公开(公告)号：US11287618B2

公开(公告)日：2022-03-29

申请号：US16789074

申请日：2020-02-12

申请人： Iain A. Neil

发明人： Iain A. Neil

IPC分类号： G02B13/12 ,  G03B17/14 ,  H04N5/225 ,  G02B15/14

摘要： The anamorphic objective lens systems (100LS) and methods for forming a set of anamorphic objective lens assemblies (100(i)) having different focal lengths (FLY) and that utilize a front anamorphic section (20) and a set of two or more non-anamorphic sections (50(i)). The non-anamorphic sections are optically matched to the front anamorphic section and their front ends (52) are configured to be easily attached to and detached from the back end (24) of the front anamorphic section to create the anamorphic objective lens assemblies having the different focal lengths. Because the anamorphic objective lens system uses only a single front anamorphic section and multiple non-anamorphic attachments, the cost of having multiple anamorphic objective lens assemblies is substantially reduced as compared to using individual anamorphic objective lenses for each of the desired focal lengths.

公开(公告)号：US20170343827A1

公开(公告)日：2017-11-30

申请号：US15601192

申请日：2017-05-22

申请人： Mitsubishi Electric Corporation

发明人： Takafumi KOKUSHO ,  Kenji ARITA

IPC分类号： G02B27/22 ,  G02B13/12 ,  G02B13/00 ,  F21V8/00 ,  G01C1/02 ,  H04N9/77 ,  F21V33/00

CPC分类号： G02B27/2228 ,  F21V33/0052 ,  G01C1/02 ,  G02B6/0018 ,  G02B6/0023 ,  G02B6/0068 ,  G02B13/007 ,  G02B13/12 ,  G09G3/3406 ,  G09G2300/026 ,  G09G2320/0233 ,  G09G2354/00 ,  G09G2360/16 ,  G09G2380/10 ,  H04N9/77

摘要： The present invention has an object of providing a display that makes uniform brightnesses of a display image in a plane of a display panel according to a position of an observer. The display includes a display panel, a surface light source panel that emits light toward a back surface of the display panel, a sensor that senses a position of an observer with respect to the display panel, and a controller, wherein a brightness can be adjusted for each of areas of the surface light source panel, and the controller adjusts respective brightnesses of the areas of the surface light source panel so that brightnesses of a display image in a plane of the display panel are made uniform, when the display panel is observed from the position of the observer sensed by the sensor.

公开(公告)号：US08953251B2

公开(公告)日：2015-02-10

申请号：US13487759

申请日：2012-06-04

申请人： Takashi Okada

发明人： Takashi Okada

IPC分类号： G02B15/14 ,  G02B15/16 ,  G02B13/00 ,  G02B15/17 ,  G02B15/173 ,  G02B13/12

CPC分类号： G02B15/161 ,  G02B13/0065 ,  G02B13/009 ,  G02B13/12 ,  G02B15/17 ,  G02B15/173

摘要： A zoom lens includes, in order from an object side to an image side, a first lens unit of a positive refractive power, a second lens unit of a negative refractive power, a reflective unit configured to bend an optical axis, and a rear lens group including two or more lens units, the reflective unit being stationary during zooming, the first and second lens units and two or more lens units of the rear lens group being moved during zooming, wherein the following conditions are satisfied: 4.3

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，负屈光力的第二透镜单元，被配置为弯曲光轴的反射单元和后透镜 组合包括两个或更多个透镜单元，反射单元在变焦期间是静止的，第一和第二透镜单元以及后透镜组的两个或更多个透镜单元在变焦期间被移动，其中满足以下条件：4.3 <＆bgr2t /&bgr;2w<12.0和2.1 <＆bgr; Rt /＆bgr; Rw <3.0，其中＆bgr; 2w和＆bgr; 2t分别表示广角端和远摄端的第二透镜单元的横向放大率， ＆bgr; Rw和＆bgr; Rt分别表示在后透镜组中具有最大可变功率贡献的透镜单元的广角端和远摄端的横向放大率。

