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KR970002389A - Zoom lens optics - Google Patents

Zoom lens optics Download PDF

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Publication number
KR970002389A
KR970002389A KR1019950015769A KR19950015769A KR970002389A KR 970002389 A KR970002389 A KR 970002389A KR 1019950015769 A KR1019950015769 A KR 1019950015769A KR 19950015769 A KR19950015769 A KR 19950015769A KR 970002389 A KR970002389 A KR 970002389A
Authority
KR
South Korea
Prior art keywords
lens unit
focal length
lens
optical axis
image
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.)
Withdrawn
Application number
KR1019950015769A
Other languages
Korean (ko)
Inventor
장요셉
양진오
김용욱
Original Assignee
김광호
삼성전자 주식회사
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950015769A priority Critical patent/KR970002389A/en
Priority to CN96107859A priority patent/CN1061761C/en
Publication of KR970002389A publication Critical patent/KR970002389A/en
Withdrawn legal-status Critical Current

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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
    • G02B3/00—Simple or compound lenses
    • G02B3/0087—Simple or compound lenses with index gradient
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B2003/0093—Simple or compound lenses characterised by the shape

Landscapes

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

Abstract

줌(zoom)렌즈 광학계가 개시되어 있다.A zoom lens optical system is disclosed.

이 광학계는 양의 파우어를 가지며 물체에 대한 상을 결상하도록 초점거리 F1을 가지는 제1렌즈유니트(1)와, 음의 파우어를 가지며 제1렌즈유니트(1)와 동일 광축을 이동하여 제1렌즈유니트(1)에 의한 상의 크기를 가변시킬 수 있도록 움직가능하게 설치되고 처점거리 F2를 가지는 제2렌즈유니트(2)와, 양의 파우어를 가지며 제2렌즈유니트(2)에 의하여 가변된 상을 전달하도록 공간적으로 고정 설치된 초점거리 F3을 가지는 제3렌즈유니트(3)와, 양의 파우어를 가지며 광축을 이동하여 제2렌즈유니트(2)의 이동에 따른 상점이동을 보상함과 동시에 변화에 대응하여 포커싱하도록 광축을 따라 움직가능하게 설치되는 초점거리 F4를 가지는 제4렌즈유니트(4)를 구비하고, 다음 식을 만족하는 것을 특징으로 한다.This optical system has a first lens unit 1 having a positive power and having a focal length F 1 to form an image on an object, and a negative power and having the same optical axis as the first lens unit 1 moving the first optical axis. A second lens unit 2 movably installed to vary the size of the image by the lens unit 1 and having a focal length F 2 , and a positive powder and variable by the second lens unit 2. A third lens unit 3 having a focal length F 3 fixedly installed to transmit an image, a positive power, and an optical axis are moved to compensate for the movement of a store due to the movement of the second lens unit 2. A fourth lens unit 4 having a focal length F 4 movably provided along the optical axis to focus in response to the change is characterized by satisfying the following equation.

1.0〈｜F2/Fw｜〈1.51.0 <| F 2 / F w | <1.5

0.9〈｜F1/F3｜〈1.50.9 <| F 1 / F 3 | <1.5

2.5〈｜F4/F2｜〈3.52.5 <| F 4 / F 2 | <3.5

15.4〈｜TL/Fw｜〈18.415.4 〈｜ T L / F w ｜ 〈18.4

여기서, Fw는 광각단에서의 줌렌즈유니트의 초점거리이며, TL은 줌렌즈유니트의 첫면에서 상면까지의 거리이다.F w is the focal length of the zoom lens unit at the wide-angle end, and T L is the distance from the first surface of the zoom lens unit to the image surface.

Description

줌(zoom)렌즈 광학계Zoom lens optics

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 줌렌즈 광학계의 광각단에서의 광학적 배치를 보인 단면도, 제2도는 본 발명에 따른 줌렌즈 광학계의 중간단에서의 광학적 배치를 보인 단면도, 제3도는 본 발명에 따른 줌렌즈 광하계의 망원단에서의 광학적 배치를 보인 단면도.1 is a cross-sectional view showing an optical arrangement at the wide-angle end of the zoom lens optical system according to the present invention, Figure 2 is a cross-sectional view showing an optical arrangement at the intermediate end of the zoom lens optical system according to the present invention, Figure 3 is a zoom lens optical system according to the present invention Cross-sectional view showing optical placement of the telephoto end of

Claims (2)

