An illumination apparatus for use in an endoscope , the endoscope having a distal end, and at least a first illumination window and a second illumination window disposed at the distal end of the endoscope , the illumination apparatus comprising: at least a first semiconductor light source and a second semiconductor light source ; and at least a first fiber bundle and a second fiber bundle , the first fiber bundle having a first plurality of optical fibers segregated to form at least a first fiber sub-bundle and a second fiber sub-bundle , the second fiber bundle having a second plurality of optical fibers segregated to form at least a third fiber sub-bundle and a fourth fiber sub-bundle , wherein each of the first fiber sub-bundle , the second fiber sub-bundle , the third fiber sub-bundle , and the fourth fiber sub-bundle has a distal end and a proximal end, wherein the proximal end of each of the first fiber sub-bundle and the second fiber sub-bundle is configured to receive light emitted by at least the first semiconductor light source , wherein the proximal end of each of the third fiber sub-bundle and the fourth fiber sub-bundle is configured to receive light emitted by at least the second semiconductor light source , wherein the respective distal ends of the first fiber sub-bundle and the second fiber sub-bundle are configured to direct the light emitted by the first semiconductor light source to the first illumination window and the second illumination window , respectively, at the distal end of the endoscope , and wherein the respective distal ends of the third fiber sub-bundle and the fourth fiber sub-bundle are configured to direct the light emitted by the second semiconductor light source to the first illumination window and the second illumination window , respectively, at the distal end of the endoscope . at least a first semiconductor light source and a second semiconductor light source ; and at least a first fiber bundle and a second fiber bundle , the first fiber bundle having a first plurality of optical fibers segregated to form at least a first fiber sub-bundle and a second fiber sub-bundle , the second fiber bundle having a second plurality of optical fibers segregated to form at least a third fiber sub-bundle and a fourth fiber sub-bundle , wherein each of the first fiber sub-bundle , the second fiber sub-bundle , the third fiber sub-bundle , and the fourth fiber sub-bundle has a distal end and a proximal end, wherein the proximal end of each of the first fiber sub-bundle and the second fiber sub-bundle is configured to receive light emitted by at least the first semiconductor light source , wherein the proximal end of each of the third fiber sub-bundle and the fourth fiber sub-bundle is configured to receive light emitted by at least the second semiconductor light source , wherein the respective distal ends of the first fiber sub-bundle and the second fiber sub-bundle are configured to direct the light emitted by the first semiconductor light source to the first illumination window and the second illumination window , respectively, at the distal end of the endoscope , and wherein the respective distal ends of the third fiber sub-bundle and the fourth fiber sub-bundle are configured to direct the light emitted by the second semiconductor light source to the first illumination window and the second illumination window , respectively, at the distal end of the endoscope . <EOS>