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    • 5. 发明申请
    • OPTICAL ELEMENT
    • 光学元件
    • US20110102900A1
    • 2011-05-05
    • US12677587
    • 2009-07-15
    • Kazuya HayashibeSohmei Endoh
    • Kazuya HayashibeSohmei Endoh
    • G02B5/00
    • G02B1/118G02B1/11G02B1/115G02B5/045
    • An optical element includes a base, and primary structures and secondary structures disposed on a surface of the base, each of the primary structures and secondary structures being a projection or a depression. The primary structures constitute a plurality of rows of tracks on the surface of the base and are periodically repeatedly arranged at a fine pitch equal to or smaller than a wavelength of visible light. The secondary structures are smaller in size than the primary structures, and are provided between the primary structures, in the gaps in the arrangement of the primary structures, or on the surfaces of the primary structures.
    • 光学元件包括基座,以及设置在基座的表面上的主结构和次级结构,每个初级结构和次级结构都是突出部或凹陷部。 主要结构在基底的表面上构成多行轨道,周期性重复地以等于或小于可见光波长的细间距排列。 二级结构的尺寸小于初级结构,并且设置在主结构之间,主结构的间隙中或主结构的表面上。
    • 6. 发明授权
    • Optical recording medium and master disc for manufacturing optical recording medium
    • 用于制造光学记录介质的光学记录介质和母盘
    • US07438547B2
    • 2008-10-21
    • US11218482
    • 2005-09-06
    • Sohmei EndohAyumi Konishi
    • Sohmei EndohAyumi Konishi
    • B29D17/00G11B7/125
    • G11B7/128G11B7/00G11B7/007G11B7/135G11B7/24079G11B7/24085G11B7/261
    • An optical recording medium allowing high-density recording, where a groove having a shallow U-shaped cross section wider than certain width, a master for manufacturing optical recording medium, a manufacturing apparatus thereof, and a manufacturing method thereof are provided. A exposure beam (61) and a exposure beam (62) are recombined together with a first exposure beam (60) in a second PBS (47) so that traveling directions thereof may be the same direction. At this time, the exposure beam (61) and the exposure beam (62) are arranged so that both optical axes may be aligned at certain distance. Thereby, a width of a spot formed by combining these beams can be extended, and light exposure of the spot can be proper to form a shallow groove, as typically showed in FIG. 3.
    • 提供允许高密度记录的光学记录介质,其中具有宽于一定宽度的浅U形横截面的凹槽,用于制造光学记录介质的主体及其制造装置及其制造方法。 曝光光束(61)和曝光光束(62)在第二PBS(47)中与第一曝光光束(60)重新组合在一起,使得其行进方向可以是相同的方向。 此时,曝光光束(61)和曝光光束(62)被布置成使得两个光轴可以在一定距离处对准。 因此,通过组合这些光束形成的光斑的宽度可以延长,并且光斑的曝光可以适当地形成浅槽,如图1中典型地所示。 3。
    • 7. 发明申请
    • Optical recording medium and master disc for manufacturing optical recording medium
    • 用于制造光学记录介质的光学记录介质和母盘
    • US20060007836A1
    • 2006-01-12
    • US11218482
    • 2005-09-06
    • Sohmei EndohAyumi Konishi
    • Sohmei EndohAyumi Konishi
    • G11B7/00G11B7/24
    • G11B7/128G11B7/00G11B7/007G11B7/135G11B7/24079G11B7/24085G11B7/261
    • An optical recording medium allowing high-density recording, where a groove having a shallow U-shaped cross section wider than certain width, a master for manufacturing optical recording medium, a manufacturing apparatus thereof, and a manufacturing method thereof are provided. A exposure beam (61) and a exposure beam (62) are recombined together with a first exposure beam (60) in a second PBS (47) so that traveling directions thereof may be the same direction. At this time, the exposure beam (61) and the exposure beam (62) are arranged so that both optical axes may be aligned at certain distance. Thereby, a width of a spot formed by combining these beams can be extended, and light exposure of the spot can be proper to form a shallow groove, as typically showed in FIG.
    • 提供允许高密度记录的光学记录介质,其中具有宽于一定宽度的浅U形横截面的凹槽,用于制造光学记录介质的主体及其制造装置及其制造方法。 曝光光束(61)和曝光光束(62)在第二PBS(47)中与第一曝光光束(60)重新组合在一起,使得其行进方向可以是相同的方向。 此时,曝光光束(61)和曝光光束(62)被布置成使得两个光轴可以在一定距离处对准。 因此,通过组合这些光束形成的光斑的宽度可以延长,并且光斑的曝光可以适当地形成浅槽,如图1中典型地所示。
    • 10. 发明授权
    • Optical disc having an offset tracking groove for representing
multi-value digital information signals and reproducing apparatus
therefor
    • 具有用于表示多值数字信息信号的偏移跟踪槽和其再现装置的光盘
    • US5508996A
    • 1996-04-16
    • US962613
    • 1992-10-16
    • Sohmei Endoh
    • Sohmei Endoh
    • G11B7/005G11B7/00G11B7/007G11B7/013G11B7/09G11B7/24
    • G11B7/24G11B7/24085G11B7/007G11B7/0938
    • An optical disc for recording an information signal having a plurality of states has a portion on which a groove is formed in a predetermined direction, and the groove has a nominal position in the direction perpendicular to the predetermined direction over a predetermined length that represents a first state the information signal. The disc also has a portion on which the groove is not formed that represents a second state of the information signal. The groove can also be displaced from its nominal position in the direction perpendicular to the predetermined direction over a predetermined length, the amount of the displacement representing at least one further state of the information signal. An apparatus for reproducing such a disc has a light source illuminating the optical disc, at least two detectors that each generate an electrical signal in response to light by the optical disc, a first and a second calculating circuit each for calculating at least one result signal in response to the electrical signals from the detectors, and a multiple-value signal generator that generates an output signal having a plurality of states in response to a first result signal from the first calculating circuit and a third signal. The third signal is derived from the first result signal and a second result signal from the second calculating circuit.
    • 用于记录具有多个状态的信息信号的光盘具有在预定方向上形成有凹槽的部分,并且该凹槽在垂直于预定方向的方向上具有预定长度的标称位置,该预定长度表示第一 陈述信息信号。 该盘还具有不形成沟槽的部分,其表示信息信号的第二状态。 凹槽也可以在垂直于预定方向的方向上从其标称位置移位预定长度,位移量表示信息信号的至少一个另外的状态。 用于再现这种盘的装置具有照亮光盘的光源,至少两个检测器,每个检测器响应于光盘响应于光而产生电信号,第一和第二计算电路各自用于计算至少一个结果信号 响应于来自检测器的电信号,以及多值信号发生器,响应于来自第一计算电路的第一结果信号和第三信号,产生具有多个状态的输出信号。 第三信号从第一结果信号和第二计算电路的第二结果信号导出。