Endoscope system using normal light and fluorescence

Details Endoscope system using normal light and fluorescence Endoscope system using normal light and fluorescence

2007-02-06

2007-02-06

Leubecker, John P. (Department: 3739)

Surgery

Endoscope

Having imaging and illumination means

C600S109000, C600S178000, C600S476000, C600S477000

Reexamination Certificate

active

10146389

ABSTRACT:
In the light source unit3A, a switching filter section14,which can switch the RGB filter for normal-light observation and a filter for fluorescent observation on the optical path, is installed in front of the lamp12, where if the fluorescent image mode is selected, the excitation light in a part of the blue wavelength band is supplied to the electronic endoscope2A, and the excitation light reflected by the subject side is shielded by the excitation light cut filter27in front of the CCD28so as to obtain the fluorescent image, and also the signal of the fluorescent image and the signals of the two reflected light images which are set in a predetermined wavelength band are passed through the image processing circuit38, where a matrix circuit for appropriately allocating the color signals of the R, G and B channels is installed, and as a result, the images can be displayed on the monitor5in pseudo-colors in hues which allow easy identification of a normal tissue and a pathologically affected tissue.

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Office Action issued by European Patent Office on Apr. 28, 2005 in connection with corresponding European patent application No. 02010242.2.

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