JP2005316398A5 - - Google Patents
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- JP2005316398A5 JP2005316398A5 JP2005038308A JP2005038308A JP2005316398A5 JP 2005316398 A5 JP2005316398 A5 JP 2005316398A5 JP 2005038308 A JP2005038308 A JP 2005038308A JP 2005038308 A JP2005038308 A JP 2005038308A JP 2005316398 A5 JP2005316398 A5 JP 2005316398A5
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- lens
- aspheric
- wide
- super
- image
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- 230000003287 optical Effects 0.000 claims 14
- 238000003384 imaging method Methods 0.000 claims 1
- 230000005499 meniscus Effects 0.000 claims 1
Claims (15)
以下の条件式を満足することを特徴とする超広角レンズ。
−５．０＜ｆ１／ｆ＜−０．５
ｆ ：前記超広角レンズ全体の焦点距離
ｆ１：前記負レンズ群の焦点距離 A lens group having an angle of view of 100 ° or more and having, in order from the object side, a negative refractive power, an aperture stop, and a lens group having a positive refractive power;
An ultra-wide-angle lens that satisfies the following conditional expression:
−5.0 <f1 / f <−0.5
f: focal length of the entire super wide-angle lens f1: focal length of the negative lens group
以下の条件式を満足することを特徴とする請求項１に記載の超広角レンズ。
０．２＜ｆ２／ｆｒ≦１．０
ｆ２：前記正レンズ群の焦点距離
ｆｒ：前記後群の焦点距離 The positive lens group has a front group and a rear group in order from the object side,
The super-wide-angle lens according to claim 1, wherein the following conditional expression is satisfied.
0.2 <f2 / fr ≦ 1.0
f2: focal length of the positive lens group fr: focal length of the rear group
０．０４＜ｆ／ＴＬ＜０．１２
ｆ ：前記超広角レンズ全体の焦点距離
ＴＬ：前記超広角レンズにおける最も物体側のレンズ面から像面までの光軸上の距離 The super-wide-angle lens according to claim 1, wherein the following conditional expression is satisfied.
0.04 <f / TL <0.12
f: focal length of the entire super wide angle lens TL: distance on the optical axis from the lens surface closest to the object side to the image plane in the super wide angle lens
０．０＜［（ｄｍ−ｄ０）／ｈｍ］／［（ｄ３０−ｄ０）／ｈ３０］＜３．０
ｄ０ ：前記非球面レンズの光軸上の厚さ（中心厚）
ｄｍ ：前記非球面レンズの像側のレンズ面の最大有効径の位置における光軸と平行な厚さ
ｄ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における光軸と平行な厚さ
ｈｍ ：前記非球面レンズの像側のレンズ面の最大有効半径
ｈ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における有効半径 The super wide-angle lens according to claim 4, wherein the aspheric lens satisfies the following conditional expression.
0.0 <[(dm−d0) / hm] / [(d30−d0) / h30] <3.0
d0: thickness of the aspheric lens on the optical axis (center thickness)
dm: Thickness parallel to the optical axis at the position of the maximum effective diameter of the lens surface on the image side of the aspheric lens d30: The optical axis at the position of 30% of the total effective diameter of the lens surface on the image side of the aspheric lens Parallel thickness hm: Maximum effective radius of the image-side lens surface of the aspheric lens h30: Effective radius at 30% of the total effective diameter of the image-side lens surface of the aspheric lens
前記負レンズ群は、負の屈折力を有する非球面レンズを少なくとも１枚有し、
以下の条件を満足することを特徴とする超広角レンズ。
−５．０＜ｆ１／ｆ＜−０．５
０．０＜［（ｄｍ−ｄ０）／ｈｍ］／［（ｄ３０−ｄ０）／ｈ３０］＜３．０
ｆ ：前記超広角レンズ全体の焦点距離
ｆ１：前記負レンズ群の焦点距離
ｄ０ ：前記非球面レンズの光軸上の厚さ（中心厚）
ｄｍ ：前記非球面レンズの像側のレンズ面の最大有効径の位置における光軸と平行な厚さ
ｄ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における光軸と平行な厚さ
ｈｍ ：前記非球面レンズの像側のレンズ面の最大有効半径
ｈ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における有効半径 In order from the object side, a lens group having a negative refractive power, an aperture stop, and a lens group having a positive refractive power,
The negative lens group has at least one aspheric lens having negative refractive power,
An ultra-wide-angle lens that satisfies the following conditions.
