公开(公告)号：US07492495B2

公开(公告)日：2009-02-17

申请号：US11625354

申请日：2007-01-22

申请人： Keiichiro Ishihara ,  Shigehiro Kadota

发明人： Keiichiro Ishihara ,  Shigehiro Kadota

IPC分类号： G02B26/08

CPC分类号： G02B26/101 ,  G02B26/085 ,  G02B27/0031 ,  G09G3/02 ,  H04N9/3129

摘要： An optical scanning apparatus in which keystone distortion non-linearity distortion in a projected image can be excellently corrected is provided. An optical scanning apparatus has light source means and deflecting means for deflecting a light beam emitted from the light source means two-dimensionally in a first direction and a second directrion, the deflection speed of the deflecting means being higher in the first direction than in the second direction. The deflecting means is driven in such a way that its angular velocity in the second direction is smaller when optically scanning a position on the surface to be scanned at which the angle of incidence of the deflected light beam in the second direction is larger than when optically scanning a position on said surface to be scanned at which the angle of incidence of the deflected light beam in said second direction is small.

摘要翻译： 提供了一种光学扫描装置，其中可以良好地校正投影图像中的梯形失真非线性失真。 光学扫描装置具有光源装置和偏转装置，用于在第一方向和第二方向上二维地偏转从光源装置发射的光束，偏转装置的偏转速度在第一方向上比在 第二个方向 以这样的方式驱动偏转装置，使得当光学扫描被扫描表面上的位置时，第二方向上的角速度较小，在该位置处偏转光束在第二方向上的入射角大于光学 扫描所述被扫描的所述表面上的所述第二方向上偏转的光束的入射角小的位置。

公开(公告)号：US07484340B2

公开(公告)日：2009-02-03

申请号：US11192872

申请日：2005-07-28

申请人： Keiichiro Ishihara ,  Ryuichi Sakaguchi ,  Shuichi Kobayashi

发明人： Keiichiro Ishihara ,  Ryuichi Sakaguchi ,  Shuichi Kobayashi

IPC分类号： G03B21/14

CPC分类号： H04N9/3129 ,  H04N5/7458

摘要： A compact displaying optical system capable of reducing a speckle noise and a loss of light amount is disclosed. The displaying optical system comprises a light source which emits coherent light, and a polarization control element which has a first area and a second area where light components of the light enter, respectively. The polarization control element makes the polarization state of the light component entering the first area different from that of the light component entering the second area.

摘要翻译： 公开了一种能够减少斑点噪声和光量损失的紧凑型显示光学系统。 显示光学系统包括发射相干光的光源，以及分别具有第一区域和第二区域的偏光控制元件，其中光分量进入。 偏振控制元件使得进入第一区域的光分量的偏振状态不同于进入第二区域的光分量的偏振状态。

公开(公告)号：US07256917B2

公开(公告)日：2007-08-14

申请号：US10991376

申请日：2004-11-19

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G02B26/08

CPC分类号： G02B26/101

摘要： A two-dimensional scanning apparatus has light source means, deflecting means for deflecting a beam emitted from the light source means in a two-dimensional direction, and scanning optical means for directing the beam deflected by the deflecting means onto a surface to be scanned. The scanning optical means has one or more scanning optical element, and one or more surfaces of one or more of the aforementioned one or more scanning optical elements are anamorphic surfaces, and the anamorphic surfaces on the aforementioned one or more surfaces are anamorphic surfaces monotonously changing in a radius of curvature of which the absolute value of the radius of curvature in a first one-dimensional direction continuously decreases from one side toward the other side along a second one-dimensional direction orthogonal to the first one-dimensional direction. Thus, there can be supplied a two-dimensional scanning apparatus which can well correct TV distortion caused by the two-dimensional deflection of the beam by the deflecting means and trapezoid distortion caused by an image being obliquely projected onto a surface to be scanned, and a scanning type image displaying apparatus using the same.

