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1. 发明授权

US4904033A Method for constructing holograms 失效
标题翻译：构造全息图的方法
公开(公告)号：US4904033A
公开(公告)日：1990-02-27
申请号：US196754
申请日：1988-05-18
申请人： Hiroyuki Ikeda , Fumio Yamagishi , Shinya Hasegawa , Syunji Kitagawa , Kozo Yamazaki , Takefumi Inagaki
发明人： Hiroyuki Ikeda , Fumio Yamagishi , Shinya Hasegawa , Syunji Kitagawa , Kozo Yamazaki , Takefumi Inagaki
IPC分类号： G03H1/04 , G03H1/20
CPC分类号： G03H1/0248 , G03H1/202 , G03H1/0005 , G03H1/265 , G03H2001/205 , G03H2001/2615 , G03H2222/36 , G03H2250/12 , Y10S359/90
摘要： A method for constructing a hologram by use of a master hologram which includes a predetermined pattern of interference fringes formed thereon by optical interference of a plurality of constructing coherent light beams incident at different angles. The method includes preparing a photosensitive medium, in which the hologram is to be formed, on the master hologram, and copying the master hologram onto the photo-sensitive medium by impinging copying light beams onto the master hologram at an incident angle different from the angles of the constructing beams.
摘要翻译：一种通过使用主全息图构成全息图的方法，该主全息图包括通过以不同角度入射的多个构成相干光束的光学干涉在其上形成的干涉条纹的预定图案。该方法包括在主全息图上制备其中要形成全息图的光敏介质，并通过以不同于角度的入射角照射到主全息图上来将主全息图复制到光敏介质上的构造梁。

2. 发明授权

US4810046A Light beam scanning apparatus 失效
标题翻译：光束扫描装置
公开(公告)号：US4810046A
公开(公告)日：1989-03-07
申请号：US120727
申请日：1987-11-16
申请人： Fumio Yamagishi , Shinya Hasegawa , Hiroyuki Ikeda , Takefumi Inagaki
发明人： Fumio Yamagishi , Shinya Hasegawa , Hiroyuki Ikeda , Takefumi Inagaki
IPC分类号： G02B26/10 , G06K15/12 , H04N1/113
CPC分类号： G06K15/1285 , G02B26/106
摘要： In a light beam scanning apparatus using a hologram rotator, a post-hologram is provided for further diffracting a light beam diffracted by the hologram rotator to a direction opposite to that of the direction in which the light beam is diffracted by the hologram rotator. By combining the kinds of wave fronts used for forming the holograms of the holograms rotator and the post-hologram, the light beam scanning apparatus reduces the deviation of the light beam scanning position caused by the mode hopping of a laser diode, and an improved linear scanning of the light beam and/or image focusing characteristic is obtained.
摘要翻译：在使用全息图旋转器的光束扫描装置中，提供后全息图，用于进一步将由全息图旋转器衍射的光束衍射到与通过全息图旋转器衍射光束的方向相反的方向。通过组合用于形成全息图旋转器的全息图和后全息图的波前的种类，光束扫描装置减少了由激光二极管的模式跳变引起的光束扫描位置的偏差，并且改善的线性获得光束的扫描和/或图像聚焦特性。

3. 发明授权

US4925262A Method and apparatus for light beam scanning using a hologram 失效
标题翻译：使用全息图进行光束扫描的方法和装置
公开(公告)号：US4925262A
公开(公告)日：1990-05-15
申请号：US273624
申请日：1988-11-17
申请人： Fumio Yamagishi , Shinya Hasegawa , Hiroyuki Ikeda
发明人： Fumio Yamagishi , Shinya Hasegawa , Hiroyuki Ikeda
IPC分类号： G06K7/12 , G02B5/32 , G02B26/10 , G06K15/12 , H04N1/113
CPC分类号： G06K15/1285 , G02B26/106
摘要： A method for constructing a hologram on a transparent disk which includes two steps. First, irradiating a reference wave light beam having a diverging spherical wave front from a first point light source located at a predetermined distance on a center axis of the transparent disk. Second, irradiating an object wave light beam having a diverging spherical wave front from a second point light source located at a predetermined distance on a normal line away from a predetermined distance from the center axis. The result is interference between the reference wave light beam irradiated by the first point light source and the object wave light beam irradiated by the second point light source on the transparent disk and the formation of interference fringes having an extreme value of a spatial frequency as a hologram in one embodiment, a reconstruction beam is irradiated to the position, or in the vicinity of the extreme value.
摘要翻译：一种在透明盘上构造全息图的方法，包括两个步骤。首先，从位于透明盘的中心轴上的预定距离的第一点光源照射具有发散的球面波前的参考波光束。其次，从距离中心轴规定距离的法线上距预定距离的第二点光源照射具有发散球面波的物波光束。结果是由第一点光源照射的参考波光束与由透明盘上的第二点光源照射的物体光束之间的干涉，以及具有空间频率的极值的干涉条纹的形成为在一个实施例中，全息图将重建光束照射到极值的位置或附近。

