公开(公告)号：US08496335B2

公开(公告)日：2013-07-30

申请号：US12423296

申请日：2009-04-14

Applicant: Yoshitaka Itoh

Inventor： Yoshitaka Itoh

IPC: G03B21/26 ,  G03B21/28 ,  G02B27/14 ,  F21V1/00 ,  F21V11/00

CPC classification number: G03B21/14 ,  G03B21/2073 ,  G03B21/208

Abstract: A projector includes an illumination optical system, a light modulation element, and a projection optical system. The illumination optical system includes a first light source section, a plurality of second light source sections, and an optical axis conversion element. The optical axis conversion element emits the light beam, which is input from the first light source section, so that an exit optical axis of the light beam approximately matches with an illumination optical axis, and emits the light beams, which are respectively input from the plurality of second light source sections, so that exit optical axes of the light beams intersect the exit optical axis of the light beam from the first light source section between the optical axis conversion element and the light modulation element.

Abstract translation: 投影仪包括照明光学系统，光调制元件和投影光学系统。 照明光学系统包括第一光源部分，多个第二光源部分和光轴转换元件。 光轴转换元件发射从第一光源部分输入的光束，使得光束的出射光轴与照明光轴近似匹配，并且发射分别从 多个第二光源部分，使得光束的出射光轴与光轴转换元件和光调制元件之间的来自第一光源部分的光束的出射光轴相交。

公开(公告)号：US08308307B2

公开(公告)日：2012-11-13

申请号：US12543232

申请日：2009-08-18

Applicant: Yoshitaka Itoh

Inventor： Yoshitaka Itoh

IPC: G03B21/20

CPC classification number: F21V7/04 ,  F21Y2113/00 ,  G03B21/28

Abstract: An illuminator includes: a first light source and a second light source that are disposed substantially symmetrically with respect to an illumination optical axis, wherein each of the first and second light sources includes an arc tube, a first reflector disposed to surround part of the entire space around the optical axis of the arc tube, the first reflector reflecting the light emitted from the arc tube toward an object to be illuminated, and a second reflector disposed on the opposite side of the optical axis of the arc tube to the first reflector, the second reflector reflecting the light emitted from the arc tube toward the first reflector.

Abstract translation: 照明器包括：第一光源和第二光源，其相对于照明光轴基本对称地设置，其中第一和第二光源中的每一个包括电弧管，第一反射器，被设置为围绕整个部分 围绕光电管的光轴的空间，第一反射器将从电弧管发射的光朝向被照射物体反射，以及第二反射器，设置在与第一反射器的电弧管的光轴相反的一侧， 所述第二反射器将从所述电弧管发射的光朝向所述第一反射器反射。

公开(公告)号：US07445345B2

公开(公告)日：2008-11-04

申请号：US11013713

申请日：2004-12-17

Applicant: Yoshitaka Itoh ,  Shohei Yoshida ,  Shoichi Uchiyama ,  Junichi Nakamura ,  Takashi Nitta ,  Tsunemori Asahi

Inventor： Yoshitaka Itoh ,  Shohei Yoshida ,  Shoichi Uchiyama ,  Junichi Nakamura ,  Takashi Nitta ,  Tsunemori Asahi

IPC: G03B21/20 ,  G03B21/26 ,  G03B21/28 ,  G02F1/1335 ,  H04N5/74 ,  G02B27/14 ,  G02B27/12

CPC classification number: G02B13/16 ,  G02B13/0095 ,  G03B21/006 ,  G03B21/14 ,  G03B21/2066 ,  G03B33/12 ,  H04N9/3105 ,  H04N9/3126

Abstract: A projection-type display device 1 including a light source 10, an optical integrator 20, dichroic mirrors 30 and 35, a reflecting mirror 36, a relay optical system 40, parallelizing lenses 50B, 50G and 50R, liquid crystal light valves 60B, 60G and 60R, incident side lenses 70B, 70G and 70R, a light-synthesizing cross dichroic prism 80, a relay lens 90, an emergent side lens 95, a liquid crystal light valve 100 and a projection lens 110, and liquid crystal light valve 100 is provided in the rear stage of liquid crystal light valves 60B, 60G and 60R.

