Title:
The optical system for a multi-sensor endoscope
Document Type and Number:
Japanese Patent JP5944912
Kind Code:
B2
Abstract:
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.
Inventors:
Kiruma, Yaniv
Levin, Victor
Levy, Moshe
Levin, Victor
Levy, Moshe
Application Number:
JP2013535586A
Publication Date:
July 05, 2016
Filing Date:
October 27, 2011
Export Citation:
Assignee:
End Choice Innovation Center Limited
International Classes:
G02B13/04; A61B1/00; A61B1/04; A61B1/06; G02B23/24; G02B23/26
Domestic Patent References:
| JP11125773A | ||||
| JP200265589A | ||||
| JP2005323874A | ||||
| JP2000330015A | ||||
| JP2004205779A | ||||
| JP2008257108A | ||||
| JP2188709A |
Foreign References:
| US20100245653 |
Attorney, Agent or Firm:
Ryoichi Takaoka
Nao Oda
Nao Oda
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