H - Electricity – 01 – S
Patent
H - Electricity
01
S
325/1, 341/27
H01S 3/04 (2006.01) H01S 5/024 (2006.01) H01S 5/068 (2006.01)
Patent
CA 1292050
LASER TEMPERATURE CONTROLLER ABSTRACT OF THE INVENTION A laser temperature controller is disclosed for controlling the temperature of a laser device. The controller includes a bridge circuit connected to a thermistor device which is mounted on the laser package. The bridge circuit generates error signals representing a need for cooling or heating as the operating temperature of the laser rises or falls about a set threshold. A voltage conversion circuit converts the error signals to a positive or negative polarity voltage, The output of the voltage conversion circuit is applied to a pair of operational amplifiers which input the voltage and compare it to a set reference voltage. When cooling is required a first amplifier provides a biasing voltage to a transistor when a set threshold is exceeded. The associated transistor switches drive current to a thermoelectric device mounted on the laser package thereby, cooling the laser. Similarly, when heating is required a second amplifier and transistor switches current of an opposite polarity to the thermoelectric device, which heats the laser. The output signal from the voltage conversion circuit is also applied to a laser temperature alarm circuit which provides a visual indication and an alarm signal to a controller interface when a set threshold of laser temperature is exceeded.
552254
Gte Communication Systems Corporation
R. William Wray & Associates
LandOfFree
Laser temperature controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser temperature controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser temperature controller will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1226259