JPS5425747A - Zoom lens system - Google Patents

Zoom lens system

Info

Publication number
JPS5425747A
JPS5425747A JP9098177A JP9098177A JPS5425747A JP S5425747 A JPS5425747 A JP S5425747A JP 9098177 A JP9098177 A JP 9098177A JP 9098177 A JP9098177 A JP 9098177A JP S5425747 A JPS5425747 A JP S5425747A
Authority
JP
Japan
Prior art keywords
zoom lens
lens system
compactness
specifying
constitution
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
JP9098177A
Other languages
English (en)
Other versions
JPS6139650B2 (ja
Inventor
Shuji Ogino
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.)
Minolta Co Ltd
Original Assignee
Minolta Co 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP9098177A priority Critical patent/JPS5425747A/ja
Priority to DE19782828215 priority patent/DE2828215A1/de
Priority to US05/925,982 priority patent/US4172635A/en
Publication of JPS5425747A publication Critical patent/JPS5425747A/ja
Publication of JPS6139650B2 publication Critical patent/JPS6139650B2/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
    • G02B15/143—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
    • G02B15/143105—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 +-+

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP9098177A 1977-07-28 1977-07-28 Zoom lens system Granted JPS5425747A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9098177A JPS5425747A (en) 1977-07-28 1977-07-28 Zoom lens system
DE19782828215 DE2828215A1 (de) 1977-07-28 1978-06-27 Vario-objektiv
US05/925,982 US4172635A (en) 1977-07-28 1978-07-19 Zoom lens system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9098177A JPS5425747A (en) 1977-07-28 1977-07-28 Zoom lens system

Publications (2)

Publication Number Publication Date
JPS5425747A true JPS5425747A (en) 1979-02-26
JPS6139650B2 JPS6139650B2 (ja) 1986-09-04

Family

ID=14013686

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9098177A Granted JPS5425747A (en) 1977-07-28 1977-07-28 Zoom lens system

Country Status (3)

Country Link
US (1) US4172635A (ja)
JP (1) JPS5425747A (ja)
DE (1) DE2828215A1 (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS554022A (en) * 1978-06-23 1980-01-12 Canon Inc Expanding method for variable power range and zoom lens system
JPS57186707A (en) * 1981-05-13 1982-11-17 Canon Inc Telephoto zoom lens
JPS58140710A (ja) * 1982-02-16 1983-08-20 Canon Inc 高変倍ズ−ムレンズ系
JPS58153913A (ja) * 1982-03-08 1983-09-13 Canon Inc ズ−ムレンズ
JPS58214120A (ja) * 1982-06-07 1983-12-13 Nippon Kogaku Kk <Nikon> ズ−ムレンズ
JPS5913211A (ja) * 1982-07-14 1984-01-24 Canon Inc ズ−ムレンズ
US4650291A (en) * 1982-08-13 1987-03-17 Canon Kabushiki Kaisha Zoom lens

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4256381A (en) * 1980-01-31 1981-03-17 Vivitar Corporation Zoom lens
USRE32923E (en) * 1980-01-31 1989-05-16 Vivitar Corporation Zoom lens
JPS5740220A (en) * 1980-08-22 1982-03-05 Nippon Kogaku Kk <Nikon> Zoom lens composed of 3 groups
JPS5768873A (en) * 1980-10-18 1982-04-27 Asahi Optical Co Ltd Variable scale factor copying optical device which is capable of magnification and reduction
US4466708A (en) * 1981-12-28 1984-08-21 Vivitar Corporation Zoom lens
JPS58199313A (ja) * 1982-05-17 1983-11-19 Canon Inc 望遠ズ−ムレンズ
JPS5937518A (ja) * 1982-08-25 1984-03-01 Asahi Optical Co Ltd 広角を包括する高変倍比ズ−ムレンズ
JPH071335B2 (ja) * 1985-05-31 1995-01-11 オリンパス光学工業株式会社 望遠ズ−ムレンズ
GB9226806D0 (en) * 1991-12-25 1993-02-17 Asahi Optical Co Ltd Zoom lens system
JPH11295599A (ja) * 1998-04-13 1999-10-29 Olympus Optical Co Ltd 広角系ズームレンズ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074317A (en) * 1959-12-24 1963-01-22 Bell & Howell Co Zoom lens

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS554022A (en) * 1978-06-23 1980-01-12 Canon Inc Expanding method for variable power range and zoom lens system
JPS57186707A (en) * 1981-05-13 1982-11-17 Canon Inc Telephoto zoom lens
JPS6151296B2 (ja) * 1981-05-13 1986-11-08 Canon Kk
JPS58140710A (ja) * 1982-02-16 1983-08-20 Canon Inc 高変倍ズ−ムレンズ系
JPS58153913A (ja) * 1982-03-08 1983-09-13 Canon Inc ズ−ムレンズ
JPS58214120A (ja) * 1982-06-07 1983-12-13 Nippon Kogaku Kk <Nikon> ズ−ムレンズ
JPS6160416B2 (ja) * 1982-06-07 1986-12-20 Nippon Kogaku Kk
JPS5913211A (ja) * 1982-07-14 1984-01-24 Canon Inc ズ−ムレンズ
US4650291A (en) * 1982-08-13 1987-03-17 Canon Kabushiki Kaisha Zoom lens

Also Published As

Publication number Publication date
DE2828215A1 (de) 1979-02-08
US4172635A (en) 1979-10-30
JPS6139650B2 (ja) 1986-09-04

Similar Documents

Publication Publication Date Title
JPS5425747A (en) Zoom lens system
JPS53105477A (en) 7-glycylprolylamono-4-methylcoumarine
JPS53113032A (en) Immune depresants
JPS5441129A (en) Modified gauss type photographic lens
JPS5419337A (en) Constant and program setting system
JPS5390928A (en) Telephoto lens
JPS5350397A (en) Preparation of 4-hydroxycyclopent-2-ene-1-one
JPS5392789A (en) Selective herbicides
JPS53147051A (en) 1alpha-hydroxy-24-dehydro-vitamin d3 and its preparation
JPS51134140A (en) High-magnification zoom lens capable of macro photographing
JPS53125044A (en) Semiconductor laser scanner
JPS51137412A (en) Optical system for eyefall illumination
JPS5429658A (en) Zooming method
JPS549273A (en) 7-arginylamono-4-methylcoumarin
JPS53124201A (en) 6-ethyl-substituted higher alkane and its use
JPS53108974A (en) 7-arginylamino-4-methylcoumarin
JPS52127327A (en) Foucsing lens system
JPS5392774A (en) 5,6,7,3&#39;,4&#39;,5&#39;-hexahydrooxyflavone
JPS5430135A (en) 4-hydroxy-4-methyl-cyclohexene-2-one-1
JPS543061A (en) Beta-n-carbazolylethylmethacrylate
JPS5291880A (en) 3-acyl-5-fluorouracil
JPS52127328A (en) Focusing lens system
JPS5429629A (en) Operation setting circuit for camera
JPS53147050A (en) 1,4-naphthoquinone-2,3-oxotriphenyl-phosphorane and process for their preparation
JPS5429659A (en) Zooming method