Illumination – Supported by vehicle structure – Condition responsive
Patent
1979-12-12
1981-09-01
Levy, Stewart J.
Illumination
Supported by vehicle structure
Condition responsive
350 9626, 350 9632, 350418, 362 32, G02B 514
Patent
active
042868394
ABSTRACT:
A light guide with a liquid light transmissive medium is connected to a variable pressure source, such as a controllable pump, and a hydraulic pressure take-off is connected to the light guide, for example adjacent the light exit window, to control the position of a positionable element, typically an optical system, such as a fluid lens, a movable lens, a diaphragm or the like, with respect to the exit light window from the light guide tube as a function of the pressure applied to the light transmitting liquid within the tube. Thus, the light guide can function simultaneously as a light guide and as a hydraulic servo pressure control element, to control the light output or the position of another element linked to the hydraulic servo positioning piston-cylinder arrangement coupled to the light transmitting fluid in the light guide.
REFERENCES:
patent: 3360640 (1967-12-01), Seitz et al.
patent: 3437803 (1969-04-01), Seitz et al.
patent: 3498695 (1970-03-01), Brouwer
patent: 3786243 (1974-01-01), Ilzig
patent: 3788730 (1974-01-01), Greeleaf
patent: 3995934 (1976-12-01), Nath
patent: 4045119 (1977-08-01), Eastgate
patent: 4209228 (1980-06-01), Chikima
Ilzig Karl F.
Scheidemann Hans
Levy Stewart J.
Original Hanau Heraeus GmbH
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