Illumination – Revolving
Patent
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.
Katakura Takaaki
Osakada Hiromi
Gromada Denise L.
Raab Sara Sachie
Taiho Industries Co. Ltd.
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