GB2002137A – Wide angle zoom lens having a high zoom variation ratio
– Google Patents
GB2002137A – Wide angle zoom lens having a high zoom variation ratio
– Google Patents
Wide angle zoom lens having a high zoom variation ratio
Info
Publication number
GB2002137A
GB2002137A
GB7831134A
GB7831134A
GB2002137A
GB 2002137 A
GB2002137 A
GB 2002137A
GB 7831134 A
GB7831134 A
GB 7831134A
GB 7831134 A
GB7831134 A
GB 7831134A
GB 2002137 A
GB2002137 A
GB 2002137A
Authority
GB
United Kingdom
Prior art keywords
wide angle
variation ratio
zoom lens
zoom
high zoom
Prior art date
1977-07-30
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.)
Granted
Application number
GB7831134A
Other versions
GB2002137B
(en
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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.)
1977-07-30
Filing date
1978-07-26
Publication date
1979-02-14
1978-07-26
Application filed by Asahi Kogaku Kogyo Co Ltd
filed
Critical
Asahi Kogaku Kogyo Co Ltd
1979-02-14
Publication of GB2002137A
publication
Critical
patent/GB2002137A/en
1982-01-27
Application granted
granted
Critical
1982-01-27
Publication of GB2002137B
publication
Critical
patent/GB2002137B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G02—OPTICS
G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
G02B15/00—Optical objectives with means for varying the magnification
G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
G02B15/1431—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive
G02B15/143105—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive arranged +-+
GB7831134A
1977-07-30
1978-07-26
Wide angle zoom lens having a high zoom variation ratio
Expired
GB2002137B
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP52091846A
JPS5832684B2
(en)
1977-07-30
1977-07-30
Wide-angle zoom lens system with high magnification
Publications (2)
Publication Number
Publication Date
GB2002137A
true
GB2002137A
(en)
1979-02-14
GB2002137B
GB2002137B
(en)
1982-01-27
Family
ID=14037928
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7831134A
Expired
GB2002137B
(en)
1977-07-30
1978-07-26
Wide angle zoom lens having a high zoom variation ratio
Country Status (4)
Country
Link
US
(1)
US4240700A
(en)
JP
(1)
JPS5832684B2
(en)
DE
(1)
DE2833308C2
(en)
GB
(1)
GB2002137B
(en)
Families Citing this family (40)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5528051A
(en)
*
1978-08-18
1980-02-28
Canon Inc
Zoom lens
JPS55156912A
(en)
*
1979-05-16
1980-12-06
Asahi Optical Co Ltd
High variable power zoom lens including wide angle
JPS575012A
(en)
*
1980-06-12
1982-01-11
Minolta Camera Co Ltd
Four component zoom lens system
JPS5729024A
(en)
*
1980-07-28
1982-02-16
Minolta Camera Co Ltd
Zoom lens system having lens group for focusing behind the system
US4634236A
(en)
*
1980-06-12
1987-01-06
Minolta Camera Kabushiki Kaisha
Compact zoom lens system of a relatively high zoom ratio capable of providing a wide field angle
JPS5740220A
(en)
*
1980-08-22
1982-03-05
Nippon Kogaku Kk
Zoom lens composed of 3 groups
JPS57161804A
(en)
*
1981-03-31
1982-10-05
Tokinaa Kogaku Kk
Zoom lens system
JPS57192918A
(en)
*
1981-05-25
1982-11-27
Konishiroku Photo Ind Co Ltd
Compact zoom lens
JPS57195213A
(en)
*
1981-05-26
1982-11-30
Konishiroku Photo Ind Co Ltd
Compact zoom lens
JPS5878114A
(en)
*
1981-11-04
1983-05-11
Nippon Kogaku Kk
Zoom lens containing wide view angle
JPS5888717A
(en)
*
1981-11-24
1983-05-26
Olympus Optical Co Ltd
Zoom lens
JPS5893022A
(en)
*
1981-11-30
1983-06-02
Nippon Kogaku Kk
Zoom lens
JPS5898720A
(en)
*
1981-12-08
1983-06-11
Olympus Optical Co Ltd
Compact 4-group type zoom lens
JPS58116509A
(en)
*
1981-12-29
1983-07-11
Canon Inc
Zoom lens
JPS58137815A
(en)
*
1982-02-10
1983-08-16
Olympus Optical Co Ltd
Zoom lens
JPS58145910A
(en)
*
1982-02-25
1983-08-31
Canon Inc
Zoom lens
JPS58150926A
(en)
*
1982-03-04
1983-09-07
Canon Inc
Zoom lens
JPS58162923A
(en)
*
1982-03-23
1983-09-27
Canon Inc
Zoom lens
JPS58160913A
(en)
*
1982-03-19
1983-09-24
Canon Inc
Zoom lens having high variable power
JPS58199313A
(en)
*
1982-05-17
1983-11-19
Canon Inc
Telephoto zoom lens
JPS58224323A
(en)
*
1982-06-23
1983-12-26
Asahi Optical Co Ltd
Zoom lens
JPS5913211A
(en)
*
1982-07-14
1984-01-24
Canon Inc
Zoom lens
JPS5937518A
(en)
*
1982-08-25
1984-03-01
Asahi Optical Co Ltd
Zoom lens with high variable power ratio covering wide angle
JPS6021019A
(en)
*
1983-07-14
1985-02-02
Canon Inc
Zoom lens
JPS6021018A
(en)
*
1983-07-14
1985-02-02
Canon Inc
Zoom lens system
JPS60225110A
(en)
*
1984-04-23
1985-11-09
Sigma:Kk
Telephoto zoom lens
JPS61284721A
(en)
*
1985-06-12
1986-12-15
Tokinaa Kogaku Kk
Telephoto zoom lens
JPS61258220A
(en)
*
1986-05-23
1986-11-15
Konishiroku Photo Ind Co Ltd
Compact zoom lens
DE3844239C2
(en)
*
1987-12-29
1996-10-17
Asahi Optical Co Ltd
Zoom lens
US5028125A
(en)
*
1989-04-05
1991-07-02
Ricoh Company, Ltd.
