公开(公告)号：US06560016B2

公开(公告)日：2003-05-06

申请号：US09821357

申请日：2001-03-29

申请人： Fumiaki Usui ,  Ryuji Nurishi ,  Kiyoshi Fukami

发明人： Fumiaki Usui ,  Ryuji Nurishi ,  Kiyoshi Fukami

IPC分类号： G02B2764

CPC分类号： G02B15/17

摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit of positive refractive power, a second lens unit of negative refractive power arranged to move during variation of magnification, a third lens unit of negative refractive power arranged to compensate for shift of an image plane due to the variation of magnification, and a fourth lens unit of positive refractive power. The fourth lens unit has a focal-length changeover subunit arranged to be insertable onto and detachable from an optical axis of the zoom lens and provided for changing the focal length of the zoom lens, and an image-stabilizing lens subunit different from the focal-length changeover subunit. The image-stabilizing lens subunit is movable in such a way as to have a component perpendicular to the optical axis so as to displace an image.

公开(公告)号：US07095563B2

公开(公告)日：2006-08-22

申请号：US11103379

申请日：2005-04-11

申请人： Ryuji Nurishi

发明人： Ryuji Nurishi

IPC分类号： G02B13/08 ,  G02B13/12

CPC分类号： G02B13/08 ,  G02B13/12 ,  G02B15/02

摘要： An anamorphic converter, which is disposed at an image side of an image-forming optical system, includes a first lens unit having one of positive and negative optical power, a second lens unit including an anamorphic lens, and a third lens unit having positive optical power, positioned in order from an object side to the image side. The second lens unit is removable from the position between the first lens unit and the third lens unit.

摘要翻译： 设置在图像形成光学系统的像侧的变形转换器包括具有正光焦度和负光焦度之一的第一透镜单元，包括变形透镜的第二透镜单元和具有正光学的第三透镜单元 功率，从物体侧到图像侧依次定位。 第二透镜单元可从第一透镜单元和第三透镜单元之间的位置移除。

公开(公告)号：US06989942B1

公开(公告)日：2006-01-24

申请号：US09669664

申请日：2000-09-26

申请人： Ryuji Nurishi

发明人： Ryuji Nurishi

IPC分类号： G02B15/163 ,  G02B27/64 ,  G02B15/10

CPC分类号： G02B27/646 ,  G02B15/173

摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit of positive refractive power, a second lens unit of negative refractive power arranged to move during variation of magnification, a third lens unit arranged to compensate for shift of an image plane due to the variation of magnification, and a fourth lens unit of positive refractive power, wherein the fourth lens unit has a first lens subunit of negative refractive power, and an image is displaced by moving the first lens subunit in such a way as to have a component perpendicular to an optical axis of the zoom lens.

摘要翻译： 变焦透镜从物体侧到像侧依次包括具有正屈光力的第一透镜单元，布置成在放大倍数变化期间移动的负折光力的第二透镜单元，布置成补偿偏移的第三透镜单元 的第一透镜单元，其中第四透镜单元具有负折光力的第一透镜单元，并且通过使第一透镜子单元移动到第二透镜单元的位置，使得图像被移位， 具有垂直于变焦透镜的光轴的分量的方式。

公开(公告)号：US06847495B2

公开(公告)日：2005-01-25

申请号：US10651795

申请日：2003-08-29

申请人： Ryuji Nurishi

发明人： Ryuji Nurishi

IPC分类号： G02B7/08 ,  G02B7/09 ,  G02B7/10 ,  G02B15/167 ,  G02B15/17 ,  H04N5/225 ,  H04N5/232 ,  G02B15/14

CPC分类号： G02B15/173 ,  G02B7/102

摘要： A small zoom lens apparatus capable of carrying out focusing through manual operations in an autofocus mode. The zoom lens apparatus includes a variator lens unit, an object-side focus lens unit placed closer to an object than the variator lens unit and an image plane-side focus lens unit placed closer to an image plane than the variator lens unit. Driving of the object-side focus lens unit through manual operations is allowed when the autofocus mode is set.

摘要翻译： 能够通过自动对焦模式中的手动操作进行聚焦的小变焦透镜装置。 变焦透镜装置包括变倍透镜单元，被放置得比放大透镜单元更靠近物体的物体侧聚焦透镜单元和位于比变倍透镜单元更靠近像面的像平面侧聚焦透镜单元。 当设置自动对焦模式时，允许通过手动操作来驱动物体侧聚焦透镜单元。

公开(公告)号：US07903345B2

公开(公告)日：2011-03-08

申请号：US12574360

申请日：2009-10-06

申请人： Ryuji Nurishi

发明人： Ryuji Nurishi

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power and configured to move during zooming, a third lens unit having a positive refractive power and configured to move during zooming, and a fourth lens unit having a positive refractive power and configured not to move for zooming. In the zoom lens, the second lens unit includes at least one positive lens and at least one negative lens. Furthermore, in the zoom lens, average values of Abbe number (ν) and relative partial dispersion (θ) of materials of the at least one negative lens (νna, θna) and average values of Abbe number (ν) and relative partial dispersion (θ) of materials of the at least one positive lens (νpa, θpa) satisfy an appropriate condition.

