KR920012957A - 줌렌즈 - Google Patents

줌렌즈 Download PDF

Info

Publication number
KR920012957A
KR920012957A KR1019910020766A KR910020766A KR920012957A KR 920012957 A KR920012957 A KR 920012957A KR 1019910020766 A KR1019910020766 A KR 1019910020766A KR 910020766 A KR910020766 A KR 910020766A KR 920012957 A KR920012957 A KR 920012957A
Authority
KR
South Korea
Prior art keywords
lens
negative
object side
positive
lens group
Prior art date
Application number
KR1019910020766A
Other languages
English (en)
Other versions
KR100195316B1 (ko
Inventor
아끼라 나까무라
유이찌 나까노
Original Assignee
오가 노리오
소니 가부시기가이샤
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 오가 노리오, 소니 가부시기가이샤 filed Critical 오가 노리오
Publication of KR920012957A publication Critical patent/KR920012957A/ko
Application granted granted Critical
Publication of KR100195316B1 publication Critical patent/KR100195316B1/ko

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 +-++
    • 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
    • G02B15/22—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 with movable lens means specially adapted for focusing at close distances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

내용 없음

Description

줌렌즈
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본원 발명에 의한 줌렌즈의 일실시에의 구성도, 제2도는 제1도의 구성에 있어서의 형상의 파라미터의 할당을 나타낸 선도, 제3도는 그 실시예의 광각포지션에 있어서의 수차도.

Claims (3)

  1. 물체측으로부터 차례로 정(正)의 굴절력을 가지는 고정의 제1렌즈군과 부(負)의 굴절력을 가지며 변배(變倍)를 행하는 제2렌즈군과, 정의 굴절력을 가지는 고정의 제3렌즈군과, 정의 굴절력을 가지며 변배에 따른 상면(像面)의 이동보상 및 합초(合焦)를 행하는 제4렌즈군을 가지는 줌렌즈에 있어서, 상기 제3렌즈군을 물체측으로부터 정(正)렌즈와 부(負)렌즈로 이루어지는 2매의 분리된 렌즈로 구성한 것을 특징으로 하는 줌렌즈.
  2. 제1항에 있어서, 상기 제3렌즈군의 정렌즈의 물체측의 면의 형상을 다음의 ⑴식에 의해 표시하고(단, Y는 광축으로부터의 높이, Z는 물체측을 부(負)로 했을 때의 그 높이 Y에 있어서의 렌즈의 정점(頂点)의 접평면(接平面)으로부터의 거리, R31은 근축(近軸)곡률반경, K31,AD31,AE31,AF31,AG31은 각각 계수임).
    상기 정렌즈의 상측(像側)의 면의 형상을 다음의 ⑵식에 의해 표시했을 때에(단, Y는 광축으로부터의 높이, Z는 물체측을 부(負)로 했을 때의 그 높이 Y에 있어서의 렌즈의 정점(頂点)의 접평면(接平面)으로부터의 거리, R32은 근축(近軸)곡률반경, K32,AD32,AE32,AF32,AG32는 각각 계수임),
    상기 정렌즈이 형상이 다음의 관계
    를 만족하고 있는 것을 특징으로 하는 줌렌즈.
  3. 제1항에 있어서, 상기 부렌즈의 상측(像側)의 면의 곡률반경을 R34(물체측에 블록의 경우를 정으로 함),줌렌즈의 전체로서의 광각단(廣角端)의 초점거리를 fw, 전체로서의 망원단(望遠端)의 초점 거리를 ft로 했을 때에
    의 관계가 성립하도록 한 것을 특징으로 하는 줌렌즈.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910020766A 1990-12-28 1991-11-21 줌렌즈 KR100195316B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2417122A JP3003226B2 (ja) 1990-12-28 1990-12-28 ズームレンズ
JP90-417122 1990-12-28

Publications (2)

Publication Number Publication Date
KR920012957A true KR920012957A (ko) 1992-07-28
KR100195316B1 KR100195316B1 (ko) 1999-06-15

Family

ID=18525256

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910020766A KR100195316B1 (ko) 1990-12-28 1991-11-21 줌렌즈

Country Status (5)

