JP2014010399A5 - - Google Patents

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JP2014010399A5
JP2014010399A5 JP2012148731A JP2012148731A JP2014010399A5 JP 2014010399 A5 JP2014010399 A5 JP 2014010399A5 JP 2012148731 A JP2012148731 A JP 2012148731A JP 2012148731 A JP2012148731 A JP 2012148731A JP 2014010399 A5 JP2014010399 A5 JP 2014010399A5
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imaging optical
lens unit
imaging
focus lens
focal length
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JP2012148731A
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JP2014010399A (en
JP5755187B2 (en
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Priority claimed from US13/927,197 external-priority patent/US8988538B2/en
Publication of JP2014010399A publication Critical patent/JP2014010399A/en
Publication of JP2014010399A5 publication Critical patent/JP2014010399A5/ja
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Description

本発明の撮像装置は、数の結像光学系と、前記複数の結像光学系が形成した光学像を光電変換する少なくとも一つの撮像素子とを有し、前記複数の結像光学系は、互いに異なる焦点距離を有する結像光学系を含み、各結像光学系は、フォーカシングの際に移動するフォーカスレンズユニットと、フォーカシングのためには移動しない固定レンズユニットを有し、各フォーカスレンズユニットは各結像光学系の最も物体側に配置されており、互いに異なる焦点距離を有する結像光学系のフォーカスレンズユニットに含まれるフォーカスレンズ互いに異なる面形状を有し、以下の条件式を満たすことを特徴とする。
0.8<|ffi/ffh|<1.2
|(ΔOf+Δf)/ft|<2.1
ただし、
Δf=ffi−ffh
ΔOf=Ofi−Ofh
ftは前記複数の結像光学系の焦点距離のうち最も長い焦点距離、ffhは前記複数の結像光学系のうち任意の結像光学系hのフォーカスレンズユニットの焦点距離、ffiは前記複数の結像光学系のうち任意の結像光学系iのフォーカスレンズユニットの焦点距離、Ofhは前記結像光学系hのフォーカスレンズユニットの前側主点位置から像面までの距離、Ofiは前記結像光学系iのフォーカスレンズユニットの前側主点位置から像面までの距離である。
Imaging apparatus of the present invention includes an imaging optical system of multiple, and at least one of the image pickup element photoelectrically converting an optical science images the plurality of imaging optical system is formed, the plurality of imaging optical The system includes imaging optical systems having different focal lengths, and each imaging optical system has a focus lens unit that moves during focusing and a fixed lens unit that does not move for focusing. the lens unit is arranged on the most object side of the imaging optical system has a focus lens different surfaces shapes included in the focusing lens unit of an imaging optical system having different focal lengths from each other, the following conditional expression It is characterized by satisfying.
0.8 <| ffi / ffh | <1.2
| (ΔOf + Δf) / ft | <2.1
However,
Δf = ffi-ffh
ΔOf = Ofi-Ofh
ft longest focal length of the focal length of said plurality of imaging optical systems, ffh is the focal length of the focusing lens unit of any of the imaging optical system h of the plurality of imaging optical systems, ffi is the plurality Of the imaging optical system, the focal length of the focus lens unit of any imaging optical system i, Ofh is the distance from the front principal point position of the focus lens unit of the imaging optical system h to the image plane, and Ofi is the imaging image. This is the distance from the front principal point position of the focus lens unit of the optical system i to the image plane.

Claims (7)

