LIGHT-SOURCE DRIVING APPARATUS AND LIGHT-SOURCE DRIVING METHOD
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United States of America Patent
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May 23, 2017
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Jun 30, 2016
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Abstract
A light-source driving apparatus according to an embodiment includes a power supplying unit, a drive unit, and a controller. The power supplying unit generates a voltage by a step-up operation or a step-down operation to output the voltage to one or more light sources. The drive unit drives the one or more light sources. The controller causes the drive unit to drive the one or more light sources after a set time is elapsed from a start of the operation of the power supplying unit. The controller includes a change unit that changes a length of the set time and/or a rise rate of the voltage during the set time on the basis of states of one or more factors that affect a drop in the voltage.
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