Title:
BRIGHT RELAY OPTICAL SYSTEM, RIGID SCOPE OPTICAL SYSTEM USING SAME, AND RIGID SCOPE
Document Type and Number:
WIPO Patent Application WO/2017/216969
Kind Code:
A1
Abstract:
Provided are: a bright relay optical system that has a large numerical aperture and excellently corrects chromatic aberration; a rigid scope optical system using same; and a rigid scope. The relay optical system has: an object-side lens arranged furthest on the object side; an image-side lens arranged furthest on the image side; and cemented lenses having positive refractive power. The object-side lens has positive refractive power and is arranged such that the convex surface thereof faces the object side. The image-side lens has positive refractive power and is arranged such that the convex surface thereof faces the image side. The plurality of cemented lenses are arranged between the object-side lens and the image-side lens and are characterized by fulfilling conditional formula (1). 0.04 < Gce/Drel < 0.4 (1). In the formula, Gce is the minimum interval between adjacent cemented lenses and Drel is the distance from the object surface to the image surface in the relay optical system.
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Inventors:
AMANAI TAKAHIRO (JP)
UZAWA TSUTOMU (JP)
UZAWA TSUTOMU (JP)
Application Number:
PCT/JP2016/068167
Publication Date:
December 21, 2017
Filing Date:
June 17, 2016
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
G02B13/00; A61B1/00; G02B23/26
Foreign References:
| JPH08122666A | 1996-05-17 | |||
| JPH075377A | 1995-01-10 | |||
| JPS6177819A | 1986-04-21 |
Attorney, Agent or Firm:
SAITO Keisuke et al. (JP)
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