Abstract: A dimming power supply device includes a case, a trigger input connector, a trigger input circuit, an FPGA writing enabling circuit, and a dimming FPGA. The trigger input circuit, the FPGA writing enabling circuit, and the dimming FPGA are disposed inside the case. A plurality of terminals are disposed in the trigger input connector. A signal input to at least one terminal of the plurality of terminals is input to the trigger input circuit. A signal input to the at least one terminal of the plurality of terminals is input to the FPGA writing enabling circuit. In an FPGA writing mode, a circuit configuration of the dimming FPGA is rewritten by inputting an output signal of the FPGA writing enabling circuit. In a dimming mode, a light source is dimmed by inputting an output signal of the trigger input circuit as a trigger.

Abstract: Provided is a lighting device for inspection allowing inspection using lights of a plurality of colors with a simple structure. The lighting device includes: a housing; four light source units disposed inside the housing; a light guide plate that guides light emitted from the light source units and that has four end face portions; and a reflective portion that is formed on an upper face of the light guide plate and that reflects light toward a lower face of the light guide plate. Each of the light source units is disposed for each of the end face portions of the light guide plate and is able to emit light of one color and is independently controlled for dimming, and the four light source units are able to emit lights of collectively two or more colors.