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.

公开(公告)号：US06447122B1

公开(公告)日：2002-09-10

申请号：US09468405

申请日：1999-12-20

申请人： Yasushi Kobayashi ,  Soh Ohzawa ,  Ichiro Kasai

发明人： Yasushi Kobayashi ,  Soh Ohzawa ,  Ichiro Kasai

IPC分类号： G03B2114

CPC分类号： G03B21/28 ,  G02B17/086 ,  G02B27/0172 ,  G02B27/144 ,  G03B21/006

摘要： A compact, high resolution projection imaged display device using a reflective-type display element which uniformly illuminates the entirety of the display element without reducing illumination efficiency and ensures viewing conditions of excellent and uniform brightness extending to the fringe of the field of view is provided by an illumination optical system for redirecting illumination light from an illumination light source onto a reflective-type display element. The reflective-type display element reflects light into the viewing optical system wherein the illumination optical system is constructed so as to have an approximate conjugate relationship between the pupil of the user and the illumination light from the illumination light source.

摘要翻译： 一种紧凑，高分辨率的投影成像显示装置，其使用均匀地照亮整个显示元件而不降低照明效率的反射型显示元件，并且确保延伸到视野边缘的优异且均匀的亮度的观看条件由 照明光学系统，用于将照明光源的照明光重定向到反射型显示元件。 反射型显示元件将光反射到观察光学系统中，其中照明光学系统被构造成在用户的光瞳和来自照明光源的照明光之间具有近似的共轭关系。

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：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：US06323999B1

公开(公告)日：2001-11-27

申请号：US09630617

申请日：2000-08-02

申请人： Hiroaki Ueda ,  Kenji Ishibashi ,  Yasushi Kobayashi ,  Ichiro Kasai ,  Takeshi Endo ,  Yasushi Tanijiri

发明人： Hiroaki Ueda ,  Kenji Ishibashi ,  Yasushi Kobayashi ,  Ichiro Kasai ,  Takeshi Endo ,  Yasushi Tanijiri

IPC分类号： G03B2156

CPC分类号： G03B21/10 ,  G02B27/2228 ,  G02B27/2235 ,  G02B27/225 ,  G03B21/28

摘要： An image display apparatus is provided with a screen having retro-reflectivity, a liquid crystal display device displaying an image, a projection optical system projecting the light of the liquid crystal display device onto the screen, and a beam magnifier located close to the screen and magnifying the light beams, included in the projected light, expressing individual points of the image. The beam magnifier is composed of a diffraction optical element or a diffusing plate, and magnifies each light beam so that the magnification is larger in the direction of the horizontal field of view than in the direction of the vertical field of view. When images having parallax are provided for the left and right eyes, an upper limit of the magnification of the light beams is set in consideration of the distance between the left and right eyes to prevent cross-talk.

摘要翻译： 图像显示装置设置有具有反射率的屏幕，显示图像的液晶显示装置，将液晶显示装置的光投射到屏幕上的投影光学系统和位于屏幕附近的光束放大镜，以及 放大包含在投影光中的光束，表示图像的各个点。 光束放大镜由衍射光学元件或扩散板构成，并且放大每个光束，使得在水平视场方向上的放大倍率大于垂直视场方向。 当为左眼和右眼提供具有视差的图像时，考虑到左眼和右眼之间的距离来设定光束的倍率的上限以防止串扰。

公开(公告)号：US06922267B2

公开(公告)日：2005-07-26

申请号：US10100323

申请日：2002-03-18

申请人： Takeshi Endo ,  Yasushi Kobayashi ,  Yasushi Tanijiri ,  Tetsuya Noda ,  Hiroaki Ueda

发明人： Takeshi Endo ,  Yasushi Kobayashi ,  Yasushi Tanijiri ,  Tetsuya Noda ,  Hiroaki Ueda

IPC分类号： G02B5/32 ,  G02B27/01 ,  G02B27/02 ,  H04N5/64

CPC分类号： G02B27/0172 ,  G02B2027/0178

摘要： An image display apparatus has an image display device for displaying an image, an eyepiece optical system, including a holographic magnifying optical element, for magnifying and projecting the image, and a holographic filter, disposed either as part of the image display device or in the optical path between the image display device and the eyepiece optical system, for restricting the wavelength range of the image light.

