ENDOSCOPE OBJECTIVE OPTICAL SYSTEM

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专利权人:

发明人:

Azusa NOGUCHI

申请号：

US15358768

公开号：

US20170071449A1

申请日:

2016.11.22

申请国别(地区):

US

年份:

2017

代理人:

摘要：

Provided is an endoscope objective optical system including, in order from an object side, a first group having negative refractive power, a second group having positive refractive power, and a third group having positive refractive power. The second group is provided so as to be movable in an optical-axis direction. The following conditional expression is satisfied,9

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