Light conducting plate for surface light source device and metho

Details Light conducting plate for surface light source device and metho Light conducting plate for surface light source device and metho

1994-09-22

1996-05-28

Gromada, Denise L.

Illumination

Revolving

362330, F21V 800

Patent

active

055217966

ABSTRACT:
A light conducting plate for a surface light source device wherein a linear light source is disposed at a light entrance edge at at least one end of a light conducting plate whose one surface is provided with a reflecting layer and whose other surface is defined as a light-emitting surface. The light of the linear light source is scattered within the interior of the light conducting plate by the reflecting layer and emitted from the light-emitting surface. The light conducting plate for a surface light source device is constituted by forming the reflecting layer by moving a bit along the surface of the light conducting plate to be formed with the reflecting layer while pressing it thereon at a negative rake angle to continuously form hole-like pits of random depth and width by fracturing of the surface to be formed with the reflecting layer as a result of exceeding its elastic limit, and forming a plurality of the pit rows in which the pits are continuously aligned.

REFERENCES:
patent: 5130898 (1992-07-01), Akahane
patent: 5349503 (1994-09-01), Blonder et al.

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