JP2006098961A5 - - Google Patents

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Publication number
JP2006098961A5
JP2006098961A5 JP2004287420A JP2004287420A JP2006098961A5 JP 2006098961 A5 JP2006098961 A5 JP 2006098961A5 JP 2004287420 A JP2004287420 A JP 2004287420A JP 2004287420 A JP2004287420 A JP 2004287420A JP 2006098961 A5 JP2006098961 A5 JP 2006098961A5
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JP
Japan
Prior art keywords
lens
lens group
zoom
zoom lens
refractive power
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JP2004287420A
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Japanese (ja)
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JP2006098961A (en
JP4681842B2 (en
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Publication date
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Priority to JP2004287420A priority Critical patent/JP4681842B2/en
Priority claimed from JP2004287420A external-priority patent/JP4681842B2/en
Priority to US11/241,657 priority patent/US7248418B2/en
Priority to CNB2005101070479A priority patent/CN100510830C/en
Publication of JP2006098961A publication Critical patent/JP2006098961A/en
Publication of JP2006098961A5 publication Critical patent/JP2006098961A5/ja
Application granted granted Critical
Publication of JP4681842B2 publication Critical patent/JP4681842B2/en
Expired - Fee Related legal-status Critical Current
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Claims (9)

物体側より像側へ順に、負の屈折力のレンズ成分を含む第１レンズ群、正の屈折力の第２レンズ群、負の屈折力の第３レンズ群より構成され、広角端に対して望遠端のズーム位置における第１レンズ群と第２レンズ群の間隔及び第２レンズ群と第３レンズ群の間隔がいずれも小さくなるように第２、第３レンズ群を移動させてズーミングを行うズームレンズであって、
第ｉレンズ群の焦点距離をＦｉ、広角端における全系の焦点距離をＦｗとするとき
−０．５ ＜ Ｆｗ／Ｆ１ ＜ ０．１
０．９ ＜ Ｆ２／Ｆｗ ＜ １．６
０．９ ＜ ｜Ｆ３／Ｆｗ｜ ＜ １．９
なる条件を満足することを特徴とするズームレンズ。 In order from the object side to the image side, a first lens group including a lens component having negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, with respect to the wide-angle end Zooming is performed by moving the second and third lens groups so that the distance between the first lens group and the second lens group at the zoom position at the telephoto end and the distance between the second lens group and the third lens group are both reduced. A zoom lens,
When the focal length of the i-th lens group is Fi, and the focal length of the entire system at the wide angle end is Fw, −0.5 <Fw / F1 <0.1.
0.9 <F2 / Fw <1.6
0.9 <| F3 / Fw | <1.9
A zoom lens characterized by satisfying the following conditions: 前記第１レンズ群中に光軸上の光束を９０度偏向させる反射部材が設けられていることを特徴とする請求項１のズームレンズ。   2. The zoom lens according to claim 1, wherein a reflecting member for deflecting a light beam on the optical axis by 90 degrees is provided in the first lens group. 物体側より像側へ順に、負の屈折力のレンズ成分を含む第１レンズ群、正の屈折力の第２レンズ群、負の屈折力の第３レンズ群より構成され、広角端に対して望遠端のズーム位置における第１レンズ群と第２レンズ群の間隔及び第２レンズ群と第３レンズ群の間隔がいずれも小さくなるように第２、第３レンズ群を移動させてズーミングを行うズームレンズであって、
該第１レンズ群はズーミングの為には不動であり、該第１レンズ群中に光軸上の光束を略９０°偏向させる反射部材が設けられていることを特徴とするズームレンズ。 In order from the object side to the image side, a first lens group including a lens component having negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, with respect to the wide-angle end Zooming is performed by moving the second and third lens groups so that the distance between the first lens group and the second lens group at the zoom position at the telephoto end and the distance between the second lens group and the third lens group are both reduced. A zoom lens,