Abstract translation: 包括光源10，光学积分器20，二向色镜30和35的反射镜36，中继光学系统40，平行化透镜50B，50G和50R的投影型显示装置1，液晶光阀 60B，60G和60R，入射侧透镜70B，70G和70R，光合成十字分色棱镜80，中继透镜90，出射侧透镜95，液晶光阀100和投影 透镜110和液晶光阀100设置在液晶光阀60B，60G和60R的后级中。

公开(公告)号：USRE39951E1

公开(公告)日：2007-12-25

申请号：US09987953

申请日：1997-06-25

Applicant: Yoshitaka Itoh ,  Toshiaki Hashizume

Inventor： Yoshitaka Itoh ,  Toshiaki Hashizume

IPC: G02B27/10 ,  G02B5/30

CPC classification number: G02B27/285 ,  G02B27/283 ,  G02F1/133536 ,  G02F1/13362 ,  G02F2001/13355

Abstract: A polarizing conversion device in accordance with the invention includes a first optical element for condensing an incident beam and forming a plurality of intermediate beams spatially separated from one another, and a second optical element for spatially separating each intermediate beam into two polarized beams and aligning the polarization directions of the polarized beams, thereby obtaining the same type of polarized beams. In the second optical element, a shading plate is placed to prevent light from directly entering a section corresponding to a reflecting plane of a polarizing separation unit array. Since the ability of separating the intermediate beam into two polarized beams is thereby enhanced, it is possible to perform conversion into the same type of polarized beams polarized in the same direction, with high efficiency.

Abstract translation: 根据本发明的偏振转换装置包括用于聚集入射光束并形成彼此空间分离的多个中间光束的第一光学元件和用于将每个中间光束空间分离成两个偏振光束并将其对准 偏振光束的极化方向，从而获得相同类型的偏振光束。 在第二光学元件中，设置遮光板以防止光直接进入与偏振分离单元阵列的反射平面对应的部分。 由于将中间光束分离成两个偏振光束的能力由此增强，所以可以高效率地进行向相同方向偏振的相同类型的偏振光束的转换。

公开(公告)号：US6036318A

公开(公告)日：2000-03-14

申请号：US11097

申请日：1998-01-27

Applicant: Yoshitaka Itoh

Inventor： Yoshitaka Itoh

IPC: H04N5/74 ,  H04N9/31 ,  G03B21/14

CPC classification number: H04N9/3167 ,  H04N5/7441

Abstract: A projection type display apparatus 1 is roughly composed of a polarized light beam illumination device 100, a polarization beam splitter 200, a reflection type liquid crystal device 300, and a projection optical system 500. The polarized light beam illumination device 100 includes a light source unit 110, a first optical element 120 and a second optical element 130, and the light beams emerging from the light source unit 110 are divided into a plurality of intermediate light beams by the first optical element 120 and thereafter converted into polarized light beams having approximately one kind of a polarization direction by the second optical element 130. The polarized light beams are reflected at the polarization beam splitter 200 and modulated by the reflection type liquid crystal device 300 and thereafter projected to a projection surface 600 through the projection optical system 500. According to the projection type display apparatus arranged as described above, the length of a light path is shortened to thereby prevent light loss as well as uneven brightness to a region to be illuminated, by which a projected image having uniform brightness and good quality can be obtained.

Abstract translation: PCT No.PCT / JP97 / 01819 Sec。 371日期：1998年1月27日 102（e）日期1998年1月27日PCT提交1997年5月29日PCT公布。 公开号WO97 / 45768 日期1997年12月4日投影型显示装置1大致由偏振光束照明装置100，偏振光束分离器200，反射型液晶装置300和投影光学系统500构成。偏振光束照明装置 100包括光源单元110，第一光学元件120和第二光学元件130，并且从光源单元110出射的光束被第一光学元件120分成多个中间光束，然后转换成 通过第二光学元件130具有大约一种偏振方向的偏振光束。偏振光束在偏振分束器200处被反射并被反射型液晶装置300调制，然后通过 投影光学系统500.根据如上所述配置的投影型显示装置， 缩短了光路的长度，从而可以防止光照损失以及亮度不均匀的亮度，从而可以获得具有均匀亮度和良好质量的投影图像。

公开(公告)号：US5973840A

公开(公告)日：1999-10-26

申请号：US91834

申请日：1998-06-29

Applicant: Yoshitaka Itoh ,  Toshiaki Hashizume

Inventor： Yoshitaka Itoh ,  Toshiaki Hashizume

IPC: G02B3/00 ,  G02B27/14 ,  G02B27/28 ,  G03B33/12 ,  H04N5/74 ,  H04N9/31 ,  G02B27/10

CPC classification number: G02B3/0043 ,  G02B27/1046 ,  G02B27/123 ,  G02B27/145 ,  G02B27/149 ,  G02B27/283 ,  G02B27/285 ,  G02B3/0056 ,  G03B33/12 ,  H04N9/3105 ,  H04N9/315 ,  G02B3/0062 ,  H04N5/74 ,  H04N5/7441