摘要翻译： 二维扫描装置具有光源装置，用于使从二维方向偏离光源装置的光束的偏转装置和用于将由偏转装置偏转的光束引导到待扫描的表面上的扫描光学装置。 扫描光学装置具有一个或多个扫描光学元件，并且上述一个或多个扫描光学元件中的一个或多个的一个或多个表面是变形表面，并且上述一个或多个表面上的变形表面是变形表面单调变化 在第一一维方向上的曲率半径的绝对值沿着与第一一维方向正交的第二一维方向从一侧向另一侧连续减小的曲率半径。 因此，可以提供二维扫描装置，其可以很好地校正由偏转装置引起的光束的二维偏转引起的电视失真和由倾斜投影到待扫描的表面上的图像引起的梯形失真，以及 使用该扫描型图像显示装置的扫描型图像显示装置。

公开(公告)号：US07248279B2

公开(公告)日：2007-07-24

申请号：US11248255

申请日：2005-10-13

申请人： Keiichiro Ishihara ,  Hiroshi Sato ,  Manabu Kato ,  Hidekazu Shimomura

发明人： Keiichiro Ishihara ,  Hiroshi Sato ,  Manabu Kato ,  Hidekazu Shimomura

IPC分类号： G02B26/08 ,  G02B26/12 ,  B41J2/44

CPC分类号： G02B26/125 ,  G02B26/123 ,  G02B26/124

摘要： Disclosed is an optical scanning device which includes a light source device, a deflecting system for deflecting a light beam emitted from the light source device, and a scanning optical system for scanning a surface to be scanned, with the light beam deflected by the deflecting system, wherein the scanning optical system includes a scanning optical element disposed so that, with respect to a sub-scan direction, a principal ray of the deflected light beam passes a portion other than an optical axis, wherein the scanning optical element has a sagittal aspherical amount changing surface in which an aspherical amount of a sagittal changes along a main scan direction of the scanning optical element, and wherein, throughout the whole surface to be scanned, the position in the sub-scan direction upon which the deflected light beam impinges is made even.

摘要翻译： 公开了一种光学扫描装置，其包括光源装置，用于偏转从光源装置发射的光束的偏转系统和用于扫描待扫描表面的扫描光学系统，由偏转系统偏转的光束 其特征在于，所述扫描光学系统包括扫描光学元件，所述扫描光学元件相对于副扫描方向，所述偏转光束的主光线通过除了所述光轴以外的部分，其中所述扫描光学元件具有矢状非球面 其中矢量的非球面量沿着扫描光学元件的主扫描方向改变的量变化表面，并且其中在整个扫描的整个表面上，偏转的光束撞击的副扫描方向上的位置是 甚至连

公开(公告)号：US20070040842A1

公开(公告)日：2007-02-22

申请号：US11453091

申请日：2006-06-15

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G09G5/36

CPC分类号： G09G5/39 ,  G09G2340/02

摘要： A method is provided for use in a buffer memory system having at least one buffer memory to process image data of an image frame. The method may include writing a first plurality of lines of the image data to the buffer memory in a first writing sequence; reading the first plurality of lines of the image data from the buffer memory in a first reading sequence; and writing a second plurality of lines of the image data, before completing the reading of the first plurality of lines, to the buffer memory in a second writing sequence different from the first writing sequence.

摘要翻译： 提供了一种用于具有至少一个缓冲存储器来处理图像帧的图像数据的缓冲存储器系统中的方法。 该方法可以包括以第一写入顺序将图像数据的第一多行写入缓冲存储器; 以第一读取顺序从缓冲存储器读取图像数据的第一组多行; 以及在完成所述第一多行的读取之前，以与所述第一写入序列不同的第二写入顺序将所述图像数据的第二多行写入所述缓冲存储器。

公开(公告)号：US20060139718A1

公开(公告)日：2006-06-29

申请号：US11317919

申请日：2005-12-22

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G02B26/08

CPC分类号： H04N9/3129 ,  G02B26/101

摘要： An optical scanning device is disclosed, which comprises a light source unit, a scanning unit for scanning a scanning surface with a light from the light source unit in a first direction and a second direction orthogonal to the first direction, and an optical unit for guiding the scanning light onto the scanning surface. The scanning unit has a deflection surface which sine-wave-drives in the first direction. The optical unit has an optical surface whose arbitrary cross section in the first direction has a shape where a second order derivative of the function representing a shape of the cross section changes so as to diverge a light stronger as toward the periphery from the center. And the optical surface is configured by arranging the shape of each cross section in the first direction in the second direction.

