公开(公告)号：US4838669A

公开(公告)日：1989-06-13

申请号：US169475

申请日：1988-03-17

申请人： Yasuzi Ogata ,  Takao Ohi

发明人： Yasuzi Ogata ,  Takao Ohi

IPC分类号： G02B15/16

CPC分类号： G02B15/161

摘要： A zoom lens system having a short total length and a small outside diameter, comprising a front lens group having positive refractive power and a rear lens group having negative refractive power, and so designed as to change focal length by varying an airspace reserved between said lens groups; said front lens group consisting, in the order from the object side, of a positive meniscus lens, a negative lens and at least one positive lens, and said rear lens group consisting of a positive lens, a biconcave lens and a negative meniscus lens.

摘要翻译： 具有短总长度和小外径的变焦透镜系统，包括具有正屈光力的前透镜组和具有负屈光力的后透镜组，并且被设计成通过改变保留在所述透镜之间的空间来改变焦距 团体 所述前透镜组按照物体侧的顺序由正弯月透镜，负透镜和至少一个正透镜组成，所述后透镜组由正透镜，双凹透镜和负弯月形透镜组成。

公开(公告)号：US07268955B2

公开(公告)日：2007-09-11

申请号：US11407997

申请日：2006-04-21

申请人： Yasuzi Ogata

发明人： Yasuzi Ogata

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： The invention is concerned with a zoom lens that is well fit for a digital type single-lens reflex camera, has improved optical performance, and is bright all over the zooming zone. The zoom lens comprises a first group G1 of positive power, a second group G2 of negative power and a third group G3 of positive power. Upon zooming, the first group G1 remains fixed, and the second G2 and the third group G3 are movable. The first group G1 comprises a subgroup 1A of negative power and a subgroup 1B of positive power, and the second group G2 comprises a first negative lens, a cemented positive lens, a second negative lens and a third negative lens. The zoom lens satisfies conditions (1) and (2) with respect to the focal length of the subgroup 1A and the focal length of the second group G2.

摘要翻译： 本发明涉及一种适合于数字式单镜头反光相机的变焦镜头，具有改善的光学性能，并且在整个变焦区域都是明亮的。 变焦透镜包括正功率的第一组G 1，负功率的第二组G 2和正功率的第三组G 3。 在变焦时，第一组G 1保持固定，并且第二组G 2和第三组G 3是可移动的。 第一组G 1包括负功率的子组1A和正功率的子组1B，第二组G 2包括第一负透镜，胶合正透镜，第二负透镜和第三负透镜。 变焦透镜相对于亚组1A的焦距和第二组G 2的焦距满足条件（1）和（2）。

公开(公告)号：US07435020B2

公开(公告)日：2008-10-14

申请号：US11125428

申请日：2005-05-10

申请人： Sumio Kawai ,  Yasuzi Ogata

发明人： Sumio Kawai ,  Yasuzi Ogata

IPC分类号： G03B17/02

CPC分类号： H04N5/2254 ,  G02B7/14 ,  G03B17/14 ,  G03B19/12

摘要： A camera system according to the present invention includes an image pickup device having an imaging surface of an imaging range with a predetermined aspect ratio, the image circle being set larger than the imaging range to include the imaging range therein, a mount portion to which the interchangeable lens is mounted, and an opening portion having an opening for allowing luminous flux from the interchangeable lens to pass through, being located at a position spaced from the imaging surface by a predetermined distance, wherein the size of the opening of the opening portion is equal to or larger than a square formed by connecting ends of segments tilted by an angle θ with respect to an optical axis diagonally from four corners of the imaging range and extended to the opening of the opening portion, and the angle θ satisfies: 12 degrees≦θ, wherein a distance between the opening of the opening portion and the imaging surface, herein referred to as flange back (FB), is: 35 mm≦FB≦50 mm.

