公开(公告)号：US06297898B1

公开(公告)日：2001-10-02

申请号：US09395615

申请日：1999-09-14

申请人： Yasushi Tanijiri ,  Hiroaki Ueda ,  Kenji Ishibashi ,  Yasushi Kobayashi ,  Takatoshi Ishikawa ,  Soh Ohzawa ,  Hideki Nagata

发明人： Yasushi Tanijiri ,  Hiroaki Ueda ,  Kenji Ishibashi ,  Yasushi Kobayashi ,  Takatoshi Ishikawa ,  Soh Ohzawa ,  Hideki Nagata

IPC分类号： G02B2608

CPC分类号： G02B26/105 ,  G02B7/008 ,  G02B7/1821

摘要： An optical deflection device for deflecting light by a mirror mounted on the tip of a rod-like torsion spring which oscillates at near resonance frequency. An optical deflection device which produces a large amplitude by exerting control to avoid variation in the natural oscillation frequency of the torsion spring (including mirror) regardless of temperature fluctuation.

摘要翻译： 一种光学偏转装置，用于通过安装在杆状扭转弹簧的尖端处的反射镜来偏转光，其以接近共振频率振荡。 通过进行控制来产生大振幅的光偏转装置，以避免扭簧（包括反射镜）的固有振荡频率的变化，而不管温度波动如何。

公开(公告)号：US6115186A

公开(公告)日：2000-09-05

申请号：US315627

申请日：1999-05-20

申请人： Hideki Nagata ,  Kohtaro Hayashi ,  Ichiro Kasai ,  Soh Ohzawa ,  Akira Sato ,  Yasushi Kobayashi

发明人： Hideki Nagata ,  Kohtaro Hayashi ,  Ichiro Kasai ,  Soh Ohzawa ,  Akira Sato ,  Yasushi Kobayashi

IPC分类号： G02B26/10 ,  G02B25/00 ,  G02B27/01 ,  G02B27/02 ,  H04N5/64 ,  G02B27/14

CPC分类号： G02B27/017 ,  G02B27/01

摘要： A scanning-type image viewing optical system has a light source for emitting luminous flux; a main scanning means for scanning luminous flux in a first direction; a sub-scanning means for scanning luminous flux in a second direction different from the first direction; and an eyepiece lens for directing luminous flux scanned by the two scanning means to the pupil of an observer, wherein the main scanning means has a conjugate relationship with the pupil position of the observer via the eyepiece lens, and when the pupil diameter, i.e., the luminous flux diameter of the incident luminous flux at the pupil position of the observer, is designated d and the main scan diameter, i.e., the luminous flux diameter exiting the main scanning means, is designated d', the conjugate magnification .beta. calculated by d/d' satisfies the conditional equation .beta..ltoreq.0.85.

摘要翻译： 扫描型图像观察光学系统具有用于发射光通量的光源; 主扫描装置，用于沿第一方向扫描光通量; 用于沿与第一方向不同的第二方向扫描光通量的副扫描装置; 以及用于将由两个扫描装置扫描的光束引导到观察者的瞳孔的目镜，其中主扫描装置经由目镜透镜与观察者的瞳孔位置具有共轭关系，并且当瞳孔直径 在观察者的瞳孔位置处的入射光通量的光束直径被指定为d，主扫描直径（即，将主扫描装置的光束直径）指定为d'，由d计算的共轭倍率β / d'满足条件方程β

公开(公告)号：US6097526A

公开(公告)日：2000-08-01

申请号：US316818

申请日：1999-05-21

申请人： Hideki Nagata ,  Kohtaro Hayashi ,  Ichiro Kasai ,  Soh Ohzawa ,  Akira Sato ,  Yasushi Kobayashi

发明人： Hideki Nagata ,  Kohtaro Hayashi ,  Ichiro Kasai ,  Soh Ohzawa ,  Akira Sato ,  Yasushi Kobayashi

IPC分类号： G02B26/10 ,  G02B13/00 ,  G02B27/01 ,  G02B27/02 ,  H04N5/64 ,  G02B26/08

CPC分类号： G02B27/0101 ,  G02B27/01 ,  G02B27/017 ,  G02B27/0172

摘要： A scanning-type image viewing optical system has a light source for emitting luminous flux; a main scanning means for scanning luminous flux in a first direction; a sub-scanning means for scanning luminous flux in a second direction different from the first direction; and an eyepiece lens for directing luminous flux scanned by the two scanning means to the pupil of an observer, wherein the main scanning means has a conjugate relationship with the pupil position of the observer via the eyepiece lens, and when the pupil diameter, i.e., the luminous flux diameter of the incident luminous flux at the pupil position of the observer, is designated d and the main scan diameter, i.e., the luminous flux diameter exiting the main scanning means, is designated d', the conjugate magnification .beta. calculated by d/d' satisfies the conditional equation 1.2.ltoreq..beta..

