会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 42. 发明授权
    • Optical pickup device
    • 光学拾取装置
    • US07535814B2
    • 2009-05-19
    • US11704967
    • 2007-02-12
    • Masahiko NishimotoNaoki NakanishiMasayuki Ono
    • Masahiko NishimotoNaoki NakanishiMasayuki Ono
    • G11B7/00
    • G11B7/1275G11B7/0903G11B7/1353G11B2007/0006
    • An optical pickup device includes a diffraction grating for separating a light beam from a semiconductor laser into at least three light beams. The diffraction grating is partitioned into five areas each having a given periodic structure: a first area; a second area adjacent to the first area in a first direction; a third area adjacent to the first and second areas in a second direction; a fourth area sandwiching the third area with the first area; and a fifth area adjacent to the fourth area in the first direction and sandwiching the third area with the second area. The phase of the periodic structure of each of the first and fifth areas is ahead of that of the third area by substantially 90°. The phase of the periodic structure of each of the second and fourth areas is behind that of the third area by substantially 90°.
    • 光学拾取装置包括用于将来自半导体激光器的光束分离成至少三个光束的衍射光栅。 衍射光栅被划分成五个区域,每个区域具有给定的周期性结构:第一区域; 在第一方向上邻近所述第一区域的第二区域; 在第二方向上邻近所述第一和第二区域的第三区域; 第三个区域与第一个区域相区别; 以及与第一方向相邻的第四区域的第五区域,并且将第三区域与第二区域夹在中间。 第一和第五区域中的每一个的周期性结构的相位比第三区域的周期结构的相位大致90°。 第二区域和第四区域中的每一个的周期性结构的相位在第三区域的周期结构的相位之后大致为90°。
    • 44. 发明授权
    • Optical pickup apparatus
    • 光拾取装置
    • US07247826B2
    • 2007-07-24
    • US11384291
    • 2006-03-21
    • Shinichi HamaguchiNaoki NakanishiTatsuya NakamoriNaoto Shimada
    • Shinichi HamaguchiNaoki NakanishiTatsuya NakamoriNaoto Shimada
    • G02B7/04G02B27/40G02B27/64
    • G02B5/32G02B7/04G02B27/1073G02B27/1093G02B27/40G11B7/123G11B7/1275G11B7/131G11B7/1353G11B7/1356G11B2007/0006
    • An optical path coupling member aligns an optical axis directed to a light condensing member of the first wavelength light having a shortest wavelength with that of the third wavelength light having a longest wavelength. A diffraction element condenses +2nd order diffracted light of the first wavelength light and +1st order diffracted light of the second wavelength light and third wavelength light into a first photodetector, the −2nd order diffracted light of the first wavelength light and −1st order diffracted light of the third wavelength light into a second photodetector, and −1st order diffracted light of the remaining second wavelength light into a photodetector, using ±2nd order diffracted light of the first wavelength light and ±1st order diffracted light of the second wavelength light and third wavelength light as signal light from an optical information recording medium. Consequently, the overall size of the optical pickup apparatus is reduced.
    • 光路耦合部件将具有最短波长的第一波长光的聚光部件的光轴与具有最长波长的第三波长光的光轴对准。 衍射元件将第一波长光的+ 2级衍射光和第二波长光和第三波长光的+ 1级衍射光聚合成第一光电检测器,第一波长光和-1级衍射的-2级衍射光 使用第二波长光的±2级衍射光和第二波长光的±1级衍射光,将第三波长的光照射到第二光电检测器中,并将剩余的第二波长的光的-1级衍射光转换成光电检测器,并且 第三波长光作为来自光学信息记录介质的信号光。 因此,光拾取装置的总体尺寸减小。
    • 45. 发明申请
    • Optical pickup apparatus
    • 光拾取装置
    • US20060237624A1
    • 2006-10-26
    • US11384291
    • 2006-03-21
    • Shinichi HamaguchiNaoki NakanishiTatsuya NakamoriNaoto Shimada
    • Shinichi HamaguchiNaoki NakanishiTatsuya NakamoriNaoto Shimada
    • G02B7/04G02B27/40
    • G02B5/32G02B7/04G02B27/1073G02B27/1093G02B27/40G11B7/123G11B7/1275G11B7/131G11B7/1353G11B7/1356G11B2007/0006
    • An optical path coupling member aligns an optical axis directed to a light condensing member of the first wavelength light having a shortest wavelength with that of the third wavelength light having a longest wavelength. A diffraction element condenses +2nd order diffracted light of the first wavelength light and +1st order diffracted light of the second wavelength light and third wavelength light into a first photodetector, the −2nd order diffracted light of the first wavelength light and −1st order diffracted light of the third wavelength light into a second photodetector, and −1st order diffracted light of the remaining second wavelength light into a photodetector, using ±2nd order diffracted light of the first wavelength light and ±1st order diffracted light of the second wavelength light and third wavelength light as signal light from an optical information recording medium. Consequently, the overall size of the optical pickup apparatus is reduced.
