LIGHT SOURCE APPARATUS AND ENDOSCOPE SYSTEM
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United States of America Patent
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app pub date -
Jun 30, 2014
filing date -
Aug 27, 2013
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Abstract
A light source apparatus outputs light for an endoscope apparatus. A blue LED emits blue light with a peak wavelength equal to or longer than 450 nm. A wavelength cut-off filter is disposed downstream of the blue LED, for cutting off a component in the blue light having a wavelength equal to or longer than the peak wavelength. Preferably, the wavelength cut-off filter cuts off a component of a wavelength equal to or longer than a reference wavelength in a wavelength range equal to or longer than the peak wavelength. A mode changer changes over an enhancement mode and a normal mode, the enhancement mode is set for enhancing and imaging a surface blood vessel of the object by use of the wavelength cut-off filter, the normal mode is set for imaging the object by disabling a function of the wavelength cut-off filter.
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