A light source device comprising: a plurality of laser light emitting elements; a temperature sensor (10, 10a) 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, 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 (10, 10a) and wherein the drive unit is configured to: when the temperature of the light emitting elements reaches a predetermined upper temperature threshold, 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, resume the light emission of the light emitting elements. a plurality of laser light emitting elements; a temperature sensor (10, 10a) 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, 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 (10, 10a) and wherein the drive unit is configured to: when the temperature of the light emitting elements reaches a predetermined upper temperature threshold, 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, resume the light emission of the light emitting elements. when the temperature of the light emitting elements reaches a predetermined upper temperature threshold, 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, resume the light emission of the light emitting elements.