JPS58111013A - 小型の広角ズ−ムレンズ - Google Patents

小型の広角ズ−ムレンズ

Info

Publication number
JPS58111013A
JPS58111013A JP56215482A JP21548281A JPS58111013A JP S58111013 A JPS58111013 A JP S58111013A JP 56215482 A JP56215482 A JP 56215482A JP 21548281 A JP21548281 A JP 21548281A JP S58111013 A JPS58111013 A JP S58111013A
Authority
JP
Japan
Prior art keywords
lens
zoom
group
lens group
zoom lens
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.)
Granted
Application number
JP56215482A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6161653B2 (enrdf_load_stackoverflow
Inventor
Keiji Ikemori
敬二 池森
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP56215482A priority Critical patent/JPS58111013A/ja
Publication of JPS58111013A publication Critical patent/JPS58111013A/ja
Priority to US06/733,856 priority patent/US4647160A/en
Publication of JPS6161653B2 publication Critical patent/JPS6161653B2/ja
Granted 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
    • G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/177—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
    • 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
    • G02B15/1435—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 negative
    • G02B15/143503—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 negative arranged -+-

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)
JP56215482A 1981-12-24 1981-12-24 小型の広角ズ−ムレンズ Granted JPS58111013A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56215482A JPS58111013A (ja) 1981-12-24 1981-12-24 小型の広角ズ−ムレンズ
US06/733,856 US4647160A (en) 1981-12-24 1985-05-13 Small-sized wide angle zoom objective

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56215482A JPS58111013A (ja) 1981-12-24 1981-12-24 小型の広角ズ−ムレンズ

Publications (2)

Publication Number Publication Date
JPS58111013A true JPS58111013A (ja) 1983-07-01
JPS6161653B2 JPS6161653B2 (enrdf_load_stackoverflow) 1986-12-26

Family

ID=16673107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56215482A Granted JPS58111013A (ja) 1981-12-24 1981-12-24 小型の広角ズ−ムレンズ

Country Status (1)

Country Link
JP (1) JPS58111013A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61167919A (ja) * 1985-01-21 1986-07-29 Canon Inc 変倍フアインダ−
DE3610472A1 (de) * 1985-03-27 1986-10-09 Ricoh Co., Ltd., Tokio/Tokyo Klein-zoomobjektiv
JPS61240217A (ja) * 1985-04-17 1986-10-25 Asahi Optical Co Ltd コンパクトな広角ズ−ムレンズ
US4730907A (en) * 1983-12-05 1988-03-15 Olympus Optical Co., Ltd. Compact zoom lens system
JPS63210907A (ja) * 1987-02-27 1988-09-01 Asahi Optical Co Ltd コンパクトで明るい広角ズ−ムレンズ
JPH01284819A (ja) * 1988-05-12 1989-11-16 Minolta Camera Co Ltd ズームレンズ
JP2002236254A (ja) * 2001-02-09 2002-08-23 Sigma Corp ズームレンズ

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226236A (en) * 1975-08-22 1977-02-26 Canon Inc Zoom lens system
JPS52109930A (en) * 1976-03-11 1977-09-14 Nippon Chemical Ind Rear conversion lens
JPS53132360A (en) * 1977-04-25 1978-11-18 Canon Inc Wide angle zoom lens of small size
JPS5478148A (en) * 1977-12-02 1979-06-22 Asahi Optical Co Ltd Zoom lens of small distortion aberration
JPS5478149A (en) * 1977-12-02 1979-06-22 Asahi Optical Co Ltd Zoom lens of small distortion aberration for wide angle
JPS559550A (en) * 1978-07-06 1980-01-23 Canon Inc Zoom lens system
JPS56107210A (en) * 1980-01-31 1981-08-26 Nippon Kogaku Kk <Nikon> Lens system permitting short-distance photographing
JPS575023A (en) * 1980-06-11 1982-01-11 Minolta Camera Co Ltd Zoom lens system
JPS5897016A (ja) * 1981-12-07 1983-06-09 Mamiya Koki Kk 広角ズ−ムレンズ

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5226236A (en) * 1975-08-22 1977-02-26 Canon Inc Zoom lens system
JPS52109930A (en) * 1976-03-11 1977-09-14 Nippon Chemical Ind Rear conversion lens
JPS53132360A (en) * 1977-04-25 1978-11-18 Canon Inc Wide angle zoom lens of small size
JPS5478148A (en) * 1977-12-02 1979-06-22 Asahi Optical Co Ltd Zoom lens of small distortion aberration
JPS5478149A (en) * 1977-12-02 1979-06-22 Asahi Optical Co Ltd Zoom lens of small distortion aberration for wide angle
JPS559550A (en) * 1978-07-06 1980-01-23 Canon Inc Zoom lens system
JPS56107210A (en) * 1980-01-31 1981-08-26 Nippon Kogaku Kk <Nikon> Lens system permitting short-distance photographing
JPS575023A (en) * 1980-06-11 1982-01-11 Minolta Camera Co Ltd Zoom lens system
JPS5897016A (ja) * 1981-12-07 1983-06-09 Mamiya Koki Kk 広角ズ−ムレンズ

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4730907A (en) * 1983-12-05 1988-03-15 Olympus Optical Co., Ltd. Compact zoom lens system
JPS61167919A (ja) * 1985-01-21 1986-07-29 Canon Inc 変倍フアインダ−
DE3610472A1 (de) * 1985-03-27 1986-10-09 Ricoh Co., Ltd., Tokio/Tokyo Klein-zoomobjektiv
JPS61240217A (ja) * 1985-04-17 1986-10-25 Asahi Optical Co Ltd コンパクトな広角ズ−ムレンズ
JPS63210907A (ja) * 1987-02-27 1988-09-01 Asahi Optical Co Ltd コンパクトで明るい広角ズ−ムレンズ
DE3806161A1 (de) * 1987-02-27 1988-09-08 Asahi Optical Co Ltd Kompaktes und lichtstarkes weitwinkel-zoom-linsensystem
JPH01284819A (ja) * 1988-05-12 1989-11-16 Minolta Camera Co Ltd ズームレンズ
JP2002236254A (ja) * 2001-02-09 2002-08-23 Sigma Corp ズームレンズ

Also Published As

Publication number Publication date
JPS6161653B2 (enrdf_load_stackoverflow) 1986-12-26

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