摘要翻译： 公开了一种光学扫描装置，其包括光源单元，用于沿着与第一方向正交的第一方向和第二方向的来自光源单元的光扫描扫描表面的扫描单元和用于引导 扫描光到扫描面上。 扫描单元具有沿第一方向正弦波驱动的偏转表面。 光学单元具有光学表面，其第一方向上的任意横截面具有表示横截面形状的函数的二阶导数变化从而使从中心朝向周边发散更强的光的形状。 并且通过在第二方向上沿第一方向布置每个横截面的形状来配置光学表面。

公开(公告)号：US07034859B2

公开(公告)日：2006-04-25

申请号：US10633521

申请日：2003-08-05

申请人： Keiichiro Ishihara ,  Hiroshi Sato ,  Manabu Kato ,  Hidekazu Shimomura

发明人： Keiichiro Ishihara ,  Hiroshi Sato ,  Manabu Kato ,  Hidekazu Shimomura

IPC分类号： G02B26/10 ,  B41J2/47

CPC分类号： G02B26/125 ,  G02B26/123 ,  G02B26/124

摘要： Disclosed is an optical scanning device which includes a light source device, a deflecting system for deflecting a light beam emitted from the light source device, and a scanning optical system for scanning a surface to be scanned, with the light beam deflected by the deflecting system, wherein the scanning optical system includes a scanning optical element disposed so that, with respect to a sub-scan direction, a principal ray of the deflected light beam passes a portion other than an optical axis, wherein the scanning optical element has a sagittal aspherical amount changing surface in which an aspherical amount of a sagittal changes along a main scan direction of the scanning optical element, and wherein, throughout the whole surface to be scanned, the position in the sub-scan direction upon which the deflected light beam impinges is made even.

公开(公告)号：US20060033009A1

公开(公告)日：2006-02-16

申请号：US11204487

申请日：2005-08-15

申请人： Shuichi Kobayashi ,  Keiichiro Ishihara ,  Ryuichi Sakaguchi

发明人： Shuichi Kobayashi ,  Keiichiro Ishihara ,  Ryuichi Sakaguchi

IPC分类号： H01L27/00

CPC分类号： H04N9/3129 ,  G02B27/48

摘要： A displaying optical system is disclosed, which is capable of reducing a speckle noise. The displaying optical system comprises a light source emitting coherent light, a scanning device scanning the light, a first optical system causing the light from the scanning device to form an intermediate image, a second optical system causing the light from the intermediate image to form an image on a real display surface, and an optical element arranged between the first and second optical systems. The optical element widens the divergence angle of the light emerged from the optical element toward the second optical system more than the incident angle of the light on the optical element from the first optical system.

公开(公告)号：US20050206988A1

公开(公告)日：2005-09-22

申请号：US11133396

申请日：2005-05-20

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： B41J2/44 ,  G02B13/18 ,  G02B26/08 ,  G02B26/10 ,  G02B26/12 ,  H04N1/036 ,  H04N1/113

CPC分类号： B41J2/473 ,  G02B13/0005 ,  G02B26/12 ,  G02B26/125

摘要： An optical scanning apparatus includes an incidence optical system for causing a beam emitted from a light source to be incident on a deflector, and a scanning optical system for causing the beam reflected and deflected by the deflector to be imaged on a surface to be scanned. The scanning optical system has a first lens on the deflector side and a second lens on the surface to be scanned side. The first lens has positive power in the main scanning direction and has negative power in the sub scanning direction. The power of the first lens in the main scanning direction is greater than the power of the second lens in the main scanning direction, and the second lens has positive power in the sub scanning direction.

公开(公告)号：US06943927B1

公开(公告)日：2005-09-13

申请号：US09696000

申请日：2000-10-26

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： B41J2/44 ,  G02B13/00 ,  G02B13/18 ,  G02B26/10 ,  G02B26/12 ,  H04N1/113 ,  G02B26/08

CPC分类号： B41J2/473 ,  G02B26/123 ,  G02B26/125 ,  H04N1/1135

摘要： Provided are compact, high-definition, optical scanning apparatus and multi-beam scanning apparatus capable of keeping the spot size uniform in the sub-scanning direction throughout the entire, effective scanning area on a surface to be scanned. An optical scanning apparatus has an entrance optical system 11 for guiding light emitted from a light source 1, to a deflector 5, and a scanning optical system 6 for focusing the light reflectively deflected by the deflector, on a surface to be scanned 7. In the optical scanning apparatus, the scanning optical system has a plurality of sagittal asymmetric change surfaces in which curvatures in the sagittal direction change on an asymmetric basis in the meridional direction with respect to the optical axis of the scanning optical system.

摘要翻译： 本发明提供了紧凑，高分辨率的光学扫描装置和多光束扫描装置，其能够在待扫描的表面上的整个有效扫描区域中保持副扫描方向的光斑尺寸一致。 光学扫描装置具有入射光学系统11，用于将从光源1发射的光引导到偏转器5;以及扫描光学系统6，用于将由偏转器反射偏转的光聚焦在待扫描表面7上。 在光扫描装置中，扫描光学系统具有多个矢状不对称变化面，其中矢状方向的曲率相对于扫描光学系统的光轴沿子午方向在不对称基础上变化。