JPS6155652B2 - - Google Patents

Info

Publication number
JPS6155652B2
JPS6155652B2 JP57045778A JP4577882A JPS6155652B2 JP S6155652 B2 JPS6155652 B2 JP S6155652B2 JP 57045778 A JP57045778 A JP 57045778A JP 4577882 A JP4577882 A JP 4577882A JP S6155652 B2 JPS6155652 B2 JP S6155652B2
Authority
JP
Japan
Prior art keywords
lens group
lens
zoom
negative
group
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
Application number
JP57045778A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58162922A (ja
Inventor
Kazuo Fujibayashi
Sadatoshi Takahashi
Sadahiko Tsuji
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 JP57045778A priority Critical patent/JPS58162922A/ja
Priority to US06/471,839 priority patent/US4696553A/en
Publication of JPS58162922A publication Critical patent/JPS58162922A/ja
Publication of JPS6155652B2 publication Critical patent/JPS6155652B2/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
    • G02B15/144—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 four groups only
    • G02B15/1441—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 four groups only the first group being positive
    • G02B15/144109—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 four groups only the first group being positive arranged +--+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP57045778A 1982-03-04 1982-03-23 ズ−ムレンズ Granted JPS58162922A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57045778A JPS58162922A (ja) 1982-03-23 1982-03-23 ズ−ムレンズ
US06/471,839 US4696553A (en) 1982-03-04 1983-03-03 Zoom lens having a large zoom ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57045778A JPS58162922A (ja) 1982-03-23 1982-03-23 ズ−ムレンズ

Publications (2)

Publication Number Publication Date
JPS58162922A JPS58162922A (ja) 1983-09-27
JPS6155652B2 true JPS6155652B2 (enrdf_load_stackoverflow) 1986-11-28

Family

ID=12728745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57045778A Granted JPS58162922A (ja) 1982-03-04 1982-03-23 ズ−ムレンズ

Country Status (1)

Country Link
JP (1) JPS58162922A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6375750U (enrdf_load_stackoverflow) * 1986-11-04 1988-05-20

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60230112A (ja) * 1984-04-27 1985-11-15 Asahi Optical Co Ltd 大口径コンパクトズ−ムレンズ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT334109B (de) * 1974-12-20 1976-12-27 Eumig Pankratisches objektiv
JPS6036568B2 (ja) * 1979-07-16 1985-08-21 旭光学工業株式会社 写真用高倍ズ−ムレンズ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6375750U (enrdf_load_stackoverflow) * 1986-11-04 1988-05-20

Also Published As

Publication number Publication date
JPS58162922A (ja) 1983-09-27

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