摘要翻译： 扫描型图像观察光学系统具有用于发射光通量的光源; 主扫描装置，用于沿第一方向扫描光通量; 用于沿与第一方向不同的第二方向扫描光通量的副扫描装置; 以及用于将由两个扫描装置扫描的光束引导到观察者的瞳孔的目镜，其中主扫描装置经由目镜透镜与观察者的瞳孔位置具有共轭关系，并且当瞳孔直径 在观察者的瞳孔位置处的入射光通量的光束直径被指定为d，主扫描直径（即，将主扫描装置的光束直径）指定为d'，由d计算的共轭倍率β / d'满足条件方程式1.2

公开(公告)号：US06803884B1

公开(公告)日：2004-10-12

申请号：US09521657

申请日：2000-03-08

申请人： Soh Ohzawa ,  Yasushi Tanijiri

发明人： Soh Ohzawa ,  Yasushi Tanijiri

IPC分类号： G09G500

CPC分类号： G09G3/003 ,  G02B27/0172 ,  G02B2027/0118 ,  G02B2027/0132 ,  G09G3/002

摘要： A projection image display device has a first display unit for displaying a first image based on a first image signal, an enlarging optical system for enlarging the first image and projecting the first image to the eye of an observer and a second display unit for displaying a second image based on a second image signal and directly projecting the second image to the eye of an observer.

摘要翻译： 投影图像显示装置具有用于基于第一图像信号显示第一图像的第一显示单元，用于放大第一图像并将第一图像投影到观察者的眼睛的放大光学系统，以及用于显示第一图像的第二显示单元 基于第二图像信号的第二图像，并且将第二图像直接投影到观察者的眼睛。

公开(公告)号：US5911490A

公开(公告)日：1999-06-15

申请号：US921447

申请日：1997-08-29

申请人： Takatoshi Ishikawa ,  Soh Ohzawa

发明人： Takatoshi Ishikawa ,  Soh Ohzawa

IPC分类号： G03B21/132 ,  G03B21/28

CPC分类号： G02B17/08 ,  G02B17/0884 ,  G02B19/0028 ,  G02B19/0047 ,  G03B21/132 ,  Y10S353/03

摘要： An overhead projector provides an unobstructed view of projected images by minimizing the vertical dimension of the projector and provides sufficient brightness of projected images by minimizing the loss of light. The light emitted from a light source housed in the body of the projector is reflected by a first reflection mirror and directed, through a transparent stage on which a transparent original is placed, to a second reflection mirror. Meanwhile, on the transparent stage, the principal ray axis of the light beam forms an angle .theta. with respect to the center axis of the surface of the transparent original. After reaching the second reflection mirror and being reflected thereby, the light is condensed into a projection lens unit, and is projected therefrom onto a screen to form thereon an image of the transparent original.

摘要翻译： 高架投影仪通过最小化投影仪的垂直尺寸并提供投影图像的无阻碍视图，并通过最小化光的损失来提供足够的投影图像亮度。 从容纳在投影仪主体中的光源发射的光被第一反射镜反射，并通过其上放置透明原稿的透明台指向第二反射镜。 同时，在透明阶段，光束的主光线轴线相对于透明原件的表面的中心轴线形成一个角度θ。 在到达第二反射镜并被其反射之后，光被聚光成投影透镜单元，并从其上突出到屏幕上以在其上形成透明原稿的图像。

公开(公告)号：US5683161A

公开(公告)日：1997-11-04

申请号：US653747

申请日：1996-05-23

申请人： Takatoshi Ishikawa ,  Soh Ohzawa ,  Katsuhiro Takamoto

发明人： Takatoshi Ishikawa ,  Soh Ohzawa ,  Katsuhiro Takamoto

IPC分类号： G02F1/13 ,  G03B21/00 ,  G03B21/14

CPC分类号： G03B21/147 ,  G03B21/006

摘要： A projecting optical device which simultaneously projects one object onto two or more different screens has a first screen, a second screen, a first projecting optical system which projects the object onto the first screen, and a second projecting optical system which projects the object onto the second screen and does not share an optical element with the first projecting optical system. A first base line connecting the center of the object to the center of the image projected on the first screen by the first optical system and a second base line connecting the center of the object to the center of the image projected on the second screen by the second optical system are not parallel to each other.

摘要翻译： 同时将一个物体投影到两个或更多个不同屏幕上的投影光学装置具有第一屏幕，第二屏幕，将物体投影到第一屏幕上的第一投影光学系统和将物体投影到第二屏幕上的第二投影光学系统 并且不与第一投影光学系统共享光学元件。 第一基线，通过第一光学系统将物体的中心与投影在第一屏幕上的图像的中心连接，第二基线将物体的中心与投影在第二屏幕上的图像的中心连接 第二光学系统彼此不平行。

公开(公告)号：US06331879B1

公开(公告)日：2001-12-18

申请号：US08749887

申请日：1996-11-18

申请人： Yasumasa Sawai ,  Takashi Ohta ,  Nobuo Mushiake ,  Hideki Nagata ,  Soh Ohzawa

发明人： Yasumasa Sawai ,  Takashi Ohta ,  Nobuo Mushiake ,  Hideki Nagata ,  Soh Ohzawa

IPC分类号： G02F11335

CPC分类号： G02F1/13362 ,  G02F2001/13355 ,  H04N5/74 ,  H04N5/7441 ,  H04N9/3105 ,  H04N9/3167

摘要： A liquid crystal projector includes an illumination optical system provided with a light source, first and second lens arrays arranged in this order from the light source, a liquid crystal panel, and a polarization changing optical system arranged between the first and second lens arrays. This makes it possible to install the polarization changing optical system and the optical integrator in a smaller space.

