JP2009175648A5 - - Google Patents
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- JP2009175648A5 JP2009175648A5 JP2008036038A JP2008036038A JP2009175648A5 JP 2009175648 A5 JP2009175648 A5 JP 2009175648A5 JP 2008036038 A JP2008036038 A JP 2008036038A JP 2008036038 A JP2008036038 A JP 2008036038A JP 2009175648 A5 JP2009175648 A5 JP 2009175648A5
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- 230000003287 optical Effects 0.000 claims 24
- 230000014509 gene expression Effects 0.000 claims 20
- 238000003384 imaging method Methods 0.000 claims 6
Claims (20)
前記第５レンズ群は、負の屈折力を有し固定された固定群と、正の屈折力を有し光軸に略直交する方向へ移動可能とされた可動群とが物体側より像側へ順に位置されて成り、
前記第５レンズ群の可動群が光軸に略直交する方向へ移動されることにより、像面上に形成される像が光軸に略直交する方向へ移動可能とされ、
以下の条件式（１）及び条件式（２）を満足するように構成された
ことを特徴とするズームレンズ。
（１）０．６＜｜ｆ５１／ｆ５２｜＜１．０
（２）０．２＜ｆｗ／ｆ５２＜０．５
但し、
ｆ５１：第５レンズ群の固定群の焦点距離
ｆ５２：第５レンズ群の可動群の焦点距離
ｆｗ：広角端におけるレンズ全系の焦点距離
とする。 A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has positive refractive power and is movable in the direction of the optical axis in order to correct and focus the focal position by zooming, and positive refraction A zoom lens having a fifth lens group having power arranged in order from the object side to the image side,
The fifth lens group has a fixed group having a negative refractive power and a movable group having a positive refractive power and movable in a direction substantially orthogonal to the optical axis from the object side to the image side. Are arranged in order,
When the movable group of the fifth lens group is moved in a direction substantially orthogonal to the optical axis, an image formed on the image plane can be moved in a direction substantially orthogonal to the optical axis,
A zoom lens configured to satisfy the following conditional expression (1) and conditional expression (2):
(1) 0.6 <| f51 / f52 | <1.0
(2) 0.2 <fw / f52 <0.5
However,
f51: focal length of the fixed group of the fifth lens group f52: focal length of the movable group of the fifth lens group fw: focal length of the entire lens system at the wide angle end.
ことを特徴とする請求項１に記載のズームレンズ。
（３）２．０＜ｆｔ／ｆ５２＜５．０
但し、
ｆｔ：望遠端におけるレンズ全系の焦点距離
とする。 The zoom lens according to claim 1, wherein the movable group of the fifth lens group is configured to satisfy the following conditional expression (3).
(3) 2.0 <ft / f52 <5.0
However,
ft: The focal length of the entire lens system at the telephoto end.
ことを特徴とする請求項１に記載のズームレンズ。
（４）ｆｉ＜ｆ５
但し、
ｆｉ：第ｉレンズ群の焦点距離（ｉ＝１〜４）
ｆ５：第５レンズ群の焦点距離
とする。 The zoom lens according to claim 1, wherein the fifth lens group is configured to satisfy the following conditional expression (4).
(4) fi <f5
However,
fi: focal length of i-th lens group (i = 1 to 4)
f5: The focal length of the fifth lens group.
ことを特徴とする請求項１に記載のズームレンズ。 The fixed group of the fifth lens group includes an image from the object side of a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a negative refractive power. The zoom lens according to claim 1, comprising a cemented lens that is sequentially cemented to the side.
ことを特徴とする請求項１に記載のズームレンズ。 The movable group of the fifth lens group is composed of a cemented lens in which a fourth lens having a positive refractive power and a fifth lens having a negative refractive power are cemented in order from the object side to the image side. The zoom lens according to claim 1.
