HK1001336A1 - A method and zoom lens assembly for correcting focus deviation during zooming - Google Patents

A method and zoom lens assembly for correcting focus deviation during zooming Download PDF

Info

Publication number
HK1001336A1
HK1001336A1 HK98100337A HK98100337A HK1001336A1 HK 1001336 A1 HK1001336 A1 HK 1001336A1 HK 98100337 A HK98100337 A HK 98100337A HK 98100337 A HK98100337 A HK 98100337A HK 1001336 A1 HK1001336 A1 HK 1001336A1
Authority
HK
Hong Kong
Prior art keywords
lens
focusing
object distance
lens group
zoom lens
Prior art date
Application number
HK98100337A
Other languages
English (en)
Chinese (zh)
Other versions
HK1001336B (en
Inventor
Haraguchi Keisuke
Takaoka Yukio
Kohmoto Shinsuke
Kobayashi Takeo
Ito Takayuki
Kobayashi Tomoaki
Original Assignee
Asahi Kogaku Kogyo Kabushiki Kaisha
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 Kabushiki Kaisha filed Critical Asahi Kogaku Kogyo Kabushiki Kaisha
Publication of HK1001336B publication Critical patent/HK1001336B/xx
Publication of HK1001336A1 publication Critical patent/HK1001336A1/xx

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Lenses (AREA)
HK98100337A 1988-10-15 1998-01-15 A method and zoom lens assembly for correcting focus deviation during zooming HK1001336A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP63260022 1988-10-15
JP26002288 1988-10-15
JP63330468 1988-12-27
JP33046888 1988-12-27
JP8834689 1989-04-07
JP01088346 1989-04-07

Publications (2)

Publication Number Publication Date
HK1001336B HK1001336B (en) 1998-06-12
HK1001336A1 true HK1001336A1 (en) 1998-06-12

Family

ID=27305792

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98100337A HK1001336A1 (en) 1988-10-15 1998-01-15 A method and zoom lens assembly for correcting focus deviation during zooming

Country Status (5)

Country Link
US (1) US5170294A (https=)
DE (1) DE3934497A1 (https=)
FR (1) FR2637989A1 (https=)
GB (1) GB2223862B (https=)
HK (1) HK1001336A1 (https=)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2535031Y2 (ja) * 1989-02-09 1997-05-07 旭光学工業株式会社 レンズの遮光枠
GB2261303B (en) * 1989-03-31 1993-09-15 Asahi Optical Co Ltd Zooming adjustment of a zoom lens
JPH03266820A (ja) * 1990-03-16 1991-11-27 Asahi Optical Co Ltd 電動ズーム装置
JP3435580B2 (ja) * 1993-04-30 2003-08-11 コニカ株式会社 ズームレンズ鏡胴及びカメラ
US5661609A (en) * 1993-07-06 1997-08-26 Olympus Optical Co., Ltd. Lens mount
GB2281407B (en) * 1993-08-27 1997-05-07 Asahi Optical Co Ltd Zoom lens barrel
US6151171A (en) * 1999-03-31 2000-11-21 Eastman Kodak Company Zoom assembly having zoom lens with plurality of lens group that move together or differentially for zooming and focusing
JP2010008746A (ja) * 2008-06-27 2010-01-14 Hoya Corp レンズ鏡筒のバリヤ機構
CN112105980B (zh) 2018-05-18 2023-04-28 株式会社尼康 光学系统以及光学设备

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852201B2 (ja) * 1974-04-04 1983-11-21 ミノルタ株式会社 変倍レンズ
US4161756A (en) * 1976-03-19 1979-07-17 Jos. Schneider & Co. Optische Werke Control system for varifocal objective
FR2373804A1 (fr) * 1976-12-09 1978-07-07 Fuji Photo Optical Co Ltd Objectif zoom pour appareils de prise de vues
JPS5751366Y2 (https=) * 1978-08-21 1982-11-09
US4230397A (en) * 1978-09-21 1980-10-28 Bell & Howell Company Large aperture extended range zoom lens
JPS5829452Y2 (ja) * 1979-07-13 1983-06-28 オリンパス光学工業株式会社 保護カバ−を有するカメラ
JPS5680010A (en) * 1979-12-04 1981-07-01 Asahi Optical Co Ltd Cam groove for displacement lens
JPS57188004A (en) * 1981-05-14 1982-11-18 Olympus Optical Co Ltd Automatic focusing zoom lens
US4466708A (en) * 1981-12-28 1984-08-21 Vivitar Corporation Zoom lens
JPS606914A (ja) * 1983-06-25 1985-01-14 Canon Inc ズームレンズ
JPS6051813A (ja) * 1983-08-31 1985-03-23 Canon Inc ズ−ムレンズ
JPS61128217A (ja) * 1984-11-27 1986-06-16 Asahi Optical Co Ltd 可変焦点付オ−トフオ−カスカメラ
JPH07119872B2 (ja) * 1985-12-02 1995-12-20 旭光学工業株式会社 ズ−ムレンズ鏡筒
JPH0685018B2 (ja) * 1986-02-24 1994-10-26 オリンパス光学工業株式会社 マクロレンズ
JPS62237416A (ja) * 1986-04-08 1987-10-17 Minolta Camera Co Ltd 有限距離用ズ−ムレンズ系
JPS62244026A (ja) * 1986-04-17 1987-10-24 Canon Inc カメラのレンズカバ−装置
ATE141693T1 (de) * 1986-05-12 1996-09-15 Asahi Optical Co Ltd Zwischenlinsenverschlusscamera mit zoomobjektiv
JPH07113732B2 (ja) * 1987-03-27 1995-12-06 富士写真光機株式会社 カメラのレンズバリア開閉機構

Also Published As

Publication number Publication date
US5170294A (en) 1992-12-08
DE3934497A1 (de) 1990-04-19
GB2223862B (en) 1993-04-28
GB2223862A (en) 1990-04-18
GB8923296D0 (en) 1989-12-06
FR2637989B1 (https=) 1994-07-13
FR2637989A1 (fr) 1990-04-20

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Legal Events

Date Code Title Description
PF Patent in force
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20061016