    • 光路耦合部件将具有最短波长的第一波长光的聚光部件的光轴与具有最长波长的第三波长光的光轴对准。 衍射元件将第一波长光的+ 2级衍射光和第二波长光和第三波长光的+ 1级衍射光聚合成第一光电检测器,第一波长光和-1级衍射的-2级衍射光 使用第二波长光的±2级衍射光和第二波长光的±1级衍射光,将第三波长的光照射到第二光电检测器中,并将剩余的第二波长的光的-1级衍射光转换成光电检测器,并且 第三波长光作为来自光学信息记录介质的信号光。 因此,光拾取装置的总体尺寸减小。
    • 46. 发明申请
    • Optical semiconductor device
    • 光半导体器件
    • US20060215508A1
    • 2006-09-28
    • US11352648
    • 2006-02-13
    • Naoki NakanishiMasayuki OnoMasahiko NishimotoTatsuya Nakamori
    • Naoki NakanishiMasayuki OnoMasahiko NishimotoTatsuya Nakamori
    • G11B7/00
    • G11B7/0903G11B7/0956G11B7/1353G11B2007/0006
    • An optical semiconductor device both capable of recording and reproducing information with respect to plural optical disks having different track pitches and capable of shortening an assembly time and achieving a cost reduction without the need to make a highly-precise assembly adjustment is provided. An optical semiconductor device is constituted by a semiconductor laser element, an emitted light beam branching element for branching a light beam emitted from the semiconductor laser element into a main beam and a plurality of sub beams, an objective lens for focusing the main beam and the sub beams onto an optical disk, and a light-receiving element for signal detection for detecting each of the main beam and the sub beams reflected by the optical disk. Further, a light distribution of the sub beams branched by the emitted light beam branching element has a shape equal to or narrower in an optical disk radial direction than a shape obtained by bisecting a light distribution of the main beam when the sub beams enter the objective lens.
    • 提供了能够记录和再现关于具有不同轨道间距的多个光盘的信息并能够缩短组装时间并且实现成本降低而不需要进行高精度组装调整的光学半导体器件。 光半导体器件由半导体激光元件,发射光束分支元件构成,用于将从半导体激光元件发射的光束分支成主光束和多个子光束,用于聚焦主光束的物镜和 子光束到光盘,以及用于信号检测的光接收元件,用于检测由光盘反射的主光束和子光束中的每一个。 此外,由发射光束分支元件分支的子光束的光分布具有与光束径向方向相等或更窄的形状,而不是当子光束进入物镜时将主光束的光分布平分得到的形状 镜片。
    • 50. 发明授权
    • Optical pickup device
    • 光学拾取装置
    • US07940631B2
    • 2011-05-10
    • US12090563
    • 2007-07-18
    • Naoto ShimadaHiroaki YamamotoNaoki NakanishiMasahiko NishimotoTakuya Okuda
    • Naoto ShimadaHiroaki YamamotoNaoki NakanishiMasahiko NishimotoTakuya Okuda
    • G11B7/135
    • G11B7/0903G11B7/1353
    • An optical pickup device includes a diffraction grating 12 for separating an emitted light beam into at least three light beams. The diffraction grating 12 is divided into three regions by dividing lines D1 and D2 extending in a first direction parallel to a tangent line of a track of an optical information recording medium. A second region 12B is divided into four sub-blocks by a dividing line D3 extending in the first direction and a dividing line D4 extending in a second direction that crosses the first direction. The sub-blocks located diagonally opposite to each other have a same phase, and the sub-blocks located adjacent to each other have a phase difference of approximately 180 degrees. The first region 12A has a phase difference of approximately 90 degrees from each sub-block of the second region 12B, and the first region 12A has a phase difference of approximately 180 degrees from the third region 12C.
    • 光学拾取装置包括用于将发射的光束分离成至少三个光束的衍射光栅12。 衍射光栅12通过沿与光信息记录介质的轨道的切线平行的第一方向延伸的线D1和D2分成三个区域。 第二区域12B通过沿第一方向延伸的分割线D3和沿与第一方向交叉的第二方向延伸的分割线D4被分成四个子块。 彼此对角地相对的子块具有相同的相位,并且彼此相邻的子块具有大约180度的相位差。 第一区域12A与第二区域12B的每个子块具有大约90度的相位差,并且第一区域12A与第三区域12C具有大约180度的相位差。