Device for diverting a portion of light energy transmitted throu

Details Device for diverting a portion of light energy transmitted throu Device for diverting a portion of light energy transmitted throu

1985-02-05

1987-10-13

Lee, John

Illumination

Supported by vehicle structure

Condition responsive

350172, 350267, 350486, 362 32, G02B 2608

Patent

active

046994505

ABSTRACT:
A light diverting device for diverting a part of the light energy transmitted through an optical conductor rod and for taking it out comprises a first optical conductor rod having a through-hole in a radial direction; second and third optical conductor rods tightly inserted into the through-hole, the second and third optical conductor rods having inclined edge surfaces which engage each other in the through-hole to form a space therebetween; and a fourth optical conductor rod mounted on an outer circumferential surface of the first optical conductor rod for covering an exposed end of the second optical conductor rod in the throughhole. Optical oil is enclosed in the space between the inclined edge surfaces of the second optical conductor rod and the third optical conductor rod. A cover member mounted on the outer circumference of the first optical conductor rod covers an exposed end of the third optical conductor rod in the through-hole. The third optical conductor rod is movable back and forth in the through-hole to vary the size of the space defined by the inclined edge surfaces of the second and third optical conductor rods, thus varying the level of optical oil in the space and the amount of light diverted from the first optical conductor rod to the fourth optical conductor rod.

REFERENCES:
patent: 4173390 (1979-11-01), Kach
patent: 4384761 (1983-05-01), Brady et al.
patent: 4400054 (1983-08-01), Biard et al.
patent: 4576436 (1986-03-01), Daniel
patent: 4610501 (1986-09-01), Mori
patent: 4636028 (1987-01-01), Mori

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