JPS5730804A - Light guide - Google Patents

Light guide

Info

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
Application number
JP10557880A
Other languages
Japanese (ja)
Inventor
Takeaki Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP10557880A priority Critical patent/JPS5730804A/en
Publication of JPS5730804A publication Critical patent/JPS5730804A/en
Pending legal-status Critical Current

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.
JP10557880A 1980-07-31 1980-07-31 Light guide Pending JPS5730804A (en)

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)

* Cited by examiner, † Cited by third party
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.

Cited By (2)

* Cited by examiner, † Cited by third party
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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