前記開口絞りより像側に配置されたレンズ群のうち少なくとも一つのレンズ群が３枚のレンズを接合して構成した３枚接合レンズを有し、
以下の条件式（５）及び条件式（６）を満足するように構成された
ことを特徴とする請求項１に記載のズームレンズ。
（５）ｆｍ＜０
（６）νｍ＜３０
但し、
ｆｍ：３枚接合レンズにおける中間レンズの焦点距離
νｍ：３枚接合レンズにおける中間レンズのアッベ数
とする。 An aperture stop is disposed at a position closer to the image side than the second lens group and closer to the object side than the fifth lens group,
At least one lens group among the lens groups arranged on the image side from the aperture stop has a three-piece cemented lens constituted by cementing three lenses,
The zoom lens according to claim 1, wherein the zoom lens is configured to satisfy the following conditional expressions (5) and (6).
(5) fm <0
(6) νm <30
However,
fm: focal length of the intermediate lens in the three-piece cemented lens νm: the Abbe number of the intermediate lens in the three-piece cemented lens.
ことを特徴とする請求項６に記載のズームレンズ。 The zoom lens according to claim 6, wherein the three-piece cemented lens is configured in the fifth lens group.
ことを特徴とする請求項６に記載のズームレンズ。 A first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a negative refractive power, in which the three-piece cemented lens is disposed in order from the object side to the image side. The zoom lens according to claim 6, wherein the zoom lens is configured.
ことを特徴とする請求項６に記載のズームレンズ。 The zoom lens according to claim 6, wherein at least one surface of the three-piece cemented lens is formed as an aspheric surface.
以下の条件式（５）及び条件式（６）を満足するように構成された
ことを特徴とする請求項１に記載のズームレンズ。
（５）ｆｍ＜０
（６）νｍ＜３０
但し、
ｆｍ：３枚接合レンズにおける中間レンズの焦点距離
νｍ：３枚接合レンズにおける中間レンズのアッベ数
とする。 The fifth lens group is configured to have a three-piece cemented lens having a negative refractive power and a lens group having a positive refractive power,
The zoom lens according to claim 1, wherein the zoom lens is configured to satisfy the following conditional expressions (5) and (6).
(5) fm <0
(6) νm <30
However,
fm: focal length of the intermediate lens in the three-piece cemented lens νm: the Abbe number of the intermediate lens in the three-piece cemented lens.
前記ズームレンズは、
正の屈折力を有し固定された第１レンズ群と、負の屈折力を有し少なくとも変倍を行うために光軸方向へ移動可能とされた第２レンズ群と、正の屈折力を有し固定された第３レンズ群と、正の屈折力を有し変倍による焦点位置の補正及び合焦を行うために光軸方向へ移動可能とされた第４レンズ群と、正の屈折力を有する第５レンズ群とが物体側より像側へ順に配置されて構成され、
前記第５レンズ群は、負の屈折力を有し固定された固定群と、正の屈折力を有し光軸に略直交する方向へ移動可能とされた可動群とが物体側より像側へ順に位置されて成り、
前記第５レンズ群の可動群が光軸に略直交する方向へ移動されることにより、像面上に形成される像が光軸に略直交する方向へ移動可能とされ、
以下の条件式（１）及び条件式（２）を満足するように構成された
ことを特徴とする撮像装置。
（１）０．６＜｜ｆ５１／ｆ５２｜＜１．０
（２）０．２＜ｆｗ／ｆ５２＜０．５
但し、
ｆ５１：第５レンズ群の固定群の焦点距離
ｆ５２：第５レンズ群の可動群の焦点距離
ｆｗ：広角端におけるレンズ全系の焦点距離
とする。 An imaging apparatus comprising a zoom lens and an image sensor that converts an optical image formed by the zoom lens into an electrical signal,
The zoom lens is
A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has positive refractive power and is movable in the direction of the optical axis in order to correct and focus the focal position by zooming, and positive refraction A fifth lens group having power is arranged in order from the object side to the image side,
The fifth lens group has a fixed group having a negative refractive power and a movable group having a positive refractive power and movable in a direction substantially orthogonal to the optical axis from the object side to the image side. Are arranged in order,
When the movable group of the fifth lens group is moved in a direction substantially orthogonal to the optical axis, an image formed on the image plane can be moved in a direction substantially orthogonal to the optical axis,
An imaging apparatus configured to satisfy the following conditional expression (1) and conditional expression (2):
(1) 0.6 <| f51 / f52 | <1.0
(2) 0.2 <fw / f52 <0.5
However,
f51: focal length of the fixed group of the fifth lens group f52: focal length of the movable group of the fifth lens group fw: focal length of the entire lens system at the wide angle end.
