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    • 82. 发明申请
    • Liquid Crystal Optical Element
    • 液晶光学元件
    • US20080266473A1
    • 2008-10-30
    • US11885180
    • 2006-02-17
    • Seiichi OsawaShinya SatoMasayuki IwasakiTakeshi Toyoda
    • Seiichi OsawaShinya SatoMasayuki IwasakiTakeshi Toyoda
    • G02F1/133G02F1/1343
    • G02F1/134309G02F2203/18G11B7/1367G11B7/1369G11B7/13925G11B2007/0006
    • A first electrode of a liquid crystal cell (21) is composed of a plurality of concentric electrodes (31 to 34) of a concentrically circular shape, the plurality of concentric electrodes are divided into a first group of concentric electrodes (44) near the center and a second group of concentric electrodes (45) near the periphery, and a concentric electrode between the two groups is an independent single electrode (36). A first correction unit that corrects spherical aberration of a high density DVD is composed of the two groups and a second correction unit that corrects aberration of a conventional DVD is composed of the first group of concentric electrodes (44). In the case of correcting the aberration of the conventional DVD, the independent concentric electrode (36) is supplied with a voltage between the voltages respectively supplied to adjacent concentric electrodes (35), (37). In the case of correcting the aberration of the high density DVD, the independent concentric electrode (36) is supplied with a voltage equal to the voltage supplied to the concentric electrode immediately lateral thereto (37).
    • 液晶单元(21)的第一电极由同心圆形的多个同心电极(31〜34)构成,多个同心电极被分成第一组同心电极(44),靠近中心 以及在周边附近的第二组同心电极(45),并且两组之间的同心电极是独立的单电极(36)。 校正高密度DVD的球面像差的第一校正单元由两组组成,并且校正常规DVD的像差的第二校正单元由第一组同心电极(44)组成。 在校正常规DVD的像差的情况下,独立同心电极(36)被提供在分别提供给相邻同心电极(35),(37)的电压之间。 在校正高密度DVD的像差的情况下,向独立同心电极(36)提供等于提供给紧邻其的同心电极的电压(37)。
    • 83. 发明授权
    • Aberration correction liquid crystal device and optical pickup apparatus
    • 异像校正液晶装置和光学拾取装置
    • US07414950B2
    • 2008-08-19
    • US10729969
    • 2003-12-09
    • Masayuki IwasakiMakoto Sato
    • Masayuki IwasakiMakoto Sato
    • G11B7/00
    • G11B7/13925G11B2007/0006
    • In an optical pickup apparatus which includes at least a laser light source and an object lens and can apply a laser beam to different types of optical discs, an aberration correction liquid crystal device is placed on the optical axis of the laser beam emitted from the laser light source. The aberration correction liquid crystal device includes a first electrode section being placed on the side of the laser light source and having a first electrode pattern for correcting aberration concerning a first optical disc, a second electrode section being placed on the side of the optical disc and having a second electrode pattern for correcting aberration concerning a second optical disc different from the first optical disc in type, and liquid crystal being sandwiched between the first and second electrode sections.
    • 在至少包含激光光源和物镜的光学拾取装置中,可以对不同类型的光盘施加激光束,将像差校正液晶装置放置在从激光发射的激光束的光轴上 光源。 像差校正液晶装置包括:第一电极部,其被配置在激光光源的一侧,具有用于校正与第一光盘有关的像差的第一电极图案,配置在光盘一侧的第二电极部; 具有用于校正与第一光盘类型不同的第二光盘的像差的第二电极图案,以及夹在第一和第二电极部分之间的液晶。
    • 87. 发明授权
    • Optical pickup and information recording and/or reproducing apparatus including the same
    • 光学拾取器和包括该拾取器的信息记录和/或再现装置
    • US06804185B2
    • 2004-10-12
    • US09738949
    • 2000-12-18
    • Ikuya KikuchiTakanori MaedaMitsuru SatoMasayuki Iwasaki
    • Ikuya KikuchiTakanori MaedaMitsuru SatoMasayuki Iwasaki
    • G11B700
    • G11B7/1381G11B7/1369
    • A variable optical unit is provided with at least two phase-shift regions for providing light with phase differences. Phase-shift amount of the phase-shift region is adjusted by the applied voltage in accordance with birefringence of an information medium. A light beam emitted from a light source is incident on the variable optical unit through a collimator lens and a beam splitter. The light beam is polarized in accordance with the aforementioned phase-shift amount of the variable optical unit and converged by an objective lens to radiate the information medium. The reflected light polarized due to the effect of the birefringence of the information medium is polarized again according to the phase-shift amount of the variable optical unit. The reflected light is thereby polarized in the direction in which the beam splitter can reflect the reflected light and then the reflected light reflected by the beam splitter is detected by the condenser lens and an optical detector.