The zoom lens according to claim 1, wherein the first lens group does not move for zooming, and a reflecting member for deflecting a light beam on the optical axis by approximately 90 ° is provided in the first lens group. 前記第３レンズ群の広角端のズーム位置における横倍率をβ３ｗとするとき、
１＜ β３ｗ ＜ １．６
なる条件を満足することを特徴とする請求項１、２又は３のズームレンズ。 When the lateral magnification at the zoom position at the wide-angle end of the third lens group is β3w,
1 <β3w <1.6
The zoom lens according to claim 1, wherein the zoom lens satisfies the following condition. 前記第２レンズ群と第３レンズ群の焦点距離を各々Ｆ２、Ｆ３とするとき、
０．６ ＜ ｜Ｆ２／Ｆ３｜ ＜ １．４
なる条件を満足することを特徴とする請求項１から４のいずれか１項のズームレンズ。 When the focal lengths of the second lens group and the third lens group are F2 and F3, respectively.
0.6 <| F2 / F3 | <1.4
The zoom lens according to claim 1, wherein the following condition is satisfied. 前記第２レンズ及び第３レンズ群はそれぞれ非球面形状の面を１以上有していることを特徴とする請求項１から５のいずれか１項のズームレンズ。   6. The zoom lens according to claim 1, wherein each of the second lens group and the third lens group has one or more aspherical surfaces. 前記第１レンズと第２レンズ群との間に開口絞りを有していることを特徴とする請求項１から６のいずれか１項のズームレンズ。   The zoom lens according to claim 1, further comprising an aperture stop between the first lens and the second lens group. 固体撮像素子に像を形成する為の光学系であることを特徴とする請求項１から７のいずれか１項のズームレンズ。   The zoom lens according to claim 1, wherein the zoom lens is an optical system for forming an image on a solid-state imaging device. 請求項１〜８のいずれか１項のズームレンズと、該ズームレンズによって形成された像を受光する固体撮像素子とを有していることを特徴とする撮像装置。   An image pickup apparatus comprising: the zoom lens according to claim 1; and a solid-state image sensor that receives an image formed by the zoom lens.
JP2004287420A 2004-09-30 2004-09-30 Zoom lens and imaging apparatus having the same Expired - Fee Related JP4681842B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004287420A JP4681842B2 (en) 2004-09-30 2004-09-30 Zoom lens and imaging apparatus having the same
US11/241,657 US7248418B2 (en) 2004-09-30 2005-09-29 Zoom lens system and image pickup apparatus including the same
CNB2005101070479A CN100510830C (en) 2004-09-30 2005-09-29 Zoom lens system and image pickup apparatus including the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004287420A JP4681842B2 (en) 2004-09-30 2004-09-30 Zoom lens and imaging apparatus having the same

Publications (3)

Publication Number Publication Date
JP2006098961A JP2006098961A (en) 2006-04-13
JP2006098961A5 true JP2006098961A5 (en) 2007-11-15
JP4681842B2 JP4681842B2 (en) 2011-05-11

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JP2004287420A Expired - Fee Related JP4681842B2 (en) 2004-09-30 2004-09-30 Zoom lens and imaging apparatus having the same

Country Status (2)

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JP (1) JP4681842B2 (en)
CN (1) CN100510830C (en)

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JP5484687B2 (en) * 2008-04-11 2014-05-07 オリンパスイメージング株式会社 Image pickup apparatus having a zoom lens
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JP6384939B1 (en) * 2017-10-19 2018-09-05 エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． Imaging optical lens
JP6377233B1 (en) * 2017-10-19 2018-08-22 エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． Imaging optical lens
JP6377236B1 (en) * 2017-10-19 2018-08-22 エーエーシー テクノロジーズ ピーティーイー リミテッドＡａｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｐｔｅ．Ｌｔｄ． Imaging optical lens
JP6524202B1 (en) * 2017-11-18 2019-06-05 エーエーシー テクノロジーズ ピーティーイー リミテッド Imaging optical lens
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