Light-guiding panel for surface lighting and a surface lighting

Details Light-guiding panel for surface lighting and a surface lighting Light-guiding panel for surface lighting and a surface lighting

1994-10-06

1996-09-10

Gromada, Denise L.

Illumination

Revolving

362 27, 362308, 362330, 362335, 359 49, F21V 800

Patent

active

055551602

ABSTRACT:
A new compact surface-lighting body having homogeneous luminance and high light intensity which is useful for electronic devices such as tablet-type television, lap-top personal computer or word processor with liquid crystal can be obtained by disposing at the one surface of a light-guiding panel which is solid optically transparent material and having a symmetric concave-plane synthesized from said concave face and two planes tangentially adjoined thereto, said synthesized face being tangent to any point on the slants each other, of same shape and size but symmetrically confronting two rectangular triangles at their acute apexes and lying on a common basic line and they are confronting so as to contact with said slants at a distance not less than one-tenth of the length of each slant apart from the confronting point of the both triangles, and said panel provides with a light-reflecting layer and a light scattering dots at its one face.

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