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1. 发明授权

US08770760B2 Image projection device 有权
标题翻译：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。

2. 发明申请

US20120162615A1 Image Projection Apparatus 有权
标题翻译：图像投影仪
公开(公告)号：US20120162615A1
公开(公告)日：2012-06-28
申请号：US13338133
申请日：2011-12-27
申请人： Yasumasa Sawai
发明人： Yasumasa Sawai
IPC分类号： G03B21/28
CPC分类号： G03B21/008 , G02B26/0833 , G02B27/0018 , G02B27/0927 , G02B27/0994 , G03B33/12 , H04N9/3152 , H04N9/3161
摘要： Assuming that a normal line of an image display surface of a DMD is a normal line Ax of the image display surface, that a direction in which a light beam specularly reflected by a mirror is outputted is a specular reflection direction R, and that an angle that the specular reflection direction R forms with respect to the normal line Ax of the image display surface is denoted by γ, an image projection apparatus satisfies the following conditional expression: β(2·k−1)≧2·γ−β(2·k)≧β(2·k+1), where β(2·k−1) and β(2·k+1) represent a diffraction angle of an odd-order diffracted light, and β(2·k) represents a diffraction angle of an even-order diffracted light.
摘要翻译：假设DMD的图像显示面的法线是图像显示面的法线Ax，输出镜面镜面反射的光束的方向是镜面反射方向R，并且角度相对于图像显示面的法线Ax形成的镜面反射方向R由γ表示，图像投影装置满足以下条件式：＆bgr;（2·k-1）≥2·γ＆bgr; （2·k + 1）表示奇数衍射光的衍射角，＆bgr（2·k-1）和（b）（2·k-1） ;（2·k）表示偶数衍射光的衍射角。

3. 发明授权

US08061855B2 Projection apparatus 有权
标题翻译：投影仪
公开(公告)号：US08061855B2
公开(公告)日：2011-11-22
申请号：US12337885
申请日：2008-12-18
申请人： Yasumasa Sawai
发明人： Yasumasa Sawai
IPC分类号： G03B21/14 , G02B6/10 , F21V7/04
CPC分类号： G02B7/14 , G02B13/16 , G02B27/0955 , G02B27/0994 , G03B21/2053 , G03B21/208 , G03B27/72
摘要： A projection apparatus including an image display element for modulating illumination light, an illumination optical system for irradiating the illumination light onto the image display element, a projection optical system for projecting the modulated light by the image display element onto a projection surface, and an optical system changing section for changing the illumination optical system, wherein the illumination optical system includes a light source, a condensing optical system, a rod integrator and an illumination relay optical system wherein the projection optical system includes a projection variable-aperture diaphragm whose aperture diameter can be adjusted, and wherein the optical system changing section changes, when the aperture diameter of the projection variable-aperture diaphragm is made smaller, the illumination optical system such that an amount of light passing through the projection variable-aperture diaphragm with that aperture diameter increases.
摘要翻译：一种投影设备，包括用于调制照明光的图像显示元件，用于将照明光照射到图像显示元件上的照明光学系统，用于将图像显示元件调制的光投影到投影表面上的投影光学系统，以及光学用于改变照明光学系统的系统改变部分，其中照明光学系统包括光源，聚光光学系统，杆积分器和照明中继光学系统，其中投影光学系统包括投影可变孔径光阑，孔径可以并且其中，当所述投影可变孔径光阑的孔径较小时，所述光学系统改变部分变化，所述照明光学系统使得通过具有所述孔径的所述投影可变孔径光阑的光量增加。