摘要翻译： 变焦透镜从物体侧到像侧依次包括具有正折光力的第一透镜单元，具有负折光力并被配置为在变焦期间移动的第二透镜单元，具有正折射率的第三透镜单元 功率并且被配置为在变焦期间移动;以及第四透镜单元，其具有正折射能力并且被配置为不移动用于变焦。 在变焦透镜中，第二透镜单元包括至少一个正透镜和至少一个负透镜。 此外，在变焦透镜中，至少一个负透镜的材料的阿贝数（＆ngr;）和相对部分色散（＆amp;重量）的平均值和阿贝数（＆ngr）的平均值 ;和）所述至少一个正透镜（＆ngr; pa，＆amp; tt; pa）的材料的相对部分色散（＆amp; thetas）满足适当的条件。

公开(公告)号：US07769283B2

公开(公告)日：2010-08-03

申请号：US12416517

申请日：2009-04-01

申请人： Ryuji Nurishi

发明人： Ryuji Nurishi

IPC分类号： G03B17/00

CPC分类号： G03B13/36 ,  G02B7/282

摘要： A lens apparatus includes an imaging optical system including a focus lens unit, a branching optical unit disposed at the image side of the focus lens unit, a focus-state detecting unit including a focus detecting element having a focus detection area that receives light beams from the branching optical unit, and detecting a focus state by using the focus detecting element, an actuator that drives the focus lens unit in an optical axis direction thereof, a controller that controls the actuator, in accordance with an output from the focus-state detecting unit, and a movable image-side optical unit disposed at the image side of the branching optical unit. The controller changes the size of the focus detection area of the focus detecting element within a range in accordance with the position of the image-side optical unit.

摘要翻译： 一种透镜装置，包括：成像光学系统，包括聚焦透镜单元，设置在聚焦透镜单元的像侧的分支光学单元;焦点状态检测单元，包括焦点检测元件，该焦点检测元件具有接收来自 分支光学单元，并且通过使用焦点检测元件来检测聚焦状态，驱动聚焦透镜单元的光轴方向的控制器，根据聚焦状态检测的输出来控制致动器的控制器 以及设置在分支光学单元的像侧的可动图像侧光学单元。 控制器根据图像侧光学单元的位置将焦点检测元件的焦点检测区域的大小改变在范围内。

公开(公告)号：US20090290229A1

公开(公告)日：2009-11-26

申请号：US12467950

申请日：2009-05-18

申请人： Masakazu Kodaira ,  Tsuyoshi Wakazono ,  Masaru Sakamoto ,  Ryuji Nurishi

发明人： Masakazu Kodaira ,  Tsuyoshi Wakazono ,  Masaru Sakamoto ,  Ryuji Nurishi

IPC分类号： G02B15/14

CPC分类号： G02B15/173 ,  G02B27/646

摘要： A zoom lens system includes, in order from the object side to the image side, four lens units having positive, negative, negative and positive refractive powers. A first lens unit includes, in order from the object side to the image side: a front subunit having a negative refractive power; a middle subunit that has a positive refractive power and moves during focusing; and a rear subunit having a positive refractive power. The zoom lens system further includes a variable apex angle prism disposed on the image side of the front subunit. An average Abbe number of materials of a negative lens element and a positive lens element included in the front subunit is set appropriately so as to suppress occurrence of decentering aberration accompanying a variation of a prism apex angle.

摘要翻译： 变焦透镜系统从物体侧到像侧依次包括具有正，负，负和正屈光力的四个透镜单元。 第一透镜单元从物体侧到像侧依次包括具有负折光力的前亚像单元; 具有正折射力并在聚焦期间移动的中间子单元; 以及具有正折光力的后部子单元。 变焦透镜系统还包括设置在前子单元的像侧的可变顶角棱镜。 适当地设置包括在前子单元中的负透镜元件和正透镜元件的材料的平均阿贝数，以便抑制伴随棱镜顶角的变化的偏心像差的发生。

公开(公告)号：US07532812B2

公开(公告)日：2009-05-12

申请号：US11531021

申请日：2006-09-12

申请人： Ryuji Nurishi

发明人： Ryuji Nurishi

IPC分类号： G03B17/00 ,  G03B3/00

CPC分类号： G03B13/36 ,  G02B7/282

摘要： A lens apparatus includes an imaging optical system including a focus lens unit, a branching optical unit disposed at the image side of the focus lens unit, a focus-state detecting unit including a focus detecting element having a focus detection area that receives light beams from the branching optical unit, and detecting a focus state by using the focus detecting element, an actuator that drives the focus lens unit in an optical axis direction thereof, a controller that controls the actuator, in accordance with an output from the focus-state detecting unit, and a movable image-side optical unit disposed at the image side of the branching optical unit. The controller changes the size of the focus detection area of the focus detecting element within a range in accordance with the position of the image-side optical unit.

