KR100758291B1 - 굴절형 소형 줌렌즈 광학계 - Google Patents
굴절형 소형 줌렌즈 광학계 Download PDFInfo
- Publication number
- KR100758291B1 KR100758291B1 KR1020070015399A KR20070015399A KR100758291B1 KR 100758291 B1 KR100758291 B1 KR 100758291B1 KR 1020070015399 A KR1020070015399 A KR 1020070015399A KR 20070015399 A KR20070015399 A KR 20070015399A KR 100758291 B1 KR100758291 B1 KR 100758291B1
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- South Korea
- Prior art keywords
- lens group
- lens
- optical system
- refractive power
- distance
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Classifications
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- 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
- G02B15/16—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 interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—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 interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
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- 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
- G02B15/1445—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 negative
- G02B15/144513—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 negative arranged --++
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- 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
- G02B15/24—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 having a front fixed lens or lens group and two movable lenses or lens groups in front of a fixed lens or lens group
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Abstract
Description
Claims (7)
- 물체 측으로부터 총 파워가 부의 굴절력이고 빛을 반사시키는 면을 가지는 광학부품을 포함하는 제1 렌즈군, 총 파워가 부의 굴절력인 제2 렌즈군, 조리개, 총 파워가 정의 굴절력인 제3 렌즈군, 총 파워가 정의 굴절력인 제4 렌즈군을 포함하며,상기 제2 렌즈군과 상기 제3 렌즈군과 상기 제4 렌즈군을 이동하여 배율을 변화시키는 변배의 효과를 갖고, 물체거리가 원거리와 근거리로 이동할 때 상기 제2렌즈군을 이동시켜 자동 초점조절을 수행하며,상기 조리개는 변배시에 상기 제3렌즈군과 함께 이동하고, 변배시 및 초점조절시 렌즈가 이동하더라도 상기 제1 렌즈군의 첫 번째 렌즈부터 이미지 면까지의 거리가 고정되어 있는 것을 특징으로 하는 줌렌즈 광학계
- 제1항에 있어서,상기 제1 렌즈군에는 비구면으로 형성되어 있는 렌즈면이 적어도 1개 이상이 포함되는 것을 특징으로 하는 줌렌즈 광학계
- 제1항에 있어서,상기 제2 렌즈군에는 정의 굴절력의 렌즈와 부의 굴절력의 렌즈가 포함되어 있는 것을 특징으로 하는 줌렌즈 광학계
- 제1항에 있어서,상기 제4 렌즈군은 1매의 렌즈로 구성되어져 있으며 적어도 1개 이상의 비구면을 포함하는 것을 특징으로 하는 줌렌즈 광학계
- 제4항에 있어서,상기 제4 렌즈군은 플라스틱 소재로 이루어진 것을 특징으로 하는 줌렌즈 광학계
- 제1항에 있어서,TTL 을 상기 제1 렌즈군의 가장 물체측면부터 이미지면까지의 광축상의 거리라고 하고, fw 는 광학계가 가장 광각일 때의 초점거리라고 할 때, 다음의 수식을 만족하는 것을 특징으로 하는 줌렌즈 광학계1 < TTL / fw < 7
- 제1항에 있어서,fw 는 광학계가 가장 광각일때의 초점거리이고, f4 는 상기 제4 렌즈군의 총초점거리라 할 때 다음의 수식을 만족하는 것을 특징으로 하는 줌렌즈 광학계0 < fw/f4 < 1
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070015399A KR100758291B1 (ko) | 2007-02-14 | 2007-02-14 | 굴절형 소형 줌렌즈 광학계 |
US12/071,066 US7830621B2 (en) | 2007-02-14 | 2008-02-14 | Small refractive zoom lens optical system |
JP2008033700A JP2008197659A (ja) | 2007-02-14 | 2008-02-14 | 屈折型の小型ズームレンズ光学系 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070015399A KR100758291B1 (ko) | 2007-02-14 | 2007-02-14 | 굴절형 소형 줌렌즈 광학계 |
Publications (1)
Publication Number | Publication Date |
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KR100758291B1 true KR100758291B1 (ko) | 2007-09-12 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070015399A KR100758291B1 (ko) | 2007-02-14 | 2007-02-14 | 굴절형 소형 줌렌즈 광학계 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7830621B2 (ko) |
JP (1) | JP2008197659A (ko) |