4. 发明授权

US6124955A Light beam scanning apparatus 失效
标题翻译：光束扫描装置
公开(公告)号：US6124955A
公开(公告)日：2000-09-26
申请号：US838935
申请日：1997-04-23
申请人： Shinya Hasegawa , Fumio Yamagishi , Masato Nakashima
发明人： Shinya Hasegawa , Fumio Yamagishi , Masato Nakashima
IPC分类号： G02B5/32 , G02B26/10 , G03H1/12 , G02B5/18
CPC分类号： G02B5/32 , G02B26/106 , G03H1/0005
摘要： A light-beam scanning apparatus includes at least two holograms with an optical path length difference .DELTA..PHI. along a scanning beam light flux. The path length is measured from a light source to a scanning surface in the first hologram, and is represented by .DELTA..PHI.
摘要翻译：光束扫描装置包括沿扫描光束光通量的至少两个具有光程长度差DELTA PHI的全息图。路径长度从第一全息图中的光源到扫描面测量，并由DELTA PHI

5. 发明授权

US5940195A Light beam scanning apparatus 失效
标题翻译：光束扫描装置
公开(公告)号：US5940195A
公开(公告)日：1999-08-17
申请号：US847317
申请日：1997-04-23
申请人： Shinya Hasegawa , Fumio Yamagishi , Masato Nakashima
发明人： Shinya Hasegawa , Fumio Yamagishi , Masato Nakashima
IPC分类号： G02B5/32 , G02B26/10 , G03H1/12
CPC分类号： G02B5/32 , G02B26/106 , G03H1/0005
摘要： A high-resolution light-beam scanning apparatus utilizing only mass-producible holograms instead of utilizing auxiliary optical systems such as optical lenses or a mirror having curvature, and capable of compensating for disadvantages including scanning beam thickening and variation, failure of a rotatable hologram to rotate at a constant velocity, displacement of a scanning beam position in the scanning direction and the cross scanning direction due to a mode hop of a wavelength of a semiconductor laser, and deviation of a base of rotatable hologram from a parallel state. These disadvantages are detrimental to efforts for increasing the resolution of a hologram scanner and lowering the cost thereof. The light beam scanning apparatus includes at least two holograms with an optical path length difference .DELTA..PHI. along a scanning beam light flux. The path length is measured from a light source to a scanning surface in the first hologram, and is represented by .DELTA..PHI.
摘要翻译：仅利用大规模生产的全息图的高分辨率光束扫描装置，而不是利用诸如光学透镜或具有曲率的反射镜等辅助光学系统，并且能够补偿包括扫描光束增厚和变化的缺点，可旋转全息图的故障以恒定速度旋转，由于半导体激光器的波长的模式跳跃而导致的扫描光束位置在扫描方向和横扫描方向上的位移以及可旋转全息图的基底与平行状态的偏离。这些缺点对于增加全息扫描仪的分辨率并降低其成本的努力是有害的。光束扫描装置沿扫描光束光束包括至少两个具有光程长度差DELTA PHI的全息图。路径长度从第一全息图中的光源到扫描面测量，并由DELTA PHI

6. 发明授权

US5295004A Optical beam scanning apparatus 失效
标题翻译：光束扫描装置
公开(公告)号：US5295004A
公开(公告)日：1994-03-15
申请号：US972520
申请日：1992-11-06
申请人： Shinya Hasegawa , Fumio Yamagishi , Youji Houki , Shigetake Iwata , Shigeo Kayashima , Satoshi Maeda
发明人： Shinya Hasegawa , Fumio Yamagishi , Youji Houki , Shigetake Iwata , Shigeo Kayashima , Satoshi Maeda
IPC分类号： G02B5/32 , G02B26/10
CPC分类号： G02B5/32 , G02B26/106
摘要： An optical beam scanning apparatus includes one rotatable hologram which is rotatable about an axis, and at least two laser beam sources which emit laser beams. The rotatable hologram is provided with at least two hologram areas whose number corresponds to the number of the laser beam sources, so that the laser beams emitted from the respective laser beam sources are made incident upon the respective hologram areas. Each of the hologram areas is provided with a plurality of hologram facets which are concentrically arranged with respect to the axis of rotation of the rotatable hologram to emit laser beams of the same F number. The hologram areas having different numbers of hologram facets having different F numbers.
摘要翻译：光束扫描装置包括可围绕轴线旋转的一个可旋转的全息图以及发射激光束的至少两个激光束源。可旋转全息图设置有至少两个全息区域，其数量对应于激光束源的数量，使得从各个激光束源发射的激光束入射到各个全息图区域。每个全息图区域设置有多个全息面，其相对于可旋转全息图的旋转轴线同心布置以发射相同F数的激光束。全息图区域具有不同数量的具有不同F数的全息图面。

