Patent ID: 11955771
Assignee: NORTHWEST INSTRUMENT INC.
Field: Optics (Instruments)
Classification: CPC H | IPC H

Claim 0:
1. A control device for controlling a temperature of a laser device, comprising:
a pulse width modulation (PWM) signal generator configured to generate a PWM signal;
a temperature acquisition circuit configured to acquire a temperature of the laser device and convert the temperature into a measurement voltage;
a voltage comparator configured to compare the measurement voltage associated with the temperature of the laser device to a temperature threshold voltage and to output a comparison result signal; and
a logic circuit configured to generate, based on the PWM signal and the comparison result signal, a drive signal to drive the laser device, wherein the logic circuit is further configured to invert the PWM signal to reduce a power for driving the laser device, when the measurement voltage associated with the temperature of the laser device is higher than the temperature threshold voltage.