Patent ID: 9301376
Filing Date: 2016-03-29
CPC Classification: G03B,H05B

Claim Text:
1. A strobe lighting unit, comprising: a xenon discharge tube having at least an anode electrode and a cathode electrode; a lighting circuit being connected between the anode electrode and the cathode electrode of the xenon discharge tube, and configured to flash the xenon discharge tube by applying a high voltage between the anode electrode and the cathode electrode of the xenon discharge tube; a switching element having at least a gate being connected to the lighting circuit, configured to input an external lighting signal into the gate of the switching element, and configured to operate the lighting circuit so as to flash the xenon discharge tube in accordance with the external light signal input into the gate of the switching element; a timing generator having an input and an output configured to receive the external lighting signal into the input of the timing generator, and configured to generate a pulse having a light-detecting time to detect whether the xenon discharge tube normally flashes or not from the output of the timing generator; a light-detecting circuit having an input and an output, the input of the light-detecting circuit connecting the anode electrode of the xenon discharge tube, and the light-detecting circuit configured to generate a light-emitting signal from the output of the light-detecting circuit when the xenon discharge tube flashes; a logical multiply circuit having an output and inputs, each of the inputs of the logical multiply circuit connecting the output of the timing generator to input the pulse having the light-detecting time and the output of the light-detecting circuit to input the light-emitting signal; and wherein the strobe lighting unit monitors a degradation of the xenon discharge tube in accordance with an output signal output from the output of the logical multiply circuit.