Line illumination device

Details Line illumination device Line illumination device

1997-08-25

2000-01-25

Pitts, Harold I.

Illumination

Elongated source light unit or support

With or including transparent or translucent member

362255, F21S 300

Patent

active

060171308

ABSTRACT:
In a line illumination device, a light source is provided at one end of a rod-like transparent light guiding member, for maintaining high and uniform illuminance, and the shape of a light scattering pattern 11 has: a first portion 11a gradually increasing in area from one end to the other end thereof; a second portion 11b continuous with the first portion 11a and increasing in area in the direction towards the other end at a higher rate than that of the first portion; and a third portion 11c continuous with the second portion 11b and extending towards the other end at a maximum width of the second portion 11b.

REFERENCES:
patent: 4186431 (1980-01-01), Fingel et al.

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