前記第５レンズ群は、負の屈折力を有し固定された固定群と、正の屈折力を有し光軸に略直交する方向へ移動可能とされた可動群とが物体側より像側へ順に位置されて成り、
前記第５レンズ群の固定群を、正の屈折力を有する第１のレンズと、負の屈折力を有する第２のレンズと、負の屈折力を有する第３のレンズとが物体側から像側へ順に接合された接合レンズによって構成し、
前記第５レンズ群の可動群を、正の屈折力を有する第４のレンズと、負の屈折力を有する第５のレンズとが物体側から像側へ順に接合された接合レンズによって構成し、
前記第５レンズ群の可動群が光軸に略直交する方向へ移動されることにより、像面上に形成される像が光軸に略直交する方向へ移動可能とされ、
以下の条件式（１）及び条件式（２）を満足するように構成された
ことを特徴とするズームレンズ。
（１）０．６＜｜ｆ５１／ｆ５２｜＜１．０
（２）０．２＜ｆｗ／ｆ５２＜０．５
但し、
ｆ５１：第５レンズ群の固定群の焦点距離
ｆ５２：第５レンズ群の可動群の焦点距離
ｆｗ：広角端におけるレンズ全系の焦点距離
とする。 A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has a positive refractive power and is movable in the optical axis direction in order to perform focus position correction and focusing by zooming, and positive refraction A zoom lens having a fifth lens group having power arranged in order from the object side to the image side,
The fifth lens group has a fixed group having a negative refractive power and a movable group having a positive refractive power and movable in a direction substantially orthogonal to the optical axis from the object side to the image side. Are arranged in order,
The fixed group of the fifth lens group includes an image from the object side of a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a negative refractive power. Consists of cemented lenses that are sequentially cemented to the side,
The movable group of the fifth lens group is constituted by a cemented lens in which a fourth lens having a positive refractive power and a fifth lens having a negative refractive power are sequentially joined from the object side to the image side,
When the movable group of the fifth lens group is moved in a direction substantially orthogonal to the optical axis, an image formed on the image plane can be moved in a direction substantially orthogonal to the optical axis,
A zoom lens configured to satisfy the following conditional expression (1) and conditional expression (2):
(1) 0.6 <| f51 / f52 | <1.0
(2) 0.2 <fw / f52 <0.5
However,
f51: focal length of the fixed group of the fifth lens group f52: focal length of the movable group of the fifth lens group fw: focal length of the entire lens system at the wide angle end.
ことを特徴とする請求項１２に記載のズームレンズ。
（３）２．０＜ｆｔ／ｆ５２＜５．０
但し、
ｆｔ：望遠端におけるレンズ全系の焦点距離
とする。 The zoom lens according to claim 12, wherein the movable group of the fifth lens group is configured to satisfy the following conditional expression (3).
(3) 2.0 <ft / f52 <5.0
However,
ft: The focal length of the entire lens system at the telephoto end.
ことを特徴とする請求項１２に記載のズームレンズ。
（４）ｆｉ＜ｆ５
但し、
ｆｉ：第ｉレンズ群の焦点距離（ｉ＝１〜４）
ｆ５：第５レンズ群の焦点距離
とする。 The zoom lens according to claim 12, wherein the fifth lens group is configured to satisfy the following conditional expression (4).
