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公开(公告)号：US20050207326A1
公开(公告)日：2005-09-22
申请号：US10517472
申请日：2003-06-11
IPC分类号： G11B7/24038 , G11B7/241 , G11B7/26
CPC分类号： G11B7/24038
摘要： A dual-stack optical data storage medium (20) is described for read out using a focused radiation beam (29) with a wavelength of 400-410 nm and a Numerical Aperture (NA) of 0.84-0.86. The medium has a substrate (21) and a first stack of layers named L0 (22) comprising a first information layer and a second stack of layers named L1 (23), comprising a second information layer. A radiation beam (29) transparent spacer layer (24) is present between L0 and L1. A transmission stack named TS0 with a thickness dTS0 and an effective refractive index nTS0 contains all layers between L0 and an entrance face (26) of the medium (20). A transmission stack named TS1 with a thickness dTS1 and an effective refractive index nTS1 containing all layers between L1 and the entrance face (26). The spacer layer (24) has a thickness selected from the range 20-30 μm, the thickness dTS0 in dependence on the refractive index nTS0 and the thickness dTS1 in dependence on the refractive index nTS0 are within a specified area. In this way a reliable read out of both the first and the second information layer of respectively L0 and L1 is achieved.
摘要翻译： 描述了使用波长为400-410nm和数值孔径（NA）为0.84-0.86的聚焦辐射束（29）读出的双层光学数据存储介质（20）。 介质具有衬底（21）和名为L 0（22）的层的第一层叠层，包括第一信息层和名为L 1（23）的层的第二叠层，包括第二信息层。 在L 0和L 1之间存在辐射束（29）透明间隔层（24）。具有厚度d T TS 0和有效折射率n TS0 < / SUB>包含L 0与介质（20）的入射面（26）之间的所有层。 名称为TS 1的传输堆叠，其厚度为d 1，TS 1，有效折射率n <1> TS1 <1>包含在L 1和入射面（26）之间的所有层。 间隔层（24）具有选自20-30μm的范围的厚度，根据折射率n> TS0 <！ - SIPO
- >和厚度d TS1 在指定区域内。 以这种方式，实现了分别为L 0和L 1的第一和第二信息层的可靠读出。 -
2.发明申请Method and apparatus for measuring the depth of a data record layer in an information record medium 审中-公开用于测量信息记录介质中的数据记录层的深度的方法和装置公开(公告)号：US20070159937A1
公开(公告)日：2007-07-12
申请号：US10577894
申请日：2004-10-27
申请人： Sjoerd Stallinga , Teunis Tukker
发明人： Sjoerd Stallinga , Teunis Tukker
IPC分类号： G11B7/00
CPC分类号： G11B19/12 , G11B7/13927 , G11B2007/0013
摘要： Apparatus and method for measuring the depth of data record layers of an optical storage disc having a cover layer of thickness d, an entrance surface (S), and, for example, a first data layer (L0), a second data layer (L1) and a third data layer (L2). The optical apparatus comprises a spherical aberration compensator (SA), and an objective lens (OL) mounted in an actuator (AC), the actuator (AC) receiving a current I and being arranged and configured to move the objective lens (OL) in the z (axial) axis relative to the optical storage disc. Light incident on the objective lens (OL) is converged into a cone-like beam such that it is focussed on one of the data layers (D1). A control signal is used to keep the scanning spot focussed on the data layer (L1). This control signal is the focus error signal (FES) and is provided by the actuator drive (AC). In order to provide the spherical aberration compensator (SA) with right control signal, the depth of each data layer must be measured and means are provided for measuring the depth of the data layer(s) of a single- or multi-layer disc, and this achieved by using the distance between zero-crossings of the focus error signal (FES).
