Light beam heating apparatus with optical energy correction comp

Details Light beam heating apparatus with optical energy correction comp Light beam heating apparatus with optical energy correction comp

1995-10-30

1997-09-23

Hoang, Tu B.

Electric resistance heating devices

Heating devices

Radiant heater

392407, 219 8512, F21V 700

Patent

active

056713240

ABSTRACT:
A photosensor arranged at the center of a light-receiving end of an optical fiber bundle detects an optical intensity which is converted by a photoelectric converter to an electric signal. Then, the optical energy provided at the optical fiber bundle is calculated based on the signal. On the other hand, a correction coefficient is calculated from optical intensity signals when the lamp is new and when the element in the lamp wears, and the setting value of the output optical intensity of the optical fiber bundle is corrected. Then, the current supplied to the lamp by a power supply is controlled according to a difference between the setting value and the measured optical energy. Thus, the optical energy to be received through the optical fiber bundle is controlled stably irrespective of the change of optical intensity distribution due to wear of the electrode of the lamp. Similarly, the correction coefficient is calculated from optical intensities measured with photodetectors arranged at and off the center of a light-receiving end of an optical fiber bundle.

REFERENCES:
patent: 3670202 (1972-06-01), Paine et al.
patent: 3805065 (1974-04-01), Williams
patent: 3996494 (1976-12-01), Suga
patent: 4190795 (1980-02-01), Schultheis
patent: 4381564 (1983-04-01), Suga
patent: 4982139 (1991-01-01), Amir et al.
patent: 5042948 (1991-08-01), Fletcher
patent: 5335309 (1994-08-01), Fujii et al.
Schoonover et al, "Lamp Intensity Control", IBM Tech. Disclosure, vol. 8, Noi. 8, Jan. 1966.

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