(4) fi <f5
However,
fi: focal length of i-th lens group (i = 1 to 4)
f5: The focal length of the fifth lens group.
前記ズームレンズは、
正の屈折力を有し固定された第１レンズ群と、負の屈折力を有し少なくとも変倍を行うために光軸方向へ移動可能とされた第２レンズ群と、正の屈折力を有し固定された第３レンズ群と、正の屈折力を有し変倍による焦点位置の補正及び合焦を行うために光軸方向へ移動可能とされた第４レンズ群と、正の屈折力を有する第５レンズ群とが物体側より像側へ順に配置されて構成され、
前記第５レンズ群は、負の屈折力を有し固定された固定群と、正の屈折力を有し光軸に略直交する方向へ移動可能とされた可動群とが物体側より像側へ順に位置されて成り、
前記第５レンズ群の固定群を、正の屈折力を有する第１のレンズと、負の屈折力を有する第２のレンズと、負の屈折力を有する第３のレンズとが物体側から像側へ順に接合された接合レンズによって構成し、
前記第５レンズ群の可動群を、正の屈折力を有する第４のレンズと、負の屈折力を有する第５のレンズとが物体側から像側へ順に接合された接合レンズによって構成し、
前記第５レンズ群の可動群が光軸に略直交する方向へ移動されることにより、像面上に形成される像が光軸に略直交する方向へ移動可能とされ、
以下の条件式（１）及び条件式（２）を満足するように構成された
ことを特徴とする撮像装置。
（１）０．６＜｜ｆ５１／ｆ５２｜＜１．０
（２）０．２＜ｆｗ／ｆ５２＜０．５
但し、
ｆ５１：第５レンズ群の固定群の焦点距離
ｆ５２：第５レンズ群の可動群の焦点距離
ｆｗ：広角端におけるレンズ全系の焦点距離
とする。 An imaging apparatus comprising a zoom lens and an image sensor that converts an optical image formed by the zoom lens into an electrical signal,
The zoom lens is
A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has positive refractive power and is movable in the direction of the optical axis in order to correct and focus the focal position by zooming, and positive refraction A fifth lens group having power is arranged in order from the object side to the image side,
The fifth lens group has a fixed group having a negative refractive power and a movable group having a positive refractive power and movable in a direction substantially orthogonal to the optical axis from the object side to the image side. Are arranged in order,
The fixed group of the fifth lens group includes an image from the object side of a first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a negative refractive power. Consists of cemented lenses that are sequentially cemented to the side,
The movable group of the fifth lens group is constituted by a cemented lens in which a fourth lens having a positive refractive power and a fifth lens having a negative refractive power are sequentially joined from the object side to the image side,
When the movable group of the fifth lens group is moved in a direction substantially orthogonal to the optical axis, an image formed on the image plane can be moved in a direction substantially orthogonal to the optical axis,
An imaging apparatus configured to satisfy the following conditional expression (1) and conditional expression (2):
(1) 0.6 <| f51 / f52 | <1.0
(2) 0.2 <fw / f52 <0.5
However,
f51: focal length of the fixed group of the fifth lens group f52: focal length of the movable group of the fifth lens group fw: focal length of the entire lens system at the wide angle end.
前記第２レンズ群より像側かつ前記第５レンズ群より物体側の位置に開口絞りを配置し、
前記開口絞りより像側に配置されたレンズ群のうち少なくとも一つのレンズ群が３枚のレンズを接合して構成した３枚接合レンズを有し、
以下の条件式（５）及び条件式（６）を満足するように構成された
ことを特徴とするズームレンズ。
（５）ｆｍ＜０
（６）νｍ＜３０
但し、
ｆｍ：３枚接合レンズにおける中間レンズの焦点距離
νｍ：３枚接合レンズにおける中間レンズのアッベ数
とする。 A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has positive refractive power and is movable in the direction of the optical axis in order to correct and focus the focal position by zooming, and positive refraction A zoom lens having a fifth lens group having power arranged in order from the object side to the image side,
An aperture stop is disposed at a position closer to the image side than the second lens group and closer to the object side than the fifth lens group,
At least one lens group among the lens groups arranged on the image side from the aperture stop has a three-piece cemented lens constituted by cementing three lenses,
A zoom lens configured to satisfy the following conditional expressions (5) and (6):
(5) fm <0
(6) νm <30
However,
fm: focal length of the intermediate lens in the three-piece cemented lens νm: the Abbe number of the intermediate lens in the three-piece cemented lens.