摘要翻译： 用于测量具有厚度d的覆盖层，入射表面（S）和例如第一数据层（L 0），第二数据层（L 0）的光学存储盘的数据记录层的深度的装置和方法 L 1）和第三数据层（L 2）。 光学装置包括球面像差补偿器（SA）和安装在致动器（AC）中的物镜（OL）），致动器（AC）接收电流I并被布置和配置成将物镜（OL） 相对于光存储盘的z（轴）轴。 入射在物镜（OL）上的光会聚成锥形束，使其聚焦在数据层（D 1）之一上。 使用控制信号将扫描点聚焦在数据层（L1）上。 该控制信号是聚焦误差信号（FES），由致动器驱动（AC）提供。 为了提供具有右控制信号的球面像差补偿器（SA），必须测量每个数据层的深度，并提供用于测量单层或多层盘的数据层的深度的装置， 并且通过使用聚焦误差信号（FES）的过零点之间的距离来实现。
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公开(公告)号：US20060176574A1
公开(公告)日：2006-08-10
申请号：US10564535
申请日：2004-07-07
IPC分类号： G02B3/12
CPC分类号： G02B3/14 , G02B26/005 , G02B27/09 , G11B7/1372 , G11B7/1398
摘要： A beam-shaping element comprises a cavity, a first: fluid and a second fluid having different indices of refraction. An optical axis extends through the cavity. The cavity has at least one curved surface extending transverse the optical axis. At least one pump is arranged to pump the fluids between a first configuration in which the first fluid occupies the cavity, and a second configuration in which the second fluid occupies the cavity.
摘要翻译： 光束成形元件包括空腔，第一：流体和具有不同折射率的第二流体。 光轴延伸穿过空腔。 空腔具有横向于光轴延伸的至少一个弯曲表面。 至少一个泵布置成在第一配置（其中第一流体占据空腔）和第二流体占据空腔的第二构造之间泵送流体。
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公开(公告)号：US20050286389A1
公开(公告)日：2005-12-29
申请号：US10531014
申请日：2003-09-15
申请人： Teunis Tukker
发明人： Teunis Tukker
CPC分类号： G11B7/1353 , G11B7/0956 , G11B2007/0006
摘要： This invention relates to an optical scanning device for scanning an optical record carrier and detecting a tilt characteristic of the optical record carrier during scanning. The device includes a redirecting structure (26) arranged on an objective lens (10) to redirect a part of a radiation beam, when travelling towards the record carrier, differently to a main part of the radiation beam. The redirected beam part follows a path which is different to that of a path followed by the main beam part, towards a position sensitive detector in a detection system (16).
摘要翻译： 本发明涉及一种用于扫描光学记录载体并在扫描期间检测光学记录载体的倾斜特性的光学扫描装置。 所述装置包括布置在物镜（10）上的重定向结构（26），以在朝向记录载体行进时重新定向辐射束的一部分，不同于辐射束的主要部分。 重定向的光束部分遵循与检测系统（16）中的位置敏感检测器相对应的跟随主光束部分的路径不同的路径。
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公开(公告)号：US20070070328A1
公开(公告)日：2007-03-29
申请号：US10595358
申请日：2004-10-15
申请人： Wouter Rensen , Michael Van Beek , Marjolein Van Der Voort , Bernardus Bakker , Gerhardus Lucassen , Teunis Tukker
发明人： Wouter Rensen , Michael Van Beek , Marjolein Van Der Voort , Bernardus Bakker , Gerhardus Lucassen , Teunis Tukker
CPC分类号： A61B5/0059 , A61B5/0068 , A61B5/489
摘要： The present invention enables to determine the property of a fluid, such as for the purposes of in vivo blood analysis. First the position of a volume of interest through which the fluid flows is determined by means of an optical detection step by making use of an objective. Preferably the optical detection step is an imaging step. Next the objective is moved to bring the focal point of the objective to the volume of interest. In this position an optical spectroscopic step is performed. This has the advantage that the measurement beam for performing the optical spectroscopy travels along the optical axis for optimum efficiency.
