Fabrication of ferroelectric domain reversals
    12.
    发明授权
    Fabrication of ferroelectric domain reversals 失效
    铁电畴反转的制作

    公开(公告)号:US5395495A

    公开(公告)日:1995-03-07

    申请号:US044457

    申请日:1993-04-09

    申请人: Nobuharu Nozaki

    发明人: Nobuharu Nozaki

    CPC分类号: G02F1/3558

    摘要: The fabrication method for ferroelectric domain reversals wherein domain reversals are definitely produced in the vicinity of the surface of a ferroelectric by radiating a charged particle beam onto the ferroelectric. An SiO.sub.2 film 2 whose electrical resistance is higher than that of LiNbO.sub.3 is deposited on the surface of a substrate which is exposed to an electron beam, thereby fabricating domain reversals which extend along the direction an electron beam radiation.

    摘要翻译: 铁电畴反转的制造方法,其中通过将带电粒子束辐射到铁电体上,在铁电体的表面附近明确地产生畴反转。 电阻高于LiNbO 3的SiO 2膜2沉积在暴露于电子束的衬底的表面上,从而制造沿电子束辐射方向延伸的畴反转。

    Light beam scanning read-out apparatus and recording apparatus
    13.
    发明授权
    Light beam scanning read-out apparatus and recording apparatus 失效
    光束扫描读出装置和记录装置

    公开(公告)号:US4778991A

    公开(公告)日:1988-10-18

    申请号:US912062

    申请日:1986-09-26

    摘要: A light beam scanning read-out apparatus and a light beam scanning recording apparatus comprise an optical system for converting light guided inside of an optical waveguide into collimated optical wave, a device for generating surface acoustic waves which deflect the guided optical wave, a drive circuit for operating the surface acoustic wave generating device so that the frequency of the surface acoustic waves changes continuously, and a focusing grating coupler for converging the guided and deflected optical wave at a space outside of the optical waveguide. The read-out apparatus further comprises a sub-scanning device for moving a read-out original exposed to the converted light with respect to the optical waveguide, and a photodetector for detecting light obtained from the read-out original. The recording apparatus further comprises a sub-scanning device for moving a light-sensitive material exposed to the converged light with respect to the optical waveguide, and a modulator for modulating the guided optical wave with an image signal.

    摘要翻译: 光束扫描读出装置和光束扫描记录装置包括用于将光波导内的光转换为准直光波的光学系统,用于产生使导向光波偏转的表面声波的装置,驱动电路 用于操作表面声波产生装置,使得表面声波的频率连续变化;以及聚焦光栅耦合器,用于在光波导的外侧的空间处会聚被引导和偏转的光波。 读出装置还包括用于移动相对于光波导暴露于转换后的光的读出原稿的子扫描装置和用于检测从读出的原稿获得的光的光电检测器。 记录装置还包括用于移动相对于光波导暴露于会聚光的感光材料的副扫描装置和用图像信号调制被引导光波的调制器。

    Image forming method using laser beam
    14.
    发明授权
    Image forming method using laser beam 失效
    使用激光束的成像方法

    公开(公告)号:US5415978A

    公开(公告)日:1995-05-16

    申请号:US181255

    申请日:1994-01-13

    摘要: An image is formed in a color photosensitive material through scanning exposure by using at least one semiconductor laser excited solid laser including a semiconductor laser, a non-linear optical element and means for controlling the temperature thereof as a light source for producing a laser beam. The laser beam is modulated by an external modulator in accordance with the image to be formed. Among the combinations of photosensitive layers and laser beams, at least two laser beam light sources are such that a laser beam has a wavelength falling within .+-.20 nm from the maximum wavelength in the spectral sensitivity distribution of the corresponding photosensitive layer. Each photosensitive layer has a spectral sensitivity distribution with a peak width of up to 40 nm. The method enables to form an image in a conventional silver halide photosensitive material having spectral sensitivity in the visible region using a cost effective light source, the resulting image having color generated to a satisfactory density, free of a density variation, and hence of high quality.

    摘要翻译: 通过使用包括半导体激光器,非线性光学元件的至少一个半导体激光激光固体激光器和用于控制其温度作为用于产生激光束的光源的装置的扫描曝光,在彩色感光材料中形成图像。 激光束根据要形成的图像由外部调制器调制。 在感光层和激光束的组合中,至少两个激光束光源使得激光束的波长在对应的感光层的光谱灵敏度分布中与最大波长相差+/- 20nm。 每个感光层具有峰值宽度高达40nm的光谱灵敏度分布。 该方法能够使用成本有效的光源在可见光区域中具有光谱灵敏度的常规卤化银感光材料形成图像,所得到的图像产生的密度达到令人满意的密度,没有密度变化,因此具有高质量 。

    Laser diode pumped solid laser
    16.
    发明授权
    Laser diode pumped solid laser 失效
    激光二极管泵浦固体激光器

    公开(公告)号:US5315613A

    公开(公告)日:1994-05-24

    申请号:US70922

    申请日:1993-06-04

    摘要: A laser diode pumped solid laser comprises a solid laser medium, to which a rare earth metal has been added, a semiconductor laser, which produces a laser beam for pumping the solid laser medium, and a condensing lens, which causes the laser beam to converge in the solid laser medium. The condensing lens is located such that an optical axis of the condensing lens may deviate in the width direction of a semiconductor laser active layer from a center of irradiation area of the semiconductor laser. The amount of light returning to the semiconductor laser is thereby reduced markedly, and good stability in the output power of the laser diode pumped solid laser is obtained. A nonlinear optical material for converting the wavelength of a laser beam, which has been produced by the solid laser medium, into a different wavelength may be located in a solid laser resonator.

