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
    • 7. 发明申请
    • Optical scanning device
    • 光学扫描装置
    • US20060171009A1
    • 2006-08-03
    • US10549235
    • 2004-03-15
    • Bernardus Henrikus HendriksCoen Theodorus Hubertus LiedenbaumWillem Marie Coene
    • Bernardus Henrikus HendriksCoen Theodorus Hubertus LiedenbaumWillem Marie Coene
    • G02B26/08
    • G11B7/1367
    • An optical scanning device for scanning an optical record carrier comprising an information layer. Crosstalk cancellation is provided using a phase modulating element (40, 140) for generating a phase profile providing an annular spot shape for a subsidiary beam which is coaxial with the main beam. The phase profile varies with an azimuthal angle measured about the optical axis of the beam portion. Further, a grating element (6, 106) is provided to generate two side beams. Each of the side beams and the subsidiary beam are focused to respective spots on the information layer along with the main beam spot. A radiation detector arrangement (25, 125) is provided for detecting information signals in each of the main beam, the two side beams and the subsidiary beam, and a signal processing arrangement (41, 42,43, 44,46,47,49) conducts crosstalk cancellation between the respective information signals to generate an output information signal. The invention provides a four-channel crosstalk cancellation arrangement which is capable of providing significantly improved crosstalk canceling performance.
    • 一种用于扫描包括信息层的光学记录载体的光学扫描装置。 使用相位调制元件(40,140)提供串扰消除,用于产生与主光束同轴的辅助光束提供环形斑点形状的相位轮廓。 相位轮廓随着围绕光束部分的光轴测量的方位角而变化。 此外,提供光栅元件(6,106)以产生两个侧光束。 每个侧光束和辅助光束被聚焦到信息层上与主光束斑点相对应的斑点。 提供了用于检测主光束,两个侧光束和辅助光束中的每一个中的信息信号的辐射检测器装置(25,125),以及信号处理装置(41,42,43,44,44,47,49) )在各个信息信号之间进行串扰消除以产生输出信息信号。 本发明提供一种四通道串扰消除装置,其能够提供显着改善的串扰消除性能。
    • 8. 发明申请
    • Optical scanning device
    • 光学扫描装置
    • US20060087711A1
    • 2006-04-27
    • US10527870
    • 2003-09-12
    • Teunis TukkerBernardus Hendrikus HendriksCoen Theodorus Hubertus LiedenbaumStein Kuiper
    • Teunis TukkerBernardus Hendrikus HendriksCoen Theodorus Hubertus LiedenbaumStein Kuiper
    • G02B26/08
    • G02B3/14G02B26/005G11B7/1376G11B7/1398
    • A optical scanning device (1) for scanning an information layer (2) with a radiation beam (25) in a writing mode and a reading mode comprises a radiation source (7) for emitting the beam and an objective lens (10) for converging the beam so as to form a scanning spot (19) in the information layer. The device also includes a scanning spot power switch (20) for switching the size of the cross-section of the beam between a first size at the writing mode and a second, larger size at the reading mode so as to switch the rim intensity of the beam between a first intensity level (Irim,writing) at the writing mode and a second, higher intensity level (Irim,reading) at the reading mode, thereby switching the light power of the scanning spot between a first power level (Pwriting) at the writing mode and a second, lower power level (Preading) at the reading mode.
    • 一种用于以写入模式和读取模式用辐射束(25)扫描信息层(2)的光学扫描装置(1)包括用于发射光束的辐射源(7)和用于会聚的物镜(10) 以在信息层中形成扫描点(19)。 该装置还包括扫描点电源开关(20),用于在写入模式下在第一尺寸和读取模式之间切换第二尺寸的第二尺寸的横梁的横截面尺寸, 所述光束在所述写入模式下处于第一强度水平(Irim,写入)和在所述读取模式下的第二较高强度水平(Irim,读数)之间,从而将所述扫描点的光功率切换到第一功率水平(Pwriting) 在读取模式下为第二,较低功率级(Preading)。