Light source and optical coherence tomography apparatus using the same
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United States of America Patent
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Sep 20, 2016
Grant Date -
Apr 3, 2014
app pub date -
Sep 24, 2013
filing date -
Sep 28, 2012
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Abstract
A light source includes a control unit that controls currents injected into at least one light emitting region and a light emission spectrum conversion region. The at least one light emitting region includes a first light emitting region and a second light emitting region different from the first light emitting region, light that is emitted from the first light emitting region and passes through the light emission spectrum conversion region is combined with the light that is emitted from the first or second light emitting region and does not pass through the light emission spectrum conversion region. The control unit controls the currents injected into the light emission spectrum conversion region and the first light emitting region so that the current density of the light emission spectrum conversion region is smaller than the current density of the first light emitting region.
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