Optical diffuser with ir and/or uv blocking coating

Details Optical diffuser with ir and/or uv blocking coating Optical diffuser with ir and/or uv blocking coating

G - Physics

02

F

G02F 1/1335 (2006.01)

Patent

CA 2628741

A diffuser is provided in an illumination system, where the diffuser is capable of blocking significant amounts of infrared (IR) and/or ultraviolet (UV) radiation. In certain example embodiments of this invention, the diffuser includes a glass substrate which supports an IR/UV coating(s) that blocks significant amounts of IR and/or UV radiation thereby reducing the amount of IR and/or UV radiation which can makes its way through the diffuser. In certain example embodiments, the coating may include particulate in a frit matrix so that the coating may both diffuse visible light and perform IR and/or UV blocking.

La présente invention concerne un diffuseur qui est muni d'un système d'éclairage, dans lequel le diffuseur est en mesure de bloquer d'importantes quantités de rayonnement infrarouge (IR) et/ou ultraviolet (UV). Dans certains modes de réalisation servant d'exemples de cette invention, le diffuseur inclut un substrat de verre qui soutient un ou plusieurs revêtements IR/UV qui bloquent d'importantes quantités de rayonnement IR et/ou UV, réduisant ainsi la quantité de rayonnement IR et/ou UV pouvant pénétrer dans le diffuseur. Dans certains modes de réalisation servant d'exemples, le revêtement peut inclure des particules dans une matrice de fritte de manière à ce que le revêtement puisse tant diffuser une lumière visible qu'effectuer le blocage des IR et/ou UV.

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