KR970048875A - High magnification zoom lens - Google Patents

High magnification zoom lens Download PDF

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Publication number
KR970048875A
KR970048875A KR1019950052834A KR19950052834A KR970048875A KR 970048875 A KR970048875 A KR 970048875A KR 1019950052834 A KR1019950052834 A KR 1019950052834A KR 19950052834 A KR19950052834 A KR 19950052834A KR 970048875 A KR970048875 A KR 970048875A
Authority
KR
South Korea
Prior art keywords
lens group
lens
refractive power
focal length
wide
Prior art date
Application number
KR1019950052834A
Other languages
Korean (ko)
Other versions
KR100382007B1 (en
Inventor
정진명
Original Assignee
이대원
삼성항공산업 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 이대원, 삼성항공산업 주식회사 filed Critical 이대원
Priority to KR1019950052834A priority Critical patent/KR100382007B1/en
Priority to DE19653157A priority patent/DE19653157A1/en
Priority to JP8341693A priority patent/JPH09179028A/en
Publication of KR970048875A publication Critical patent/KR970048875A/en
Application granted granted Critical
Publication of KR100382007B1 publication Critical patent/KR100382007B1/en

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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
    • G02B15/143—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 three groups only
    • G02B15/1431—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 three groups only the first group being positive
    • G02B15/143103—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 three groups only the first group being positive arranged ++-
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets

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

Abstract

물체측으로부터 정의 굴절력을 가지는 제1렌즈군과; 정의 굴절력을 가지는 제2렌즈군과; 부의 굴절력을 가지는 제3렌즈군으로 이루어지며, 광각단에서 망원단으로의 변배시에 상기 제1렌즈군과 제2렌즈군의 간격이 변화되고 동시에 상기 제2렌즈군과 제3렌즈군의 간격이 변화하면서 다음의 조건 3.5〈fT/fW(망원단에서의 전체 렌즈계의 초점 거리,fW: 광각단에서의 전체 렌즈계의 초점거리)을 만족하는 고배율 줌 렌즈는, 컴팩트형 카메라에 있어서, 광각단에서 망원단까지의 수차 특성이 양호하고 양산성이 우수한 평이한 형상을 가진다.A first lens group having positive refractive power from the object side; A second lens group having positive refractive power; And a third lens group having negative refractive power, wherein the distance between the first lens group and the second lens group is changed at the time of the change from the wide-angle end to the telephoto end, and at the same time, the distance between the second lens group and the third lens group. as the changing conditions of the next 3.5 <f T / f W: high magnification zoom lens satisfies the following (a focal length of the entire lens system at the telephoto end, f W focal length of the entire lens system at the wide-angle end), in the compact camera It has a flat shape with good aberration characteristics from the wide-angle end to the telephoto end and excellent mass productivity.

Description

고배율 줌렌즈High magnification zoom lens

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

제1도의 (가)~(다)는 이 발명의 제1실시예에 따른 고배율 줌렌즈의 각단에서의 렌즈 구성도,(A) to (c) of FIG. 1 is a lens configuration diagram at each end of the high magnification zoom lens according to the first embodiment of the present invention,

제2도의 (가)~(다)는 이 발명의 제1실시예에 따른 고배율 줌렌즈의 광각단에서의 수차도,2A to 2C are aberration diagrams at the wide-angle end of the high magnification zoom lens according to the first embodiment of the present invention;

제3도의 (가)~(다)는 이 발명의 제1실시예에 따른 고배율 줌렌즈의 중간단에서의 수차도,(A) to (c) of FIG. 3 are aberration diagrams at an intermediate stage of the high magnification zoom lens according to the first embodiment of the present invention,

제4도의 (가)~(다)는 이 발명의 제1실시예에 따른 고배율 줌렌즈의 망원단에서의 수차도,4A to 4C are aberration diagrams at the telephoto end of the high magnification zoom lens according to the first embodiment of the present invention;

제5도의 (가)~(다)는 이 발명의 제2실시예에 따른 고배율 줌렌즈의 각단에서의 렌즈 구성도.5A to 5C are lens configuration diagrams at each end of the high magnification zoom lens according to the second embodiment of the present invention.

