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    Projector and lamp unit
    3.
    发明授权
    Projector and lamp unit 有权
    投影机和灯泡单元

    公开(公告)号：US06467911B1

    公开(公告)日：2002-10-22

    申请号：US09413311

    申请日：1999-10-06

    申请人： Masayuki Ueyama ,  Yasumasa Sawai ,  Hideki Nagata ,  Akira Kawabata

    发明人： Masayuki Ueyama ,  Yasumasa Sawai ,  Hideki Nagata ,  Akira Kawabata

    IPC分类号： G03B2100

    CPC分类号： F21V17/00 ,  F21V17/107 ,  F21V17/164 ,  G03B21/10 ,  G03B21/2046 ,  G03B21/2053 ,  H04N5/74 ,  H04N9/3141 ,  H04N9/3144 ,  H04N9/315 ,  H04N9/3155

    摘要： A projector has a liquid crystal display panel for displaying an image, a lamp for illuminating the liquid crystal display panel, and a projection optical system for projecting light modulated by the image displayed. The lamp is held by a member whose position is variable to allow fitting of different types of lamp. The projector acquires data related to the lamp currently fitted and controls the light emission of the lamp on the basis of that data. The data includes the life of the lamp, so that the projector prevents the lamp to be lit longer than its remaining life. The remaining life is updated in accordance with how long the lamp has been lit. In addition to the lamp that is lit, an auxiliary lamp may be fitted so that the lamp that is lit can be switched to the auxiliary lamp as required. The lamp is formed into a single lamp unit together with a reflector or a casing to prevent the user from touching the lamp. The lamp is accessible for replacement only when it is in a predetermined position, where the lamp is never allowed when hot.

    摘要翻译： 投影仪具有用于显示图像的液晶显示面板，用于照亮液晶显示面板的灯和用于投影由所显示的图像调制的光的投影光学系统。 灯由位置可变的构件保持，以允许安装不同类型的灯。 投影机获取与当前安装的灯有关的数据，并根据该数据控制灯的发光。 数据包括灯的使用寿命，因此投影机可以防止灯泡比其剩余寿命长。 剩余寿命根据灯已点亮多长时间进行更新。 除了点亮的灯之外，还可以安装辅助灯，使得点亮的灯可以根据需要切换到辅助灯。 灯与反射器或壳体一起形成为单个灯单元，以防止使用者接触灯。 只有当灯处于预定位置时，才能进行更换，否则灯在热时不允许。

    Display optical apparatus having a rotary compensator to improve display contrast
    4.
    发明授权
    Display optical apparatus having a rotary compensator to improve display contrast 有权
    具有旋转补偿器的显示光学装置以改善显示对比度

    公开(公告)号：US06624862B1

    公开(公告)日：2003-09-23

    申请号：US09536914

    申请日：2000-03-28

    申请人： Kohtaro Hayashi ,  Kenji Konno ,  Yasumasa Sawai ,  Nobuyuki Kobayashi ,  Kenji Nishiguchi ,  Hideki Nagata

    发明人： Kohtaro Hayashi ,  Kenji Konno ,  Yasumasa Sawai ,  Nobuyuki Kobayashi ,  Kenji Nishiguchi ,  Hideki Nagata

    IPC分类号： G02F11335

    CPC分类号： H04N9/315 ,  G02F1/13363 ,  G02F1/1393 ,  G02F1/141 ,  G02F2001/133638 ,  G02F2203/02 ,  G02F2413/03 ,  G02F2413/08

    摘要： A display optical apparatus is provided with: a polarizing plate transmitting illuminating light having a predetermined polarization direction; a reflective liquid crystal display device reflecting the illuminating light transmitted by the polarizing plate as projected light of a polarization condition that differs according to pixel information for each pixel; and a phase plate changing the polarization conditions of the illuminating light and the projected light and directing the illuminating light and the projected light to the polarizing plate. The phase plate is disposed between the reflective liquid crystal display device and the polarizing plate. The black level of the projected light is adjusted by rotating the principal axis direction of the phase plate.

    摘要翻译： 显示光学装置设置有：透射具有预定偏振方向的照明光的偏振片; 反射型液晶显示装置，其将由偏振片透射的照明光反射为根据每个像素的像素信息而不同的偏振状态的投射光; 以及相位板，其改变照明光和投影光的偏振状态，并将照明光和投射光引导到偏振片。 相位板设置在反射型液晶显示装置和偏振片之间。 通过旋转相位板的主轴方向来调整投影光的黑色电平。

    Projector with fan controller
    5.
    发明授权
    Projector with fan controller 失效
    投影机带风扇控制器

    公开(公告)号：US06809780B2

    公开(公告)日：2004-10-26

    申请号：US09902346

    申请日：2001-07-10

    申请人： Yasumasa Sawai ,  Iwao Adachi ,  Satoshi Onishi ,  Kazuhiko Inoue ,  Hideki Nagata