4. 发明申请

US20070201235A1 Light-emitting module and image projection apparatus using same 有权
标题翻译：发光模块和使用其的图像投影装置
公开(公告)号：US20070201235A1
公开(公告)日：2007-08-30
申请号：US11706533
申请日：2007-02-15
申请人： Yasumasa Sawai , Kenji Konno
发明人： Yasumasa Sawai , Kenji Konno
IPC分类号： F21V7/00
CPC分类号： G03B21/2013 , G03B21/16 , G03B21/2033 , G03B21/2066 , G03B21/208 , G03B33/06
摘要： A light-emitting module has: a single reflector having a plurality of concave reflection surfaces; and light emitters in a same number as a number of the concave reflection surfaces. Each of the concave reflection surface has an outer shape partially notched at a boundary thereof with the adjacent concave reflection surface. Each of the light emitters emits light toward the concave reflection surface.
摘要翻译：发光模块具有：具有多个凹面反射面的单个反射体; 和与多个凹面反射面相同数量的发光体。每个凹面反射面都具有与其相邻的凹面反射面的边界部分凹口的外形。每个发光体向凹面反射面发光。

5. 发明授权

US06347014B1 Illumination optical system and projection-type image display apparatus 有权
标题翻译：照明光学系统和投影型图像显示装置
公开(公告)号：US06347014B1
公开(公告)日：2002-02-12
申请号：US09457284
申请日：1999-12-08
申请人： Kohtaro Hayashi , Yasumasa Sawai , Kenji Konno
发明人： Kohtaro Hayashi , Yasumasa Sawai , Kenji Konno
IPC分类号： G02B2714
CPC分类号： G02B27/283 , G03B21/2073
摘要： An illumination optical system has a light source that emits white light having random polarization planes, a polarization separation device that separates the light from the light source into two types of light having polarization planes perpendicular to each other and traveling in directions at an angle to each other, a wavelength-specific polarization conversion device that receives the two types of light thus separated and that then subjects the light of a particular wavelength range included in them to polarization conversion, a convergence optical system that receives the two types of light after the light of the particular wavelength range included therein has undergone polarization conversion and that then makes them converge on different convergence positions, and a half-wave plate disposed near one of those convergence positions. This illumination optical system outputs white light that has different polarization planes in a particular wavelength range and in other wavelength ranges, and thus, when the light is subjected to color separation by being separated into light of the particular wavelength range and light of other wavelength ranges, the difference of the polarization planes serves to prevent loss of the amount of light.
摘要翻译：照明光学系统具有发射具有随机偏振面的白光的光源，将来自光源的光分离成具有彼此垂直的偏振面并且以每个角度成一角度的方式行进的两种类型的光的偏振分离装置另一种是波长专用偏振转换装置，其接收这样分离的两种类型的光，然后使包含在其中的特定波长范围的光受到偏振转换;收敛光学系统，其在光之后接收两种类型的光其中包括的特定波长范围经历了极化转换，然后使它们收敛于不同的会聚位置，并且设置在那些会聚位置附近的半波片。该照明光学系统输出在特定波长范围内和其它波长范围内具有不同偏振面的白光，因此当通过将光分离成特定波长范围的光和其它波长范围的光进行分色时，偏振面的差异用于防止光量的损失。

6. 发明授权

US09010944B2 Projection type image display apparatus 有权
标题翻译：投影型图像显示装置
公开(公告)号：US09010944B2
公开(公告)日：2015-04-21
申请号：US12922657
申请日：2009-03-17
申请人： Norio Maeda , Kohei Wataru , Kazuhiko Inoue , Masahiro Terada , Takashi Ohta , Yasumasa Sawai
发明人： Norio Maeda , Kohei Wataru , Kazuhiko Inoue , Masahiro Terada , Takashi Ohta , Yasumasa Sawai
IPC分类号： G03B21/14 , G03B21/00 , H04N9/31
CPC分类号： G03B21/53 , G03B21/00 , G03B21/005 , H04N9/317
摘要： A projection type image display apparatus (1) comprises a focus correction system (30). The system includes a temperature detection mechanism (16) for measuring temperature in the vicinity of a projection lens group (13), a correction amount calculation unit (18) for calculating a correction amount for correcting the focus shift caused by a temperature change, and a driving signal generation unit (19) for generating, based on the correction amount, a driving signal for driving a focus adjustment mechanism (15). If the user performs a focus adjustment using a focus operation input unit (23), a focus operation determination unit (21) determines that a focus adjustment has occurred independently of the focus correction system and changes a correction condition stored in a memory (20).
摘要翻译：投影型图像显示装置（1）包括聚焦校正系统（30）。该系统包括用于测量投影透镜组（13）附近的温度的温度检测机构（16），用于计算用于校正由温度变化引起的聚焦偏移的校正量的校正量计算单元（18），以及驱动信号生成单元（19），用于基于校正量生成用于驱动聚焦调节机构（15）的驱动信号。如果用户使用聚焦操作输入单元（23）进行焦点调整，则聚焦操作确定单元（21）确定焦点调整发生独立于聚焦校正系统，并且改变存储在存储器（20）中的校正条件，。