摘要翻译： 根据本发明的照相机系统包括：图像拾取装置，具有具有预定长宽比的成像范围的成像表面，将图像圆设置为大于成像范围，以包括其中的成像范围;安装部， 并且具有用于允许来自可互换镜头的光通量的开口的开口部分位于与成像表面隔开预定距离的位置，其中开口部分的开口尺寸为 等于或大于由成像范围的四个角的斜角相对于光轴倾斜角度θ的部分的端部延伸到开口部分的开口形成的方形，并且角度θ满足： in-line-formula description =“In-line Formulas”end =“lead”？> 12 degrees <= theta，<？in-line-formula description =“In-line Formulas”end =“tail”？>其中a dis 开口部分的开口与成像表面（这里称为凸缘背面（FB））之间的距离是：<？in-line-formula description =“In-line formula”end =“lead”？> 35 mm < = FB <= 50mm。<？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US06910814B2

公开(公告)日：2005-06-28

申请号：US10465410

申请日：2003-06-19

申请人： Sumio Kawai ,  Yasuzi Ogata

发明人： Sumio Kawai ,  Yasuzi Ogata

IPC分类号： G02B7/02 ,  G02B7/04 ,  G03B17/14 ,  H04N5/225 ,  H04N101/00 ,  G03B17/02

CPC分类号： G02B7/14 ,  G03B17/14 ,  G03B19/12 ,  H04N5/2254

摘要： The present digital camera system includes a camera body and an interchangeable lens barrel. The camera body contains an image pickup device with an imaging range Ri, and the interchangeable lens barrel is removably attached to the camera body. The mount opening portions of the interchangeable lens barrel and camera body includes openings equal to or larger than a square opening range Rm formed by connecting ends of segments Sd tilted outwardly from the four corners of an imaging range Ri diagonally to the outside by 12 degrees to 14 degrees and extended to a flange back FB position. The circumscribed circle diameter Dm of the mount opening portion is 1.8 times or larger of the circumscribed circle diameter Di of the imaging range Ri. The digital camera system can provide an interchangeable lens and digital camera body reducible in size without deterioration in amount of peripheral light.

摘要翻译： 本数字照相机系统包括相机主体和可互换的镜筒。 相机主体包括具有成像范围Ri的图像拾取装置，并且可互换镜筒可移除地附接到照相机主体。 可互换镜筒和照相机主体的安装开口部分包括开口范围Rm等于或大于开口范围Rm的开口，该开口范围Rm通过将成像范围Ri的四个角向外对角地向外倾斜12度的段Sd的端部连接12度而形成 14度并延伸到法兰回FB位置。 安装开口部的外接圆直径Dm为摄像范围Ri的外接圆直径Di的1.8倍以上。 数码相机系统可以提供可互换的镜头和数码相机体，可以减小尺寸而不会使外围光量变差。

公开(公告)号：US20050200743A1

公开(公告)日：2005-09-15

申请号：US11125428

申请日：2005-05-10

申请人： Sumio Kawai ,  Yasuzi Ogata

发明人： Sumio Kawai ,  Yasuzi Ogata

IPC分类号： G02B7/04 ,  G02B7/14 ,  G03B17/14 ,  G03B19/12 ,  H04N5/225

CPC分类号： H04N5/2254 ,  G02B7/14 ,  G03B17/14 ,  G03B19/12

摘要： A camera system according to the present invention includes an image pickup device having an imaging surface of an imaging range with a predetermined aspect ratio, the image circle being set larger than the imaging range to include the imaging range therein, a mount portion to which the interchangeable lens is mounted, and an opening portion having an opening for allowing luminous flux from the interchangble lens to pass through, being located at a position spaced from the imaging surface by a predetermined distance, wherein the size of the opening of the opening portion is equal to or larger than a square formed by connecting ends of segments tilted by an angle θ with respect to an optical axis diagonally from four corners of the imaging range and extended to the opening of the opening portion, and the angle θ satisfies: 12 degrees≦θ, wherein a distance between the opening of the opening portion and the imaging surface, herein referred to as flash back (FB), is: 35 mm≦FB≦50 mm

摘要翻译： 根据本发明的照相机系统包括：图像拾取装置，具有具有预定长宽比的成像范围的成像表面，将图像圆设置为大于成像范围，以包括其中的成像范围;安装部， 并且具有用于允许来自交换透镜的光通量的开口的开口部分位于与成像表面间隔预定距离的位置处，其中开口部分的开口尺寸为 等于或大于通过将相对于光轴相对于光轴相对于成像范围的四个角的角度倾斜角度θ的部分的端部并且延伸到开口部分的开口而形成的角度，并且角度θ满足：12度 其中开口部分的开口与成像表面之间的距离（这里称为闪回（FB））为：35mm <= FB <= 50mm