양의 파우어를 가지며 물체에 대한 상을 결상하도록 초점거리 F1을 가지는 제1렌즈유니트와, 음의 파우어를 가지며 상기 제1렌즈유니트와 동일 광축을 이동하여 상기 제1렌즈유니트에 의한 상의 크기를 가변시킬 수 있도록 움직가능하게 설치된 초점거리 F2를 가지는 제2렌즈 유니트와, 양의 파우어를 가지며 상기 제2렌즈유니트에 의하여 가변된 상을 전달하도록 공간적으로 고정 설치된 초점거리 F3을 가지는 제3렌즈유니트와, 양의 파우어를 가지며 광축을 이동하여 상기 제2렌즈유니트의 이동에 따른 상점이동을 보상함과 동시에 변화에 대응하여 포커싱하도록 광축을 따라 움직가능하게 설치된 초점거리 F4를 가지는 제4렌즈유니트를 구비하고, 다음식을 만족하는 것을 특징으로 하는 줌(zoom)렌즈 광학계.A first lens unit having a positive power and having a focal length F 1 to form an image on an object, and a negative power and having the same power axis by moving the same optical axis as that of the first lens unit A second lens unit having a focal length F 2 movably mounted to be variable, and a third having a positive power and having a focal length F 3 spatially fixed to deliver an image varied by the second lens unit A fourth having a lens unit and a focal length F 4 which has a positive power and is installed to be movable along the optical axis to compensate for the movement of the second lens unit by moving the optical axis and to focus in response to the change. A zoom lens optical system comprising a lens unit and satisfying the following equation. 1.0〈｜F2/Fw｜〈1.51.0 <| F 2 / F w | <1.5 0.9〈｜F1/F3｜〈1.50.9 <| F 1 / F 3 | <1.5 2.5〈｜F4/F2｜〈3.52.5 <| F 4 / F 2 | <3.5 15.4〈｜TL/Fw｜〈18.415.4 〈｜ T L / F w ｜ 〈18.4 여기서, FW는 광각단에서의 줌렌즈유니트의 초점거리이며, TL은 줌렌즈유니트의 첫면에서 상면까지의 거리이다.Here, F W is the focal length of the zoom lens unit at the wide-angle end, and T L is the distance from the first surface of the zoom lens unit to the image surface. 제1항에 있어서, 상기 제1렌즈유니트는 2매 이상의 볼록렌즈와 1매 이상의 오목렌즈를 구비하고, 상기 제2렌즈유니트는 1매 이상의 볼록렌즈와 2매 이상의 오목렌즈를 구비하고, 상기 제3렌즈유니트는 각각 1매의 볼록렌즈와 오목렌즈를 구비하고, 상기 제4렌즈유니트는 1매 이상의 볼록렌즈 및 오목렌즈를 구비한 것을 특징으로 하는 줌렌즈 광학계.The method of claim 1, wherein the first lens unit comprises at least two convex lenses and at least one concave lens, the second lens unit comprises at least one convex lens and at least two concave lenses, Each of the three lens units includes one convex lens and one concave lens, and the fourth lens unit includes one or more convex and concave lenses. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950015769A 1995-06-14 1995-06-14 Zoom lens optics Withdrawn KR970002389A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019950015769A KR970002389A (en) 1995-06-14 1995-06-14 Zoom lens optics
CN96107859A CN1061761C (en) 1995-06-14 1996-06-13 Varifocal lens optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950015769A KR970002389A (en) 1995-06-14 1995-06-14 Zoom lens optics

Publications (1)

Publication Number Publication Date
KR970002389A true KR970002389A (en) 1997-01-24

Family

ID=19417133

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950015769A Withdrawn KR970002389A (en) 1995-06-14 1995-06-14 Zoom lens optics

Country Status (2)

Country Link
KR (1) KR970002389A (en)
CN (1) CN1061761C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3936625B2 (en) * 2002-05-27 2007-06-27 オリンパス株式会社 Zoom lens for Greenough-type stereomicroscope
JP3977150B2 (en) * 2002-06-04 2007-09-19 キヤノン株式会社 Zoom lens and photographing apparatus
JP3927866B2 (en) * 2002-06-04 2007-06-13 キヤノン株式会社 Zoom lens and photographing apparatus
JP4366110B2 (en) * 2003-05-06 2009-11-18 キヤノン株式会社 Zoom lens and optical apparatus having the same
WO2007010822A1 (en) * 2005-07-19 2007-01-25 Matsushita Electric Industrial Co., Ltd. Zoom lens system and imaging optical device using the same
JP2007206545A (en) * 2006-02-03 2007-08-16 Matsushita Electric Ind Co Ltd Zoom lens system, lens barrel, imaging device and camera
KR100799218B1 (en) * 2006-09-13 2008-01-29 삼성테크윈 주식회사 Compact zoom lens
JP5072474B2 (en) * 2007-08-06 2012-11-14 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP5206174B2 (en) * 2008-07-08 2013-06-12 株式会社リコー Zoom lens, camera, and portable information terminal device
CN102087404B (en) * 2009-12-07 2012-07-18 广圆光电股份有限公司 Zoom lens
JP5648907B2 (en) * 2010-11-26 2015-01-07 株式会社ニコン Magnification optical system and optical instrument
CN107589534B (en) * 2017-09-04 2019-09-17 浙江大华技术股份有限公司 A kind of lens system and camera lens

Also Published As

Publication number Publication date
CN1061761C (en) 2001-02-07
CN1167268A (en) 1997-12-10

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A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19950614

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19950614

Comment text: Request for Examination of Application

PG1501 Laying open of application
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PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 19980630

Patent event code: PE09021S01D

PC1202 Submission of document of withdrawal before decision of registration

Comment text: [Withdrawal of Procedure relating to Patent, etc.] Withdrawal (Abandonment)

Patent event code: PC12021R01D

Patent event date: 19980824

WITB Written withdrawal of application