Country Link
US (1) US5233471A (ko)
EP (1) EP0493261B1 (ko)
JP (1) JP3003226B2 (ko)
KR (1) KR100195316B1 (ko)
DE (1) DE69107600T2 (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0529646B1 (en) * 1991-08-30 1997-04-23 Canon Kabushiki Kaisha Zoom lens
JPH05341187A (ja) * 1992-04-10 1993-12-24 Ricoh Co Ltd 実像式変倍ファインダーおよび倍率遷移可能な実像式変倍ファインダー
DE69409159T2 (de) * 1993-06-07 1998-10-22 Matsushita Electric Ind Co Ltd Asphärisches Zoomobjektiv
KR0133445B1 (ko) * 1993-09-17 1998-04-23 구자홍 광학 뷰 파인더를 일체화한 리어 포커스방식 줌렌즈
US6886207B1 (en) 1999-06-14 2005-05-03 The Procter & Gamble Company Toothbrush
JP3570253B2 (ja) * 1998-10-28 2004-09-29 ソニー株式会社 ズームレンズ
JP4626135B2 (ja) * 2002-10-04 2011-02-02 株式会社ニコン 大口径比内焦式望遠ズームレンズ
JP4819413B2 (ja) * 2005-06-24 2011-11-24 オリンパス株式会社 ズームレンズ及びそれを用いた撮像装置
JP5087945B2 (ja) * 2007-02-16 2012-12-05 株式会社ニコン ズームレンズと、これを有する光学装置
KR101971475B1 (ko) * 2013-01-03 2019-04-23 한화테크윈 주식회사 줌 렌즈계

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5782812A (en) * 1980-11-12 1982-05-24 Canon Inc Zoom lens
JP2538526B2 (ja) * 1986-03-17 1996-09-25 キヤノン株式会社 ズ−ムレンズ
US4802717A (en) * 1986-04-21 1989-02-07 Hughes Aircraft Company Infrared afocal zoom telescope
US4802747A (en) * 1986-09-25 1989-02-07 Canon Kabushiki Kaisha Compact zoom lens
JP2737838B2 (ja) * 1986-11-13 1998-04-08 オリンパス光学工業株式会社 変倍レンズ系
JPH01185608A (ja) * 1988-01-20 1989-07-25 Olympus Optical Co Ltd 変倍レンズ

Also Published As

Publication number Publication date
EP0493261B1 (en) 1995-02-22
JPH04242708A (ja) 1992-08-31
DE69107600D1 (de) 1995-03-30
JP3003226B2 (ja) 2000-01-24
DE69107600T2 (de) 1995-08-03
US5233471A (en) 1993-08-03
EP0493261A2 (en) 1992-07-01
EP0493261A3 (en) 1992-11-04
KR100195316B1 (ko) 1999-06-15

Similar Documents

Publication Publication Date Title
JPH08327907A (ja) ズームレンズ
KR920022034A (ko) 줌 렌즈
KR920003752A (ko) 수차변동을 억제한 리어포커스형 줌렌즈
US4474436A (en) Finite distance zoom lens system
JPH08248312A (ja) ズームレンズ
KR920012957A (ko) 줌렌즈
KR970002427A (ko) 소형의 배율변환 광학계
US5666233A (en) Two-unit zoom lens system having a high zoom ratio
KR970022474A (ko) 대구경 광각 줌레즈
US4232942A (en) Optically compensated zoom lens
KR100256203B1 (ko) 초광각 변배 파인더
KR960008356A (ko) 줌렌즈
KR950033631A (ko) 실상식 변배 파인더
KR970056946A (ko) 광각 변배 파인더
KR100382001B1 (ko) 실상식 변배 파인더
KR960042189A (ko) 변배 파인더
KR900016775A (ko) 줌렌즈 시스템
US6046862A (en) Zoom lens system
KR950014960A (ko) 광각 줌 렌즈
KR970022391A (ko) 변배 파인더
KR950019885A (ko) 광각 줌 렌즈
KR100247283B1 (ko) 실상식 변배 파인더
KR940013140A (ko) 비구면 줌렌즈
KR960018620A (ko) 배율 가변식 파인더
KR970048875A (ko) 고배율 줌렌즈

Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19911121

PG1501 Laying open of application
A201 Request for examination
PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19960122

Comment text: Request for Examination of Application

Patent event code: PA02011R01I

Patent event date: 19911121

Comment text: Patent Application

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 19990129

GRNT Written decision to grant
PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 19990211

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 19990212

End annual number: 3

Start annual number: 1

PG1601 Publication of registration
PR1001 Payment of annual fee

Payment date: 20020112

Start annual number: 4

End annual number: 4

PR1001 Payment of annual fee

Payment date: 20030121

Start annual number: 5

End annual number: 5

PR1001 Payment of annual fee

Payment date: 20040114

Start annual number: 6

End annual number: 6

PR1001 Payment of annual fee

Payment date: 20050131

Start annual number: 7

End annual number: 7

PR1001 Payment of annual fee

Payment date: 20060131

Start annual number: 8

End annual number: 8

PR1001 Payment of annual fee

Payment date: 20070131

Start annual number: 9

End annual number: 9

PR1001 Payment of annual fee

Payment date: 20080128

Start annual number: 10

End annual number: 10

FPAY Annual fee payment

Payment date: 20090123

Year of fee payment: 11

PR1001 Payment of annual fee

Payment date: 20090123

Start annual number: 11

End annual number: 11

LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

Termination category: Default of registration fee

Termination date: 20110110