7. 发明授权

US5978111A Light beam scanning apparatus 失效
标题翻译：光束扫描装置
公开(公告)号：US5978111A
公开(公告)日：1999-11-02
申请号：US453668
申请日：1995-05-30
申请人： Shinya Hasegawa , Shigeo Kayashima , Satoshi Maeda , Fumio Yamagishi , Hirokazu Aritake
发明人： Shinya Hasegawa , Shigeo Kayashima , Satoshi Maeda , Fumio Yamagishi , Hirokazu Aritake
IPC分类号： G02B5/32 , G02B26/10 , G03H1/12 , G02B5/18
CPC分类号： G02B5/32 , G02B26/106 , G03H1/0005
摘要： A high-resolution light-beam scanning apparatus utilizing only mass-producible holograms instead of utilizing auxiliary optical systems, and capable of compensating for disadvantages. The light-beam scanning apparatus including diffraction gratings for minimizing either: a sum total of values obtained by weighting a square of an optical path length difference between an optical path of a light flux measured along a principal axis of a light beam incident on and diffracted by a first diffraction grating of a rotatable hologram, and incident on and diffracted by a second diffraction grating of a fixed plate to conduct a scanning and converging on a scanning point on an image formation surface, and an optical path of a light flux measured along a marginal ray distanced from the principal axis or an absolute value of the optical path difference thereof; or a sum total of values obtained by weighting a square of a sum obtained by adding an amount of displacement of a light-beam convergent on a scanning point on the image formation surface, to an amount of displacement of the same light. The displacement measured with respect to the principal axis of a phase recorded on the diffraction grating when the light flux is incident on the fixed plate or by weighting an absolute value of the sum. The weighting is conducted at every scanning position of an image formation surface.
摘要翻译：高分辨率的光束扫描装置仅利用大量生产的全息图而不是利用辅助光学系统，并且能够补偿缺点。所述光束扫描装置包括用于最小化以下的衍射光栅：通过对沿着入射和衍射的光束的主轴测量的光通量的光路之间的光程长度差的平方加权而获得的值的总和通过可旋转全息图的第一衍射光栅，入射并由固定板的第二衍射光栅衍射，以对扫描点进行扫描和会聚，并且沿着图像形成表面测量的光通量的光路与主轴相距的边缘光线或其光程差的绝对值; 或通过将在图像形成表面上的扫描点上收敛的光束的位移量相加而获得的和的平方加权到相同光的位移量而获得的值的总和。当光束入射到固定板上时，相对于记录在衍射光栅上的相位的主轴测量的位移或通过加权的绝对值。加权在图像形成表面的每个扫描位置进行。

8. 发明授权

US5861989A Light beam scanning apparatus 失效
标题翻译：光束扫描装置
公开(公告)号：US5861989A
公开(公告)日：1999-01-19
申请号：US838934
申请日：1997-04-25
申请人： Shinya Hasegawa , Shigeo Kayashima , Satoshi Maeda , Shigetake Iwata , Fumio Yamagishi , Masato Nakashima , Hirokazu Aritake , Mamoru Hokari
发明人： Shinya Hasegawa , Shigeo Kayashima , Satoshi Maeda , Shigetake Iwata , Fumio Yamagishi , Masato Nakashima , Hirokazu Aritake , Mamoru Hokari
IPC分类号： G02B5/32 , G02B26/10 , G03H1/12 , G02B5/18
CPC分类号： G02B5/32 , G02B26/106 , G03H1/0005
摘要： A high-resolution light-beam scanning apparatus including a rotatable hologram and a fixed plate which are diffraction gratings for minimizing either a sum total of values obtained by weighting (1): a square of an optical path length difference between a) an optical path of a light flux measured along a principal axis of a light beam incident on and diffracted by a first diffraction grating of the rotatable hologram, and incident on and diffracted by a second diffraction grating of the fixed plate so as to conduct a scanning and converging on an image formation surface scanning point, and b) an optical path of a light flux measured along a marginal ray distanced from the principal axis, or an absolute value of the optical path difference thereof; or (2) a square of a sum obtained by adding an amount of displacement of a light beam convergent on the scanning point, which displacement is measured along the marginal ray distanced from the principal axis of an incident reconstructing light flux with respect to the principal axis of a phase of the first diffraction grating, to an amount of displacement of the same light, which displacement is measured with respect to the principal axis of a phase recorded on the second diffraction grating, when the light flux is incident on the fixed plate, or by weighting an absolute value of the sum, each weighting being conducted at every scanning position covering an entire range of the image formation surface.
摘要翻译：一种高分辨率光束扫描装置，包括可旋转的全息图和固定板，它们是衍射光栅，用于最小化通过加权（1）得到的值的总和：光路之间的光程长度差的平方沿着可旋转全息图的第一衍射光栅入射并衍射的光束的主轴测量的光通量，并入射并由固定板的第二衍射光栅衍射，以便进行扫描和会聚图像形成表面扫描点，以及b）沿着与主轴相距的边缘光线测量的光通量的光路或其光程差的绝对值; 或者（2）通过将会聚在该扫描点上的光束的位移量相加而得到的和的平方，该位移是沿着相对于主体的入射重建光通量的主轴远离的边缘光线被测量的第一衍射光栅的相位的轴相对于相对于记录在第二衍射光栅上的相位的主轴测量的相同光的位移量，当光束入射到固定板或者通过加权和的绝对值，每个加权在覆盖图像形成表面的整个范围的每个扫描位置进行。