摘要翻译： 图像显示装置具有用于显示图像的图像显示装置，包括用于放大和投影图像的全息放大光学元件的目镜光学系统，以及设置在图像显示装置的一部分上的全息滤光器 图像显示装置与目镜光学系统之间的光路，用于限制图像光的波长范围。

公开(公告)号：US06519090B2

公开(公告)日：2003-02-11

申请号：US09880436

申请日：2001-06-13

申请人： Takeshi Endo ,  Yasushi Kobayashi

发明人： Takeshi Endo ,  Yasushi Kobayashi

IPC分类号： G02B2500

CPC分类号： G02B27/28 ,  G02B5/30 ,  G02B5/3016 ,  G02B25/001 ,  G02B27/0172 ,  G02B2027/0132 ,  G02B2027/0178

摘要： A head-mounted display device and an eyepiece optical system suitable for use in the head-mounted display device is provided. The eyepiece optical system is capable of enlarging and displaying, to an eye of an observer, an image displayed on a two-dimensional display element. The eyepiece optical system includes, sequentially from the observer's eye, an aspherical resin lens, a spherical glass lens, and a polarization-conversion element disposed between the spherical glass lens and the two-dimensional display element. On a surface of the aspherical resin lens is provided a circularly-polarized-light-selective reflecting-transmitting surface for selectively reflecting and transmitting projection image light from the two-dimensional display element, depending on a rotation direction of circularly-polarized rays of the projection image light.

公开(公告)号：US06657602B2

公开(公告)日：2003-12-02

申请号：US09745462

申请日：2000-12-26

申请人： Takeshi Endo ,  Yasushi Kobayashi ,  Ichiro Kasai ,  Hideki Nagata

发明人： Takeshi Endo ,  Yasushi Kobayashi ,  Ichiro Kasai ,  Hideki Nagata

IPC分类号： G09G500

CPC分类号： G09G3/003 ,  G09G3/002 ,  H04N13/122 ,  H04N13/324 ,  H04N13/341 ,  H04N13/344 ,  H04N13/398

摘要： An image display apparatus has a signal input portion for receiving an image signal, an image compensator for electrically compensating the image signal for distortion so that a left and a right image displayed in an observer's left and right eyes have identical distortion and then outputting a left and right image signal that correspond to the left and right images, a signal switcher for switching between the left and right image signals output from the image compensator so as to output the left and right images alternately chronologically, a single two-dimensional image display device for displaying a two-dimensional image in accordance with the image signal output from the signal switcher, a pair of left and right eyepiece optical systems for directing image light exiting from the two-dimensional image display device to the observer's left and right eyes so that the two-dimensional image is displayed as a virtual image in the observer's eyes, and an optical path switcher for time-divisionally switching optical paths from the two-dimensional image display device to the observer's eyes in synchronism with switching between the left and right image signal output from the signal switcher so that the image light enters either the observer's left or right eye at a time.

摘要翻译： 图像显示装置具有用于接收图像信号的信号输入部分，用于电压补偿图像信号以进行失真的图像补偿器，使得在观察者左眼和右眼中显示的左和右图像具有相同的失真，然后输出左 和对应于左图像和右图像的右图像信号，用于在从图像补偿器输出的左和右图像信号之间切换以便按时间顺序输出左图像和右图像的信号切换器，单个二维图像显示设备 用于根据从信号切换器输出的图像信号显示二维图像;一对左右目镜光学系统，用于将从二维图像显示装置出射的图像光引导到观察者的左眼和右眼，使得 二维图像在观察者的眼睛中显示为虚像，以及用于时间的光路切换器 与从信号切换器输出的左右图像信号之间的切换同步地从二维图像显示装置向观察者的眼睛切换光路，使得图像光一次进入观察者的左眼或右眼。