摘要翻译： 本发明能够确定流体的性质，例如用于体内血液分析的目的。 首先，通过利用目标的光学检测步骤来确定流体流过的感兴趣体积的位置。 优选地，光学检测步骤是成像步骤。 接下来，将目标转移到目标的焦点。 在该位置，进行光学分光步骤。 这具有以下优点：用于执行光学光谱的测量光束沿着光轴行进以获得最佳效率。
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公开(公告)号：US20060067204A1
公开(公告)日：2006-03-30
申请号：US10536840
申请日：2003-11-24
CPC分类号： G11B7/1275 , G11B7/1374 , G11B2007/0006
摘要： The invention relates to an objective lens and an optical device for scanning different information carriers having different cover layer thicknesses, with different numerical apertures. The objective lens (10, 20) comprises at least an annular part (101, 201) having a first numerical aperture and a central part (102, 203) having a second numerical aperture. The second numerical aperture is higher than the first numerical aperture.
摘要翻译： 本发明涉及一种用于扫描具有不同数值孔径的具有不同覆盖层厚度的不同信息载体的物镜和光学装置。 物镜（10,20）至少包括具有第一数值孔径的环形部分（101,201）和具有第二数值孔径的中心部分（102,203）。 第二数值孔径高于第一数值孔径。
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公开(公告)号：US20080062852A1
公开(公告)日：2008-03-13
申请号：US11576904
申请日：2005-10-13
IPC分类号： G11B7/00
CPC分类号： G11B7/1378 , G11B7/0909 , G11B7/14
摘要： The present invention relates to an optical scanning device for reading and/or writing on a plurality of tracks on an optical storage medium (1), said scanning device comprising optical means (17) for focusing a plurality of beams, after being reflected from said medium, onto an observation plane (22), and for introducing astigmatism into at least one of said reflected beams, and a photo-detector (18) comprising a plurality of detector segments, arranged in said observation plane (22) to receive said at least one astigmatic reflected beam. The scanning device further comprises means (19) for generating a focus error signal (FES) by combining signals produced by said detector segments, means (19) for generating a central aperture signal by adding signals from all the detector segments, and means (19, 21) for determining when said central aperture signal exceeds a predefined threshold, indicating a useful range of said focus error signal, and, when this is the case, adjusting the focus of said objective lens (15) based on said focus error signal. According to this design, the CA-signal ensures that tracking is only based on the focus error signal in a range in which tracking can be based on it, thereby ensuring satisfactory closed loop tracking.
摘要翻译： 本发明涉及一种用于在光学存储介质（1）上的多个磁道上读取和/或写入光学扫描装置，所述扫描装置包括用于聚焦多个光束的光学装置（17），在从所述光学存储介质 介质，到观察平面（22）上，并且用于将散光引入到所述反射光束中的至少一个中;以及光检测器（18），包括多个检测器段，布置在所述观察平面（22）中以接收所述在 至少一个散光反射光束。 扫描装置还包括用于通过组合由所述检测器段产生的信号来产生聚焦误差信号（FES）的装置（19），用于通过加上来自所有检测器段的信号产生中心孔径信号的装置（19）和装置 ，21），用于确定所述中心孔径信号何时超过预定阈值，指示所述聚焦误差信号的有用范围，并且在这种情况下，基于所述聚焦误差信号调整所述物镜（15）的焦点。 根据这种设计，CA信号确保跟踪仅基于跟踪可以基于其的范围内的聚焦误差信号，从而确保令人满意的闭环跟踪。
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公开(公告)号：US20060072419A1
公开(公告)日：2006-04-06
申请号：US10539900
申请日：2003-12-01
IPC分类号： G11B7/00
CPC分类号： G11B7/1398 , G11B7/1362 , G11B7/1376
摘要： An optical scanning device (1) is for scanning an information layer (2) by means of a radiation beam (4). The device includes a radiation source (7) for supplying said radiation beam, an objective lens (10) for transforming said radiation beam into a scanning spot (19) at the position of the information layer, and a beam intensity modifier (8) for redistributing the intensity (I2) over the cross-section of said radiation beam in order to change the size of said scanning spot. The beam intensity modifier has an entrance pupil (8a) and an exit pupil (8b). Furthermore, it is arranged so that any ray of said radiation beam entering said beam intensity modifier at a distance r1 from the central ray of that beam reflects at least twice between said entrance and exit pupils that the transverse magnification M of said modifier is defined by a decreasing function of the distance r1.
