Light adjusting sheet for a planar lighting device and a planar

Details Light adjusting sheet for a planar lighting device and a planar Light adjusting sheet for a planar lighting device and a planar

1996-05-20

1998-06-09

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

349 65, 362 31, G02F 11335, F21V 704

Patent

active

057643156

ABSTRACT:
A light adjusting sheet for a planar lighting device includes a plurality of convex and concave ridges or regions arranged alternately and approximately parallel to each other on one surface. Each of the convex regions and concave regions are formed by two flat surfaces. The ridges may have a cross section of a sine curve. Another light adjusting sheet consists of a plurality of single sheets each having the above configuration, stacked together. A planar lighting device includes the light adjusting sheet of the above configuration, wherein peak lines of the convex ridges and bottom lines of the concave ridges are arranged to make a predetermined angle with an axis of a linear light source. The liquid crystal display includes a liquid crystal display element placed on front of the planar lighting device of the above configuration.

REFERENCES:
patent: 4673254 (1987-06-01), Kato et al.
patent: 5161041 (1992-11-01), Abileah et al.
patent: 5394255 (1995-02-01), Yokota et al.

Affiliated with

Also associated with

Rating

Light adjusting sheet for a planar lighting device and a planar does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light adjusting sheet for a planar lighting device and a planar , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light adjusting sheet for a planar lighting device and a planar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2206664