| 摘要 |
<p>An LED optical source device comprises a plurality of LED optical sources (2R, 2G, 2B) and an LED driving circuit (3) for driving the plurality of LED optical sources (2R, 2G, 2B) so that the plurality of LED optical sources (2R, 2G, 2B) are sequentially lighted. The LED driving circuit (3) comprises one DC/DC convertor (31) which converts power voltage based on a feedback signal and outputs the converted voltage to the plurality of LED optical sources (2R, 2G, 2B), a plurality of lighting control circuits (33R, 33G, 33B) which are provided corresponding to the plurality of LED optical sources (2R, 2G, 2B) and light a corresponding LED optical source based on a lighting timing signal for the corresponding LED optical source, and a voltage feedback unit (32) which switches the feedback signal which is inputted to the DC/DC convertor (31) according to the LED optical source to be lighted out of the plurality of LED optical sources (2R, 2G, 2B) based on the lighting timing signal for each of the plurality of LED optical sources (2R, 2G, 2B).</p> |
