Patent ID: 8098023
Filing Date: 2012-01-17
Classification: H01S

Abstract:
1. A device comprising: a light emitting element; a driving current supply circuit for supplying a driving current to said light emitting element when causing said light emitting element to emit light; an auxiliary current supply circuit for, when the driving current supplied from said driving current supply circuit rises, supplying an auxiliary current to said light emitting element; a plurality of dumping circuits connected in parallel to said light emitting element, each dumping circuit provided with a resistor, a capacitor, and a switch connected in series; a dumping circuit setting circuit for switching conduction and non-conduction states of a switch according to switch setting information; and a suppression current supply circuit for supplying a suppression current to said light emitting element after said auxiliary current is supplied to said light emitting element by said auxiliary current supply circuit.