公开(公告)号：US5861964A

公开(公告)日：1999-01-19

申请号：US453669

申请日：1995-05-30

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 ,  G02B26/08

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。

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

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

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。

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。

公开(公告)号：US5497170A

公开(公告)日：1996-03-05

申请号：US353304

申请日：1994-12-05

申请人： Masayuki Kato ,  Hirokazu Aritake ,  Tsuyoshi Matsumoto ,  Junji Tomita ,  Fumio Yamagishi ,  Masato Nakashima ,  Masao Suzuki ,  Toshiaki Fujiwara ,  Masaya Sugita ,  Koichi Takoa

发明人： Masayuki Kato ,  Hirokazu Aritake ,  Tsuyoshi Matsumoto ,  Junji Tomita ,  Fumio Yamagishi ,  Masato Nakashima ,  Masao Suzuki ,  Toshiaki Fujiwara ,  Masaya Sugita ,  Koichi Takoa

IPC分类号： G02B5/28 ,  G02B5/32 ,  G02B27/00 ,  G02B27/01 ,  G09G3/02

CPC分类号： G02B27/0103 ,  G02B5/32 ,  G02B2027/0107 ,  G02B2027/0109 ,  G02B2027/0118 ,  G02B2027/0145 ,  G02B2027/0194 ,  G02B5/28

摘要： A headup display apparatus consists of a projection optical system unit installed in the dashboard of a car and a reflection member on the windshield. The projection optical system unit contains an indicator and an off-axis reflective hologram which reflects display light of the indicator toward the windshield, which in turn reflects it toward the viewing point of a driver. As a result, the display is seen superimposed on the exterior view. When external light as from the sun enters the projection optical system unit traveling in a direction reverse to the path of the display light, the off-axis reflective hologram reflects the incident external light toward a direction different from that of the outgoing display light to minimize an abnormal illumination of the indicator surface which would otherwise render the display unrecognizable. Behind the hologram is installed a heat dissipating member that receives infrared rays that have transmitted the hologram in order to dissipate heat.

摘要翻译： 头枕显示装置由安装在轿厢的仪表板上的投影光学系统单元和挡风玻璃上的反射构件组成。 投影光学系统单元包含指示器和离轴反射全息图，该反射全息图将指示器的显示光反射到挡风玻璃，其反过来朝向驾驶员的观察点反射。 结果，显示器被叠加在外部视图上。 当来自太阳的外部光入射到与显示光的路径相反的方向行进的投影光学系统单元时，离轴反射全息图朝向与出射显示光的方向不同的方向反射入射的外部光，以最小化 指示器表面的异常照明，否则会使显示器无法识别。 在全息图之后安装有散热构件，其接收已经透射全息图以散发热量的红外线。

公开(公告)号：US5982402A

公开(公告)日：1999-11-09

申请号：US863686

申请日：1997-05-27

申请人： Hiroyasu Yoshikawa ,  Shin-ya Hasegawa ,  Masato Nakashima ,  Fumio Yamagishi

发明人： Hiroyasu Yoshikawa ,  Shin-ya Hasegawa ,  Masato Nakashima ,  Fumio Yamagishi

IPC分类号： G03G15/01 ,  B41J2/465 ,  B41J2/47 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/50 ,  B41J2/385

CPC分类号： B41J2/465 ,  B41J2/471 ,  H04N1/047 ,  H04N1/504 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04789 ,  H04N2201/04791

摘要： A tandem type color printer, having optical beam scanning units and corresponding photosensitive drums, which detects a positional shift of a scanning locus occurring on a corresponding one of the plurality of photosensitive drums, and automatically corrects the detected positional shift of the scanning locus. A detecting window, in which a beam transmission time varies with a change in the beam scanning position, is provided at each of the start end side and the terminal end side of each of a plurality of beam scanning loci in a mask plate. The mask plate is arranged between the optical beam scanning units and the photosensitive drums, to provide output of a detection signal corresponding to the incident time of the transmission beam resulting from beam scanning by a light source, and thus determines and corrects the direction and the amount of positional shift of the scanning locus.

摘要翻译： 一种具有光束扫描单元和相应的感光鼓的串联型彩色打印机，其检测在多个感光鼓中的相应一个感光鼓上发生的扫描轨迹的位置偏移，并且自动校正检测到的扫描轨迹的位置偏移。 在掩模板中的多个光束扫描轨迹中的每一个的起始端侧和终端侧的每个处设置有检测窗，其中光束透射时间随着光束扫描位置的变化而变化。 掩模板布置在光束扫描单元和感光鼓之间，以提供对应于由光源的光束扫描产生的发射光束的入射时间的检测信号的输出，从而确定和校正方向和 扫描轨迹的位置偏移量。

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。

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。

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。