摘要翻译： 一种液晶投影仪包括：设置有光源的照明光学系统，从光源依次排列的第一和第二透镜阵列，液晶面板和布置在第一和第二透镜阵列之间的偏振改变光学系​​统。 这使得可以在更小的空间中安装偏振变化光学系统和光学积分器。

公开(公告)号：US5633759A

公开(公告)日：1997-05-27

申请号：US529294

申请日：1995-09-15

申请人： Hideki Nagata ,  Soh Ohzawa ,  Hiroyuki Matsumoto ,  Masakuni Tai

发明人： Hideki Nagata ,  Soh Ohzawa ,  Hiroyuki Matsumoto ,  Masakuni Tai

IPC分类号： G02B15/173 ,  G02B15/14

CPC分类号： G02B15/173

摘要： A zoom lens system of the invention is double telephoto type zoom lens system having a positive/negative/positive/negative refractive power arrangement. During zooming from the wide angle side toward the telephoto side, the first through fourth lens units move such that the distance between the first and second lens units increases and the distance between the third and fourth lens units decreases. The refractive power of the first lens unit and the refractive power of the fourth lens unit are appropriately prescribed so that an adequate back focal lens distance is preserved.

摘要翻译： 本发明的变焦透镜系统是具有正/负/正/负屈光力配置的双长焦型变焦透镜系统。 在从广角侧向望远侧变焦时，第一至第四透镜单元移动，使得第一和第二透镜单元之间的距离增加，并且第三和第四透镜单元之间的距离减小。 适当地规定第一透镜单元的屈光力和第四透镜单元的屈光力，使得保留足够的后焦距透镜距离。

公开(公告)号：US06683726B2

公开(公告)日：2004-01-27

申请号：US09952529

申请日：2001-09-14

申请人： Takeshi Endo ,  Yasushi Kobayashi ,  Yoshie Shimizu ,  Soh Ohzawa

发明人： Takeshi Endo ,  Yasushi Kobayashi ,  Yoshie Shimizu ,  Soh Ohzawa

IPC分类号： G02B2714

CPC分类号： H04N9/3111 ,  H04N5/7441 ,  H04N5/7491 ,  H04N9/3164

摘要： An image display apparatus has a reflective display element for displaying a two-dimensional image on a display plane, a light source for emitting illuminating light for illuminating said display plane, a magnifier optical system for magnifying and projecting said two-dimensional image, and an optical member which is composed of a medium having a refractive index greater than or equal to unity and has at least three optical planes of a first plane, a second plane, and a third plane. The magnifier optical system is substantially in concentricity with said display plane; the illuminating light from said light source passes through said first plane and then through said second plane, thereby illuminating said display plane; and the reflected light from said display plane passes through said second plane and is then reflected in said first plane, thereby passing through said third plane and being incident on said magnifier optical system.

摘要翻译： 一种图像显示装置具有用于在显示平面上显示二维图像的反射显示元件，用于发射用于照亮所述显示平面的照明光的光源，用于放大和投影所述二维图像的放大镜光学系统，以及 光学构件，其由具有大于或等于1的折射率的介质组成，并且具有至少三个第一平面，第二平面和第三平面的光学平面。 放大镜光学系统基本上与所述显示平面同心; 来自所述光源的照明光穿过所述第一平面，然后通过所述第二平面，从而照亮所述显示平面; 并且来自所述显示平面的反射光通过所述第二平面，然后在所述第一平面中被反射，从而穿过所述第三平面并入射在所述放大镜光学系统上。

公开(公告)号：US07002751B2

公开(公告)日：2006-02-21

申请号：US09963308

申请日：2001-09-26

申请人： Yasushi Kobayashi ,  Soh Ohzawa

发明人： Yasushi Kobayashi ,  Soh Ohzawa

IPC分类号： G02B27/14

CPC分类号： G02B27/0172

摘要： An image display apparatus forms illumination light from a light source into image light by using a reflective display device, and directs the image light through an eyepiece optical system to an eye to present a virtual image of the image carried by the image light. To realize an image display apparatus of this type that is compact, affords a sufficiently long eye relief, and offers wide-field, high-quality images, a combiner for making the optical path of the illumination light from the light source overlap with that of the image light is disposed inside the eyepiece optical system, a positive lens is provided in the rear potion of the eyepiece optical system between the display device and the combiner, a concave reflective surface is provided in the front portion of the eyepiece optical system between the combiner and the observation point, and the eyepiece optical system is designed to be overtelecentric as a whole.