摘要翻译： 一种透镜装置，包括：成像光学系统，包括聚焦透镜单元，设置在聚焦透镜单元的像侧的分支光学单元;焦点状态检测单元，包括焦点检测元件，该焦点检测元件具有接收来自 分支光学单元，并且通过使用焦点检测元件来检测聚焦状态，驱动聚焦透镜单元的光轴方向的控制器，根据聚焦状态检测的输出来控制致动器的控制器 以及设置在分支光学单元的像侧的可动图像侧光学单元。 控制器根据图像侧光学单元的位置将焦点检测元件的焦点检测区域的大小改变在范围内。

公开(公告)号：US06987622B2

公开(公告)日：2006-01-17

申请号：US10980342

申请日：2004-11-04

申请人： Ryuji Nurishi

发明人： Ryuji Nurishi

IPC分类号： G02B15/14

CPC分类号： G02B15/17 ,  G02B15/173

摘要： There is disclosed a zoom lens having small variations of aberration and field angle during focusing and having a small system as a whole. The zoom lens includes a first lens unit having a positive optical power, a second lens unit having a negative optical power, a third lens unit having a negative optical power, a fourth lens unit having a positive optical power, and a fifth lens unit having a positive optical power, in order from an object side to an image side. During zooming, the second lens unit and third lens unit are moved, and during focusing, the fifth lens unit is moved. The fifth lens unit consists of one negative lens element and two positive lens elements in order from the object side to the image side, and the following conditions are satisfied: 0

摘要翻译： 公开了一种在聚焦期间具有小的像差和场角变化的变焦透镜，并且整体上具有小的系统。 变焦透镜包括具有正光焦度的第一透镜单元，具有负光焦度的第二透镜单元，具有负光焦度的第三透镜单元，具有正光焦度的第四透镜单元和具有正光焦度的第五透镜单元， 正的光学功率，从物体侧到像侧。 在变焦期间，第二透镜单元和第三透镜单元被移动，并且在聚焦期间，第五透镜单元被移动。 第五透镜单元包括从物体侧到像侧的一个负透镜元件和两个正透镜元件，并且满足以下条件：<？in-line-formula description =“In-line formula”end = “lead”？> 0 <α5<0.35 <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end = lead“？> 1.85

公开(公告)号：US20050168829A1

公开(公告)日：2005-08-04

申请号：US11050391

申请日：2005-02-03

申请人： Ryuji Nurishi ,  Takahiro Yoshimi

发明人： Ryuji Nurishi ,  Takahiro Yoshimi

IPC分类号： G02B7/10 ,  G02B9/10 ,  G02B13/08 ,  G02B13/18 ,  G02B27/09 ,  G02B26/08

CPC分类号： G02B13/08

摘要： An anamorphic converter, which can be inserted into and removed from a lens group of an image-formation optical system, includes an anamorphic lens that satisfies the following conditions 0.9 1 wherein βx represents a first focal distance magnification scale at a first cross-section containing an optical axis of the anamorphic lens, βy represents a second focal distance magnification scale at a second cross-section which is perpendicular to the first cross-section and contains the optical axis, AR1 represents an aspect ratio of an image-taking range in a field of the image-formation optical system, and AR2 represents an aspect ratio at an effective range of an image-taking unit disposed at an object image side of the lens group. As such, there is provided an anamorphic converter which is small and has high optical performance, suitable for digital cinematography.

摘要翻译： 可以插入到图像形成光学系统的透镜组中并从图像形成光学系统的透镜组移除的变形转换器包括满足以下条件的变形透镜：<？in-line-formula description =“In-line Formulas”end =“ 引线“>> 0.9 <（AR 1 .betax）/（AR 2 .betay）<1.1 <？in-line-formula description =”In-line Formulas“end =”tail“？> <？in-line-formula 描述=“在线公式”end =“lead”？>（AR 2 ^{2 +1）.betay /（AR 1 SUP > +1）> 1 <？in-line-formula description =“在线公式”end =“tail”？>其中，betax表示第一横截面处的第一焦距放大标度，该第一横截面包含变形的光轴 透镜，betay表示在垂直于第一横截面并包含光轴的第二横截面处的第二焦距放大倍率，AR1表示图像形成场中的摄像范围的纵横比 光学系统，AR2表示eff的长宽比 设置在透镜组的物体像侧的摄像单元的摄像范围。 因此，提供了一种小型且具有高光学性能的变形转换器，适用于数字摄影。}