Title:
ENDOSCOPE LIGHTING SYSTEM AND ENDOSCOPE PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2023/013055
Kind Code:
A1
Abstract:
Provided is an endoscope lighting system having a high lighting efficiency. An endoscope lighting system 1 is disposed in an insertion unit and includes: an emission surface 2 from which illumination light is emitted; an incident-side optical surface 3 into which the illumination light is emitted; and an output-side optical surface 4 from which the illumination light is emitted. The incident-side optical surface 3 comprises an inner light distribution surface 3a and an outer light distribution surface 3b, and the outer light distribution surface 3b is positioned farther from a center axis 5 of the insertion unit compared to the inner light distribution surface 3a. The inner light distribution surface 3a has a first inner surface, and the first inner surface is a convex curved surface that protrudes towards the emission surface 2. The outer light distribution surface 3b is a concave curved surface that is flat or recessed towards the emission surface 2.
Inventors:
NAGATA YUKI (JP)
Application Number:
PCT/JP2021/029398
Publication Date:
February 09, 2023
Filing Date:
August 06, 2021
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B1/07; G02B23/26
Foreign References:
| JP2010066588A | 2010-03-25 | |||
| JP2014054369A | 2014-03-27 | |||
| JP2015036050A | 2015-02-23 | |||
| JP2018189755A | 2018-11-29 | |||
| JPH0968659A | 1997-03-11 | |||
| JP2010063485A | 2010-03-25 |
Attorney, Agent or Firm:
SAITO Keisuke (JP)
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