JPS5797509A - Lighting system for endoscope - Google Patents

Lighting system for endoscope

Info

Publication number
JPS5797509A
JPS5797509A JP55173201A JP17320180A JPS5797509A JP S5797509 A JPS5797509 A JP S5797509A JP 55173201 A JP55173201 A JP 55173201A JP 17320180 A JP17320180 A JP 17320180A JP S5797509 A JPS5797509 A JP S5797509A
Authority
JP
Japan
Prior art keywords
light
concave
lens
concave lens
light guide
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
JP55173201A
Other languages
Japanese (ja)
Inventor
Kimihiko Nishioka
Hisao Yabe
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 Corp
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 Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP55173201A priority Critical patent/JPS5797509A/en
Priority to US06/328,392 priority patent/US4529267A/en
Priority to DE19813148599 priority patent/DE3148599A1/en
Publication of JPS5797509A publication Critical patent/JPS5797509A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00096—Optical elements
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Astronomy & Astrophysics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Abstract

PURPOSE:To reduce distortion due to an optical system by achieving wide-area lighting by refracting a light beam gradually by providing at least two curved surfaces in front of the light emission end of a light guide. CONSTITUTION:The tip surface 10a of a light guide 10 is made into a concave surface and a concave lens 11 is arranged in front of it. This results in that light emitted from the light guide 10 through the concave lens 11 is equivalent to light incident to a concave lens 12 in parallel to the optical axis and passed through the concave lens 12 and concave lens 11. In this lens system, the light beam is reflected gradually by two concave parts 12a and 11a to refract the light beam with incident light height (h) at an angle omega. Therefore, the increase rate domega/dh of the omega when the (h) increases never increases rapidly as the (h) increases as compared with the refraction of one concave surface 2a. Namely, the distortion of the lens system is less than that of a lens system composed of one concave lens. Thus, the distortion resulting from the optical system is reduced.
JP55173201A 1980-12-10 1980-12-10 Lighting system for endoscope Pending JPS5797509A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55173201A JPS5797509A (en) 1980-12-10 1980-12-10 Lighting system for endoscope
US06/328,392 US4529267A (en) 1980-12-10 1981-12-07 Illuminating system for endoscopes
DE19813148599 DE3148599A1 (en) 1980-12-10 1981-12-09 LIGHTING SYSTEM FOR ENDOSCOPES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55173201A JPS5797509A (en) 1980-12-10 1980-12-10 Lighting system for endoscope

Publications (1)

Publication Number Publication Date
JPS5797509A true JPS5797509A (en) 1982-06-17

Family

ID=15955975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55173201A Pending JPS5797509A (en) 1980-12-10 1980-12-10 Lighting system for endoscope

Country Status (1)

Country Link
JP (1) JPS5797509A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04284412A (en) * 1991-03-14 1992-10-09 Toshiba Corp Optical fiber bundle
JPH06273678A (en) * 1993-03-18 1994-09-30 Toshiba Corp Diffuse illumination optical system for endoscope
JPH09299326A (en) * 1996-05-17 1997-11-25 Olympus Optical Co Ltd Illuminating system for endoscope
JP2010060298A (en) * 2008-09-01 2010-03-18 Omron Corp Lamp tool unit and object detector
WO2017179168A1 (en) * 2016-04-14 2017-10-19 オリンパス株式会社 Imaging device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142551A (en) * 1974-10-08 1976-04-10 Olympus Optical Co RAITOGAIDOSHOMEIKOKAKUKARENZUKEI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142551A (en) * 1974-10-08 1976-04-10 Olympus Optical Co RAITOGAIDOSHOMEIKOKAKUKARENZUKEI

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04284412A (en) * 1991-03-14 1992-10-09 Toshiba Corp Optical fiber bundle
JPH06273678A (en) * 1993-03-18 1994-09-30 Toshiba Corp Diffuse illumination optical system for endoscope
JPH09299326A (en) * 1996-05-17 1997-11-25 Olympus Optical Co Ltd Illuminating system for endoscope
JP2010060298A (en) * 2008-09-01 2010-03-18 Omron Corp Lamp tool unit and object detector
WO2017179168A1 (en) * 2016-04-14 2017-10-19 オリンパス株式会社 Imaging device
JPWO2017179168A1 (en) * 2016-04-14 2019-02-14 オリンパス株式会社 Imaging device
US10602041B2 (en) 2016-04-14 2020-03-24 Olympus Corporation Image capturing device

Similar Documents

Publication Publication Date Title
US4281366A (en) Lighting systems for surgical operations
US4929070A (en) Illumination optical system for endoscopes
EP1416302A3 (en) Backlight unit
ATE19309T1 (en) LIGHTING DEVICE WITH A BUNDLE LIGHT GUIDE.
JPS643616A (en) Lighting optical system for endoscope
KR870007583A (en) Total internal reflection waveguide
CA2057084A1 (en) Light irradiating apparatus having light emitting diode used as light source
JPS5511216A (en) Connecting optical system of light guide
FR2344269A1 (en) Human eye light coagulator appts. - has light conductive cable from laser source connected to housing between mask and lens
JPS57111508A (en) Lighting optical system of microscope for surgical operation
JPS57158823A (en) Method for incidence of light to tapered fiber
KR20200079862A (en) lamp for vehicle
KR870010410A (en) Lens
JPS5949504A (en) Illumination device
JPS57210362A (en) Slit exposure luminaire
JPS5740206A (en) Optical switch
JPS578407A (en) Reflector
JPS5749913A (en) Optical branching and coupling circuit
CN210662719U (en) Lens with side light emitting function
JPS6474412A (en) Optical displacement detector
JPH0491302U (en)
JPS57155524A (en) Optical coupling system
JPS5713409A (en) Optical branching device
JPS57208513A (en) Optical coupler and its manufacture
KR940005969B1 (en) Parallel light induction device