Acrylate-Fluoro Polymeric Components for Lighting Systems and Method Therefor

Patent metadata

Field	Value
Publication number	US-2016169474-A1
Application number	US-201414569902-A
Country	US
Kind code	A1
Filing date	Dec 15, 2014
Priority date	Dec 15, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

A lighting system that includes a light source that generates electromagnetic radiation including visible light and ultraviolet radiation, and a molded component formed of an optically translucent or transparent acrylate-fluoro copolymer or blend containing a fluoropolymer and an acrylate polymer. The acrylate polymer has a visible light total transmissivity that is lower than the visible light total transmissivity of the fluoropolymer, and each of the fluoropolymer and the acrylate-fluoro copolymer or blend has a limiting oxygen index that is higher than a limiting oxygen index of the acrylate polymer.

First claim

1 . A lighting system comprising:
a light source that generates electromagnetic radiation including visible light or ultraviolet radiation; and a molded component comprising an optically translucent or transparent acrylate-fluoro blend or an optically translucent or transparent acrylate-fluoro copolymer.

2 . The lighting system according to claim 1 , wherein the molded component comprises an optically translucent or transparent acrylate-fluoro blend comprising a fluoropolymer and an acrylate polymer, wherein each of the fluoropolymer and the acrylate-fluoro blend has a limiting oxygen index that is higher than a limiting oxygen index of the acrylate polymer.

3 . The lighting system according to claim 2 , wherein the acrylate polymer has a visible light total transmissivity that is lower than a visible light total transmissivity of the fluoropolymer.

4 . The lighting system according to claim 2 , wherein the acrylate-fluoro blend comprises less than about 30 weight percent of the fluoropolymer and a balance essentially of the acrylate polymer, and the acrylate-fluoro blend has a visible light total transmissivity greater than that of the acrylate polymer.

5 . The lighting system according to claim 4 , wherein the fluoropolymer constitutes about 10 to about 30 weight percent of the acrylate-fluoro blend by weight.

6 . The lighting system according to claim 2 , wherein the acrylate-fluoro blend comprises about 30 weight percent to about 70 weight percent of the fluoropolymer and a balance essentially of the acrylate polymer, and the acrylate-fluoro blend has visible light diffusivity properties greater than that of the acrylate polymer.

7 . The lighting system according to claim 2 , wherein the acrylate polymer comprises a methacrylate.

8 . The lighting system according to claim 7 , wherein the methacrylate is polymethyl methacrylate.

9 . The lighting system according to claim 2 , wherein the fluoropolymer comprises vinyl fluoride.

10 . The lighting system according to claim 9 , wherein the vinyl fluoride is polyvinylidene fluoride.

11 . The lighting system according to claim 1 , wherein the limiting oxygen index of the acrylate-fluoro copolymer or acrylate-fluoro blend is greater than 17% to about 35%.

12 . The lighting system according to claim 1 , wherein the component has a surface defined by a surface region thereof, and a coating overlying the surface, the coating containing a combination of fluoro-base monomers, oligomers, and/or polymers and delays oxygen diffusion into the surface region during a combustion.

13 . The lighting system according to claim 1 , wherein the lighting system is a light-emitting diode lamp.

14 . The lighting system according to claim 13 , wherein the component is a protective cover that encloses a light-emitting diode within the lamp or a lens within the lamp.

15 . A lighting system comprising:
a light-emitting diode that generates electromagnetic radiation including visible light or ultraviolet radiation; and a molded component comprising an optically translucent or transparent acrylate-fluoro copolymer or blend comprising 30 weight percent or less of a fluoropolymer and the balance essentially an acrylate polymer, wherein the acrylate polymer has a visible light total transmissivity that is lower than a visible light total transmissivity of the fluoropolymer, the acrylate-fluoro copolymer or blend has a visible light total transmissivity greater than that of the acrylate polymer, and each of the fluoropolymer and the acrylate-fluoro copolymer or blend has a limiting oxygen index of greater than 17% and is higher than a limiting oxygen index of the acrylate polymer.

16 . The lighting system according to claim 15 , wherein the fluoropolymer constitutes at least 10 to 30 weight percent of the acrylate-fluoro copolymer or blend, by weight.

17 . The lighting system according to claim 15 , wherein the acrylate polymer is polymethyl methacrylate and the fluoropolymer is polyvinylidene fluoride.

18 . A lighting system comprising:
a light-emitting diode that generates electromagnetic radiation including visible light or ultraviolet radiation; and a molded component comprising an optically translucent or transparent acrylate-fluoro copolymer or blend comprising more than 30 weight percent of a fluoropolymer and the balance essentially an acrylate polymer, wherein the acrylate polymer has a visible light total transmissivity that is lower than visible light total transmissivities of each of the fluoropolymer and the acrylate-fluoro copolymer or blend, the acrylate-fluoro copolymer or blend has visible light diffusivity properties greater than that of the acrylate polymer, and each of the fluoropolymer and the acrylate-fluoro copolymer or blend has a limiting oxygen index of greater than 17% and is higher than a limiting oxygen index of the acrylate polymer.

19 . The lighting system according to claim 18 , wherein the fluoropolymer constitutes more than 30 to about 70 weight percent of the acrylate-fluoro copolymer or blend by weight.

20 . The lighting system according to claim 18 , wherein the acrylate polymer is polymethyl methacrylate and the fluoropolymer is polyvinylidene fluoride.

Assignees

• Ge Lighting Solutions Llc

Inventors

• Cai Dengke
• Allen Gary Robert
• Kaminski Mark Edward
• Yoder Benjamin Lee

Classifications

• F21V5/04

  of lens shape · CPC title

• F21Y2101/02

  Mechanical Engineering · mapped topic

• F21V3/0445 Primary

  Mechanical Engineering · mapped topic

• F21K9/232

  specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb · CPC title

• F21V3/0625 Primary

  the material diffusing light, e.g. translucent plastics · CPC title