JPH0210404B2 - - Google Patents

Info

Publication number
JPH0210404B2
JPH0210404B2 JP58165616A JP16561683A JPH0210404B2 JP H0210404 B2 JPH0210404 B2 JP H0210404B2 JP 58165616 A JP58165616 A JP 58165616A JP 16561683 A JP16561683 A JP 16561683A JP H0210404 B2 JPH0210404 B2 JP H0210404B2
Authority
JP
Japan
Prior art keywords
lens
positive
lens group
negative
focal length
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 - Lifetime
Application number
JP58165616A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6057311A (ja
Inventor
Yasunori Arai
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP58165616A priority Critical patent/JPS6057311A/ja
Priority to GB08421977A priority patent/GB2146452B/en
Priority to US06/646,700 priority patent/US4597641A/en
Publication of JPS6057311A publication Critical patent/JPS6057311A/ja
Publication of JPH0210404B2 publication Critical patent/JPH0210404B2/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
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • 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
    • 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
    • G02B15/1421—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 positive

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP58165616A 1983-09-08 1983-09-08 複写用変倍レンズ Granted JPS6057311A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP58165616A JPS6057311A (ja) 1983-09-08 1983-09-08 複写用変倍レンズ
GB08421977A GB2146452B (en) 1983-09-08 1984-08-31 Two group variable power copying lens system
US06/646,700 US4597641A (en) 1983-09-08 1984-08-31 Variable-power copying lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58165616A JPS6057311A (ja) 1983-09-08 1983-09-08 複写用変倍レンズ

Publications (2)

Publication Number Publication Date
JPS6057311A JPS6057311A (ja) 1985-04-03
JPH0210404B2 true JPH0210404B2 (en, 2012) 1990-03-08

Family

ID=15815746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58165616A Granted JPS6057311A (ja) 1983-09-08 1983-09-08 複写用変倍レンズ

Country Status (3)

Country Link
US (1) US4597641A (en, 2012)
JP (1) JPS6057311A (en, 2012)
GB (1) GB2146452B (en, 2012)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4832465A (en) * 1985-08-14 1989-05-23 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens for use in copying
JPS62264019A (ja) * 1985-11-28 1987-11-17 Asahi Optical Co Ltd コンパクトカメラ用ズ−ムレンズ
JPH07119931B2 (ja) * 1986-09-27 1995-12-20 富士写真光機株式会社 複写機用光学系
JP2761732B2 (ja) * 1988-02-26 1998-06-04 旭光学工業株式会社 変倍光学装置
KR0141203B1 (ko) * 1994-03-28 1998-08-17 이대원 투영광학계
JPH07306361A (ja) * 1994-05-11 1995-11-21 Canon Inc 小型のズームレンズ
JP6226295B2 (ja) * 2014-01-10 2017-11-08 株式会社オプトロジック 撮像レンズ
WO2016109938A1 (zh) * 2015-01-06 2016-07-14 浙江舜宇光学有限公司 摄像镜头
CN109324398B (zh) 2019-01-02 2019-04-02 江西联益光学有限公司 光学成像镜头及成像设备
WO2021127857A1 (zh) * 2019-12-23 2021-07-01 诚瑞光学(常州)股份有限公司 摄像光学镜头
CN112269249B (zh) * 2020-12-24 2021-03-23 诚瑞光学(苏州)有限公司 摄像光学镜头
CN112285904B (zh) * 2020-12-31 2021-03-09 常州市瑞泰光电有限公司 摄像光学镜头
CN114994867B (zh) * 2022-06-16 2024-01-30 东莞市宇瞳汽车视觉有限公司 一种定焦镜头
CN114779448B (zh) * 2022-06-17 2022-10-21 江西晶超光学有限公司 光学成像系统、镜头模组及电子设备
CN115061265B (zh) * 2022-07-01 2023-05-09 厦门力鼎光电股份有限公司 一种紧凑型物流扫描检测镜头

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883228A (en) * 1973-07-09 1975-05-13 Minnesota Mining & Mfg Variable magnification zoom lens
JPS5768810A (en) * 1980-10-18 1982-04-27 Asahi Optical Co Ltd Variable nagnification lens system for copying

Also Published As

Publication number Publication date
GB2146452A (en) 1985-04-17
JPS6057311A (ja) 1985-04-03
GB2146452B (en) 1986-07-23
GB8421977D0 (en) 1984-10-03
US4597641A (en) 1986-07-01

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