JPS5569116A - Endscope optical system - Google Patents
Endscope optical systemInfo
- Publication number
- JPS5569116A JPS5569116A JP14203778A JP14203778A JPS5569116A JP S5569116 A JPS5569116 A JP S5569116A JP 14203778 A JP14203778 A JP 14203778A JP 14203778 A JP14203778 A JP 14203778A JP S5569116 A JPS5569116 A JP S5569116A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- back focus
- lens
- endscope
- adhesive agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Endoscopes (AREA)
Abstract
PURPOSE: To make possible wider angle by an objective lens of a short back focus with simple constitution by bonding the constitutional elements of the objective lens to the end of an image guide by means of an adhesive agent.
CONSTITUTION: If the convex optical elements whose one side constituting the objective lens 1 of the endscope is plane are bonded to the end face of an optical fiber 4 forming an image guide by using an adhesive agent 3, the back focus of the lens 1 becomes substantially longer owing to the movement of the optical fiber 4 in the optical axis direction of the lens 1. Hence, the field of view may be widened by the use of the objective lens of a short back focus with the simple constitution.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14203778A JPS5569116A (en) | 1978-11-17 | 1978-11-17 | Endscope optical system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14203778A JPS5569116A (en) | 1978-11-17 | 1978-11-17 | Endscope optical system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5569116A true JPS5569116A (en) | 1980-05-24 |
Family
ID=15305898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14203778A Pending JPS5569116A (en) | 1978-11-17 | 1978-11-17 | Endscope optical system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569116A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5886513A (en) * | 1981-11-18 | 1983-05-24 | Olympus Optical Co Ltd | Endoscope optical system |
JP2014056097A (en) * | 2012-09-12 | 2014-03-27 | Kiyohara Optics Inc | Binoculars |
-
1978
- 1978-11-17 JP JP14203778A patent/JPS5569116A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5886513A (en) * | 1981-11-18 | 1983-05-24 | Olympus Optical Co Ltd | Endoscope optical system |
JP2014056097A (en) * | 2012-09-12 | 2014-03-27 | Kiyohara Optics Inc | Binoculars |
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