−5.0 <f1 / f <−0.5
0.0 <[(dm−d0) / hm] / [(d30−d0) / h30] <3.0
f: focal length of the entire super wide-angle lens f1: focal length of the negative lens group d0: thickness on the optical axis of the aspherical lens (center thickness)
dm: Thickness parallel to the optical axis at the position of the maximum effective diameter of the lens surface on the image side of the aspheric lens d30: The optical axis at the position of 30% of the total effective diameter of the lens surface on the image side of the aspheric lens Parallel thickness hm: Maximum effective radius of the image-side lens surface of the aspheric lens h30: Effective radius at 30% of the total effective diameter of the image-side lens surface of the aspheric lens
以下の条件式を満足することを特徴とする請求項６に記載の超広角レンズ。
０．２＜ｆ２／ｆｒ≦１．０
ｆ２：前記正レンズ群の焦点距離
ｆｒ：前記後群の焦点距離 The positive lens group has a front group and a rear group in order from the object side,
The super-wide-angle lens according to claim 6, wherein the following conditional expression is satisfied.
0.2 <f2 / fr ≦ 1.0
f2: focal length of the positive lens group fr: focal length of the rear group
０．０４＜ｆ／ＴＬ＜０．１２
ｆ ：前記超広角レンズ全体の焦点距離
ＴＬ：前記超広角レンズにおける最も物体側のレンズ面から像面までの光軸上の距離 The super-wide-angle lens according to claim 6 or 7, wherein the following conditional expression is satisfied.
0.04 <f / TL <0.12
f: focal length of the entire super wide angle lens TL: distance on the optical axis from the lens surface closest to the object side to the image plane in the super wide angle lens
前記後群は合焦のために移動することを特徴とする請求項１から１１のいずれか１項に記載の超広角レンズ。 The super-wide-angle lens according to claim 1, wherein the rear group moves for focusing.
以下の条件式を満足する非球面レンズが、前記複数枚の非球面レンズのうち最も物体側に配置されていることを特徴とする請求項１から１２のいずれか１項に記載の超広角レンズ。 The super wide-angle lens according to any one of claims 1 to 12, wherein an aspheric lens that satisfies the following conditional expression is disposed closest to the object side among the plurality of aspheric lenses. .
０．０＜［（ｄｍ−ｄ０）／ｈｍ］／［（ｄ３０−ｄ０）／ｈ３０］＜３．０ 0.0 <[(dm−d0) / hm] / [(d30−d0) / h30] <3.0
ｄ０ ：前記非球面レンズの光軸上の厚さ（中心厚）d0: thickness of the aspheric lens on the optical axis (center thickness)
ｄｍ ：前記非球面レンズの像側のレンズ面の最大有効径の位置における光軸と平行な厚さdm: Thickness parallel to the optical axis at the position of the maximum effective diameter of the image-side lens surface of the aspheric lens
ｄ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における光軸と平行な厚さd30: thickness parallel to the optical axis at 30% of the total effective diameter of the image-side lens surface of the aspheric lens
ｈｍ ：前記非球面レンズの像側のレンズ面の最大有効半径hm: Maximum effective radius of the image side lens surface of the aspheric lens
ｈ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における有効半径h30: Effective radius at 30% of the total effective diameter of the image-side lens surface of the aspheric lens
０．０＜［（ｄｍ−ｄ０）／ｈｍ］／［（ｄ３０−ｄ０）／ｈ３０］＜３．０ 0.0 <[(dm−d0) / hm] / [(d30−d0) / h30] <3.0
ｄ０ ：前記非球面レンズの光軸上の厚さ（中心厚）d0: thickness of the aspheric lens on the optical axis (center thickness)
ｄｍ ：前記非球面レンズの像側のレンズ面の最大有効径の位置における光軸と平行な厚さdm: Thickness parallel to the optical axis at the position of the maximum effective diameter of the image-side lens surface of the aspheric lens
ｄ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における光軸と平行な厚さd30: thickness parallel to the optical axis at 30% of the total effective diameter of the image-side lens surface of the aspheric lens
ｈｍ ：前記非球面レンズの像側のレンズ面の最大有効半径hm: Maximum effective radius of the image side lens surface of the aspheric lens