  1. 数の結像光学系と、前記複数の結像光学系が形成した光学像を光電変換する少なくとも一つの撮像素子とを有し、
    前記複数の結像光学系は、互いに異なる焦点距離を有する結像光学系を含み、
    各結像光学系は、フォーカシングの際に移動するフォーカスレンズユニットと、フォーカシングのためには移動しない固定レンズユニットを有し、各フォーカスレンズユニットは各結像光学系の最も物体側に配置されており、互いに異なる焦点距離を有する結像光学系のフォーカスレンズユニットに含まれるフォーカスレンズ互いに異なる面形状を有し、
    以下の条件式を満たすことを特徴とする撮像装置。
    0.8<|ffi/ffh|<1.2
    |(ΔOf+Δf)/ft|<2.1
    ただし、
    Δf=ffi−ffh
    ΔOf=Ofi−Ofh
    ftは前記複数の結像光学系の焦点距離のうち最も長い焦点距離、ffhは前記複数の結像光学系のうち任意の結像光学系hのフォーカスレンズユニットの焦点距離、ffiは前記複数の結像光学系のうち任意の結像光学系iのフォーカスレンズユニットの焦点距離、Ofhは前記結像光学系hのフォーカスレンズユニットの前側主点位置から像面までの距離、Ofiは前記結像光学系iのフォーカスレンズユニットの前側主点位置から像面までの距離である。
    An imaging optical system number of multiple, and at least one of the image pickup element photoelectrically converting an optical science images the plurality of imaging optical system is formed,
    The plurality of imaging optical systems includes imaging optical systems having different focal lengths;
    Each imaging optical system has a focus lens unit that moves during focusing and a fixed lens unit that does not move for focusing , and each focusing lens unit is arranged on the most object side of each imaging optical system. cage, having a focus lens different surfaces shapes included in the focus lens unit of an imaging optical system having different focal lengths from each other,
    An imaging device that satisfies the following conditional expression:
    0.8 <| ffi / ffh | <1.2
    | (ΔOf + Δf) / ft | <2.1
    However,
    Δf = ffi-ffh
    ΔOf = Ofi-Ofh
    ft longest focal length of the focal length of said plurality of imaging optical systems, ffh is the focal length of the focusing lens unit of any of the imaging optical system h of the plurality of imaging optical systems, ffi is the plurality Of the imaging optical system, the focal length of the focus lens unit of any imaging optical system i, Ofh is the distance from the front principal point position of the focus lens unit of the imaging optical system h to the image plane, and Ofi is the imaging image. This is the distance from the front principal point position of the focus lens unit of the optical system i to the image plane.
  2. 前記複数の結像光学系は、互いに等しい焦点距離を有する結像光学系を有することを特徴とする請求項1に記載の撮像装置。 The imaging apparatus according to claim 1, wherein the plurality of imaging optical systems include imaging optical systems having equal focal lengths.
  3. 前記複数の結像光学系は、前記フォーカスレンズユニットが負の屈折力を有する結像光学系と前記フォーカスレンズユニットが正の屈折力を有する結像光学系を含み
    前記負の屈折力を有するフォーカスレンズユニットの前側主点位置から像面までの距離をOfn、前記正の屈折力を有するフォーカスレンズユニットの前側主点位置から像面までの距離をOfpとすると、以下の条件式を満たすことを特徴とする請求項1または2に記載の撮像装置。
    1.0<Ofn/Ofp<2.4
    Wherein the plurality of imaging optical systems includes an imaging optical system wherein the focus lens unit is the focus lens unit and an imaging optical system having a negative refractive power has a positive refractive power,
    Ofn the distance from the front principal point position to the image plane of off O over Kas lens unit that having a said negative refractive power, from the front principal point position of full O over Kas lens unit that having a said positive refractive power to the image plane The imaging apparatus according to claim 1, wherein the following conditional expression is satisfied when the distance is Ofp.
    1.0 <Ofn / Ofp <2.4
  4. 複数のフォーカスレンズユニットを一体で保持する保持部を更に有し、
    以下の条件式を満足することを特徴とする請求項1乃至3のうちいずれか1項に記載の撮像装置。
    0.5<|ffi/ft|<1.6
    It further has a holding part that holds a plurality of focus lens units together,
    The imaging apparatus according to claim 1, wherein the following conditional expression is satisfied.
    0.5 <| ffi / ft | <1.6
