TEMPERATURE CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a temperature control device for stabilizing temperature control of a light emitting device. SOLUTION: The temperature control device comprises: a light emitting device 100; a light emitting element control means 101; a Peltier element 102 for controlling the temperature of the light emitting device 100 to a target temperature; a temperature detecting means 103 for detecting the temperature of the light emitting device 100; a first reference voltage holding means 106 for holding a voltage corresponding to the target temperature; a reference voltage control means 107 for outputting a holding signal and a switch signal; a second reference voltage holding means 108 for holding the output voltage of the temperature detection means 103 based on the holding signal; a reference voltage switch means 109 for selecting the output of the first reference voltage holding means 106 during an extinction period and selecting the output of the second reference voltage holding means 108 during a light-emitting period based on the switch signal; and a Peltier control means 111 for controlling the Peltier element 102 so as to reduce an error between the output voltage of the temperature detection means 103 and the output voltage of the reference voltage switch means 109. COPYRIGHT: (C)2006,JPO&NCIPI