ｈ３０：前記非球面レンズの像側のレンズ面の全有効径の３割位置における有効半径h30: Effective radius at 30% of the total effective diameter of the image-side lens surface of the aspheric lens
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005038308A JP4862263B2 (en) | 2004-03-31 | 2005-02-15 | Super wide-angle lens and photographing apparatus equipped with the super-wide angle lens |
| US11/092,919 US7239456B2 (en) | 2004-03-31 | 2005-03-30 | Super wide-angle lens system and image-capturing device using the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004105342 | 2004-03-31 | ||
| JP2004105342 | 2004-03-31 | ||
| JP2005038308A JP4862263B2 (en) | 2004-03-31 | 2005-02-15 | Super wide-angle lens and photographing apparatus equipped with the super-wide angle lens |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2005316398A JP2005316398A (en) | 2005-11-10 |
| JP2005316398A5 true JP2005316398A5 (en) | 2008-03-21 |
| JP4862263B2 JP4862263B2 (en) | 2012-01-25 |
Family
ID=35443837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005038308A Expired - Fee Related JP4862263B2 (en) | 2004-03-31 | 2005-02-15 | Super wide-angle lens and photographing apparatus equipped with the super-wide angle lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4862263B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4950645B2 (en) * | 2006-12-07 | 2012-06-13 | キヤノン株式会社 | Optical system and imaging apparatus having the same |
| JP2010072639A (en) * | 2008-08-22 | 2010-04-02 | Ricoh Co Ltd | Imaging optical system, camera device, and personal digital assistant |
| JP5510770B2 (en) | 2008-09-18 | 2014-06-04 | 株式会社ニコン | Photographic lens, optical device equipped with this photographic lens |
| JP5525790B2 (en) * | 2009-09-30 | 2014-06-18 | オリンパス株式会社 | Optical system |
| US8699143B2 (en) | 2009-11-10 | 2014-04-15 | Nikon Corporation | Wide-angle lens, imaging apparatus, and method for manufacturing wide-angle lens |
| WO2011077716A1 (en) | 2009-12-25 | 2011-06-30 | パナソニック株式会社 | Image-capturing optical system, interchangeable lens device, and camera system |
| US8830592B2 (en) | 2010-06-23 | 2014-09-09 | Nikon Corporation | Zoom lens, imaging apparatus, and method for manufacturing zoom lens |
| CN104755982B (en) | 2012-10-31 | 2017-05-24 | 富士胶片株式会社 | Imaging lens and imaging device |
| JP6452285B2 (en) * | 2013-11-22 | 2019-01-16 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| JP6507471B2 (en) * | 2014-02-17 | 2019-05-08 | 株式会社ニコン | Optical system and optical device |
| JP6569079B2 (en) * | 2014-09-16 | 2019-09-04 | パナソニックＩｐマネジメント株式会社 | Wide-angle lens system and imaging device |
| JP6746553B2 (en) * | 2017-10-30 | 2020-08-26 | キヤノン株式会社 | Imaging optical system, image projection device, and imaging device |
Family Cites Families (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5030457B2 (en) * | 1971-12-07 | 1975-10-01 | ||
| JPS51122435A (en) * | 1975-04-04 | 1976-10-26 | Asahi Optical Co Ltd | Wide angle photographic lens of a bright small size retro-focus type |
| JPS5355119A (en) * | 1976-10-29 | 1978-05-19 | Canon Inc | Super wide angle lens of retrofocus |
| JP2646350B2 (en) * | 1986-01-28 | 1997-08-27 | オリンパス光学工業株式会社 | Endoscope objective lens |
| JPS6317421A (en) * | 1986-07-09 | 1988-01-25 | Canon Inc | Fisheye lens |
| JPH01113714A (en) * | 1987-10-27 | 1989-05-02 | Matsushita Electric Ind Co Ltd | Ultrawide angle lens |
