FEINGOLD, BENJAMIN HYMAN,NAMBAKAM, VASUDEV,HUI, SIMON S.
申请号：
CA2741734
公开号：
CA2741734C
申请日:
2009.11.17
申请国别(地区):
CA
年份:
2017
代理人:
摘要：
An external endoscope light source system includes light emitting diodes forproviding a light output to an endoscope.The light is provided to a fiber optic cable for transmission to theendoscope. A fiber optic receives a portion of the lightoutput and provides the output to a color sensor for sensing color values. Thecolor values are provided to a controller that adjustspower to the various LEDs to provide a white light output. Instead of a colorsensor in the light source, the light source canreceive a white balance signal from a video camera provided for an endoscope.The white balance signal varies intensity of lightoutput from each of the LEDs to obtain a white light output. The camera alsoprovides shutter speed of a camera image sensor tothe light source. The shutter speed is used to pulse or modulate the lightoutput only when the shutter of the camera is open. Bymodulating the light output by the light source, the amount of heat generatedby the light source is minimized.
