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CAMERA HEAD FOR ENDOSCOPE AND ENDOSCOPE APPARATUS HAVING THE SAME
专利权人:
发明人:
Takayuki KATO,Makoto TOMIOKA,Takahiro INOUE,Kazuo MORITA
申请号:
US15690056
公开号:
US20170354321A1
申请日:
2017.08.29
申请国别(地区):
US
年份:
2017
代理人:
摘要:
There is provided a camera head for endoscope which enables to achieve a favorable fluorescent image in any wavelength band when the observation is switched over from a normal white-light image observation to an observation of fluorescent images of different wavelength bands.The camera head for endoscope includes a camera-head optical system which includes a spectral prism having a dichroic film which splits light from the endoscope into white light and fluorescent light, and a first image pickup element and a second image pickup element which are disposed in respective optical paths split into two by the spectral prism, and the first image pickup element is for the white-light image observation in which a white-light image is captured, and the second image pickup element is for a fluorescent-image observation in which two fluorescent images of different wavelengths are captured, and the first image pickup element is disposed at a position at which an image is formed in an optical path for the white-light image observation, and the second image pickup element is disposed at a position between two positions at which the two fluorescent images are formed in an optical path for the fluorescent-mage observation, and the camera head for endoscope satisfies the following conditional expression (1).d≦9×P×Fno  (1)
来源网站:
中国工程科技知识中心
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