Claims (3)

물체측으로부터 정의 굴절력을 가지는 제1렌즈군과; 정의 굴절력을 가지는 제2렌즈군과; 부의 굴절력을 가지는 제3렌즈군으로 이루어지며, 광각단에서 망원단으로의 변배시에 상기 제1렌즈군과 제2렌즈군의 간격이 변화되고 동시에 상기 제2렌즈군과 제3렌즈군의 간격이 변화하면서 다음의 조건을 만족하는 것을 특징으로 하는 고배율 줌렌즈.A first lens group having positive refractive power from the object side; A second lens group having positive refractive power; And a third lens group having negative refractive power, wherein the distance between the first lens group and the second lens group is changed at the change from the wide-angle end to the telephoto end, and at the same time, the distance between the second lens group and the third lens group A high magnification zoom lens characterized by satisfying the following conditions while being changed. fT:망원단에서의 전체 렌즈계의 초점거리fW: 광각단에서의 전체 렌즈계의 초점거리LT: 망원단에서 제1렌즈면에서 상면까지의 거리f1n: 제1렌즈군에서 부의 굴절력을 가지는 렌즈의 초점거리 f T : Focal length of the entire lens system from the telephoto end f W : Focal length of the entire lens system from the wide-angle end L T : Distance from the telephoto end to the first lens plane to the image surface f 1n : Negative refractive power of the first lens group Focal length of lens to have 제1항에 있어서, 다음의 조건을 더 포함하여 만족하는 것을 특징으로 하는 고배율 줌렌즈.The high magnification zoom lens of claim 1, further comprising and satisfying the following condition. fⅡ.ⅡW: 광각단에서 제2렌즈군과 제3렌즈군의 합성 초점 거리fⅡ.ⅡT: 망원단에서 제2렌즈군과 제3렌즈군의 합성 초점거리 Ⅱ.ⅡW f: combined focal length of the second lens unit and the third lens unit at the telephoto end: the second lens and the combined focal length of the third lens group at the wide-angle end f Ⅱ.ⅡT 제2항에 있어서, 상기 제2렌즈군과 제3렌즈군 사이에 조리개가 장착되는 것을 특징으로 하는 고배율 줌렌즈.3. The high magnification zoom lens of claim 2, wherein an aperture is mounted between the second lens group and the third lens group. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950052834A 1995-12-20 1995-12-20 High magnification zoom lens KR100382007B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019950052834A KR100382007B1 (en) 1995-12-20 1995-12-20 High magnification zoom lens
DE19653157A DE19653157A1 (en) 1995-12-20 1996-12-19 Zoom lens with three lens elements
JP8341693A JPH09179028A (en) 1995-12-20 1996-12-20 High-power zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950052834A KR100382007B1 (en) 1995-12-20 1995-12-20 High magnification zoom lens

Publications (2)

Publication Number Publication Date
KR970048875A true KR970048875A (en) 1997-07-29
KR100382007B1 KR100382007B1 (en) 2003-08-21

Family

ID=19441947

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950052834A KR100382007B1 (en) 1995-12-20 1995-12-20 High magnification zoom lens

Country Status (3)

Country Link
JP (1) JPH09179028A (en)
KR (1) KR100382007B1 (en)
DE (1) DE19653157A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112859291A (en) * 2021-02-01 2021-05-28 浙江舜宇光学有限公司 Camera lens

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002365552A (en) 2001-06-08 2002-12-18 Pentax Corp Zoom lens system
CN110673314B (en) * 2019-09-29 2021-12-03 凯迈（洛阳）测控有限公司 Negative compensation type large-target-surface medium-wave refrigeration infrared continuous zooming optical system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920006751Y1 (en) * 1989-12-16 1992-09-26 삼성전자 주식회사 Color signal compensating circuit of vtr
JP2870098B2 (en) * 1990-03-07 1999-03-10 ミノルタ株式会社 Compact zoom lens system
JP2915987B2 (en) * 1990-10-30 1999-07-05 旭光学工業株式会社 High-power zoom lens for compact cameras covering a wide angle
JPH0667093A (en) * 1992-08-20 1994-03-11 Minolta Camera Co Ltd High-power zoom lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112859291A (en) * 2021-02-01 2021-05-28 浙江舜宇光学有限公司 Camera lens

Also Published As

Publication number Publication date
DE19653157A1 (en) 1997-06-26
KR100382007B1 (en) 2003-08-21
JPH09179028A (en) 1997-07-11

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