公开(公告)号：US08801197B2

公开(公告)日：2014-08-12

申请号：US13523390

申请日：2012-06-14

申请人： Eiji Morikuni ,  Makoto Otani

发明人： Eiji Morikuni ,  Makoto Otani

IPC分类号： G03B21/00 ,  G03B21/14 ,  G02B3/02 ,  G02B13/08 ,  G02B13/18 ,  G02B13/12 ,  G02B13/16 ,  G03B33/12

CPC分类号： G02B13/12 ,  G02B13/16 ,  G03B21/142 ,  G03B33/12

摘要： A projection optical system which, when projecting an image of an optical modulator onto a projection surface on an enlarged scale, differs the aspect ratio of the image of the optical modulator and the aspect ratio of the image projected onto the projection surface, and includes, in order from the projection surface, a first group which is an enlargement optical system; a second group includes an adjustment optical component with a surface rotationally asymmetrical to an optical axis, when defining at least one direction of the vertical direction and the horizontal direction of the optical modulator as an adjustment direction in which conversion adjustment using compression or extension is performed, the adjustment optical component having at least one optical system which differs in power between the adjustment direction and another direction; and a third group which has a correction optical component with a surface rotationally symmetrical to the optical axis.

摘要翻译： 一种投影光学系统，当将光学调制器的图像以放大的尺度投射到投影表面上时，将光学调制器的图像的纵横比和投影到投影表面上的图像的纵横比不同， 从投影表面依次排列第一组，其是放大光学系统; 当将光学调制器的垂直方向和水平方向的至少一个方向定义为使用压缩或扩展进行转换调整的调整方向时，第二组包括具有与光轴旋转不对称的表面的调节光学部件 所述调整光学部件具有至少一个在所述调整方向与另一方向之间的功率不同的光学系统; 以及具有具有与光轴旋转对称的表面的校正光学部件的第三组。

公开(公告)号：US5825555A

公开(公告)日：1998-10-20

申请号：US529729

申请日：1995-09-18

申请人： Masahiro Oono ,  Tunehiko Sonoda ,  Satoru Tachihara ,  Koichi Maruyama

发明人： Masahiro Oono ,  Tunehiko Sonoda ,  Satoru Tachihara ,  Koichi Maruyama

IPC分类号： G01C15/00 ,  G02B27/09 ,  G02B13/08 ,  G01C1/10 ,  G02B13/12

CPC分类号： G01C15/004 ,  G02B19/0028 ,  G02B19/0052 ,  G02B27/09 ,  G02B27/0972

摘要： A beam projecting apparatus has a light source and a reflecting device for reflecting and rotating a bundle of light emitted from the light source for forming a reference plane. A shape converting optical system is provided in an optical path from the light source to the reflecting device for converting the bundle of light from an elliptical sectional shape to a circular sectional shape.

摘要翻译： 光束投射装置具有光源和用于反射和旋转从光源发射的光束以形成参考平面的反射装置。 在从光源到反射装置的光路中设置形状转换光学系统，用于将来自椭圆形截面形状的光束转换成圆形截面形状。

公开(公告)号：US5166716A

公开(公告)日：1992-11-24

申请号：US451373

申请日：1989-12-15

申请人： Kiyoshi Kawano

发明人： Kiyoshi Kawano

IPC分类号： G02B7/10 ,  G02B13/12 ,  G03B5/00 ,  G03B17/12 ,  G03B17/14

CPC分类号： G02B7/102

摘要： A zoom lens camera in which variable power lens groups are moved in an optical axis direction of a zoom photographing optical system to vary the focal length thereof by a rotatable cam ring. A converter lens is provided to vary the focal length of the zoom photographing optical system. The cam ring is provided with a converter lens insertion hole in which the converter lens can be inserted to come into the optical axis of the zoom photographing optical system when the cam ring stops at a specific position.