Zoom finder of real image type
JP2756350B2
(en)
*
1990-06-22
1998-05-25
キヤノン株式会社
Projection zoom lens
JPH05203875A
(en)
*
1992-01-29
1993-08-13
Minolta Camera Co Ltd
Variable power lens
CN1071459C
(en)
*
1994-02-04
2001-09-19
旭光学工业株式会社
Real-image type changeable focal power viewer
JP3394624B2
(en)
*
1995-02-17
2003-04-07
オリンパス光学工業株式会社
Zoom lens
JP3584107B2
(en)
*
1996-01-06
2004-11-04
キヤノン株式会社
Zoom lens
JP2000347102A
(en)
*
1999-06-04
2000-12-15
Konica Corp
Zoom lens
DE19943015A1
(en)
*
1999-09-09
2001-03-15
Zeiss Carl Jena Gmbh
Zoom lens
JP3619178B2
(en)
2001-09-28
2005-02-09
キヤノン株式会社
Zoom lens and optical apparatus having the same
JP4857576B2
(en)
*
2005-03-23
2012-01-18
株式会社ニコン
Zoom lens
JP5257734B2
(en)
*
2007-11-22
2013-08-07
株式会社ニコン
Zoom lens, optical apparatus including the same, and imaging method
Family Cites Families (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1299903B
(en)
*
1963-08-27
1969-07-24
Nippon Kogaku Kk
Pancratic lens
US3549242A
(en)
*
1966-10-27
1970-12-22
Nippon Kogaku Kk
Zooming lens of extremely high zooming ratio
JPS4923912B1
(en)
*
1970-12-15
1974-06-19
JPS5113663B2
(en)
*
1972-07-20
1976-05-01
US3840290A
(en)
*
1973-08-13
1974-10-08
Us Navy
Zoom lens system having four movable members
US3975089A
(en)
*
1974-04-19
1976-08-17
Ponder & Best, Inc.
Zoom lens
US3920315A
(en)
*
1974-10-15
1975-11-18
Bell & Howell Co
Zoom projection lens
JPS5832364B2
(en)
*
1974-12-10
1983-07-12
ミノルタ株式会社
Shikinkiyori Satsueino Kanounaz-Murrenskei
1977
1977-07-30
JP
JP52091846A
patent/JPS5832684B2/en
not_active
Expired
1978
1978-07-26
GB
GB7831134A
patent/GB2002137B/en
not_active
Expired
1978-07-28
US
US05/929,763
patent/US4240700A/en
not_active
Expired – Lifetime
1978-07-28
DE
DE2833308A
patent/DE2833308C2/en
not_active
Expired
Also Published As
Publication number
Publication date
DE2833308A1
(en)
1979-02-01
US4240700A
(en)
1980-12-23
DE2833308C2
(en)
1985-11-07
JPS5430855A
(en)
1979-03-07
GB2002137B
(en)
1982-01-27
JPS5832684B2
(en)
1983-07-14
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1982-01-27
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Large aperture ratio zoom lens
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(en)
1982-07-12
Zoom lens
JPS5344039A
(en)
1978-04-20
High magnification zoom lens including wide angle one
Legal Events
Date
Code
Title
Description
1988-07-06
746
Register noted ‘licences of right’ (sect. 46/1977)
1998-08-19
PE20
Patent expired after termination of 20 years
Effective date:
19980725
