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1. 发明授权

US4508433A Telephoto objective 失效
标题翻译：远摄目标
公开(公告)号：US4508433A
公开(公告)日：1985-04-02
申请号：US489393
申请日：1983-05-02
申请人： Nozomu Kitagishi , Sadahiko Tsuji
发明人： Nozomu Kitagishi , Sadahiko Tsuji
IPC分类号： G02B13/02 , G02B9/62 , G02B9/64
CPC分类号： G02B13/02
摘要： In a telephoto objective, a positive lens group and a negative lens group closer to the image than the positive lens group move simultaneously in axially opposite directions and relative to a stationary positive lens group which is closer to the image than both movable lens groups while the telephoto objective is being focused on an object. According to one embodiment of the invention, the diaphragm between the movable lens groups is varied in response to focusing so as to control the variation of the diameter of an on-axial light ray bundle.
摘要翻译：在远摄目的中，与正透镜组相比更靠近图像的正透镜组和负透镜组在轴向相反方向上并且相对于比两个可移动透镜组更接近图像的静止正透镜组同时移动，而长焦目标正在集中在一个对象上。根据本发明的一个实施例，可移动透镜组之间的光阑响应于聚焦而变化，以便控制轴向光线束的直径的变化。

2. 发明授权

US07038722B2 Optical imaging system for suppressing the generation of red-toned ghosting particularly when there is background light 失效
标题翻译：用于抑制红色重影的产生的光学成像系统，特别是当有背景光时
公开(公告)号：US07038722B2
公开(公告)日：2006-05-02
申请号：US10096750
申请日：2002-03-14
申请人： Nozomu Kitagishi
发明人： Nozomu Kitagishi
IPC分类号： H04N3/14 , H04N5/225 , H04N1/46
CPC分类号： G02B27/0018 , G02B5/208 , H04N5/2254
摘要： An optical imaging system suppresses the generation of red-toned ghosting in an image particularly when there is a background light or when a strong light source shines on the screen. The optical imaging system has a reflection-type infrared cut filter comprising a multi-layer film, color filters that selectively transmit light according to the wavelength, and an imaging element. Ghosting is suppressed to inconspicuous levels by adjusting the transmittance of the color filters and the infrared cut filter, and by setting the spectral characteristics of the color filters.
摘要翻译：光学成像系统抑制在图像中产生红色重影，特别是当存在背景光时或当强光源照射在屏幕上时。光学成像系统具有反射型红外线截止滤光片，其包括多层膜，根据波长有选择地透过光的滤色器和成像元件。通过调整滤色器和红外线截止滤光片的透射率，并通过设置滤色器的光谱特性，将重影抑制到不显眼的水平。

3. 发明授权

US5270857A Optical system for stabilizing an image 失效
标题翻译：用于稳定图像的光学系统
公开(公告)号：US5270857A
公开(公告)日：1993-12-14
申请号：US261231
申请日：1988-10-24
申请人： Kouji Oizumi , Nozomu Kitagishi , Shoichi Yamzaki
发明人： Kouji Oizumi , Nozomu Kitagishi , Shoichi Yamzaki
IPC分类号： G02B27/64
CPC分类号： G02B27/646
摘要： An image stabilizing system includes a photographic lens device having a plurality of lens units, wherein for zooming at least one lens unit separation varies, a detecting circuit for detecting the jiggle of the system, and a drive device for driving at least one lens unit in a direction perpendicular to a photographic optical axis of the photographic lens device on the basis of an output of the detecting circuit to stabilize an image.
摘要翻译：一种图像稳定系统包括具有多个透镜单元的摄影透镜装置，其中，用于变焦的至少一个透镜单元分离变化，用于检测系统的抖动的检测电路，以及用于驱动至少一个透镜单元的驱动装置根据检测电路的输出，垂直于摄影透镜装置的摄影光轴的方向，以稳定图像。

4. 发明授权

US4949107A Camera having telescopic capability 失效
标题翻译：相机具有伸缩能力
公开(公告)号：US4949107A
公开(公告)日：1990-08-14
申请号：US393774
申请日：1989-08-15
申请人： Nozomu Kitagishi , Takeshi Koyama , Sadatoshi Takahashi , Kouji Oizumi
发明人： Nozomu Kitagishi , Takeshi Koyama , Sadatoshi Takahashi , Kouji Oizumi
IPC分类号： G02B23/14 , G03B13/12
CPC分类号： G03B13/12 , G02B23/145
摘要： A camera having a photographic lens and an eyepiece lens for observing an image formed by the photographic lens, wherein when this camera is used as a telescope, the interval between the image and the eyepiece lens is shortened, while simultaneously changing the focal length of the eyepiece lens, so that the magnification of the finder is increased.
摘要翻译：具有摄影镜头和用于观察由摄影镜头形成的图像的目镜的相机，其中当将该照相机用作望远镜时，图像与目镜之间的间隔缩短，同时改变摄像镜头的焦距目镜，使得取景器的放大倍数增加。

