Patent ID: 7635330
Filing Date: 2009-12-22
Classification: A61B

Abstract:
1. A fluorescent endoscope system for imaging an internal tissue of a body comprising: an optical source module for providing excitation light; an endoscope assembly having an optical transmission path for transmitting light provided from the optical source module to a diagnostic object and an optical detection module for transmitting reflection light and fluorescent light from the diagnostic object; an optical path split means for splitting the path of the reflection light and fluorescent light transmitted from the endoscope assembly; and a two-chip integration image detection module having a first optical detection chip for detecting the reflection light and outputting a first optical detection signal, a second optical detection chip for detecting the fluorescent light and outputting a second optical detection signal, a gain control unit for controlling a signal amplification gain value to adjust the brightness of images detected by the first and second optical detection chips, a first amplification unit for amplifying the first optical detection signal according to the signal amplification gain value, and a second amplification unit for amplifying the second optical detection signal according to the signal amplification gain value; and a digital control unit for providing the first and second optical detection chips with a common synchronization signal so that the timing of each frame of the first and second optical detection signals coincides, wherein the gain control unit maintains the brightness of images output from the image detection module regardless of a change in a distance between a distal end of the endoscope assembly and the diagnostic object by amplifying the first and second detection signals according to the signal amplification gain value controlled based on the reflection light detected by the first optical detection chip.