Lens film and planar light source apparatus

Details Lens film and planar light source apparatus Lens film and planar light source apparatus

1999-04-20

2000-06-13

Ben, Loha

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

362 31, 349 65, 349 61, 385146, G02B 2710, F21N 704

Patent

active

060756497

ABSTRACT:
The cross section of the vertex parts 12B of unit lenses 12 of a lens film 10 suitable for use in a planar light source apparatus for a liquid-crystal panel are the shape of an arc, this arc having a radius in of at least 10 .mu.m, but not greater than 25 .mu.m.

REFERENCES:
patent: 5581605 (1996-12-01), Murakami et al.
patent: 5887964 (1999-03-01), Higuchi et al.
patent: 5961198 (1999-10-01), Hira et al.
patent: 5999685 (1999-12-01), Goto et al.

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