    发明人： Yasumasa Sawai ,  Iwao Adachi ,  Satoshi Onishi ,  Kazuhiko Inoue ,  Hideki Nagata

    IPC分类号： H04N574

    CPC分类号： H04N5/7441 ,  H04N5/7458 ,  H04N9/3102 ,  H04N2005/745

    摘要： A projector, which projects color images using the three liquid crystal panels (41-43) while cooling them by the fans (611-613) for G, R, and B panels, comprises the level calculation unit (711) for finding the intensity levels of the R, G, and B components of image signals, the level calculation unit (721) for finding the voice levels of voice signals, the fan control unit (73) for controlling the numbers of revolutions of the fans (611-613), and the memory (761) for storing the cumulative amount of lighting time of the lamp (21). As the intensity levels get higher, the numbers of revolutions of the fans are increased, and as the cumulative amount of lighting time becomes larger, the numbers of revolutions of the fans are decreased. As a result, unnecessary noises caused by the fans (611-613) can be reduced while the liquid crystal panels (41-43) are properly cooled. Thus, the present invention has an object of reducing the noise of the fan which cools the display devices such as liquid crystal panels in a projector. Thus, the object of the present invention is to realize a reduction in noise caused by the fan for cooling a display device such as liquid crystal panels in a projector.

    摘要翻译： 用于G，R和B面板的风扇（611-613）冷却时，使用三个液晶面板（41-43）投影彩色图像的投影仪包括用于找到强度的电平计算单元（711） 图像信号的R，G和B分量的电平，用于找到语音信号的语音电平的电平计算单元（721），用于控制风扇转数的风扇控制单元（73） ）和用于存储灯（21）的点亮时间累积量的存储器（761）。 随着强度水平的提高，风扇的转速增加，随着照明时间的累积量变大，风扇的转速降低。 结果，在液晶面板（41-43）被适当冷却的情况下，可以减少由风扇（611-613）引起的不必要的噪声。 因此，本发明的目的是降低投影仪中的液晶面板等显示装置的冷却风扇的噪音。 因此，本发明的目的是实现降低由投影机中的液晶面板等显示装置冷却的风扇引起的噪声。

    Illumination system and projector
    6.
    发明授权
    Illumination system and projector 失效
    照明系统和投影机

    公开(公告)号：US06478431B1

    公开(公告)日：2002-11-12

    申请号：US09705044

    申请日：2000-11-02

    申请人： Shigeru Sawamura ,  Yasumasa Sawai ,  Hideki Nagata

    发明人： Shigeru Sawamura ,  Yasumasa Sawai ,  Hideki Nagata

    IPC分类号： G03B2128

    CPC分类号： H04N9/3114 ,  G02B26/008 ,  G02B26/0841

    摘要： An illumination system has a light source for emitting illumination light, a color wheel, a first deflecting member, and a second deflecting member. The color wheel transmits or reflects the illumination light while rotating about a rotation axis in such a way that illumination light exiting from the color wheel has colors that are switched sequentially with time. The first deflecting member deflects the illumination light in such a way that the illumination light enters the color wheel. The second deflecting member deflects the illumination light having exited from the color wheel. The illumination light entering the first deflecting member and the illumination light exiting from the second deflecting member are both substantially perpendicular to the rotation axis of the color wheel.

    摘要翻译： 照明系统具有用于发射照明光的光源，色轮，第一偏转构件和第二偏转构件。 色轮以围绕旋转轴旋转的方式透射或反射照明光，使得从色轮出射的照明光随着时间顺序切换的颜色。 第一偏转构件以照明光进入色轮的方式偏转照明光。 第二偏转构件偏转从色轮退出的照明光。 进入第一偏转构件的照明光和从第二偏转构件出射的照明光都基本上垂直于色轮的旋转轴线。

    Projector
    7.
    发明授权
    Projector 失效

    公开(公告)号：US06561655B2

    公开(公告)日：2003-05-13

    申请号：US09901357

    申请日：2001-07-09

    申请人： Satoshi Onishi ,  Kazuhiko Inoue ,  Iwao Adachi ,  Yasumasa Sawai ,  Hideki Nagata

    发明人： Satoshi Onishi ,  Kazuhiko Inoue ,  Iwao Adachi ,  Yasumasa Sawai ,  Hideki Nagata

    IPC分类号： G03B2118

    CPC分类号： G03B21/16

    摘要： A projector includes a duct having a connecting end for connection to an air inlet provided in a housing, and an air intake end for drawing in outside air for cooling the interior of the projector. The duct is made of a soft or flexible material and is capable of altering its shape. Thus, the duct can change the position of the air intake end in space, for example, to different positions. Further, the duct is pivotable on a pivot axis, and thus can change the opening direction of the air intake end circumferentially about the pivot axis. Therefore, selection of the position and/or opening direction of the air intake end so as to draw in the outside air suitable for cooling the interior depending on the usage forms of the projector achieves efficient cooling of the interior of the projector.

