Laser flash lamp control system

Details Laser flash lamp control system Laser flash lamp control system

1993-11-12

1996-03-12

Pascal, Robert J.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

606 12, H05B 3700

Patent

active

054989353

ABSTRACT:
An apparatus and method for controlling the current delivered to a flash lamp is disclosed. The apparatus and method is particularly useful for controlling the current delivered to a flash lamp used in a laser and most particularly useful in connection with lasers used for medical procedures. The apparatus controls the length of the electrical pulse which is delivered to the flash lamp and also limits the current which passes through the flash lamp to that which is desired for optimized operation. A semiconductor switch electrically connects and disconnects the flash lamp from one or more capacitors for the desired length of time. The length of time can be automatically adjusted to provide the desired flash lamp output and thus the desired laser output. The switch provides substantially a square wave having a plateau voltage with very fast rise and fall times on both sides of the plateau so that a suitable square wave is formed. The semiconductor switch also limits the value of the current passing through the flash lamp to a substantially predetermined value so that the operation of the lamp is optimized.

REFERENCES:
patent: 4603973 (1986-08-01), Crow
patent: 4950268 (1990-08-01), Rink

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