Title:
RIGID SCOPE
Document Type and Number:
WIPO Patent Application WO/2018/135192
Kind Code:
A1
Abstract:
The present invention prevents reduction in image quality by preventing shift decentering and tilt decentering of lenses in the vicinity of a pupil. Provided is a rigid scope provided with a long tubular rigid lens frame and a relay optical system that has a plurality of lenses arranged within the lens frame in the longitudinal direction of the lens frame and transmits an object image from one side to the other side of the lens frame at a substantially same magnification. The relay optical system is provided with a pair of lenses 71, 72 that are disposed adjacent to a pupil on both sides of the pupil. The lens frame is provided with a plurality of tubular bodies 51 arranged in the longitudinal direction and connected together in the vicinity of the pupil. Each of the tubular bodies 51 holds either one of the pair of lenses 71, 72 at the longitudinal outermost sides.
Inventors:
INOUE TAKAHIRO (JP)
Application Number:
PCT/JP2017/044675
Publication Date:
July 26, 2018
Filing Date:
December 13, 2017
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B1/00; A61B1/002; G02B7/02; G02B13/00; G02B23/26
Foreign References:
| JPH075377A | 1995-01-10 | |||
| JPS5172347A | 1976-06-23 | |||
| JP2007133175A | 2007-05-31 | |||
| JP2005301104A | 2005-10-27 | |||
| JPS62176815U | 1987-11-10 |
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
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