JPS5730804A - Light guide - Google Patents
Light guideInfo
- Publication number
- JPS5730804A JPS5730804A JP10557880A JP10557880A JPS5730804A JP S5730804 A JPS5730804 A JP S5730804A JP 10557880 A JP10557880 A JP 10557880A JP 10557880 A JP10557880 A JP 10557880A JP S5730804 A JPS5730804 A JP S5730804A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- liquid
- inside surface
- air bubbles
- light
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/032—Optical fibres with cladding with or without a coating with non solid core or cladding
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/032—Optical fibres with cladding with or without a coating with non solid core or cladding
- G02B2006/0325—Fluid core or cladding
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
PURPOSE:To permit discharging of air bubbles produced in liquid and to maintain good photoconductivity by providing air permeable liquid tight members which inhibit only the passage of gases between the outside circumference of transparent window members and the inside surface of a tube. CONSTITUTION:Light from a light source 5 is made incident to one window member 3, repeats total reflection on the inside surface of a tube 1 and is emitted from a window member 3 at the other end. When light is irradiated from the source 5, liquid 2 is heated and air bubbles appear in the liquid and stick to the inside surface of the tube 1. The tube 1 is repeated of curving during endoscope inspection or the like and since the liquid 2 is flowed by the convection caused by heating, the air bubbles peel from the inside surface of the tube 1, move to the member 3 side and are discharged to the outside through air permeable liquid tight members 4. Hence, the occurrence of the inconvenience of degraded photoconduction efficiency by the air bubbles is obviated and the lighting light is always transmitted in high efficiency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10557880A JPS5730804A (en) | 1980-07-31 | 1980-07-31 | Light guide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10557880A JPS5730804A (en) | 1980-07-31 | 1980-07-31 | Light guide |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5730804A true JPS5730804A (en) | 1982-02-19 |
Family
ID=14411387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10557880A Pending JPS5730804A (en) | 1980-07-31 | 1980-07-31 | Light guide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5730804A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5165773A (en) * | 1990-08-01 | 1992-11-24 | Genther Nath | Flexible light guide having a liquid core and illuminating device including a light guide of this type |
FR2689649A1 (en) * | 1992-04-07 | 1993-10-08 | Bridgestone Corp | Flexible pipe forming an optical waveguide and lighting apparatus using said pipe. |
-
1980
- 1980-07-31 JP JP10557880A patent/JPS5730804A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5165773A (en) * | 1990-08-01 | 1992-11-24 | Genther Nath | Flexible light guide having a liquid core and illuminating device including a light guide of this type |
FR2689649A1 (en) * | 1992-04-07 | 1993-10-08 | Bridgestone Corp | Flexible pipe forming an optical waveguide and lighting apparatus using said pipe. |
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