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    • 81. 发明申请
    • Information recording apparatus
    • 信息记录装置
    • US20080002281A1
    • 2008-01-03
    • US11598711
    • 2006-11-14
    • Shinya Hasegawa
    • Shinya Hasegawa
    • G11B5/596
    • G11B5/54G11B5/09G11B7/08576G11B7/122G11B7/1362G11B7/13922G11B11/10536G11B11/10554G11B11/10558G11B11/10569G11B11/1058G11B11/10595G11B21/22G11B2005/0021
    • An information recording apparatus comprises a recording medium, a swing arm driven by an actuation unit, the swing arm swinging over a surface of the recording medium in response to driving by the actuation unit, a recording head carried by the swing arm and scanning over the surface of said recording medium with a swinging motion of the swing arm by the actuation unit, the recording head recording information to the recording medium, a head retracting mechanism retracting the recording head out of the recording medium in an unload state where no recording is to be made on the recording medium, an optical injection unit injecting a light into the recording head, the recording head including an optical irradiation part irradiating the light injected to the recording head upon the recording medium when recording information to the recording medium, wherein the optical injection unit is integrated with the head retracting mechanism to form a unitary optical-injection and head-retraction mechanism.
    • 信息记录装置包括记录介质,由致动单元驱动的摆臂,响应于由致动单元的驱动而在记录介质的表面上摆动的摆臂,由摆臂承载的记录头, 所述记录介质的表面通过所述致动单元的摆动臂的摆动运动,所述记录头将信息记录到所述记录介质上,磁头缩回机构将记录头从记录介质中退出到不记录的卸载状态 在记录介质上形成光注入单元,将光注入记录头,记录头包括在向记录介质记录信息时将注入到记录头上的光照射到记录介质上的光照射部分,其中光学 注射单元与头部缩回机构集成以形成单一的光学注射和头部缩回 机制。
    • 87. 发明授权
    • Light beam scanning apparatus
    • 光束扫描装置
    • US6040929A
    • 2000-03-21
    • US844994
    • 1997-04-23
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaHirokazu Aritake
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaHirokazu Aritake
    • G02B5/32G02B26/10G03H1/12G02B27/44
    • G02B5/32G02B26/106G03H1/0005
    • 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, one rotatable and one fixed, wherein the fixed hologram plate has a phase distribution .PHI..sub.H represented as a difference obtained when subtracting a reference wave phase .PHI..sub.0 from an object wave phase .PHI..sub.R, where X is a scanning direction and Y is a cross scanning direction, C.sub.0, C.sub.1, C.sub.2, Y.sub.0, and Z.sub.0 are constants, where .lambda..sub.2 is a wavelength of said incident light; and .lambda..sub.1 is a wavelength of a constructing wave used for forming said fixed hologram plate.
    • 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。 光束扫描装置包括至少两个可旋转和一个固定的全息图,其中固定全息图板具有相位分布PHI H,该相位分布PHI H表示为从对象波相位PHI R减去参考波相位PHI 0时获得的差值,其中 X是扫描方向,Y是交叉扫描方向,C0,C1,C2,Y0和Z0是常数,其中λ2是所述入射光的波长; λ1是用于形成所述固定全息图板的构造波的波长。
    • 89. 发明授权
    • Light beam scanning apparatus
    • 光束扫描装置
    • US5978111A
    • 1999-11-02
    • US453668
    • 1995-05-30
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaFumio YamagishiHirokazu Aritake
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaFumio YamagishiHirokazu Aritake
    • G02B5/32G02B26/10G03H1/12G02B5/18
    • G02B5/32G02B26/106G03H1/0005
    • 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.
    • 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。
    • 90. 发明授权
    • Light beam scanning apparatus
    • 光束扫描装置
    • US5861989A
    • 1999-01-19
    • US838934
    • 1997-04-25
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaShigetake IwataFumio YamagishiMasato NakashimaHirokazu AritakeMamoru Hokari
    • Shinya HasegawaShigeo KayashimaSatoshi MaedaShigetake IwataFumio YamagishiMasato NakashimaHirokazu AritakeMamoru Hokari
    • G02B5/32G02B26/10G03H1/12G02B5/18
    • G02B5/32G02B26/106G03H1/0005
    • 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.
    • 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。