Patent ID: 11913985
Assignee: PHOENIX ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A light source device, comprising:
a discharge lamp provided as a light source;
an incandescent lamp; and
a reflector container to which the discharge lamp and the incandescent lamp are attached;
a controller having a function of continuously supplying a constant current to the incandescent lamp and measuring first and second values of voltage on both ends of the incandescent lamp connected to a pair of electric supply cables; and
a determiner determining either that the discharge lamp is not the genuine product when a difference between the first and second values of voltage measured on the both ends does not fall within a predetermined value range or that the discharge lamp is the genuine product when the difference between the first and second values of voltage measured on the both ends falls within the predetermined value range, wherein
the discharge lamp is lit when receiving rays of ultraviolet light irradiated from an ultraviolet light source provided outside.