GB2301456B - Three group zoom lens system - Google Patents

Three group zoom lens system

Info

Publication number
GB2301456B
GB2301456B GB9612866A GB9612866A GB2301456B GB 2301456 B GB2301456 B GB 2301456B GB 9612866 A GB9612866 A GB 9612866A GB 9612866 A GB9612866 A GB 9612866A GB 2301456 B GB2301456 B GB 2301456B
Authority
GB
United Kingdom
Prior art keywords
zoom lens
lens system
group zoom
group
zoom
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 - Lifetime
Application number
GB9612866A
Other versions
GB9612866D0 (en
GB2301456A (en
Inventor
Yong-Kyu Yoon
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.)
Hanwha Aerospace Co Ltd
Original Assignee
Samsung Aerospace Industries 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 Samsung Aerospace Industries Ltd filed Critical Samsung Aerospace Industries Ltd
Priority claimed from GB9313297A external-priority patent/GB2280278A/en
Publication of GB9612866D0 publication Critical patent/GB9612866D0/en
Publication of GB2301456A publication Critical patent/GB2301456A/en
Application granted granted Critical
Publication of GB2301456B publication Critical patent/GB2301456B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G02B15/143103—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 ++-
GB9612866A 1993-06-28 1993-06-28 Three group zoom lens system Expired - Lifetime GB2301456B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9313297A GB2280278A (en) 1993-06-28 1993-06-28 Three group zoom lens

Publications (3)

Publication Number Publication Date
GB9612866D0 GB9612866D0 (en) 1996-08-21
GB2301456A GB2301456A (en) 1996-12-04
GB2301456B true GB2301456B (en) 1997-08-06

Family

ID=10737914

Family Applications (5)

Application Number Title Priority Date Filing Date
GB9612851A Expired - Lifetime GB2301452B (en) 1993-06-28 1993-06-28 Three group zoom lens system
GB9612865A Expired - Lifetime GB2301455B (en) 1993-06-28 1993-06-28 Three group zoom lens system
GB9612866A Expired - Lifetime GB2301456B (en) 1993-06-28 1993-06-28 Three group zoom lens system
GB9612852A Expired - Lifetime GB2301453B (en) 1993-06-28 1993-06-28 Three group zoom lens system
GB9612853A Expired - Lifetime GB2301454B (en) 1993-06-28 1993-06-28 Three group zoom lens system

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB9612851A Expired - Lifetime GB2301452B (en) 1993-06-28 1993-06-28 Three group zoom lens system
GB9612865A Expired - Lifetime GB2301455B (en) 1993-06-28 1993-06-28 Three group zoom lens system

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB9612852A Expired - Lifetime GB2301453B (en) 1993-06-28 1993-06-28 Three group zoom lens system
GB9612853A Expired - Lifetime GB2301454B (en) 1993-06-28 1993-06-28 Three group zoom lens system

Country Status (1)

Country Link
GB (5) GB2301452B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138493A (en) * 1990-03-07 1992-08-11 Minolta Camera Co., Ltd. Zoom lens system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983027A (en) * 1988-03-31 1991-01-08 Minolta Camera Kabushiki Kaisha Compact zoom lens system with a high zoom ratio
JPH0331809A (en) * 1989-06-29 1991-02-12 Olympus Optical Co Ltd Zoom lens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138493A (en) * 1990-03-07 1992-08-11 Minolta Camera Co., Ltd. Zoom lens system

Also Published As

Publication number Publication date
GB9612866D0 (en) 1996-08-21
GB2301454A (en) 1996-12-04
GB2301452B (en) 1997-08-06
GB2301452A (en) 1996-12-04
GB2301455A (en) 1996-12-04
GB2301453A (en) 1996-12-04
GB2301453B (en) 1997-08-06
GB2301454B (en) 1997-08-06
GB9612852D0 (en) 1996-08-21
GB9612865D0 (en) 1996-08-21
GB9612851D0 (en) 1996-08-21
GB2301455B (en) 1997-08-06
GB9612853D0 (en) 1996-08-21
GB2301456A (en) 1996-12-04

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20090813 AND 20090819

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20101111 AND 20101117

PE20 Patent expired after termination of 20 years

Expiry date: 20130627