A light source device comprising: a plurality of laser light emitting elements ; a temperature sensor configured to detect a temperature near the laser light emitting elements ; and a drive unit configured to drive each of the laser light emitting elements according to a light emission parameter that defines a light emission operation of the laser light emitting elements per predetermined unit; a control unit configured to receive captured data by an image sensor that receives and captures light emitted from the laser light emitting elements and reflected by a subject (S), and further configured to generate the light emission parameter per the predetermined unit on a basis of the captured data by the image sensor and send it to the drive unit ; wherein the drive unit is further configured to control a drive current amount of the laser light emitting elements per the predetermined unit according to the light emission parameter; wherein either the drive unit or the control unit is configured to receive information on the detected temperature from the temperature sensor and wherein the drive unit is configured to: when the temperature of the light emitting elements reaches a predetermined upper temperature threshold (th1), suspend the light emission of the light emitting elements , and when thereafter when it is detected that the temperature of the light emitting elements drops to a predetermined lower temperature threshold (th2), resume the light emission of the light emitting elements . a plurality of laser light emitting elements ; a temperature sensor configured to detect a temperature near the laser light emitting elements ; and a drive unit configured to drive each of the laser light emitting elements according to a light emission parameter that defines a light emission operation of the laser light emitting elements per predetermined unit; a control unit configured to receive captured data by an image sensor that receives and captures light emitted from the laser light emitting elements and reflected by a subject (S), and further configured to generate the light emission parameter per the predetermined unit on a basis of the captured data by the image sensor and send it to the drive unit ; wherein the drive unit is further configured to control a drive current amount of the laser light emitting elements per the predetermined unit according to the light emission parameter; wherein either the drive unit or the control unit is configured to receive information on the detected temperature from the temperature sensor and wherein the drive unit is configured to: when the temperature of the light emitting elements reaches a predetermined upper temperature threshold (th1), suspend the light emission of the light emitting elements , and when thereafter when it is detected that the temperature of the light emitting elements drops to a predetermined lower temperature threshold (th2), resume the light emission of the light emitting elements . when the temperature of the light emitting elements reaches a predetermined upper temperature threshold (th1), suspend the light emission of the light emitting elements , and when thereafter when it is detected that the temperature of the light emitting elements drops to a predetermined lower temperature threshold (th2), resume the light emission of the light emitting elements . <EOS>