Title:
内視鏡用光学系および内視鏡
Document Type and Number:
Japanese Patent JP6981915
Kind Code:
B2
Abstract:
The endoscope optical system consists of: a first lens group that is used only for front viewing; a plurality of second lens groups that have a negative lens at a position closest to an object side and are used only for side viewing; a third lens group that is commonly used in front viewing and side viewing; and a synthesizing section that synthesizes the rays emitted from the first lens group and the rays emitted from the second lens groups and causes the synthesized rays to be incident into the third lens group. The rays emitted from the first lens group and the rays emitted from the second lens groups are imaged on a same plane.
Inventors:
Kazunori Inoue
Application Number:
JP2018080605A
Publication Date:
December 17, 2021
Filing Date:
April 19, 2018
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G02B13/04; A61B1/00; G02B13/06; G02B23/26
Domestic Patent References:
| JP7311348A | ||||
| JP2010117665A |
Foreign References:
| WO2012008312A1 | ||||
| WO2013065294A1 |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office
Previous Patent: Thermally conductive silicone composition and its cured product
Next Patent: Karaoke system
Next Patent: Karaoke system