Abstract: An apparatus which makes dark lines due to a central axis of a cross dichroic prism sufficiently inconspicuous. In a second lens array, minute lenses arranged on the same column include three different types of minute lenses having optical axes at different positions. Each row of the minute lenses consists of one of the three types of minute lenses. Partial light fluxes respectively passing through the minute lenses have optical axes at different positions relative to a center of a lighting area of a liquid-crystal light bulb, so as to illuminate different illumination areas.

Abstract translation: PCT No.PCT / JP97 / 03901 Sec。 371日期1998年6月29日第 102（e）日期1998年6月29日PCT 1997年10月27日PCT公布。 公开号WO98 / 19212 PCT 日期1998年7月5日由于交叉二向色棱镜的中心轴足够不明显而使暗线产生的设备。 在第二透镜阵列中，布置在同一列上的微透镜包括在不同位置具有光轴的三种不同类型的微透镜。 每一行分钟镜都由三种类型的微型镜头组成。 分别通过微透镜的部分光束相对于液晶灯泡的照明区域的中心具有不同位置的光轴，以照亮不同的照明区域。

公开(公告)号：US08926100B2

公开(公告)日：2015-01-06

申请号：US13408166

申请日：2012-02-29

Applicant: Yoshitaka Itoh ,  Hiroyasu Kaseya ,  Fumika Sumiyama ,  Junichi Okamoto

Inventor： Yoshitaka Itoh ,  Hiroyasu Kaseya ,  Fumika Sumiyama ,  Junichi Okamoto

IPC: G03B21/00 ,  G03B21/14 ,  H01S3/10 ,  H01S5/00 ,  G02B27/12 ,  G02B27/30 ,  G02B19/00 ,  G02B27/09

CPC classification number: G02B19/0066 ,  G02B19/0028 ,  G02B27/0961 ,  G02B27/0972

Abstract: An illumination device includes a light source including plural light emitting devices arranged in a pattern and that generate and guide light, the light emitting devices having tilted gain regions wherein guiding directions of the light are tilted with respect to a perpendicular of output surfaces of the light source, an optical axis conversion device that bends optical axes of the light output from the light source, and a light distribution control device that controls a light distribution angle of the light output from the optical axis conversion device, wherein the light emitting devices are super luminescent diodes, and the light output from the light distribution control device diverge.

Abstract translation: 照明装置包括光源，其包括以图案排列并且产生和引导光的多个发光器件，所述发光器件具有倾斜的增益区域，其中所述光的引导方向相对于所述光的输出表面的垂直线倾斜 源极，使从光源输出的光的光轴弯曲的光轴转换装置，以及控制从光轴转换装置输出的光的配光角度的配光控制装置，其中，发光装置为超 发光二极管，并且来自配光控制装置的光输出发散。

公开(公告)号：US20110304827A1

公开(公告)日：2011-12-15

申请号：US13158739

申请日：2011-06-13

Applicant: Yoshitaka Itoh

Inventor： Yoshitaka Itoh

IPC: G03B21/14

CPC classification number: H04N9/3188 ,  G03B21/2073 ,  H04N9/3167

Abstract: A projector includes a liquid crystal light valve to which the image data is written in a line sequential manner, a polarization switching element for switching between the first and second polarization states throughout the switching areas in a line sequential manner, and a birefringent optical element for changing the light path of the incident light in accordance with the polarization state thereof. The boundary position between the switching areas of the first and second polarization states moves in sync with the boundary position between the first and second image data writing areas corresponding to the first and second sub-frame.

