Light diffusing device

Details Light diffusing device Light diffusing device

1986-09-26

1988-03-01

Yeung, James C.

Illumination

Illuminated scale or dial

Edge illuminated modifier or light rod/pipe

362 31, 362307, 362 97, 40448, 350321, H02B 108

Patent

active

047290676

ABSTRACT:
A light diffusing device useful for evenly illuminating a relatively large area comprises; (A) a base plate comprising a transparent light transmitting layer, an intermediate layer and a light diffusing layer arranged in the above mentioned order, and having at least one light, incident edge face thereof; (B) a light reflecting surface layer formed on a surface of the transparent light transmitting layer opposite to the light diffusing layer; and (C) a light diffusing plate arranged on and in the vicinity of the light diffusing layer but not in contact with the light diffusing layer.

REFERENCES:
patent: 3546438 (1970-12-01), Buc
patent: 3752974 (1973-08-01), Baker et al.
patent: 4642736 (1987-02-01), Masuzawa et al.

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