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OBLIQUE-VIEW OBJECTIVE OPTICAL SYSTEM AND OBLIQUE-VIEW ENDOSCOPE EQUIPPED WITH SAME
专利权人:
发明人:
申请号:
EP15882714.7
公开号:
EP3260899A1
申请日:
2015.11.17
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
An oblique-viewing objective optical system includes in order from an object side, a front-side lens group GF which includes a negative lens, an optical path converting element P, an aperture stop S, and a rear-side lens group GR having a positive refractive power, wherein the rear-side lens group GR includes a positive lens L2 and a cemented lens having a positive refractive power, and the cemented lens includes in order from the object side a positive lens L3 and a negative lens L4, and the following conditional expressions (1), (2), and (3) are satisfied: −2.0
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