KR (1) | KR100758291B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180012150A (ko) | 2016-07-26 | 2018-02-05 | 자화전자(주) | 줌렌즈용 자동초점 조절장치 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112009001799A5 (de) * | 2008-08-18 | 2011-09-29 | Qioptiq Photonics Gmbh & Co. Kg | Verfahren zur Herstellung eines Objektivs |
DE102008042221B9 (de) * | 2008-09-19 | 2022-06-23 | Carl Zeiss Ag | Optisches System sowie Fernrohr mit einem optischen System |
DE102008061664A1 (de) | 2008-12-12 | 2010-06-17 | Linos Photonics Gmbh & Co. Kg | Miniaturisiertes Vario-Objektiv |
JP5807166B2 (ja) | 2010-07-12 | 2015-11-10 | パナソニックIpマネジメント株式会社 | ズームレンズ系、交換レンズ装置及びカメラシステム |
DE102012214303B9 (de) | 2012-08-10 | 2022-07-07 | Carl Zeiss Ag | Optisches System zur Abbildung eines Objekts sowie Aufnahmeeinheit mit einem optischen System |
CN109358408B (zh) * | 2018-11-23 | 2024-02-13 | 广东奥普特科技股份有限公司 | 一种大视场宽工作距离高分辨率机器视觉镜头 |
JP7354690B2 (ja) * | 2019-08-29 | 2023-10-03 | コニカミノルタ株式会社 | 撮像光学系、撮像装置及び携帯端末 |
Citations (4)
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JP2004163477A (ja) | 2002-11-11 | 2004-06-10 | Minolta Co Ltd | 撮像レンズ装置 |
JP2004348082A (ja) | 2003-05-26 | 2004-12-09 | Olympus Corp | 光路折り曲げ光学系 |
JP2006058363A (ja) | 2004-08-17 | 2006-03-02 | Sharp Corp | ズームレンズおよびそれを用いたカメラモジュール |
KR20060123673A (ko) * | 2004-03-17 | 2006-12-04 | 소니 가부시끼 가이샤 | 줌 렌즈 및 줌 렌즈를 이용한 촬상 장치 |
Family Cites Families (9)
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JP4519232B2 (ja) * | 1999-12-28 | 2010-08-04 | 株式会社シグマ | ズームレンズ |
JP3656089B2 (ja) * | 2000-03-29 | 2005-06-02 | コニカミノルタフォトイメージング株式会社 | 撮像レンズ装置 |
US7085070B2 (en) * | 2002-05-14 | 2006-08-01 | Olympus Corporation | Zoom lens and electronic imaging device having the same |
JP3896988B2 (ja) | 2003-05-12 | 2007-03-22 | コニカミノルタフォトイメージング株式会社 | 撮像レンズ装置 |
JP2005266173A (ja) * | 2004-03-17 | 2005-09-29 | Sony Corp | ズームレンズ及び撮像装置 |
JP2007004020A (ja) * | 2005-06-27 | 2007-01-11 | Sony Corp | ズームレンズ及び撮像装置 |
JP2007079326A (ja) * | 2005-09-16 | 2007-03-29 | Nidec Copal Corp | ズームレンズ |
JP4915086B2 (ja) * | 2005-12-07 | 2012-04-11 | ソニー株式会社 | ズームレンズ及び撮像装置 |
JP4886346B2 (ja) * | 2006-04-14 | 2012-02-29 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
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2007
- 2007-02-14 KR KR1020070015399A patent/KR100758291B1/ko active IP Right Grant
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2008
- 2008-02-14 US US12/071,066 patent/US7830621B2/en active Active
- 2008-02-14 JP JP2008033700A patent/JP2008197659A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004163477A (ja) | 2002-11-11 | 2004-06-10 | Minolta Co Ltd | 撮像レンズ装置 |
JP2004348082A (ja) | 2003-05-26 | 2004-12-09 | Olympus Corp | 光路折り曲げ光学系 |
KR20060123673A (ko) * | 2004-03-17 | 2006-12-04 | 소니 가부시끼 가이샤 | 줌 렌즈 및 줌 렌즈를 이용한 촬상 장치 |
JP2006058363A (ja) | 2004-08-17 | 2006-03-02 | Sharp Corp | ズームレンズおよびそれを用いたカメラモジュール |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180012150A (ko) | 2016-07-26 | 2018-02-05 | 자화전자(주) | 줌렌즈용 자동초점 조절장치 |
KR20210156254A (ko) | 2016-07-26 | 2021-12-24 | 자화전자(주) | 줌렌즈용 구동장치 |
Also Published As
Publication number | Publication date |
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US20080204893A1 (en) | 2008-08-28 |
US7830621B2 (en) | 2010-11-09 |
JP2008197659A (ja) | 2008-08-28 |
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