GB1217939A - Endoscopes - Google Patents

Endoscopes

Info

Publication number
GB1217939A
GB1217939A GB52940/68A GB5294068A GB1217939A GB 1217939 A GB1217939 A GB 1217939A GB 52940/68 A GB52940/68 A GB 52940/68A GB 5294068 A GB5294068 A GB 5294068A GB 1217939 A GB1217939 A GB 1217939A
Authority
GB
United Kingdom
Prior art keywords
variable magnification
eyepiece
nov
members
magnification
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
Application number
GB52940/68A
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar GmbH
Ernst Leitz GmbH
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
Priority claimed from DE19671566112 external-priority patent/DE1566112C/en
Application filed by Ernst Leitz Wetzlar GmbH, Ernst Leitz GmbH filed Critical Ernst Leitz Wetzlar GmbH
Publication of GB1217939A publication Critical patent/GB1217939A/en
Expired legal-status Critical Current

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
    • 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
    • G02B23/2423—Optical details of the distal end
    • G02B23/243—Objectives for endoscopes
    • G02B23/2438—Zoom objectives

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Lenses (AREA)
  • Endoscopes (AREA)

Abstract

1,217,939. An endoscope with variable magnification. ERNST LEITZ G.m.b.H. 8 Nov., 1968 [25 Nov., 1967], No. 52940/68. Heading A5R. [Also in Division G2] An endoscope comprises a single optical system of variable magnification wherein the optical components are arranged in a common optical path and a variable magnification eyepiece, Fig. 1, includes a field lens which is adjustable to two fixed positions, one on each side of the eyepiece image plane. In an alternative construction, Fig. 2 (not shown) two eyepiece members are displacable to give a continuous variation in magnification between two end positions. In an alternative embodiment, Fig. 3, an intermediate image forming arrangement is employed which is capable of variable magnification by adjustment of both members of the arrangement. The latter constructions are both suitable for use with a photographic device as both arrangements can be used to fix the position of the exit pupil.
GB52940/68A 1967-11-25 1968-11-08 Endoscopes Expired GB1217939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671566112 DE1566112C (en) 1967-11-25 1967-11-25 Optical system of variable magnification for an endoscope

Publications (1)

Publication Number Publication Date
GB1217939A true GB1217939A (en) 1971-01-06

Family

ID=5677949

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52940/68A Expired GB1217939A (en) 1967-11-25 1968-11-08 Endoscopes

Country Status (3)

Country Link
US (1) US3608998A (en)
FR (1) FR1591690A (en)
GB (1) GB1217939A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145238A (en) * 1983-08-18 1985-03-20 Wolf Gmbh Richard Endoscope optical system having movable lens

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149769A (en) * 1977-09-20 1979-04-17 Richard Wolf Gmbh Endoscope telescopes with tubular connected ocular and objective lens means
JPS54149291A (en) * 1978-05-15 1979-11-22 Olympus Optical Co Hard endoscope provided with variable power system
FR2437194A1 (en) * 1979-02-19 1980-04-25 Hamou Jacques CONTACT ENDOSCOPY AND MICRO ENDOSCOPY
US4277133A (en) * 1979-03-22 1981-07-07 Western Publishing Company Microscope
US4664486A (en) * 1980-03-25 1987-05-12 Landre John K Variable magnification endoscope
US4704007A (en) * 1980-03-25 1987-11-03 Landre John K Variable magnification endoscope
FR2489135A1 (en) * 1980-09-03 1982-03-05 Metallisations Traitements Opt VARIABLE FIELD ENDOSCOPIC SYSTEM FOR DISTAL OR NON-DISTAL OBSERVATION
WO1997037581A2 (en) * 1996-04-10 1997-10-16 Endoscopic Technologies, Inc. Improving visualization during closed-chest surgery
US8422130B2 (en) * 2007-03-28 2013-04-16 Council Of Scientific & Industrial Research Portable magnifying instrument useful for colposcopy
CN101688972B (en) * 2007-06-28 2012-08-29 皇家飞利浦电子股份有限公司 Lens system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1091933A (en) * 1912-08-20 1914-03-31 Optische Anstalt Goerz Ag Telescope with variable magnification.
US1680490A (en) * 1923-06-25 1928-08-14 Reinhold H Wappler Endoscope
AT128590B (en) * 1930-07-12 1932-06-10 Wolf Gmbh Georg Device for examining body cavities, body tubes and the like like
US2171360A (en) * 1935-12-20 1939-08-29 Barr & Stroud Ltd Telescope observation instrument
US2519760A (en) * 1949-02-16 1950-08-22 American Cystoscope Makers Inc Lens system for gastroscopes or the like
US2705490A (en) * 1949-08-05 1955-04-05 Zeiss Carl Microscope for the examination of living tissues in body cavities
US3178994A (en) * 1961-03-31 1965-04-20 John W Lang Borescope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145238A (en) * 1983-08-18 1985-03-20 Wolf Gmbh Richard Endoscope optical system having movable lens

Also Published As

Publication number Publication date
FR1591690A (en) 1970-05-04
US3608998A (en) 1971-09-28

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