Patent ID: 8757813
Filing Date: 2014-06-24
Classification: G03B,H04N,H05B

Abstract:
1. A light source device comprising: a plurality of semiconductor light source elements; and a drive control section configured to cyclically supply, to each of the plurality of semiconductor light source elements by time division, a power signal with a sawtooth pulse waveform in which a crest value at a rise time is larger than a crest value at a fall time and in which the crest value at the rise time and the crest value at the fall time are set such that a maximum temperature of the plurality of semiconductor light source elements when using the sawtooth pulse waveform is lower than a maximum temperature of the plurality of semiconductor light source elements when using a square pulse waveform for a same given value of supplied power of the power signal, to thereby light-emission-drive the semiconductor light source elements.