Luminary control system

Details Luminary control system Luminary control system

2005-05-17

2005-05-17

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000, C315SDIG004, C315S158000, C315S316000

Reexamination Certificate

active

06894442

ABSTRACT:
A light source and method for controlling the same. The light source utilizes a light generator that generates a light signal of a wavelength at an intensity that is set by a control signal. The control signal is controlled by a servo that monitors the light output of the light generator and compares the monitored value with a target value. When the target value is changed, the control signal is initially replaced by a predicted control signal based on the new target value rather than the error signal generated in the servo. This provides time for the servo to adjust to the new target value. In one embodiment, the control signal includes a periodic signal that switches between a value that causes the light generator to generate light of the wavelength and a second value at which the light generator does not generate light of the wavelength.

REFERENCES:
patent: 5336976 (1994-08-01), Webb et al.
patent: 6153985 (2000-11-01), Grossman
patent: 6441558 (2002-08-01), Muthu et al.
patent: 6495964 (2002-12-01), Muthu et al.
patent: 6552495 (2003-04-01), Chang
patent: 6753661 (2004-06-01), Muthu et al.

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