    • 可变光学单元设置有至少两个相移区域,用于提供具有相位差的光。 根据信息介质的双折射,通过施加的电压来调整相移区域的相移量。 从光源发射的光束通过准直透镜和分束器入射在可变光学单元上。 光束根据上述可变光学单元的相移量被偏振,并由物镜会聚以辐射信息介质。 由于信息介质的双折射效应而偏振的反射光根据可变光学单元的相移量再次被极化。 因此,反射光在分束器能够反射反射光的方向上偏振,然后由聚光透镜和光学检测器检测由分束器反射的反射光。
    • 90. 发明授权
    • Heat-sensitive recording material
    • 热敏记录材料
    • US06642175B2
    • 2003-11-04
    • US09968904
    • 2001-10-03
    • Hirofumi MitsuoTsutomu WatanabeMasayuki Iwasaki
    • Hirofumi MitsuoTsutomu WatanabeMasayuki Iwasaki
    • B41M530
    • B41M5/42B41M5/3335B41M5/3336B41M5/3372B41M5/3375
    • A heat-sensitive recording material formed of a support having disposed thereon a heat-sensitive color-forming layer that includes an electron-donating leuco-dye and an electron-receiving compound, with the heat-sensitive color-forming layer including, N-(4-hydroxyphenyl)-p-toluenesulfonamide as the electron-donating leuco-dye. The heat-sensitive color-forming layer may include 2-benzyloxynaphthalene or a combination of 2-benzyloxynaphthalene and methylolstearic acid amide as a sensitizer, calcite-type precipitated calcium carbonate light and/or aluminium hydroxide as an inorganic pigment, polyvinyl alcohol having a degree of saponification of 85 to 99 mol % and a degree of polymerization of from 200 to 2000 as an adhesive, and 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane and/or 1,1,3-tris(2-methyl-4-hydroxy-5-cyclohexylphenyl)butane as an image stabilizer. When the layer includes 2-benzyloxynaphthalene and methylolstearic acid amide, a ratio (x/y) of 2-benzyloxynaphthalene (x) to methylolstearic acid amide (y) is preferably 95/5 to 40/60. The support can be essentially waste pulp. The heat-sensitive recording material of the present invention may additionally include a protective layer including an inorganic pigment and a water-soluble polymer.
    • 一种热敏记录材料,其由其上设置有包含供电子无色染料和电子接收化合物的热敏成色层的支撑体形成,所述热敏成色层包括N- (4-羟基苯基) - 对甲苯磺酰胺作为给电子无色染料。 感热成色层可以包括2-苄氧基萘或作为敏化剂的2-苄氧基萘和羟甲基硬脂酸酰胺的组合,作为无机颜料的方解石型沉淀碳酸钙轻和/或氢氧化铝,具有度 皂化为85〜99摩尔%,聚合度为200〜2000的粘合剂,1,1,3-三(2-甲基-4-羟基-5-叔丁基苯基)丁烷和/或1 ,1,3-三(2-甲基-4-羟基-5-环己基苯基)丁烷作为图像稳定剂。 当该层包含2-苄氧基萘和羟甲基硬脂酸酰胺时,2-苄氧基萘(x)与羟甲基硬脂酸酰胺(y)的比(x / y)优选为95/5〜40/60。 支撑体本质上可以是废浆。 本发明的热敏记录材料还可以包括包含无机颜料和水溶性聚合物的保护层。