Bright-field light source for fluorescence observation and surgical microscope with bright-field light source
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United States of America Patent
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Issued Date -
Oct 19, 2006
app pub date -
Apr 12, 2006
filing date -
Apr 15, 2005
priority date (Note) -
Abandoned
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Abstract
A bright-field light source for a surgical microscope emits visible light whose spectral intensity in a wavelength at the wavelength (672 nm) of fluorescence radiated from an observation object is weaker than that of the remaining wavelength regions of the visible light. With the bright-field light source, the surgical microscope allows a clear observation of the periphery of the fluorescent object. The spectral intensity of the visible light from the bright-field light source is relatively suppressed in the wavelength region of the fluorescence radiated from the observation object. Accordingly, the visible light from the bright-field light source never bothers observation of the fluorescent object. The bright-field light source and an excitation light source such as a semiconductor laser unit are mounted on the surgical microscope without a need of additional supports.
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