Nothing Special   »   [go: up one dir, main page]

JPS56120908A - Distance detecting device for endoscope - Google Patents

Distance detecting device for endoscope

Info

Publication number
JPS56120908A
JPS56120908A JP2477280A JP2477280A JPS56120908A JP S56120908 A JPS56120908 A JP S56120908A JP 2477280 A JP2477280 A JP 2477280A JP 2477280 A JP2477280 A JP 2477280A JP S56120908 A JPS56120908 A JP S56120908A
Authority
JP
Japan
Prior art keywords
luminous flux
subject
distance
emitted
endoscope
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
JP2477280A
Other languages
English (en)
Inventor
Saburo Numata
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.)
Fujinon Corp
Original Assignee
Fuji Photo 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 Fuji Photo Optical Co Ltd filed Critical Fuji Photo Optical Co Ltd
Priority to JP2477280A priority Critical patent/JPS56120908A/ja
Priority to DE3107323A priority patent/DE3107323C2/de
Priority to FR8103931A priority patent/FR2477291A1/fr
Priority to US06/238,747 priority patent/US4389565A/en
Publication of JPS56120908A publication Critical patent/JPS56120908A/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids
    • 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
    • A61B1/00188—Optical arrangements with focusing or zooming features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors
    • 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
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Electromagnetism (AREA)
  • Remote Sensing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Astronomy & Astrophysics (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)
JP2477280A 1980-02-29 1980-02-29 Distance detecting device for endoscope Pending JPS56120908A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2477280A JPS56120908A (en) 1980-02-29 1980-02-29 Distance detecting device for endoscope
DE3107323A DE3107323C2 (de) 1980-02-29 1981-02-26 Vorrichtung zur automatischen Fokussierung für optische Geräte
FR8103931A FR2477291A1 (fr) 1980-02-29 1981-02-27 Dispositif de mise au point automatique d'un appareil optique
US06/238,747 US4389565A (en) 1980-02-29 1981-02-27 Automatic focus controlling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2477280A JPS56120908A (en) 1980-02-29 1980-02-29 Distance detecting device for endoscope

Publications (1)

Publication Number Publication Date
JPS56120908A true JPS56120908A (en) 1981-09-22

Family

ID=12147453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2477280A Pending JPS56120908A (en) 1980-02-29 1980-02-29 Distance detecting device for endoscope

Country Status (4)

Country Link
US (1) US4389565A (ja)
JP (1) JPS56120908A (ja)
DE (1) DE3107323C2 (ja)
FR (1) FR2477291A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091805B1 (en) * 1982-04-08 1989-07-26 Olympus Optical Co., Ltd. Endoscope focus state detectors
EP0096570B1 (en) * 1982-06-05 1988-08-24 Olympus Optical Co., Ltd. An optical system focus-state detector
DE3732266A1 (de) * 1987-09-25 1989-04-13 Gmt Medizinische Technik Gmbh Verfahren und vorrichtung zur abbildung eines knocheninnenraumes
JPH01123109A (ja) * 1987-11-07 1989-05-16 Canon Inc 測距装置
US5055664A (en) * 1990-08-06 1991-10-08 Eaton Corporation Optical distance measuring system using a position sensitive device and a ramp generator driven light source
US7852371B2 (en) * 2004-04-19 2010-12-14 Gyrus Acmi, Inc. Autoclavable video camera for an endoscope
US20100272318A1 (en) * 2005-05-13 2010-10-28 G.I. View Ltd Endoscopic measurement techniques
US8233075B2 (en) 2007-05-24 2012-07-31 Gyrus Acmi, Inc. User-aided auto-focus
EP2055224A1 (en) * 2007-10-31 2009-05-06 Orangedental GmbH & Co. KG Autofocus method and system therefor
DE102009009165B4 (de) * 2009-02-16 2018-12-27 Siemens Healthcare Gmbh Verfahren und Vorrichtung zur Bestimmung eines von einer Endoskopiekapsel in einem Patienten zurückgelegten Weges
DE102009017819A1 (de) * 2009-04-20 2010-10-21 DüRR DENTAL AG Dentale oder medizinische Kamera

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032934A (en) * 1974-12-26 1977-06-28 Hendrickson Kenneth L Automatic focusing system
DE2708507A1 (de) * 1977-02-26 1978-08-31 Leitz Ernst Gmbh Bilduebertragungseinrichtung zur untersuchung von unzugaenglichen partien eines objektes
JPS55166609A (en) * 1979-06-12 1980-12-25 Olympus Optical Co Ltd Method of focusing of optical system having lighting device

Also Published As

Publication number Publication date
FR2477291A1 (fr) 1981-09-04
US4389565A (en) 1983-06-21
DE3107323A1 (de) 1981-12-24
DE3107323C2 (de) 1983-10-13
FR2477291B1 (ja) 1984-04-13

Similar Documents

Publication Publication Date Title
JPS5714817A (en) Light source device for optical apparatus
JPS5336980A (en) Light source for endscope
DE3261094D1 (en) Endoscope apparatus
JPS56120908A (en) Distance detecting device for endoscope
JPS55166609A (en) Method of focusing of optical system having lighting device
DE3471438D1 (en) Ophthalmic apparatus and measuring device for examining the eye fundus
GB1557167A (en) Method and apparatus for detecting yarn on rods and severing the yarn
JPS5764713A (en) Automatic focus controller
JPS564004A (en) System for detecting minute defects of body
JPS51144254A (en) Focal distance measurement method of optical lens and its device
JPS5454056A (en) Photoelectric detector
JPS5726704A (en) Measuring instrument for three-dimensional shape
JPS5734511A (en) Photographing lens device having focusing function
JPS55558A (en) Non-mydriasis type fundus camera
FR2381304A1 (fr) Appareil et procede pour detecter une crique a la surface d'un materiau porte a haute temperature
JPS55124008A (en) Defect inspecting apparatus
WO2003015620A3 (en) Hand held tonometer with optical arrangement for indicating critical distance from an eye
SU568877A1 (ru) Устройство дл денситометрических и/или геометрических исследований радиографических изображений
JPS54149421A (en) Image pickup system
JPS5611426A (en) Image monitor unit
JPS5435764A (en) Distance measuring apparatus
JPS55163506A (en) Automatic focus detector
JPS53127717A (en) X-ray observation and photographic device
JPS5397818A (en) Measuring system for projecting magnification
JPS57148202A (en) Optical instrument capable of comparing and measuring configuration of material to be checked