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OPTICAL SYSTEMS FOR MULTI-SENSOR ENDOSCOPES
专利权人:
EndoChoice Innovation Center Ltd.
发明人:
KIRMA, Yaniv,LEVIN, Victor,LEVI, Moshe
申请号:
EP11835736
公开号:
EP2635932A4
申请日:
2011.10.27
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
There is provided herein an optical system for a tip section of a multi-sensor endoscope, the system comprising: a front-pointing camera sensor a front objective lens system a side-pointing camera sensor and a side objective lens system, wherein at least one of said front and side objective lens systems comprises a front and a rear sub-systems separated by a stop diaphragm, said front sub-system comprises, in order from the object side, a first front negative lens and a second front positive lens, said rear sub-system comprises, in order from the object side, a first rear positive lens, an achromatic sub-assembly comprising a second rear positive lens and a third rear negative lens, wherein the following condition is satisfied: f(first rear positive lens)@1.8f, where f is the composite focal length of the total lens system and f(first rear positive lens) is the focal length of said first rear positive lens.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/
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