Apparatus for lighting a liquid crystal element

Details Apparatus for lighting a liquid crystal element Apparatus for lighting a liquid crystal element

1992-05-06

1994-08-02

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

40546, 362 27, 359 83, G02F 11335, G02F 11333

Patent

active

053351002

ABSTRACT:
With the aim of reducing the thickness of a liquid crystal lighting apparatus, side ends, different from light incident ends, of an optical conductor plate are cut out to form steps so that the optical conductor plate may be thinner at the side ends than at the light incident ends. Alternatively, portions, contiguous to the light incident ends, of a reflector sheet and a diffusion sheet are cut out to form thickness reduced portions and only the thickness reduced portions are clamped and held by a main body.

REFERENCES:
patent: 3840695 (1974-10-01), Fisher
patent: 4789224 (1988-12-01), Bougsty
patent: 4963001 (1990-10-01), Miyajima
patent: 5046826 (1991-09-01), Iwamoto et al.
patent: 5064276 (1991-11-01), Endo et al.
patent: 5184888 (1993-02-01), Sakuma et al.

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