7. 发明授权

US08998423B2 Image Projection apparatus 有权
标题翻译：图像投影仪
公开(公告)号：US08998423B2
公开(公告)日：2015-04-07
申请号：US13338133
申请日：2011-12-27
申请人： Yasumasa Sawai
发明人： Yasumasa Sawai
IPC分类号： G03B21/00 , G02B26/08 , G03B33/12 , H04N9/31 , G02B27/00 , G02B27/09
CPC分类号： G03B21/008 , G02B26/0833 , G02B27/0018 , G02B27/0927 , G02B27/0994 , G03B33/12 , H04N9/3152 , H04N9/3161
摘要： Assuming that a normal line of an image display surface of a DMD is a normal line Ax of the image display surface, that a direction in which a light beam specularly reflected by a mirror is outputted is a specular reflection direction R, and that an angle that the specular reflection direction R forms with respect to the normal line Ax of the image display surface is denoted by γ, an image projection apparatus satisfies the following conditional expression: β(2·k−1)≧2·γ−β(2·k)≧β(2·k+1), where β(2·k−1) and β(2·k+1) represent a diffraction angle of an odd-order diffracted light, and β(2·k) represents a diffraction angle of an even-order diffracted light.
摘要翻译：假设DMD的图像显示面的法线是图像显示面的法线Ax，输出镜面镜面反射的光束的方向是镜面反射方向R，并且角度相对于图像显示面的法线Ax形成的镜面反射方向R由γ表示，图像投影装置满足以下条件式：＆bgr;（2·k-1）≥2·γ＆bgr; （2·k + 1）表示奇数衍射光的衍射角，＆bgr（2·k-1）和（b）（2·k-1） ;（2·k）表示偶数衍射光的衍射角。

8. 发明授权

US08864315B2 Image projection apparatus 有权
标题翻译：图像投影仪
公开(公告)号：US08864315B2
公开(公告)日：2014-10-21
申请号：US13362960
申请日：2012-01-31
申请人： Yasumasa Sawai
发明人： Yasumasa Sawai
IPC分类号： G03B21/00 , G03B21/20 , G03B33/06
CPC分类号： G03B21/2013 , G03B21/2066 , G03B21/2073 , G03B33/06
摘要： An image projector has a light source emitting blue, green, and red illumination light, a digital micromirror device forming blue, green, and red images, and a projection system enlarging the images, and fulfills the formula FP≦1/(2·sin {sin−1[1/(2·FI)]+Δ}), where, when mirror surfaces forming pixels are referred to as pixel surfaces, mirror-reflected light on the pixel surface along the illumination axis is referred to as mirror-reflected light, and angles between, of the diffracted light produced as a result of the rays along the illumination axis being diffracted, the part traveling in a direction closest to the mirror-reflected light and the normal line to the image display surface is defined as diffraction angles βB, βG, and βR, then Δ represents the largest of the angles βB, βG, and βR, FI represents f-number of illumination light, and FP represents f-number of projection system.
摘要翻译：图像投影仪具有发出蓝色，绿色和红色照明光的光源，形成蓝色，绿色和红色图像的数字微镜装置和放大图像的投影系统，并且满足公式FP＆nlE; 1 /（2·sin {sin-1 [1 /（2·FI）] +＆Dgr;}），其中，当形成像素的镜面被称为像素表面时，沿着照明轴的像素表面上的镜像反射光被称为镜定义了由沿着照明轴的射线产生的衍射光被衍射的角度，将最靠近镜面反射光的方向行进的部分和与图像显示面的法线定义为作为衍射角＆bgr; B，＆bgr; G和＆bgr; R，然后＆Dgr; 代表角度＆Bgr中的最大值B，＆bgr; G和＆bgr; R，FI表示照明光的f数，FP表示投影系统的f数。