9. 发明授权

US5680253A Light beam scanning apparatus comprising a first and second diffraction grating plate 失效
$Light beam scanning apparatus comprising a first and second diffraction grating plate$
标题翻译：光束扫描装置，包括第一和第二衍射光栅板
公开(公告)号：US5680253A
公开(公告)日：1997-10-21
申请号：US949520
申请日：1992-11-25
申请人： Shinya Hasegawa , Shigeo Kayashima , Satoshi Maeda , Shigetake Iwata , Fumio Yamagishi , Masato Nakashima , Hirokazu Aritake , Mamoru Hokari
发明人： Shinya Hasegawa , Shigeo Kayashima , Satoshi Maeda , Shigetake Iwata , Fumio Yamagishi , Masato Nakashima , Hirokazu Aritake , Mamoru Hokari
IPC分类号： G02B5/32 , G02B26/10 , G03H1/12 , G02B5/18
CPC分类号： G02B5/32 , G02B26/106 , G03H1/0005
摘要： A high-resolution light-beam scanning apparatus utilizing only mass-producible holograms instead of utilizing auxiliary optical systems, and capable of compensating for disadvantages. The light-beam scanning apparatus including diffraction gratings for minimizing either: a sum total of values obtained by weighting a square of an optical path length difference between an optical path of a light flux measured along a principle axis of a light beam incident on and diffracted by a first diffraction grating of a rotatable hologram, and incident on and diffracted by a second diffraction grating of a fixed plate to conduct a scanning and converging on a scanning point on an image formation surface, and an optical path of a light flux measured along a marginal ray distanced from the principal axis or an absolute value of the optical path difference thereof; or a sum total of values obtained by weighting a square of a sum obtained by adding an amount of displacement of a light-beam convergent on a scanning point on the image formation surface, to an amount of displacement of the same light. The displacement measured with respect to the principal axis of a phase recorded on the diffraction grating when the light flux is incident on the fixed plate or by weighting an absolute value of the sum. The weighting is conducted at every scanning position of an image formation surface.
摘要翻译：高分辨率的光束扫描装置仅利用大量生产的全息图而不是利用辅助光学系统，并且能够补偿缺点。该光束扫描装置包括用于最小化以下的衍射光栅：通过对沿着入射和衍射的光束的主轴测量的光通量的光路之间的光程长度差的平方加权获得的值的总和通过可旋转全息图的第一衍射光栅，入射并由固定板的第二衍射光栅衍射，以对扫描点进行扫描和会聚，并且沿着图像形成表面测量的光通量的光路与主轴相距的边缘光线或其光程差的绝对值; 或通过将在图像形成表面上的扫描点上收敛的光束的位移量相加而获得的和的平方加权到相同光的位移量而获得的值的总和。当光束入射到固定板上时，相对于记录在衍射光栅上的相位的主轴测量的位移或通过加权的绝对值。加权在图像形成表面的每个扫描位置进行。

10. 发明授权

US5900955A Optical scanning system including two hologram elements 失效
标题翻译：光学扫描系统包括两个全息元件
公开(公告)号：US5900955A
公开(公告)日：1999-05-04
申请号：US861639
申请日：1997-05-22
申请人： Hiroyasu Yoshikawa , Shinya Hasegawa , Satoshi Maeda , Shigeo Kayashima , Fumio Yamagishi
发明人： Hiroyasu Yoshikawa , Shinya Hasegawa , Satoshi Maeda , Shigeo Kayashima , Fumio Yamagishi
IPC分类号： G02B5/32 , G02B5/18 , G02B26/10 , G02B26/12
CPC分类号： G02B5/1876 , G02B26/12
摘要： An optical scanning system includes a laser source, a deflector deflecting a laser beam emitted from the laser source, and at least two hologram elements located between the deflector and an image forming member.
摘要翻译：光学扫描系统包括激光源，偏转从激光源发射的激光束的偏转器和位于偏转器和图像形成部件之间的至少两个全息元件。

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