公开(公告)号：US06804462B2

公开(公告)日：2004-10-12

申请号：US10412678

申请日：2003-04-14

申请人： Yasuzi Ogata ,  Tomoyuki Satori

发明人： Yasuzi Ogata ,  Tomoyuki Satori

IPC分类号： G03B1306

CPC分类号： G03B19/12 ,  G02B23/14

摘要： A camera includes a screen on which an image of an object is projected, a plurality of reflection surfaces for erecting the image on the screen, and an eyepiece system with positive refracting power for observing the image. In this case, the eyepiece system includes, in order from the object side, a first lens component with positive refracting power, a second lens component with positive refracting power, and a third lens component with negative refracting power. Spacings between the first lens component and the second lens component and between the second lens component and the third lens component are changed to thereby make a diopter adjustment, and the camera satisfies the following conditions: 0.15

摘要翻译： 相机包括投影物体的图像的屏幕，用于在屏幕上竖起图像的多个反射面，以及具有用于观察图像的正折射力的目镜系统。 在这种情况下，目镜系统从物体侧依次包括具有正折射力的第一透镜部件，具有正折射力的第二透镜部件和具有负折射力的第三透镜部件。 改变第一透镜部件和第二透镜部件之间以及第二透镜部件和第三透镜部件之间的间隔，从而进行屈光度调节，并且相机满足以下条件：其中S是屈光度为0的角度 由最离轴的主光线沿着光轴从第三透镜部件的光轴的出射面沿着光轴以23mm的距离穿过光轴; fb是从屏幕到第一透镜部件的入射面的0m -1的屈光度的空气当量长度; Y是屏幕上画面的对角线长度; f3是第三透镜部件的焦距; f是整个系统从目镜系统的屏幕到出射表面的屈光度为0 m -1的焦距。

公开(公告)号：US5920427A

公开(公告)日：1999-07-06

申请号：US609472

申请日：1996-03-01

申请人： Yasuzi Ogata

发明人： Yasuzi Ogata

IPC分类号： G02B13/12 ,  G02B15/16 ,  G02B15/167 ,  G02B15/20 ,  G02B23/14 ,  G02B25/00 ,  G02B23/00 ,  G02B15/14

CPC分类号： G02B15/177 ,  G02B23/145

摘要： A Keplerian variable magnification finder includes an objective system having a positive refracting power, an image erecting system for erecting an intermediate image formed by the objective system, and an eyepiece system having a positive refracting power. The objective system is composed of a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, a third lens unit having a positive refracting power, and a fourth lens unit having a negative refracting power. At least two of these four lens units are moved along the optical axis so that the magnification of the finder is changed.

摘要翻译： 开普勒式可变倍率取景器包括具有正折射能力的物镜系统，用于搭建由物镜系统形成的中间图像的图像竖立系统和具有正折射力的目镜系统。 物镜系统由具有负折射力的第一透镜单元，具有正折射力的第二透镜单元，具有正折射率的第三透镜单元和具有负折射力的第四透镜单元组成。 这四个透镜单元中的至少两个沿着光轴移动，使得取景器的放大率改变。

公开(公告)号：US4523813A

公开(公告)日：1985-06-18

申请号：US568144

申请日：1984-01-04

申请人： Yasuzi Ogata

发明人： Yasuzi Ogata

IPC分类号： G02B15/167 ,  G02B13/04 ,  G02B15/14 ,  G02B15/16 ,  G02B9/64

CPC分类号： G02B13/04 ,  G02B15/14 ,  G02B15/16

摘要： In a zoom lens system comprising a front lens group having negative refractive power and a rear lens group having positive refractive power and designed in such a manner that the airspace between said front lens group and rear lens group is varied for zooming, a zoom lens system comprising a rear lens group consisting of a positive lens component, a positive meniscus lens component, a positive meniscus cemented doublet, a negative lens component and a positive lens component, and having a large relative aperture and favorably corrected aberrations.

