Apparatus and methods for illuminating substances using color to achieve visual contrast
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United States of America Patent
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Sep 16, 2014
Grant Date -
Nov 22, 2012
app pub date -
May 16, 2011
filing date -
May 16, 2011
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Abstract
An illumination system for illuminating a first biologic substance and a second biologic substance, comprising a first light output device capable of outputting polychromatic first light, a second light output device capable of outputting polychromatic second light, the first light output device and the second light output device selected such that (i) a first apparent color results when the first light is scattered from the first biologic substance and a second apparent color results when the second light is scattered from the first biologic substance, the first apparent color and the second apparent color being substantially the same as one another and (ii) a third apparent color results when the first light is scattered from the second biologic substance and a fourth apparent color results when the second light is scattered from the second biologic substance, the third apparent color and the fourth apparent color being substantially different than one another, and means for temporally modulating amounts of the first light and amounts of the second light in a light output from the system.
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