摘要翻译： 光学扫描装置（1）用于通过辐射束（4）扫描信息层（2）。 该装置包括用于提供所述辐射束的辐射源（7），用于将所述辐射束变换成信息层位置的扫描点（19）的物镜（10）和用于 在所述辐射束的横截面上重新分布强度（I 2> 2 ），以便改变所述扫描点的尺寸。 光束强度调节器具有入射光瞳（8a）和出射光瞳（8b）。 此外，它被布置成使得进入所述光束强度调节器的所述辐射束的任何射线距离该光束的中心射线的距离r 1在所述入射和出射光瞳之间反射至少两次，横向 所述修正器的倍率M由距离r 1> 1的递减函数定义。
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公开(公告)号：US20060050621A1
公开(公告)日：2006-03-09
申请号：US10531030
申请日：2003-09-12
IPC分类号： G11B7/00
摘要： An optical scanning device 1 detects an information signal from an optical record carrier 2 using differential interference contrast. Two radiation beams 13a, 13b are generated and focused to two distinct spots 15a, 15b respectively displaced along a data track on the information layer of an optical record carrier. The relative positions of the spots in lands and pits can generate a path length difference between the reflected beams 17a, 17b. This path length difference causes the beams to interfere either constructively or destructively, depending on the relative land/pit position in the data track of the spots. This interference causes a detectable signal to be generated, the signal being representative of a transition from a pit to a land on the information layer 4 or vice versa.
摘要翻译： 光学扫描装置1使用差分干涉对比度从光学记录载体2检测信息信号。 产生两个辐射束13a，13b并聚焦到分别沿着光学记录载体的信息层上的数据轨迹移位的两个不同点15a，15b。 斑点在平台和凹坑中的相对位置可以产生反射光束17a，17b之间的路径长度差。 该路径长度差导致波束根据斑点的数据轨道中的相对陆/坑位置而建设性地或破坏性地干涉。 这种干扰导致产生可检测信号，该信号代表从信息层4上的凹坑到岸台的转变，反之亦然。
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公开(公告)号：US20050207028A1
公开(公告)日：2005-09-22
申请号：US10518254
申请日：2003-06-23
CPC分类号： G11B7/13922 , G11B7/1374
摘要： An optical scanning device (1) for scanning an information layer (4) of an optical record carrier (2), the device including a radiation source (11) for generating a radiation beam (12) and an objective system (18) for converging the radiation beam (12) on the information layer, the objective system (18) being characterized in that the ratio of the root mean square of the optical path difference's (OPD's) generated by the objective system at oblique beam entrance to the system satisfies the condition of formula (I) within the field of the objective system, where OPD(A31) is the contribution of the third order Zernike coma to the root mean square wavefront aberration and OPD(A51) is the contribution of the fifth order Zernike coma to the root mean square wavefront aberration.
摘要翻译： 一种用于扫描光学记录载体（2）的信息层（4）的光学扫描装置（1），该装置包括用于产生辐射束（12）的辐射源（11）和用于会聚的物镜系统（18） 信息层上的辐射束（12），物镜系统（18）的特征在于，由物镜系统在系统的斜射入口处产生的光程差（OPD）的均方根的比值满足系统 在目标系统的领域内，公式（I）的条件，其中OPD（A 31）是三次泽尼克斯昏迷对均方根波前像差和OPD（A 51）的贡献是第五阶Zernike 昏迷到均方根波前像差。
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