oxide layer material includes a third oxide layer.

17 . The apparatus of claim 16 , wherein the third oxide layer includes a relatively high refractive index oxide layer material.

18 . The apparatus of claim 11 , wherein the reflecting layer includes aluminum.

19 . The apparatus of claim 18 , wherein the relatively low refractive index layer material includes SiO 2 .

20 . The apparatus of claim 19 , wherein the relatively high refractive index layer material includes at least one of TiO 2 and Nb 2 O 5 .

Assignees

• Ge Lighting Solutions Llc

Inventors

• Cai Dengke
• Mayer Mark J
• Saha Koushik
• Ward Benjamin James
• Zhao Tianji

Classifications

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• G02B5/0833 Primary

  comprising inorganic materials only · CPC title

• G02B5/08 Primary

  Mirrors {(vehicle mirrors involving special optical features B60R1/08)} · CPC title

• F21K9/233

  specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps · CPC title

• F21V7/28

  characterised by coatings · CPC title