JPS6360886B2 - - Google Patents

Info

Publication number
JPS6360886B2
JPS6360886B2 JP58075834A JP7583483A JPS6360886B2 JP S6360886 B2 JPS6360886 B2 JP S6360886B2 JP 58075834 A JP58075834 A JP 58075834A JP 7583483 A JP7583483 A JP 7583483A JP S6360886 B2 JPS6360886 B2 JP S6360886B2
Authority
JP
Japan
Prior art keywords
lens
lens group
positive
negative
curvature
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
JP58075834A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59201013A (ja
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 filed Critical
Priority to JP58075834A priority Critical patent/JPS59201013A/ja
Priority to US06/603,767 priority patent/US4585314A/en
Publication of JPS59201013A publication Critical patent/JPS59201013A/ja
Publication of JPS6360886B2 publication Critical patent/JPS6360886B2/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
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP58075834A 1983-04-28 1983-04-28 投影レンズ Granted JPS59201013A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP58075834A JPS59201013A (ja) 1983-04-28 1983-04-28 投影レンズ
US06/603,767 US4585314A (en) 1983-04-28 1984-04-25 Projection lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58075834A JPS59201013A (ja) 1983-04-28 1983-04-28 投影レンズ

Publications (2)

Publication Number Publication Date
JPS59201013A JPS59201013A (ja) 1984-11-14
JPS6360886B2 true JPS6360886B2 (https=) 1988-11-25

Family

ID=13587611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58075834A Granted JPS59201013A (ja) 1983-04-28 1983-04-28 投影レンズ

Country Status (2)

Country Link
US (1) US4585314A (https=)
JP (1) JPS59201013A (https=)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0658454B2 (ja) * 1985-07-03 1994-08-03 キヤノン株式会社 変倍フアインダ−
US4993814A (en) * 1988-01-18 1991-02-19 Minolta Camera Kabushiki Kaisha Zoom lens system
JPH0588084A (ja) * 1991-09-30 1993-04-09 Nikon Corp ２群構成ズームレンズ
US5875059A (en) * 1997-02-19 1999-02-23 Eastman Kodak Company Variable focal length lens system having a divergent front lens unit
US6747818B2 (en) * 2000-09-06 2004-06-08 Ricoh Company Ltd. Image forming lens, image forming lens unit, original document reading module, apparatus and method, and image information processing apparatus
JP2003202495A (ja) * 2002-01-07 2003-07-18 Canon Inc 画像読取装置
US7218444B2 (en) * 2004-05-03 2007-05-15 Raytheon Company Dual-band, dual-focal-length, relayed refractive imager
JP6011168B2 (ja) * 2012-09-03 2016-10-19 株式会社リコー 投射用ズームレンズおよびプロジェクタ装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4724335Y1 (https=) * 1969-10-29 1972-08-01
JPS5852201B2 (ja) * 1974-04-04 1983-11-21 ミノルタ株式会社 変倍レンズ
JPS6046688B2 (ja) * 1976-11-11 1985-10-17 富士写真光機株式会社 ズ−ムレンズ
JPS5444554A (en) * 1977-09-14 1979-04-09 Minolta Camera Co Ltd Variable power lens system
JPS5773715A (en) * 1980-10-24 1982-05-08 Asahi Optical Co Ltd Zoom lens system for finite distance

Also Published As

Publication number Publication date
US4585314A (en) 1986-04-29
JPS59201013A (ja) 1984-11-14

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