OPTICAL DATA STORAGE MEDIUM AND USE OF SUCH MEDIUM
    2.
    发明公开
    OPTICAL DATA STORAGE MEDIUM AND USE OF SUCH MEDIUM 审中-公开
    光学数据存储介质和这种介质的使用

    公开(公告)号:EP1512142A1

    公开(公告)日:2005-03-09

    申请号:EP03722950.7

    申请日:2003-05-14

    IPC分类号: G11B7/007

    摘要: A multi-stack optical data storage medium (20) for rewritable recording using a focused radiation beam (30), entering through an entrance face (25) is described. The medium (20) has a substrate (1a, 1b) and an L0 recording stack (2) and an L1 recording stack(3) both comprising a phase-change type L0 and L1 recording layer and the recording stacks are separated by a transparent spacer layer (4). The L0 recording stack (2) is present at a position closest to the entrance face (25) and has an optical transmission of TL0a and TL0c when the phase-change layer respectively is in the amorphous phase and in the crystalline phase. The medium (20) contains pre-recorded information modulated in at least one of: an embossed pregroove (21) in the substrate (1a, 1b), embossed pits in the substrate and recorded phase-change marks in at least one of the recording layers L0 and L1 (6, 11). The pre-recorded information contains a flag whether formatting of the L0 recording layer of the L0 recording stack (2) is needed depending on the transmission values TL0a and TL0c of the L0 recording stack (2). In this way it is achieved that the medium (20) has a good playability, recordability and random access behavior even when the L0 recording layer (2) has been partially recorded with information.

    DUAL THREE-SPOTS OPTICAL SCANNING DEVICE
    3.
    发明公开
    DUAL THREE-SPOTS OPTICAL SCANNING DEVICE 审中-公开
    双三点光学扫描装置

    公开(公告)号:EP1464050A2

    公开(公告)日:2004-10-06

    申请号:EP02788432.9

    申请日:2002-12-18

    IPC分类号: G11B7/09

    摘要: A radiation detector array for radial tracking error detection for a dual-wavelength optical scanning device. Three spot detectors (100, 102, 104) for conducting three spot radial tracking error detection at each of the two different wavelengths. Satellite spot detectors (102, 104) are divided into three detector elements and one switched depending on the wavelength currently being used for scanning.

    摘要翻译: 一种用于双波长光学扫描装置的径向跟踪误差检测的辐射探测器阵列。 三个点检测器(100,102,104)用于在两个不同波长中的每一个处进行三点的径向跟踪误差检测。 卫星点探测器(102,104)被分成三个探测器元件,并且根据当前用于扫描的波长切换一个。

    LIGHTING DEVICE AND METHOD OF GENERATING OUTPUT ILLUMINATION
    4.
    发明公开
    LIGHTING DEVICE AND METHOD OF GENERATING OUTPUT ILLUMINATION 审中-公开
    白兰地VERFAHREN ZUR ERZEUGUNG EINER BELEUCHTUNGSABGABE BELEUCHTUNGSVORRICHTUNG

    公开(公告)号:EP2359055A1

    公开(公告)日:2011-08-24

    申请号:EP09760995.2

    申请日:2009-11-11

    IPC分类号: F21S8/10 F21S8/12

    摘要: The invention relates to a lighting device for generating output illumination having at least one directional characteristic. The lighting device includes at least one light-emitting device and at least one optical element disposed in an optical path of the light-emitting device. The lighting device also includes a screen-like member for changing at least one physical property of light passing therethrough and an optical device for generating an intermediate image on the screen-like member. The screen-like member and the optical device are located in the optical path between the light-emitting device and the optical element projecting the intermediate image.

    摘要翻译: 本发明涉及一种用于产生具有至少一个方向特征的输出照明的照明装置。 照明装置包括至少一个发光装置和设置在发光装置的光路中的至少一个光学元件。 照明装置还包括用于改变穿过其中的光的至少一种物理特性的屏幕状构件和用于在屏幕状构件上产生中间图像的光学装置。 屏幕状构件和光学装置位于发光装置与投射中间图像的光学元件之间的光路中。

    OPTICAL DEVICE FOR SCANNING AN OPTICAL RECORD CARRIER
    6.
    发明公开
    OPTICAL DEVICE FOR SCANNING AN OPTICAL RECORD CARRIER 审中-公开
    光学装置进行扫描的光学记录介质

    公开(公告)号:EP1461807A2

    公开(公告)日:2004-09-29

    申请号:EP02788350.3

    申请日:2002-12-10

    IPC分类号: G11B7/135

    摘要: An optical device for scanning an optical record carrier (20) has a radiation source (25) that can emit two radiation beams of different wavelength along different optical paths (28, 29). The emitted radiation is focused on the record carrier and reflected back to a detection system (40). A beam combiner 43 is arranged in the optical path between the radiation source and the detection system for combining the two radiation beams on one optical path, thereby allowing the use of a single detection system for both radiation beams. The beam combiner includes a grating that passes one of the beams undiffracted and diffracts the other beam mainly in the first order. The profile of the grating lines show alternating slanting grooves and slanting lands.

    REWRITABLE DATA STORAGE MEDIUM
    10.
    发明公开
    REWRITABLE DATA STORAGE MEDIUM 有权
    RE记录数据存储介质

    公开(公告)号:EP1190419A2

    公开(公告)日:2002-03-27

    申请号:EP01915224.8

    申请日:2001-02-09

    IPC分类号: G11B11/00

    摘要: The rewritable data storage medium (1) has a rewritable recording layer (9) provided with a tracking structure (8). Said layer (9) has a data recording area (5). An erasable identification mark is present in an identification mark area (4, 4') other than the data recording area (5). The data recording area (5) has a first tracking structure (8'), whereas the identification mark area (4, 4') is substantially free from a tracking structure or has a second tracking structure (8') substantially different from the first tracking structure (8'). Thus erasure of the identification mark is practically impossible, because the location of the erasing spot of a recorder cannot be controlled precisely in radial direction.