| 摘要 |
The invention relates to an endoscopic or microscopic device for diagnosis by means of a reaction in vivo in biological tissue, induced by light using a photosensitizer or caused by auto-fluorescence. The inventive device is characterized in that there is at least one reference wavelength ( lambda r) which is at the most 2 DELTA lambda greater or less than the intersection point wavelength ( lambda s), and to which the following therefore applies: lambda s - 2 DELTA lambda </= lambda r </= lambda s+2 DELTA lambda , and characterized in that on the basis of this reference wavelength, the spectral transmission function T1( lambda ) of the illumination beam path fulfills the following conditions for at least five wavelengths ( lambda r, lambda r + DELTA lambda , lambda r+3 DELTA lambda , lambda r- DELTA lambda and lambda r-2 DELTA lambda ): ¦T1( lambda r- DELTA lambda ) - T1( lambda -2 DELTA lambda ¦ > 10 %; ¦T1( lambda R+ DELTA lambda ) - T1( lambda R+3 DELTA lambda )¦ < 5 %, preferably < 3 %; T1( lambda r+ DELTA lambda > 0,5 %; T1( lambda r- DELTA lambda ) > 0,5 %; T1( lambda r-2 DELTA lambda ) > 0,5 %; T1( lambda + DELTA lambda ) > 0,3 %; T1( lambda r+3 DELTA lambda ) > 0,3 %; with 4nm < DELTA lambda < 6nm.
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