    Decentered lens holding structure and its positioning method
    9.
    发明授权
    Decentered lens holding structure and its positioning method 失效
    透镜保持结构及其定位方法

    公开(公告)号：US5898527A

    公开(公告)日：1999-04-27

    申请号：US828779

    申请日：1997-03-27

    申请人： Yasumasa Sawai ,  Tamotsu Kume ,  Hideki Nagata ,  Akira Sato ,  Masayuki Ueyama

    发明人： Yasumasa Sawai ,  Tamotsu Kume ,  Hideki Nagata ,  Akira Sato ,  Masayuki Ueyama

    IPC分类号： G02B7/02

    CPC分类号： G02B7/02 ,  G02B7/026

    摘要： A structure for holding a decentered lens inside a lens barrel, as well as an axisymmetrical lens. The structure includes: a lens barrel with a lens receiving part projecting inwardly and radially from an inner surface thereof; a decentered lens, with a first lens surface as a reference surface a centering axis of which is made to coincide with an axis of the lens barrel, and a second lens surface, which includes an annular flat surface around the second lens surface, in which the annular flat surface forms a recessed surface relative to the second lens surface, in which the annular flat surface is perpendicular to the axis of the lens barrel, and in which the annular flat surface contacts the lens receiving part of the lens barrel; and a washer, installed on the inner surface of the lens barrel, to fixedly hold the decentered lens, relative to the lens barrel, by pinching the decentered lens between the washer and the lens receiving part of the lens barrel.

    摘要翻译： 用于将偏心透镜保持在透镜镜筒内的结构以及轴对称透镜。 该结构包括：镜筒，其具有从其内表面向内并径向突出的透镜接收部分; 偏心透镜，具有第一透镜表面作为参考表面，其中心轴线与透镜镜筒的轴线重合，第二透镜表面包括围绕第二透镜表面的环形平坦表面，其中 环形平坦表面相对于第二透镜表面形成凹陷表面，其中环形平坦表面垂直于透镜镜筒的轴线，并且其中环形平坦表面接触透镜镜筒的透镜接收部分; 以及安装在透镜镜筒的内表面上的垫圈，通过将偏心镜片夹持在垫圈和透镜镜筒的透镜容纳部分之间来相对于镜筒固定地保持偏心透镜。

    Image projection device
    10.
    发明授权
    Image projection device 有权
    图像投影设备

    公开(公告)号：US08770760B2

    公开(公告)日：2014-07-08

    申请号：US13395620

    申请日：2009-09-11

    申请人： Yasumasa Sawai

    发明人： Yasumasa Sawai

    IPC分类号： G03B21/14 ,  G02F1/00

    CPC分类号： G03B21/2073 ,  G02B27/285 ,  H04N9/3114 ,  H04N9/3167

    摘要： The rotation axis of each mirror of a DMD (4) defines an angle of 45° with respect to long and short sides of a rectangular image display area. A polarization conversion optical system (24) makes a polarization direction of light from a light source (1) arranged in one direction and projects the arranged light, and after total reflection from the critical surface (31b) of a TIR prism (3), the light is guided to the DMD (4). When the incident surface of the critical surface (31b) and the mirror incident surface of the DMD (4) are in parallel with each other, a PBS prism array of the polarization conversion optical system (24) carries out the polarization and separation of the light from the light source (1) in a direction corresponding to the long side direction of the image display area of the DMD (4) in the case of the separation of the light from the light source (1) into two linear polarizations having different polarization directions. A polarization control means makes the two linear polarizations after the polarization and separation arranged in parallel or vertical polarization directions with respect to the incident surface of the critical surface (31b) and projects the same. Thus, a polarization condition of the light for illuminating the DMD (4) can be prevented from falling into disorder at a reflecting surface in the optical path, so that a light amount of the projection image can be prevented from reducing.

    摘要翻译： DMD（4）的每个反射镜的旋转轴线相对于矩形图像显示区域的长边和短边限定45°的角度。 偏振转换光学系统（24）使来自沿一个方向排列的光源（1）的光的偏振方向突出，并且在从TIR棱镜（3）的临界表面（31b）全反射之后， 光被引导到DMD（4）。 当临界面（31b）的入射面和DMD（4）的镜面入射面相互平行时，偏振光转换光学系统（24）的PBS棱镜阵列进行偏振光分离 在将来自光源（1）的光分离成具有不同的线性偏振的情况下，在与DMD（4）的图像显示区域的长边方向对应的方向上来自光源（1）的光 极化方向 极化控制装置使得相对于临界表面（31b）的入射表面平行或垂直偏振方向布置的偏振和分离之后的两个线性偏振投影相同。 因此，可以防止用于照亮DMD（4）的光的偏振状态在光路中的反射面处于无序状态，从而可以防止投影图像的光量减少。