前記ズームレンズは、
正の屈折力を有し固定された第１レンズ群と、負の屈折力を有し少なくとも変倍を行うために光軸方向へ移動可能とされた第２レンズ群と、正の屈折力を有し固定された第３レンズ群と、正の屈折力を有し変倍による焦点位置の補正及び合焦を行うために光軸方向へ移動可能とされた第４レンズ群と、正の屈折力を有する第５レンズ群とが物体側より像側へ順に配置されて構成され、
前記第２レンズ群より像側かつ前記第５レンズ群より物体側の位置に開口絞りを配置し、
前記開口絞りより像側に配置されたレンズ群のうち少なくとも一つのレンズ群が３枚のレンズを接合して構成した３枚接合レンズを有し、
以下の条件式（５）及び条件式（６）を満足するように構成された
ことを特徴とする撮像装置。
（５）ｆｍ＜０
（６）νｍ＜３０
但し、
ｆｍ：３枚接合レンズにおける中間レンズの焦点距離
νｍ：３枚接合レンズにおける中間レンズのアッベ数
とする。 An imaging apparatus comprising a zoom lens and an image sensor that converts an optical image formed by the zoom lens into an electrical signal,
The zoom lens is
A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has positive refractive power and is movable in the direction of the optical axis in order to correct and focus the focal position by zooming, and positive refraction A fifth lens group having power is arranged in order from the object side to the image side,
An aperture stop is disposed at a position closer to the image side than the second lens group and closer to the object side than the fifth lens group,
At least one lens group among the lens groups arranged on the image side from the aperture stop has a three-piece cemented lens constituted by cementing three lenses,
An image pickup apparatus configured to satisfy the following conditional expression (5) and conditional expression (6).
(5) fm <0
(6) νm <30
However,
fm: focal length of the intermediate lens in the three-piece cemented lens νm: the Abbe number of the intermediate lens in the three-piece cemented lens.
前記第５レンズ群が負の屈折力を有する３枚接合レンズと正の屈折力を有するレンズ群とを有するように構成し、
以下の条件式（５）及び条件式（６）を満足するように構成された
ことを特徴とするズームレンズ。
（５）ｆｍ＜０
（６）νｍ＜３０
但し、
ｆｍ：３枚接合レンズにおける中間レンズの焦点距離
νｍ：３枚接合レンズにおける中間レンズのアッベ数
とする。 A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has positive refractive power and is movable in the direction of the optical axis in order to correct and focus the focal position by zooming, and positive refraction A zoom lens having a fifth lens group having power arranged in order from the object side to the image side,
The fifth lens group is configured to have a three-piece cemented lens having a negative refractive power and a lens group having a positive refractive power,
A zoom lens configured to satisfy the following conditional expressions (5) and (6):
(5) fm <0
(6) νm <30
However,
fm: focal length of the intermediate lens in the three-piece cemented lens νm: the Abbe number of the intermediate lens in the three-piece cemented lens.
ことを特徴とする請求項１８に記載のズームレンズ。 A first lens having a positive refractive power, a second lens having a negative refractive power, and a third lens having a negative refractive power, in which the three-piece cemented lens is disposed in order from the object side to the image side. The zoom lens according to claim 18, wherein the zoom lens is configured.
