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JPS55163511A - 2-group constitution zoom lens - Google Patents

2-group constitution zoom lens

Info

Publication number
JPS55163511A
JPS55163511A JP7111279A JP7111279A JPS55163511A JP S55163511 A JPS55163511 A JP S55163511A JP 7111279 A JP7111279 A JP 7111279A JP 7111279 A JP7111279 A JP 7111279A JP S55163511 A JPS55163511 A JP S55163511A
Authority
JP
Japan
Prior art keywords
lens
group
positive
lens group
burden
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
JP7111279A
Other languages
English (en)
Other versions
JPS6144285B2 (ja
Inventor
Satoshi Mogami
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.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
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 Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP7111279A priority Critical patent/JPS55163511A/ja
Priority to US06/153,788 priority patent/US4380375A/en
Priority to DE3020934A priority patent/DE3020934C2/de
Publication of JPS55163511A publication Critical patent/JPS55163511A/ja
Publication of JPS6144285B2 publication Critical patent/JPS6144285B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/04—Reversed telephoto objectives
    • 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
    • G02B15/142—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 two groups only
    • G02B15/1425—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 two groups only the first group being negative

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP7111279A 1979-06-08 1979-06-08 2-group constitution zoom lens Granted JPS55163511A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7111279A JPS55163511A (en) 1979-06-08 1979-06-08 2-group constitution zoom lens
US06/153,788 US4380375A (en) 1979-06-08 1980-05-27 Wide angle zoom lens of two-group construction
DE3020934A DE3020934C2 (de) 1979-06-08 1980-06-03 Weitwinkel-Varioobjektiv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7111279A JPS55163511A (en) 1979-06-08 1979-06-08 2-group constitution zoom lens

Publications (2)

Publication Number Publication Date
JPS55163511A true JPS55163511A (en) 1980-12-19
JPS6144285B2 JPS6144285B2 (ja) 1986-10-02

Family

ID=13451139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7111279A Granted JPS55163511A (en) 1979-06-08 1979-06-08 2-group constitution zoom lens

Country Status (3)

Country Link
US (1) US4380375A (ja)
JP (1) JPS55163511A (ja)
DE (1) DE3020934C2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833212A (ja) * 1981-08-21 1983-02-26 Canon Inc 大口径広角ズ−ムレンズ
JPS5913212A (ja) * 1982-07-14 1984-01-24 Canon Inc ズ−ムレンズ

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57104108A (en) * 1980-12-20 1982-06-29 Asahi Optical Co Ltd Back diaphragm type zoom lens
JPS59142514A (ja) * 1983-02-02 1984-08-15 Olympus Optical Co Ltd 明るいズ−ムレンズ
US4770509A (en) * 1984-09-28 1988-09-13 Nippon Kogaku K. K. Zoom lens comprising two groups of lenses
GB2244819B (en) * 1990-04-17 1994-08-03 Asahi Optical Co Ltd Zoom lens system
JP5009571B2 (ja) * 2006-08-28 2012-08-22 富士フイルム株式会社 ズームレンズ
TWI317819B (en) * 2006-11-02 2009-12-01 Young Optics Inc Zoom lens
CN114815197B (zh) * 2022-06-29 2022-10-21 江西晶超光学有限公司 光学系统、镜头模组和电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5183543A (ja) * 1975-01-18 1976-07-22 Asahi Optical Co Ltd
JPS5226236A (en) * 1975-08-22 1977-02-26 Canon Inc Zoom lens system
JPS5232342A (en) * 1975-09-08 1977-03-11 Canon Inc Variable magnification optical unit
JPS53132360A (en) * 1977-04-25 1978-11-18 Canon Inc Wide angle zoom lens of small size

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6035650B2 (ja) * 1976-05-08 1985-08-15 株式会社ニコン コンパクトな広角ズ−ムレンズ
JPS6046688B2 (ja) * 1976-11-11 1985-10-17 富士写真光機株式会社 ズ−ムレンズ
JPS53135658A (en) * 1977-04-30 1978-11-27 Asahi Optical Co Ltd Zoom lens including ultraawide lens
JPS54114236A (en) * 1978-02-24 1979-09-06 Minolta Camera Co Ltd Zoom lens system
JPS5536833A (en) * 1978-09-08 1980-03-14 Nippon Kogaku Kk <Nikon> Wide angle zoom lens system of closest focusing distance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5183543A (ja) * 1975-01-18 1976-07-22 Asahi Optical Co Ltd
JPS5226236A (en) * 1975-08-22 1977-02-26 Canon Inc Zoom lens system
JPS5232342A (en) * 1975-09-08 1977-03-11 Canon Inc Variable magnification optical unit
JPS53132360A (en) * 1977-04-25 1978-11-18 Canon Inc Wide angle zoom lens of small size

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833212A (ja) * 1981-08-21 1983-02-26 Canon Inc 大口径広角ズ−ムレンズ
JPS5913212A (ja) * 1982-07-14 1984-01-24 Canon Inc ズ−ムレンズ

Also Published As

Publication number Publication date
DE3020934A1 (de) 1980-12-11
JPS6144285B2 (ja) 1986-10-02
DE3020934C2 (de) 1982-12-09
US4380375A (en) 1983-04-19

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