9. 发明授权

US08408709B2 Illumination optical system and projector 有权
标题翻译：照明光学系统和投影机
公开(公告)号：US08408709B2
公开(公告)日：2013-04-02
申请号：US12958645
申请日：2010-12-02
申请人： Yasumasa Sawai , Iwao Adachi
发明人： Yasumasa Sawai , Iwao Adachi
IPC分类号： G03B21/14
CPC分类号： G02B27/283 , G02B27/0905 , G02B27/0927 , G02B27/0994 , G03B21/20 , H04N9/3167
摘要： First and second light sources emit first and second light beams, respectively. A light condensing system condenses the beams, and a polarization separation system separates each of the beams into first and second polarization components. A ½ phase plate converts the polarization state of the first polarization component to one equal to that of the second polarization component, and a rod integrator uniformizes spatial energy distribution of the beams condensed by the light condensing system. A relay system forms an image of an exit face of the rod integrator on a region to be illuminated. The light condensing system condenses the first and second polarization components onto first and second regions, respectively, of an entrance face of the rod integrator; and the ½ phase plate is placed at the first region of the entrance face of the rod integrator or at a position conjugate with the first region.
摘要翻译：第一和第二光源分别发射第一和第二光束。聚光系统使光束会聚，并且偏振分离系统将每个光束分成第一和第二偏振分量。 1/2相位板将第一偏振分量的偏振状态转换成与第二偏振分量相同的偏振态，并且棒状积分器使由聚光系统聚集的光束的空间能量分布均匀。继电器系统在待照亮的区域上形成棒状积分器的出射面的图像。所述聚光系统将所述第一和第二偏振分量分别聚集到所述棒状积分器的入射面的第一和第二区域上; 并且1/2相位板被放置在杆积分器的入射面的第一区域处或与第一区域共轭的位置处。

10. 发明授权

US07530697B2 Illumination optics and image projecting apparatus having thereof 有权
标题翻译：具有照明光学元件及其投影装置
公开(公告)号：US07530697B2
公开(公告)日：2009-05-12
申请号：US11405730
申请日：2006-04-18
申请人： Yasumasa Sawai , Kazuhiko Inoue
发明人： Yasumasa Sawai , Kazuhiko Inoue
IPC分类号： G03B21/14
CPC分类号： G03B21/2013 , G03B21/208 , H04N5/74
摘要： An illumination optics includes a plurality of light source sections for emiting light beams and a time sharing color separation device having a plurality of color filters. The color filters are rotationally moved so as to cross optical paths of the emitted light beams from the light source sections, thereby separate the emitted light beams to enter there into different color light beams in a time-sharing state. The reference axes of the emitted light beams to enter the time sharing color separation device are separated from each other, and the color filters are formed so that border lines of the adjacent color filters cross the reference axes approximately simultaneously at the time of rotation.
摘要翻译：照明光学器件包括用于发射光束的多个光源部分和具有多个滤色器的分时分色装置。滤色器被旋转地移动以便与来自光源部分的发射光束的光路交叉，从而将发射的光束分离成在分时状态下进入不同的彩色光束。进入分时分色装置的发射光束的参考轴线彼此分离，并且形成滤色器，使得相邻滤色器的边界线在旋转时大致同时与参考轴线交叉。

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