  5. 前記複数のフォーカスレンズユニットは、それぞれの光軸に垂直な方向に隣接する少なくとも一つのフォーカスレンズが同一の材料で構成されていることを特徴とする請求項1乃至のうちいずれか1項に記載の撮像装置。 Wherein the plurality of focusing lens units, each of any one of claims 1 to 4 at least one focusing lens adjacent in a direction perpendicular to the optical axis is characterized by being composed of the same material The imaging device described.
  6. 前記複数の結像光学系のうち、最も焦点距離の短い結像光学系のフォーカスレンズユニットは負の屈折力を有し、最も焦点距離の長い結像光学系のフォーカスレンズユニットは正の屈折力を有することを特徴とする請求項1乃至のうちいずれか1項に記載の撮像装置。 Among the plurality of imaging optical systems, the focusing lens unit of the imaging optical system with the shortest focal length has a negative refractive power, and the focusing lens unit of the imaging optical system with the longest focal length has a positive refractive power. the imaging apparatus according to any one of claims 1 to 5, characterized in that it has a.
  7. 複数の結像光学系を有し、撮像装置本体に着脱可能に装着されるレンズ装置であって、前記撮像装置本体は、前記複数の結像光学系が形成した光学像を光電変換する少なくとも一つの撮像素子を有し、
    前記複数の結像光学系は、互いに異なる焦点距離を有する結像光学系を含み、
    各結像光学系は、フォーカシングの際に移動するフォーカスレンズユニットと、フォーカシングのためには移動しない固定レンズユニットを有し、各フォーカスレンズユニットは各結像光学系の最も物体側に配置されており、互いに異なる焦点距離を有する結像光学系のフォーカスレンズユニットに含まれるフォーカスレンズ互いに異なる面形状を有し、
    以下の条件式を満たすことを特徴とするレンズ装置。
    0.8<|ffi/ffh|<1.2
    |(ΔOf+Δf)/ft|<2.1
    ただし、
    Δf=ffi−ffh
    ΔOf=Ofi−Ofh
    ftは前記複数の結像光学系の焦点距離のうち最も長い焦点距離、ffhは前記複数の結像光学系のうち任意の結像光学系hのフォーカスレンズユニットの焦点距離、ffiは前記複数の結像光学系のうち任意の結像光学系iのフォーカスレンズユニットの焦点距離、Ofhは前記結像光学系hのフォーカスレンズユニットの前側主点位置から像面までの距離、Ofiは前記結像光学系iのフォーカスレンズユニットの前側主点位置から像面までの距離である。
    A plurality of imaging optical systems, a lens device detachably attached to the imaging apparatus main body, the image pickup apparatus main body converts photoelectrically Science image the plurality of imaging optical system is formed Having at least one image sensor;
    The plurality of imaging optical systems includes imaging optical systems having different focal lengths;
    Each imaging optical system has a focus lens unit that moves during focusing and a fixed lens unit that does not move for focusing , and each focusing lens unit is arranged on the most object side of each imaging optical system. cage, having a focus lens different surfaces shapes included in the focus lens unit of an imaging optical system having different focal lengths from each other,
    A lens apparatus satisfying the following conditional expression:
    0.8 <| ffi / ffh | <1.2
    | (ΔOf + Δf) / ft | <2.1
    However,
    Δf = ffi-ffh
    ΔOf = Ofi-Ofh
    ft longest focal length of the focal length of said plurality of imaging optical systems, ffh is the focal length of the focusing lens unit of any of the imaging optical system h of the plurality of imaging optical systems, ffi is the plurality Of the imaging optical system, the focal length of the focus lens unit of any imaging optical system i, Ofh is the distance from the front principal point position of the focus lens unit of the imaging optical system h to the image plane, and Ofi is the imaging image. This is the distance from the front principal point position of the focus lens unit of the optical system i to the image plane.
JP2012148731A 2012-07-02 2012-07-02 Imaging device and lens device Active JP5755187B2 (en)

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JP2012148731A JP5755187B2 (en) 2012-07-02 2012-07-02 Imaging device and lens device
US13/927,197 US8988538B2 (en) 2012-07-02 2013-06-26 Image pickup apparatus and lens apparatus
CN201310263984.8A CN103533227B (en) 2012-07-02 2013-06-28 Image pickup apparatus and lens apparatus
EP13174470.8A EP2683154B1 (en) 2012-07-02 2013-07-01 Image pickup apparatus and lens apparatus

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JP6436783B2 (en) * 2015-01-09 2018-12-12 キヤノン株式会社 Image processing apparatus, imaging apparatus, image processing method, program, and storage medium
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