Backlight module and lens thereof

Details Backlight module and lens thereof Backlight module and lens thereof

2006-04-25

2006-04-25

Luebke, Renee (Department: 2875)

Illumination

Edge lighted panel

Light modifier with emission face combined with light guide...

C362S606000, C362S609000, C359S707000, C359S599000

Reexamination Certificate

active

07033061

ABSTRACT:
A backlight module for a liquid crystal display includes a reflective sheet, at least one light source above the reflective sheet, and a lens above the light source. The lens has a light-permeable surface at the bottom, a light-reflecting surface formed on the top of the lens, two side surfaces connecting the light-reflecting surface and the light-permeable surface, and a diffusion surface formed at the center of the light-reflecting surface. Profiles of the light-permeable surface and the light-reflecting surface are concave. The diffusion surface is convex. The lens of the invention allows light emitted by the light source to diffuse more uniformly.

REFERENCES:
patent: 2254962 (1941-09-01), Bitner et al.
patent: 3825322 (1974-07-01), Mast
patent: 2002/0085390 (2002-07-01), Kiyomoto et al.

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