摘要翻译： 一种变焦镜头相机，其中可变焦距透镜组在变焦拍摄光学系统的光轴方向上移动，以通过可旋转的凸轮环改变其焦距。 提供变焦镜头以改变变焦拍摄光学系统的焦距。 凸轮环设置有转换器透镜插入孔，当凸轮环停止在特定位置时，可以将转换器透镜插入其中以进入变焦拍摄光学系统的光轴。

公开(公告)号：US5095326A

公开(公告)日：1992-03-10

申请号：US648942

申请日：1991-02-01

申请人： Katsuhiko Nozaki ,  Tetsuya Abe

发明人： Katsuhiko Nozaki ,  Tetsuya Abe

IPC分类号： G02B13/12 ,  G02B15/177 ,  G02B23/14 ,  G03B13/06 ,  G03B13/12

CPC分类号： G03B13/12 ,  G02B13/12 ,  G02B15/177 ,  G03B13/06 ,  G02B23/145 ,  G03B2215/051

摘要： A Kepler-type erect image viewfinder includes a first prism having an emergent surface being formed of a spherical or an aspherical surface and having a positive power. A second prism has an incident surface being formed of a spherical or aspherical surface and also having a positive power. The emergent surface of the first prism is spaced apart from the incident surface of the second prism, with an image-forming plane being positioned closer to the incident surface of the second prism than the emergent surface of the first prism. This arrangement enhances image magnification and compensates for field curvature, while simultaneously allowing for the viewfinder to have a reduced overall length.

摘要翻译： 开普勒型立式图像取景器包括具有由球形或非球面形成并具有正功率的出射表面的第一棱镜。 第二棱镜具有由球形或非球面形成并且具有正功率的入射表面。 第一棱镜的出射表面与第二棱镜的入射表面间隔开，图像形成平面定位成比第一棱镜的出射表面更靠近第二棱镜的入射表面。 这种布置提高了图像放大率并且补偿场曲率，同时允许取景器具有减小的总长度。

公开(公告)号：US4190322A

公开(公告)日：1980-02-26

申请号：US823932

申请日：1977-09-01

申请人： Stewart W. Wortley

发明人： Stewart W. Wortley

IPC分类号： G02B25/00 ,  G02B13/12

CPC分类号： G02B25/005

摘要： A magnifying apparatus comprising a pair of mutually adjustable complementary magnifying elements wherein one of the elements is an elongated member having one flat surface and one transversely arcuate surface, and the other element is of a circular configuration having at least one convex surface.

摘要翻译： 一种放大装置，包括一对相互调节的互补放大元件，其中元件之一是具有一个平坦表面和一个横向弓形表面的细长构件，另一个元件具有至少一个凸形表面的圆形构造。

公开(公告)号：US3485554A

公开(公告)日：1969-12-23

申请号：US3485554D

申请日：1966-07-21

申请人： SINGER GENERAL PRECISION

发明人： HEMSTREET HAROLD S

IPC分类号： G02B13/08 ,  G09B9/30 ,  G09B9/32 ,  G02B13/10 ,  G02B13/12

CPC分类号： G09B9/302 ,  G02B13/08 ,  G09B9/326

公开(公告)号：US11867966B2

公开(公告)日：2024-01-09

申请号：US17146803

申请日：2021-01-12

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： Hiroyuki Shobayashi

IPC分类号： G02B13/12 ,  G02B7/02 ,  H04N5/225 ,  H04N23/58

CPC分类号： G02B7/021 ,  G02B13/12 ,  H04N23/58

摘要： A lens system for forming an image of light incident from an object side on an imaging element arranged on an image surface side includes: a plurality of lens elements including free-curved surface lenses; and a diaphragm arranged between the plurality of lens elements. The lens elements form a front group arranged on the object side of the diaphragm, and a rear group arranged on the image surface side of the diaphragm. A first lens element closest to the object side in the plurality of lens elements has an aspherical surface that is rotationally symmetrical. The free-curved surface lenses each has a free-curved surface that is asymmetrical with respect to a first direction and a second direction crossing with each other. A free-curved surface lens satisfying a conditional expression “D×(SV−SH)/IH>0.08” is arranged on the rear group in the plurality of lens elements.