Non-lambertian glass diffuser and method of making

Details Non-lambertian glass diffuser and method of making Non-lambertian glass diffuser and method of making

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) C03B 11/06 (2006.01) C03B 11/08 (2006.01) C03B 23/00 (2006.01) C03B 23/03 (2006.01) G02B 5/02 (2006.01)

Patent

CA 2341192

A light diffuser is fabricated by first producing a metal shim submaster (30) or other high temperature resistant diffuser having a surface relief structure on one surface. A glass substrate material (56) is heated to a suitable temperature and at least one exposed surface is thereby softened to a desired degree. The submaster diffuser (30), and particularly the surface relief structure, is placed in contact with the exposed and softened glass substrate material (56) in order to replicate the surface relief structure in the glass material (56). The submaster diffuser (30) and the glass substrate (56) are separated and then the glass is allowed to cool to form a glass diffuser.

La présente invention concerne un diffuseur de lumière dont la fabrication consiste à produire en premier un sous-gabarit d'épaisseur en métal (30) ou un autre diffuseur résistant à haute température qui présente une structure de surface en relief sur une surface. Au moins une surface d'un substrat en verre (56), porté à une température adéquate, est rendue molle à un degré recherché. Le sous-gabarit de diffuseur (30), en particulier la structure de relief en surface, est placé en contact avec le substrat en verre (56) exposé et amolli afin de répéter la structure de relief dans ce substrat. Le sous-gabarit de diffuseur (30) et le substrat en verre (56) sont séparés et le verre est mis à refroidir afin de constituer un diffuseur en verre.

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