GB1217939A - Endoscopes - Google Patents
EndoscopesInfo
- 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
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.
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)
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)
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)
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 |
-
1968
- 1968-11-01 US US772522A patent/US3608998A/en not_active Expired - Lifetime
- 1968-11-07 FR FR1591690D patent/FR1591690A/fr not_active Expired
- 1968-11-08 GB GB52940/68A patent/GB1217939A/en not_active Expired
Cited By (1)
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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