Light diffusing device

Details Light diffusing device Light diffusing device

F - Mech Eng,Light,Heat,Weapons

21

V

240/90

F21V 7/04 (2006.01) G02B 26/02 (2006.01)

Patent

CA 1258055

LIGHT DIFFUSING DEVICE ABSTRACT OF THE DISCLOSURE A light diffusing device useful for evenly illumi- nating a relatively large area comprises (1) a light source member and (2) a light diffusing member comprising (A) a base plate having (a) a transparent light trans- mitting layer with at least one light incident edge face thereof, (b) a light diffusing layer formed on the front surface of the transparent light transmitting layer, (c) an intermediate layer formed between the transparent light transmitting layer and the light diffusing layer, and (d) a light reflecting surface layer formed on a rear surface of the transparent light transmitting layer; (B) a light diffusing plate superimposed over the base plate; and (C) a light reflecting film arranged between the base plate and the light diffusing plate and effective for evenly distributing light irradiated from the light diffusing layer into the light diffusing plate.

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