Semiconductor laser driving device
专利汇可以提供Semiconductor laser driving device专利检索，专利查询，专利分析的服务。并且PURPOSE:To stabilize the output of a semiconductor laser by preparing a plurality of reference operating temperatures of the laser corresponding to the detected state of the actual operation temperature, and selecting the optimum reference operation temperature at that time. CONSTITUTION:The operating temperature of a semiconductor laser 1 is detected by a temperature sensitive element 3 as a voltage value V, and the detected value V is compared with the voltage range predetermined in respective window comparators 41, 42. The voltage ranges of more than the detecting voltage value V0 at the reference operation temperature t0 and lower than the V0 are respectively set in the comparators 41, 42. When the detected value V is higher than the V0 in this manner, a gate circuit 51 is opened by the comparator 41 to select the reference voltage E1, to then apply it to a comparator 6, and when it is lower than the V0, the gate circuit 52 is opened by the comparator 42, the reference voltage E2 is selected, and is applied to the comparator 6. Thereafter, a Peltier element 8 is operated by the compared output of the comparator 6, and the laser 1 is retained at the temperature t1 or t2 corresponding to the voltage E1 or E2.，下面是Semiconductor laser driving device专利的具体信息内容。
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