    摘要翻译: 激光二极管泵浦固体激光器包括固体激光介质,添加有稀土金属,半导体激光器,其产生用于泵浦固体激光介质的激光束和聚光透镜,其使激光束会聚 在固体激光介质中。 聚光透镜的定位使得聚光透镜的光轴可以从半导体激光器有源层的宽度方向偏离半导体激光器的照射区域的中心。 从而显着降低了返回到半导体激光器的光量,并且获得了激光二极管泵浦固体激光器的输出功率的良好的稳定性。 用于将由固体激光介质产生的激光束的波长转换为不同波长的非线性光学材料可以位于固体激光谐振器中。

    Drive method of liquid crystal device
    17.
    发明授权
    Drive method of liquid crystal device 失效
    液晶装置的驱动方式

    公开(公告)号:US5016983A

    公开(公告)日:1991-05-21

    申请号:US372152

    申请日:1989-06-27

    摘要: A method for driving a twisted nematic type liquid crystal shutter, the liquid crystal shutter having a pair of transparent substrates held opposite to each other; a pair of patterned transparent electrodes each formed on the planes of the transparent substrates and arranged opposite to each other so that the overlapping parts of the patterns form display pixels; a pair of aligning film each formed on the pattern of the transparent electrode and on the plane; a liquid crystal material contained in a space between the transparent substrates; and a pair of transmission type polarizers each arranged on the outside plane of the transparent substrate which is counter to the plane on which the patterned transparent electrode is formed, comprising the steps of: applying an electric voltage to establish static or multiplex driving to the transparent electrodes so as to prevent the transmission of incident light when no image signal is received from an external apparatus; and preventing the application of the electric voltage to transparent electrodes which relate to the pixels selected by the image signal so as to permit the transmission incident light when the image signal is received from the external apparatus.

    摘要翻译: 一种用于驱动扭曲向列型液晶快门的方法,液晶快门具有彼此相对保持的一对透明基板; 一对图案化的透明电极,各自形成在透明基板的平面上并且彼此相对布置,使得图案的重叠部分形成显示像素; 一对取向膜各自形成在透明电极的图案上并在平面上; 包含在透明基板之间的空间中的液晶材料; 以及一对透射型偏振器,每个透射型偏振器均布置在与形成有图案的透明电极的平面相反的透明基板的外侧平面上,包括以下步骤:施加电压以建立静态或多路驱动至透明 电极,以防止从外部设备接收图像信号时的入射光的透射; 并且防止将电压施加到与由图像信号选择的像素相关的透明电极,以便当从外部设备接收图像信号时允许透射入射光。

    Light beam deflector/modulator
    18.
    发明授权
    Light beam deflector/modulator 失效
    光束偏转器/调制器

    公开(公告)号:US4961632A

    公开(公告)日:1990-10-09

    申请号:US288837

    申请日:1988-12-23

    IPC分类号: G02F1/335 H04N1/12

    CPC分类号: H04N1/1275 G02F1/335 H04N1/12

    摘要: A waveguide-type light deflector or modulator includes an optical waveguide for guiding a light beam therethrough along a light path, and an interdigital transducer for generating surface elastic waves in the optical waveguide to diffract the light beam and for propagating the surface elastic waves in opposite directions across the light path, the interdigital transducer being transversely disposed to the light path in a substantially central position in the light path. In the light deflector, an alternating voltage with a continuously varying frequency is applied to the interdigital transducer to enable the surface elastic waves to continuously diffract and deflect the light beam. In the light modulator, the application of an alternating voltage to the interdigital transducer is controlled to vary the diffraction efficiency of the light beam, thereby to modulate the light beam.

    摘要翻译: 波导型光偏转器或调制器包括用于沿着光路引导光束的光波导,以及用于在光波导中产生表面弹性波的叉指式换能器,以衍射光束并将表面弹性波传播到相反的方向 跨越光路的方向,叉指式换能器在光路中的基本中心位置横向地设置在光路上。 在光偏转器中,具有连续变化频率的交流电压被施加到叉指式换能器,以使表面弹性波能够连续地衍射和偏转光束。 在光调制器中,控制向叉指换能器施加交流电压以改变光束的衍射效率,从而调制光束。

    Variable acoustical deflection of an optical wave in an optical waveguide
    19.
    发明授权
    Variable acoustical deflection of an optical wave in an optical waveguide 失效
    光波导中光波的可变声学偏转

    公开(公告)号:US4929042A

    公开(公告)日:1990-05-29

    申请号:US127020

    申请日:1987-11-27

    IPC分类号: G02F1/335

    CPC分类号: G02F1/335

    摘要: An optical deflecting apparatus comprises a first generator for generating a first surface acoustic wave which advances to intersect an optical path of a guided optical wave advancing inside of an optical waveguide and diffracts and deflects the guided optical wave, and a second generator for generating a second surface acoustic wave which advances to intersect the optical path of the guided and diffracted optical wave and diffracts and deflects the guided and diffracted optical wave in a direction that amplifies the deflection caused by the diffraction. The first and second surface acoustic wave generators are formed to continuously change the frequencies of the first and second surface acoustic waves and the directions of advance thereof while satisfying the conditions of k1+k1=k2 and k2+k2=k3 wherein k1 and k2 respectively denote wave vectors of the guided optical wave before and after being diffracted by the first surface acoustic wave, k3 denotes the wave vector of the guided optical wave after being diffracted by the second surface acoustic wave, and k1 and k2 respectively denote wave vectors of the first and second surface acoustic waves.