GB1290714A - - Google Patents
Info
- Publication number
- GB1290714A GB1290714A GB1290714DA GB1290714A GB 1290714 A GB1290714 A GB 1290714A GB 1290714D A GB1290714D A GB 1290714DA GB 1290714 A GB1290714 A GB 1290714A
- Authority
- GB
- United Kingdom
- Prior art keywords
- axis
- sept
- value
- section
- formula
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2446—Optical details of the image relay
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00165—Optical arrangements with light-conductive means, e.g. fibre optics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00165—Optical arrangements with light-conductive means, e.g. fibre optics
- A61B1/0017—Details of single optical fibres, e.g. material or cladding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/002—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor having rod-lens arrangements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0087—Simple or compound lenses with index gradient
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Optical Integrated Circuits (AREA)
Abstract
1290714 Light guides NIPPON SELFOC K K 1 Aug 1969 and 26 Sept 1969 [26 Sept 1968 and 1 Oct 1968] 20128/72 Divided out of 1290713 Heading G2J A lens element in the form of a light guide comprises a body having an axis of optical symmetry and a refractive index variation in a transverse plane in accordance with the formula N = N (1 Œar<SP>2</SP>) where N is the value of the index at the axis, n the value at a radial distance r, a is a positive constant, and at least one of N and a varying along the axis of the body. The body may be of uniform cross-section, e.g. as in Fig. 10 (not shown) or of varying cross-section, e.g. as body 1 in Fig. (A) wherein a Gaussian intensity distribution light beam L is madematched by the conical body 1 for propagation in a guide element 73 in which the same formula as above applies, but N and a do not vary with distance. Further mode-matching exercises are described with reference to Figs. 15, 16 (not shown).
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5696868 | 1968-08-10 | ||
| JP6009868 | 1968-08-21 | ||
| JP6009968 | 1968-08-21 | ||
| JP6009768 | 1968-08-21 | ||
| JP7007568 | 1968-09-26 | ||
| JP7172568 | 1968-10-01 | ||
| JP7172268 | 1968-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1290714A true GB1290714A (en) | 1972-09-27 |
Family
ID=27564915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1290714D Expired GB1290714A (en) | 1968-08-10 | 1969-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1290714A (en) |
-
1969
- 1969-09-26 GB GB1290714D patent/GB1290714A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1433395A (en) | Optical transmission arrangements | |
| GB1386734A (en) | Light guide arrangement | |
| GB1333721A (en) | Weld checking apparatus and method | |
| GB1381644A (en) | Transparent stratified structure with parallel faces | |
| GB1006409A (en) | Improvements in or relating to the guiding of wave beams | |
| GB1124139A (en) | Light deflectors | |
| GB1290714A (en) | ||
| JPS533356A (en) | Laser interference | |
| GB1266930A (en) | ||
| GB1475478A (en) | Multimode light guide | |
| ES451740A1 (en) | Optical fibre having low mode dispersion | |
| GB1282511A (en) | An optical coupling arrangement for fibrous light guide elements | |
| JPS529449A (en) | Optical transmission path coupler | |
| GB1496324A (en) | Optical fibre waveguide with effective refractive index profile | |
| JPS5229234A (en) | Optical fiber | |
| JPS5227644A (en) | Optical transmission fiber | |
| JPS5233545A (en) | Light coupler | |
| JPS5374084A (en) | Measuring method for refractive index distribution of optical transmission path | |
| FR2258062A1 (en) | Optical fibre signal transmission system - uses distribution head to transmit optical signal between channels | |
| JPS53136A (en) | Beam splitter | |
| JPS5245890A (en) | Laser light scanning equipment | |
| GB969020A (en) | Improvements in or relating to drum lenses | |
| JPS53106140A (en) | Opitcal branching insept and preparation thereof | |
| JPS53130050A (en) | Convergent optical transmitter with recesses | |
| JPS57150814A (en) | Optical distributing circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |