JP2008033327A - 超小型撮像光学系 - Google Patents
超小型撮像光学系 Download PDFInfo
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- JP2008033327A JP2008033327A JP2007193855A JP2007193855A JP2008033327A JP 2008033327 A JP2008033327 A JP 2008033327A JP 2007193855 A JP2007193855 A JP 2007193855A JP 2007193855 A JP2007193855 A JP 2007193855A JP 2008033327 A JP2008033327 A JP 2008033327A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 77
- 238000003384 imaging method Methods 0.000 title claims abstract description 41
- 230000005499 meniscus Effects 0.000 claims abstract description 11
- 230000014509 gene expression Effects 0.000 claims description 48
- 230000004075 alteration Effects 0.000 description 25
- 238000010586 diagram Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 201000009310 astigmatism Diseases 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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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
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four 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
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/003—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having two 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
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three 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
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more 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
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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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
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
Abstract
【解決手段】正の屈折力を有し両面が凸らんだ第1レンズ、負の屈折力を有し被写体側に凸らんだメニスカス形状の第2レンズ、正の屈折力を有し像側に凸らんだメニスカス形状の第3レンズ、および、負の屈折力を有する第4レンズとを含む。光軸方向の寸法に関して次の条件式1を満足し、上記第1レンズの屈折力に関して次の条件式2を満足する。[条件式1] 1.2<TL/f<1.3[条件式2] 0.6<f1/f<0.8 ここで、TL:開口絞りから像面までの距離 f:全体光学系の有効焦点距離 f1:第1レンズの焦点距離
【選択図】図1
Description
図1は、本発明による超小型撮像光学系の第1実施例を図示したレンズ構成図である。以下のレンズ構成図において、レンズの厚さ、大きさ、形状は、説明のためやや誇張して図示され、特に、レンズ構成図から提示された球面または非球面の形状は、一例として提示されたものでこの形状に限定されない。
条件式4の上限を外れるとコマ収差及び非点収差の補正が難しくなり、下限を外れると曲率半径が小さくなり第2レンズL2をガラス材質で製作し難くなり製作公差の影響が大きくなり量産性に障害となる。
以下の実施例1乃至3は何れも前述のように、正の屈折力を有し両面が凸らんだプラスチック材質の第1レンズL1と、負の屈折力を有し被写体側に凸らんだメニスカス形状を有するガラス材質の第2レンズL2と、正の屈折力を有し像側に凸らんだメニスカス形状を有するプラスチック材質の第3レンズL3と、負の屈折力を有するプラスチック材質の第4レンズL4とを含み、第1レンズL1と第2レンズL2との間に開口絞りASが設けられる。また、上記第4レンズL4と像面IPとの間には赤外線フィルター、カバーガラスなどに対応する光学的フィルターOFが備えられ、また像面IPはCCD、CMOSなどのイメージセンサに該当する。
正の屈折力を有し両面が凸らんだ第1レンズと、
負の屈折力を有し被写体側に凸らんだメニスカス形状の第2レンズと、
正の屈折力を有し像側に凸らんだメニスカス形状の第3レンズと、
負の屈折力を有する第4レンズと、を含み、
光軸方向の寸法に関して次の条件式1を満足し、前記第1レンズの屈折力に関して次の条件式2を満足することを特徴とする超小型結像光学系。
即ち、上記超小型結像光学系において、第1レンズ、開口絞り、第2レンズ、第3レンズ、光学的フィルターおよび第4レンズは、被写体側から像側に向かってこの順序で配置されてよい。
L2 第2レンズ
L3 第3レンズ
L4 第4レンズ
AS 開口絞り
OF 光学的フィルター
IP 像面
1、2、3、4、5、6、7、8、9、10、11、12 面番号