| JPH02248910A (en) * | 1989-03-23 | 1990-10-04 | Sigma:Kk | Fish-eye lens |
| JPH05188287A (en) * | 1992-01-10 | 1993-07-30 | Canon Inc | Retrofocus type lens |
| JPH0777651A (en) * | 1993-09-09 | 1995-03-20 | Nikon Corp | Retrofocus type wideangle lens |
| JP3752025B2 (en) * | 1995-08-25 | 2006-03-08 | ペンタックス株式会社 | Large aperture ultra wide angle lens system |
| JPH0990218A (en) * | 1995-09-20 | 1997-04-04 | Casio Comput Co Ltd | Photographic lens |
| JPH09133861A (en) * | 1995-11-10 | 1997-05-20 | Ricoh Opt Ind Co Ltd | Projection lens |
| JPH10115777A (en) * | 1996-10-11 | 1998-05-06 | Olympus Optical Co Ltd | Photographic lens |
| JPH10170824A (en) * | 1996-12-16 | 1998-06-26 | Ricoh Opt Ind Co Ltd | Projection lens |
| JPH1184232A (en) * | 1997-09-02 | 1999-03-26 | Olympus Optical Co Ltd | Wide angle lens |
| JPH11194266A (en) * | 1997-10-29 | 1999-07-21 | Fuji Photo Optical Co Ltd | Wide angle lens |
| JPH11142728A (en) * | 1997-11-05 | 1999-05-28 | Nikon Corp | Wide-angle lens |
| JPH11202195A (en) * | 1998-01-19 | 1999-07-30 | Minolta Co Ltd | Large-aperture wide-angle lens system |
| JP4007468B2 (en) * | 1998-07-23 | 2007-11-14 | フジノン株式会社 | Wide-angle lens with long back focus |
| JP4491845B2 (en) * | 1998-08-17 | 2010-06-30 | 株式会社ニコン | Imaging optics |
| JP3588283B2 (en) * | 1999-09-24 | 2004-11-10 | 松下電器産業株式会社 | Projection lens and projector using it |
| JP2001208967A (en) * | 2000-01-25 | 2001-08-03 | Fuji Photo Optical Co Ltd | Compact large-aperture wide-angle lens |
| JP2001356262A (en) * | 2000-06-15 | 2001-12-26 | Fuji Photo Optical Co Ltd | Retrofocus wide-angle lens and lens device using the same |
| US6563650B2 (en) * | 2001-01-17 | 2003-05-13 | 3M Innovative Properties Company | Compact, telecentric projection lenses for use with pixelized panels |
| JP4744711B2 (en) * | 2001-04-02 | 2011-08-10 | 富士フイルム株式会社 | Image capture lens |
| JP2002365534A (en) * | 2001-06-05 | 2002-12-18 | Chinontec Kk | Projection lens device and projector device |
| JP2003121735A (en) * | 2001-10-17 | 2003-04-23 | Nikon Corp | Super wide angle lens |
| JP2003140038A (en) * | 2001-10-30 | 2003-05-14 | Kyocera Corp | Wide angle lens |
| JP2003195164A (en) * | 2001-12-27 | 2003-07-09 | Nikon Corp | Wide-angle projection lens, and projection type display device using wide-angle projection lens |
| JP4349553B2 (en) * | 2002-01-17 | 2009-10-21 | フジノン株式会社 | Fixed-focus wide-angle lens with long back focus |
| JP4132838B2 (en) * | 2002-01-29 | 2008-08-13 | フジノン株式会社 | Imaging lens and imaging apparatus |
| JP2003270530A (en) * | 2002-03-14 | 2003-09-25 | Fuji Photo Optical Co Ltd | Wide angle lens having aspheric synthetic resin lens |
| JP2003307674A (en) * | 2002-04-18 | 2003-10-31 | Kyocera Corp | Superwide angle lens |
| JP4106980B2 (en) * | 2002-06-25 | 2008-06-25 | 京セラ株式会社 | Super wide angle lens |
| JP4337314B2 (en) * | 2002-08-01 | 2009-09-30 | 株式会社ニコン | Fisheye lens |
| JP4186560B2 (en) * | 2002-09-12 | 2008-11-26 | コニカミノルタオプト株式会社 | Super wide angle lens |
| JP4144423B2 (en) * | 2003-04-28 | 2008-09-03 | マツダ株式会社 | Engine part failure prediction system and control program therefor |
| JP2005181852A (en) * | 2003-12-22 | 2005-07-07 | Olympus Corp | Photographing lens system and photographing apparatus having the system |
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2005
- 2005-02-15 JP JP2005038308A patent/JP4862263B2/en not_active Expired - Fee Related