前記ズームレンズは、
正の屈折力を有し固定された第１レンズ群と、負の屈折力を有し少なくとも変倍を行うために光軸方向へ移動可能とされた第２レンズ群と、正の屈折力を有し固定された第３レンズ群と、正の屈折力を有し変倍による焦点位置の補正及び合焦を行うために光軸方向へ移動可能とされた第４レンズ群と、正の屈折力を有する第５レンズ群とが物体側より像側へ順に配置されて構成され、
前記第５レンズ群が負の屈折力を有する３枚接合レンズと正の屈折力を有するレンズ群とを有するように構成し、
以下の条件式（５）及び条件式（６）を満足するように構成された
ことを特徴とする撮像装置。
（５）ｆｍ＜０
（６）νｍ＜３０
但し、
ｆｍ：３枚接合レンズにおける中間レンズの焦点距離
νｍ：３枚接合レンズにおける中間レンズのアッベ数
とする。 An imaging apparatus comprising a zoom lens and an image sensor that converts an optical image formed by the zoom lens into an electrical signal,
The zoom lens is
A first lens group having a positive refracting power and a fixed lens; a second lens group having a negative refracting power and movable at least in order to perform zooming; and a positive refracting power. A third lens group that is fixed, a fourth lens group that has positive refractive power and is movable in the direction of the optical axis in order to correct and focus the focal position by zooming, and positive refraction A fifth lens group having power is arranged in order from the object side to the image side,
The fifth lens group is configured to have a three-piece cemented lens having a negative refractive power and a lens group having a positive refractive power,
An image pickup apparatus configured to satisfy the following conditional expression (5) and conditional expression (6).
(5) fm <0
(6) νm <30
However,
fm: focal length of the intermediate lens in the three-piece cemented lens νm: the Abbe number of the intermediate lens in the three-piece cemented lens.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008036038A JP5176581B2 (en) | 2007-12-26 | 2008-02-18 | Zoom lens and imaging device |
| US12/292,911 US7986458B2 (en) | 2007-12-26 | 2008-12-01 | Zoom lens and image pickup apparatus |
| US13/137,137 US8228612B2 (en) | 2007-12-26 | 2011-07-22 | Zoom lens and image pickup apparatus |
| US13/423,837 US8520317B2 (en) | 2007-12-26 | 2012-03-19 | Zoom lens and image pickup apparatus |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007334754 | 2007-12-26 | ||
| JP2007334754 | 2007-12-26 | ||
| JP2008036038A JP5176581B2 (en) | 2007-12-26 | 2008-02-18 | Zoom lens and imaging device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2009175648A JP2009175648A (en) | 2009-08-06 |
| JP2009175648A5 true JP2009175648A5 (en) | 2011-03-31 |
| JP5176581B2 JP5176581B2 (en) | 2013-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008036038A Expired - Fee Related JP5176581B2 (en) | 2007-12-26 | 2008-02-18 | Zoom lens and imaging device |
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| Country | Link |
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| JP (1) | JP5176581B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5387392B2 (en) * | 2009-12-25 | 2014-01-15 | ソニー株式会社 | Zoom lens and imaging device |
| JP5585425B2 (en) | 2010-12-07 | 2014-09-10 | ソニー株式会社 | Zoom lens and imaging device |
| JP2013125075A (en) | 2011-12-13 | 2013-06-24 | Sony Corp | Zoom lens and image pickup apparatus |
| KR101919011B1 (en) * | 2012-05-11 | 2018-11-16 | 삼성전자주식회사 | Telephoto zoom lens system and photographing apparatus having the same |
| JP6692304B2 (en) * | 2017-01-27 | 2020-05-13 | 富士フイルム株式会社 | Zoom lens and imaging device |
| TWI831882B (en) * | 2019-12-02 | 2024-02-11 | 揚明光學股份有限公司 | Zoom projection lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007322804A (en) * | 2006-06-01 | 2007-12-13 | Sony Corp | Zoom lens and imaging apparatus |
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- 2008-02-18 JP JP2008036038A patent/JP5176581B2/en not_active Expired - Fee Related