Claims (10)
- 前記第1レンズと第2レンズとの間に開口絞りが備えられることを特徴とする請求項1または2に記載の超小型撮像光学系。
- 前記第1レンズと第2レンズとの間に開口絞りが備えられることを特徴とする請求項7または8に記載の超小型撮像光学系。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060069788A KR100790716B1 (ko) | 2006-07-25 | 2006-07-25 | 초소형 촬상 광학계 |
KR10-2006-0069788 | 2006-07-25 |
Publications (2)
Publication Number | Publication Date |
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JP2008033327A true JP2008033327A (ja) | 2008-02-14 |
JP4737776B2 JP4737776B2 (ja) | 2011-08-03 |
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JP2007193855A Active JP4737776B2 (ja) | 2006-07-25 | 2007-07-25 | 超小型撮像光学系 |
Country Status (4)
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US (1) | US7561347B2 (ja) |
JP (1) | JP4737776B2 (ja) |
KR (1) | KR100790716B1 (ja) |
CN (1) | CN100507630C (ja) |
Cited By (9)
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JPWO2008078708A1 (ja) * | 2006-12-22 | 2010-04-22 | セイコープレシジョン株式会社 | 撮像レンズ、それを用いた撮像装置及び携帯端末装置 |
WO2011027690A1 (ja) * | 2009-09-02 | 2011-03-10 | コニカミノルタオプト株式会社 | 単焦点光学系、撮像装置およびデジタル機器 |
WO2011052370A1 (ja) * | 2009-10-26 | 2011-05-05 | コニカミノルタオプト株式会社 | 撮像レンズ |
WO2011118554A1 (ja) * | 2010-03-26 | 2011-09-29 | コニカミノルタオプト株式会社 | 撮像レンズ,撮像光学装置及びデジタル機器 |
KR101100615B1 (ko) * | 2010-02-18 | 2012-01-03 | 주식회사 코렌 | 렌즈광학계 |
JP4887507B1 (ja) * | 2011-01-31 | 2012-02-29 | 株式会社AAC Technologies Japan R&D Center | 撮像レンズ |
KR101157398B1 (ko) | 2010-06-30 | 2012-06-25 | 주식회사 코렌 | 촬영 렌즈 광학계 |
US9223062B2 (en) | 2013-11-28 | 2015-12-29 | Kantatsu Co., Ltd. | Imaging lens |
US9389395B2 (en) | 2014-06-27 | 2016-07-12 | Kantatsu Co., Ltd. | Imaging lens |
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CN101755230B (zh) * | 2008-02-13 | 2011-12-07 | 纳卢克斯株式会社 | 成像光学系统 |
JP4505765B2 (ja) * | 2008-04-23 | 2010-07-21 | ソニー株式会社 | 撮像レンズ及び撮像装置 |
CN101604065B (zh) * | 2008-06-13 | 2012-01-25 | 一品光学工业股份有限公司 | 具有短镜长的四镜片式光学取像镜头 |
US7808722B2 (en) * | 2008-07-28 | 2010-10-05 | The United States Of America As Represented By The Secretary Of The Navy | System and method for inducing far field transparency with negative index materials |
KR101056438B1 (ko) * | 2008-12-05 | 2011-08-11 | 삼성에스디아이 주식회사 | 디스플레이 패널 및 광학 필터 |
CN101762865B (zh) * | 2008-12-24 | 2011-05-25 | 大立光电股份有限公司 | 取像透镜组 |
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US9223062B2 (en) | 2013-11-28 | 2015-12-29 | Kantatsu Co., Ltd. | Imaging lens |
US9417431B2 (en) | 2013-11-28 | 2016-08-16 | Kantatsu Co., Ltd. | Imaging lens |
US9389395B2 (en) | 2014-06-27 | 2016-07-12 | Kantatsu Co., Ltd. | Imaging lens |
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KR100790716B1 (ko) | 2008-01-02 |
CN101114045A (zh) | 2008-01-30 |
US7561347B2 (en) | 2009-07-14 |
US20080024882A1 (en) | 2008-01-31 |
JP4737776B2 (ja) | 2011-08-03 |
CN100507630C (zh) | 2009-07-01 |
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