JPS59101618A - 変倍光学系 - Google Patents

変倍光学系

Info

Publication number
JPS59101618A
JPS59101618A JP57210909A JP21090982A JPS59101618A JP S59101618 A JPS59101618 A JP S59101618A JP 57210909 A JP57210909 A JP 57210909A JP 21090982 A JP21090982 A JP 21090982A JP S59101618 A JPS59101618 A JP S59101618A
Authority
JP
Japan
Prior art keywords
lens group
optical system
refractive power
lens
lens groups
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
JP57210909A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0434721B2 (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 JP57210909A priority Critical patent/JPS59101618A/ja
Priority to US06/556,705 priority patent/US4836661A/en
Publication of JPS59101618A publication Critical patent/JPS59101618A/ja
Publication of JPH0434721B2 publication Critical patent/JPH0434721B2/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
    • G02B15/144113—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)
JP57210909A 1982-12-01 1982-12-01 変倍光学系 Granted JPS59101618A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57210909A JPS59101618A (ja) 1982-12-01 1982-12-01 変倍光学系
US06/556,705 US4836661A (en) 1982-12-01 1983-11-30 Optical system of variable magnification power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57210909A JPS59101618A (ja) 1982-12-01 1982-12-01 変倍光学系

Publications (2)

Publication Number Publication Date
JPS59101618A true JPS59101618A (ja) 1984-06-12
JPH0434721B2 JPH0434721B2 (enrdf_load_stackoverflow) 1992-06-08

Family

ID=16597070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57210909A Granted JPS59101618A (ja) 1982-12-01 1982-12-01 変倍光学系

Country Status (1)

Country Link
JP (1) JPS59101618A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60254013A (ja) * 1984-05-30 1985-12-14 Canon Inc 変倍光学系
JPS6180213A (ja) * 1984-09-28 1986-04-23 Canon Inc 変倍光学系
JPS6187116A (ja) * 1984-09-28 1986-05-02 Canon Inc 変倍光学系
JPS61156213A (ja) * 1984-12-28 1986-07-15 Canon Inc ズ−ムレンズ
DE3702351A1 (de) * 1986-01-28 1987-07-30 Canon Kk Varioobjektiv mit einem objektivglied von veraenderlicher vergroesserung
JPH02111909A (ja) * 1988-10-21 1990-04-24 Hitachi Ltd 投写形テレビ受像機用レンズ
WO2008102894A1 (ja) * 2007-02-21 2008-08-28 Nikon Corporation 変倍アフォーカル光学系

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60254013A (ja) * 1984-05-30 1985-12-14 Canon Inc 変倍光学系
JPS6180213A (ja) * 1984-09-28 1986-04-23 Canon Inc 変倍光学系
JPS6187116A (ja) * 1984-09-28 1986-05-02 Canon Inc 変倍光学系
JPS61156213A (ja) * 1984-12-28 1986-07-15 Canon Inc ズ−ムレンズ
DE3702351A1 (de) * 1986-01-28 1987-07-30 Canon Kk Varioobjektiv mit einem objektivglied von veraenderlicher vergroesserung
DE3702351C2 (enrdf_load_stackoverflow) * 1986-01-28 1993-06-24 Canon K.K., Tokio/Tokyo, Jp
JPH02111909A (ja) * 1988-10-21 1990-04-24 Hitachi Ltd 投写形テレビ受像機用レンズ
WO2008102894A1 (ja) * 2007-02-21 2008-08-28 Nikon Corporation 変倍アフォーカル光学系

Also Published As

Publication number Publication date
JPH0434721B2 (enrdf_load_stackoverflow) 1992-06-08

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