摘要翻译： 在包括具有负折光力的前透镜组和具有正折光力的后透镜组的变焦透镜系统中，以使得前透镜组和后透镜组之间的空间变化以便变焦的方式设计，变焦透镜系统 包括由正透镜部件，正弯月透镜部件，正弯月面胶合双面镜，负透镜部件和正透镜部件组成的后透镜组，并且具有大的相对孔径和有利的校正像差。

公开(公告)号：US20060238891A1

公开(公告)日：2006-10-26

申请号：US11407997

申请日：2006-04-21

申请人： Yasuzi Ogata

发明人： Yasuzi Ogata

IPC分类号： G02B15/14

CPC分类号： G02B15/173

摘要： The invention is concerned with a zoom lens that is well fit for a digital type single-lens reflex camera, has improved optical performance, and is bright all over the zooming zone. The zoom lens comprises a first group G1 of positive power, a second group G2 of negative power and a third group G3 of positive power. Upon zooming, the first group G1 remains fixed, and the second G2 and the third group G3 are movable. The first group G1 comprises a subgroup 1A of negative power and a subgroup 1B of positive power, and the second group G2 comprises a first negative lens, a cemented positive lens, a second negative lens and a third negative lens. The zoom lens satisfies conditions (1) and (2) with respect to the focal length of the subgroup 1A and the focal length of the second group G2.

摘要翻译： 本发明涉及一种适合于数字式单镜头反光相机的变焦镜头，具有改善的光学性能，并且在整个变焦区域都是明亮的。 变焦透镜包括正功率的第一组G 1，负功率的第二组G 2和正功率的第三组G 3。 在变焦时，第一组G 1保持固定，并且第二组G 2和第三组G 3是可移动的。 第一组G 1包括负功率的子组1A和正功率的子组1B，第二组G 2包括第一负透镜，胶合正透镜，第二负透镜和第三负透镜。 变焦透镜相对于亚组1A的焦距和第二组G 2的焦距满足条件（1）和（2）。

公开(公告)号：US06962447B2

公开(公告)日：2005-11-08

申请号：US10932141

申请日：2004-09-02

申请人： Yasuzi Ogata

发明人： Yasuzi Ogata

IPC分类号： G02B23/14 ,  G03B19/12

CPC分类号： G03B19/12 ,  G02B23/14

摘要： A camera includes a screen on which an image of an object is projected, a plurality of reflection surfaces for erecting the image on the screen, and an eyepiece system with positive refracting power for observing the image. In this case, the eyepiece system includes, in order from the object side, a first lens component with positive refracting power, a second lens component with positive refracting power, and a third lens component with negative refracting power. Spacings between the first lens component and the second lens component and between the second lens component and the third lens component are changed to thereby make a diopter adjustment, and the camera satisfies the following conditions: 0.15

摘要翻译： 相机包括投影物体的图像的屏幕，用于在屏幕上竖起图像的多个反射面，以及具有用于观察图像的正折射力的目镜系统。 在这种情况下，目镜系统从物体侧依次包括具有正折射力的第一透镜部件，具有正折射力的第二透镜部件和具有负折射力的第三透镜部件。 改变第一透镜部件和第二透镜部件之间以及第二透镜部件和第三透镜部件之间的间隔，从而进行屈光度调节，并且相机满足以下条件：<？in-line-formula description =“In “公式”end =“lead”？> 0.15 <？in-line-formula description = “in-line formula”end =“lead”？> 2.00 <？in-line-formula description =“在线公式”end =“lead”？> - 0.80 其中S是 角度，以0m -1 -1的屈光度角度，由最离轴的主光线通过光轴沿着光轴以23mm的距离离开出射表面的出射表面 具有光轴的第三透镜部件; fb是从屏幕到第一透镜部件的入射面的0m -1 -1的屈光度的空气当量长度; Y是屏幕上画面的对角线长度; f 3是第三透镜部件的焦距; f是从屏幕到目镜系统的出射表面的整个系统的屈光度为0m -1 -1的焦距。