5. 发明授权

US4639096A High range zoom lens 失效
标题翻译：高范围变焦镜头
公开(公告)号：US4639096A
公开(公告)日：1987-01-27
申请号：US657762
申请日：1984-10-04
申请人： Nozomu Kitagishi , Kikuo Momiyama , Keiji Ikemori , Sadatoshi Takahashi , Tsunefumi Tanaka
发明人： Nozomu Kitagishi , Kikuo Momiyama , Keiji Ikemori , Sadatoshi Takahashi , Tsunefumi Tanaka
IPC分类号： G02B15/20 , G02B15/173 , G02B15/14
CPC分类号： G02B15/173
摘要： The disclosed zoom lens is composed of four lens groups. Counting from the front, the first lens group has a positive power, the second a negative power, the third a positive power and the fourth a positive or a negative power. At least the first, third and fourth lens groups are movable for zooming. The zoom lens satisfies the following conditions:-3
摘要翻译：所公开的变焦镜头由四个透镜组组成。从前面算起，第一透镜组具有正功率，第二透镜组为负功率，第三为正功率，第四为正功率或负功率。至少第一，第三和第四透镜组可移动以进行变焦。变焦透镜满足以下条件：-3 <β3w <-0.8 -0.35

6. 发明授权

US4629294A Zoom lens 失效
标题翻译：变焦镜头
公开(公告)号：US4629294A
公开(公告)日：1986-12-16
申请号：US622713
申请日：1984-06-20
申请人： Tsunefumi Tanaka , Sadatoshi Takahashi , Nozomu Kitagishi , Keiji Ikemori , Kikuo Momiyama
发明人： Tsunefumi Tanaka , Sadatoshi Takahashi , Nozomu Kitagishi , Keiji Ikemori , Kikuo Momiyama
IPC分类号： G02B15/20 , G02B15/173 , G02B15/14
CPC分类号： G02B15/173
摘要： A zoom lens includes, from front to rear, a positive first component, a negative second component, a positive third component and a positive or negative fourth component. The first, third and fourth components are movable to vary the focal length of the entire system. In the wide angle position, the image modification of the third component contributes to the ratio of the focal length of the third component to the focal length of the fourth component, and the ratio of that fraction of the zoom ration of the entire system which the second component assumes to the zoom ratio of the entire system, satisfies specific conditions such that minimization of the bulk and size of the zoom lens and a stabilized correction of aberrations are achieved.
摘要翻译：变焦透镜从前到后包括正的第一分量，负的第二分量，正的第三分量和正或负的第四分量。第一，第三和第四组件可移动以改变整个系统的焦距。在广角位置，第三分量的图像修正有助于第三分量的焦距与第四分量的焦距的比率，以及整个系统的变焦比率的比率第二分量假定为整个系统的变焦比，满足特定条件，使得实现变焦透镜的体积和尺寸的最小化以及稳定的像差校正。

7. 发明授权

US4547663A Focus detecting apparatus with a compensation mask 失效
标题翻译：带补偿面罩的对焦检测装置
公开(公告)号：US4547663A
公开(公告)日：1985-10-15
申请号：US596575
申请日：1984-04-05
申请人： Nozomu Kitagishi , Shin Yamaguchi , Shinji Sakai , Takao Kinoshita , Takashi Kawabata , Nobuhiko Shinoda , Kazuya Hosoe
发明人： Nozomu Kitagishi , Shin Yamaguchi , Shinji Sakai , Takao Kinoshita , Takashi Kawabata , Nobuhiko Shinoda , Kazuya Hosoe
IPC分类号： G02B7/36 , G02B7/38 , G03B3/10 , G03B13/36 , G01J1/20
CPC分类号： G03B3/10
摘要： A focus detecting apparatus is disclosed which includes a focusing optical system for forming an object image on a predetermined focal plane and photoelectric devices disposed before and behind the focal plane at substantially equal distances from the plane. The photoelectric devices detect the focus states of the object images formed thereon respectively. The focus state of the object image on the focal plane is detected depending on whether or not the focus states on the photoelectric devices are equal to each other. According to the invention such a focus detecting apparatus further includes a mask for gradually decreasing the quantity of light incident upon the photoelectric devices in the direction away from the center of the incident beam. Under the action of such a mask, the focus states of object images before and behind the predetermined focal plane at substantially equal distances from the focal plane are made approximately equal to each other.
摘要翻译：公开了一种聚焦检测装置，其包括用于在预定焦平面上形成物体图像的聚焦光学系统和设置在距离平面基本相等的距离处的焦平面之前和之后的光电装置。光电装置分别检测形成在其上的物体图像的聚焦状态。根据光电装置上的聚焦状态是否相等来检测焦平面上的对象图像的聚焦状态。根据本发明，这种焦点检测装置还包括用于逐渐减小入射在光电装置上的光在远离入射光束中心的方向上的掩模。在这种掩模的作用下，预定焦平面之前和之后距离焦平面基本相等的物体图像的聚焦状态大致相等。