Abstract translation: 一种投影仪，包括以行顺序方式写入图像数据的液晶光阀，用于以顺序方式在整个切换区域中切换第一和第二偏振状态的偏振切换元件，以及双折射光学元件， 根据其偏振状态改变入射光的光路。 第一和第二极化状态的切换区域之间的边界位置与对应于第一和第二子帧的第一和第二图像数据写入区域之间的边界位置同步移动。

公开(公告)号：US07364305B2

公开(公告)日：2008-04-29

申请号：US11123123

申请日：2005-05-06

Applicant: Yoshitaka Itoh

Inventor： Yoshitaka Itoh

IPC: G03B21/14

CPC classification number: G03B21/006

Abstract: A projector which is small in size and excellent in light utilization efficiency while keeping the advantage of a spatially-pixel-arrangement type is provided. The luminous flux emitted from a light source is separated by a color separation system into a plurality of kinds of colors of light different in exit direction. These separated colors of light are modulated by a light valve, to form first optical images. The light valve has a plurality of sub-pixels provided corresponding to the colors of light and micro-lenses to focus the colors of light corresponding to the sub-pixels. The sub-pixels are structured in a size nearly equal to a size of a color of light to be focused on the relevant sub-pixel by micro-lenses. Accordingly, the first optical image is in a form non-analogous with the actual projection image. The first optical images are converted into second optical images having a desired aspect ratio by an anamorphic projection system, and then projected.

Abstract translation: 提供了一种尺寸小，光利用效率优异的投影仪，同时保持了空间像素排列型的优点。 从光源发出的光束被色分离系统分离成出射方向不同的多种颜色的光。 这些分离的光的颜色由光阀调制，以形成第一光学图像。 光阀具有与光和微透镜的颜色对应地设置的多个子像素，以对应于子像素的光的颜色。 子像素被构造成大致等于通过微透镜聚焦在相关子像素上的光的颜色的大小的尺寸。 因此，第一光学图像是与实际投影图像非类似的形式。 通过变形投影系统将第一光学图像转换成具有期望的纵横比的第二光学图像，然后投影。

公开(公告)号：US07026901B2

公开(公告)日：2006-04-11

申请号：US10066680

申请日：2002-02-06

Applicant: Yousuke Yanagi ,  Tetsuo Oka ,  Yoshitaka Itoh ,  Masaaki Yoshikawa

Inventor： Yousuke Yanagi ,  Tetsuo Oka ,  Yoshitaka Itoh ,  Masaaki Yoshikawa

IPC: H01F7/00

CPC classification number: H01F13/00 ,  F25B9/14 ,  F25D19/006 ,  H01F6/008

Abstract: A cold head is disposed in an insulating container and cooled by a refrigerator. A superconductor is disposed in the insulating container, contacting the cold head, and is cooled to its superconduction transition temperature or lower by heat conduction. A magnetizing coil is disposed outside the insulating container for applying a magnetic field to the superconductor. Control is performed so that a magnetic field determined considering the magnetic field to be captured by the superconductor is applied. A pulsed magnetic field is applied to the superconductor a plurality of times. Each pulsed magnetic field is applied when the temperature of the superconductor is a predetermined temperature or lower. A maximum pulsed magnetic field is applied at least once in an initial or intermediate stage of the repeated application of pulsed magnetic fields. After that, a pulsed magnetic field equal to or less than the maximum pulsed magnetic field is applied. Pulsed magnetic fields are repeatedly applied while the temperature of the superconductor is lowered. A pulsed magnetic field is applied when the temperature T0 of a central portion of the superconductor is the superconduction transition temperature or lower and the temperature of a peripheral portion is higher than T0. The temperature of the entire superconductor is brought close to T0 to apply another pulsed magnetic field. The magnetizing coil faces at least one of two opposite sides of the superconductor to apply pulsed magnetic fields to the superconductor in its magnetization direction.

Abstract translation: 将冷头设置在绝热容器中并用冰箱冷却。 超导体设置在绝热容器中，与冷头接触，并通过热传导而冷却至其超导转变温度或更低。 磁化线圈设置在绝缘容器的外部，用于向超导体施加磁场。 执行控制，使得考虑要由超导体捕获的磁场确定的磁场被施加。 将脉冲磁场多次施加到超导体。 当超导体的温度为预定温度或更低时，施加每个脉冲磁场。 在重复施加脉冲磁场的初始阶段或中间阶段，最大脉冲磁场施加至少一次。 之后，施加等于或小于最大脉冲磁场的脉冲磁场。 当超导体的温度降低时，脉冲磁场被重复施加。 当超导体的中心部分的温度T 0 <0>超导转变温度以下且周边部分的温度高于T 0 0 。 整个超导体的温度接近T 0 0以施加另一个脉冲磁场。 磁化线圈面向超导体的两个相对侧中的至少一个，以在其磁化方向上向超导体施加脉冲磁场。