8. 发明授权

US4241983A Telephoto lens 失效
标题翻译：长焦镜头
公开(公告)号：US4241983A
公开(公告)日：1980-12-30
申请号：US70488
申请日：1979-08-28
申请人： Nozomu Kitagishi
发明人： Nozomu Kitagishi
IPC分类号： G02B13/02 , G02B9/60
CPC分类号： G02B13/02
摘要： A telephoto lens comprising; a front lens group comprising a positive lens, a negative lens and positive lens arranged in the written order from the object side, and having a positive refracting power, and a rear lens group arranged with a large space from the front group, in which the positive lens is made of an anomalous dispersion optical material, and the negative lens is made of lanthanum glass, and the telephoto lens satisfies the following conditions: ##EQU1## wherein F is the focal length of the whole system, .phi.i is the refracting power of the i-th lens from the object side, and ri is the curvature radius of the i-th lens surface of the lens from the object side.
摘要翻译：一种长焦镜头，包括：前透镜组，其包括从物体侧以书面顺序布置的正透镜，负透镜和正透镜，并且具有正折射率，以及从前组排列有大空间的后透镜组，其中正透镜由异常色散光学材料制成，负透镜由镧玻璃制成，长焦透镜满足以下条件：（1）（2）（3）（5）其中F是整个系统的焦距，phi i是第i个透镜从物体侧的折射力，ri是第i个透镜的曲率半径透镜的物体表面。

9. 发明授权

US07190519B1 Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit 失效
标题翻译：板状偏振元件，设置有该元件的偏振转换单元和设置有该单元的投影仪
公开(公告)号：US07190519B1
公开(公告)日：2007-03-13
申请号：US08936182
申请日：1997-09-24
申请人： Nozomu Kitagishi
发明人： Nozomu Kitagishi
IPC分类号： G02B5/30 , G02B27/28 , G02F1/1335 , H04N5/74
CPC分类号： G02B27/283 , G02B5/3033 , G02B27/285
摘要： This specification discloses a polarizing. element for dividing light into first and second polarized lights differing in polarized state from each other by a polarizing dividing surface, directing the first polarized light in a first direction, reflecting the second polarized light by a reflecting surface and directing it in the first direction, and varying the polarized state of at least one of the first and second polarized lights to thereby make the polarized states of the first and second polarized lights coincident with each other, characterized in that the polarizing dividing surface is disposed on one surface of a plane parallel plate and the reflecting surface is disposed on the other surface of the plane parallel plate, and the light enters obliquely from the one surface or the other surface. The specification also discloses a polarizing conversion unit provided with such polarizing element, and a projector provided with such polarizing conversion unit.
摘要翻译：该说明书公开了一种极化。用于将光分离成通过偏振分割表面彼此不同的第一和第二偏振光的第一和第二偏振光，将第一偏振光沿第一方向引导，通过反射表面反射第二偏振光并将其指向第一方向，并且改变第一和第二偏振光中的至少一个的偏振状态，从而使得第一和第二偏振光的偏振状态彼此一致，其特征在于，偏振分割表面设置在平行的平面的一个表面上板和反射面设置在平面平行板的另一个表面上，并且光从一个表面或另一个表面倾斜地进入。本说明书还公开了一种具有这种偏振元件的偏振转换单元，以及设置有偏振转换单元的投影仪。

10. 发明申请

US20060262208A1 Optical low pass filter and image pickup apparatus having the same 审中-公开
标题翻译：光学低通滤波器和具有该低通滤波器的图像拾取装置
公开(公告)号：US20060262208A1
公开(公告)日：2006-11-23
申请号：US11432040
申请日：2006-05-10
申请人： Nozomu Kitagishi , Hiroyuki Ohba
发明人： Nozomu Kitagishi , Hiroyuki Ohba
IPC分类号： H04N9/083
CPC分类号： H04N5/232 , H04N9/045
摘要： An object is to provide an optical low pass filter that can achieve advantageous effects in spite of its simple structure, in reducing moire fringes and false color noise for a common subject that includes a two-dimensional pattern. An optical low pass filter according to the present invention includes a plane parallel plate composed of a biaxial crystal, wherein the plane parallel plate satisfies the condition 0°≦|θ|
摘要翻译：目的是提供一种光学低通滤波器，尽管其简单的结构，在包括二维图案的普通对象中减少莫尔条纹和假色噪声也能实现有利的效果。根据本发明的光学低通滤波器包括由双轴晶体组成的平面平行板，其中平面平行板满足条件0°<= |θ| <20°，其中θ是由双轴晶体的光轴和光入射表面的法线。

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