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    • 33. 发明申请
    • OPTICAL SCANNING DEVICE
    • 光学扫描装置
    • US20090153841A1
    • 2009-06-18
    • US11573947
    • 2005-08-15
    • Wil OpheySjoerd StallingaPim Theo TuylsAntonius Hermanus Maria AkkermansBoris Skoric
    • Wil OpheySjoerd StallingaPim Theo TuylsAntonius Hermanus Maria AkkermansBoris Skoric
    • G06K9/74
    • H04L9/3278G07D7/003G07D7/121
    • An optical identifier (1) can be used as a Physical Unclonable Function for producing a speckle pattern, as a response, upon being challenged with a light beam, as a challenge. This property can be used for identification of the optical identifier or of an object attached thereto, for the authentication of an information carrier or for generation of transaction keys. Since the response obtained in response to given challenge is highly sensitive to the relative position of the optical identifier, light beam source and detector for the speckle pattern, this relative position has to be accurately adjusted to reliably obtain the same response to a given challenge. To this aim, an optical identifier is proposed having an alignment area (3) for splitting an incident beam into distinct beams (6, 7) which can be detected as alignment signals (10a, 10b, 10c, 10d) on a detector (8) and used for the monitoring and for the adjustment of said relative position.
    • 作为挑战,光学标识符(1)可以用作用于产生斑点图案作为响应的物理不可克隆功能,作为响应。 该属性可以用于识别光学标识符或附加到其上的对象,用于信息载体的认证或用于生成交易密钥。 由于响应于给定挑战而获得的响应对于光学标识符,用于散斑图案的光束源和检测器的相对位置高度敏感,所以必须精确地调整该相对位置以可靠地获得对给定挑战的相同响应。 为此目的,提出一种具有用于将入射光束分成不同光束(6,7)的对准区域(3)的光学识别器,其可以被检测为检测器(8)上的对准信号(10a,10b,10c,10d) )并用于监视和调整所述相对位置。
    • 34. 发明申请
    • Optical Scanning Device
    • 光学扫描装置
    • US20080186577A1
    • 2008-08-07
    • US11816745
    • 2006-02-13
    • Sjoerd Stallinga
    • Sjoerd Stallinga
    • G02B5/18
    • G11B7/1353G11B2007/0006
    • An optical scanning device for scanning different formats of optical record carrier. The device includes a first radiation source (16), a second radiation source (70) and a third radiation source (72) arranged to emit radiation beams having a predetermined first, second and third, different, wavelength. The device further includes a redirector (15) for redirecting the second and third radiation beams. The redirector (15) includes a diffraction structure arranged to redirect the second radiation beam from the second input optical path (48) along the second output optical path (50) and to redirect the third radiation beam from the third input optical path along the third output optical path, so as to improve the colinearity of the second and third output optical paths with respect to a first output optical path of the redirector.
    • 一种用于扫描不同格式的光学记录载体的光学扫描装置。 该装置包括第一辐射源(16),第二辐射源(70)和第三辐射源(72),第三辐射源被布置成发射具有预定的第一,第二和第三不同波长的辐射束。 该装置还包括用于重定向第二和第三辐射束的重定向器(15)。 重定向器(15)包括衍射结构,其被布置成沿着第二输出光路(50)重定向来自第二输入光路(48)的第二辐射束,并且将来自第三输入光路的第三辐射束沿第三 输出光路,从而提高第二和第三输出光路相对于重定向器的第一输出光路的共线性。
    • 36. 发明申请
    • Method and apparatus for detection of a speckle based physically unclonable function
    • 用于检测基于散斑的物理不可克隆功能的方法和装置
    • US20070090312A1
    • 2007-04-26
    • US10582383
    • 2004-11-24
    • Sjoerd StallingaBoris SkoricPim TuylsWillem OpheyAntonius Akkermans
    • Sjoerd StallingaBoris SkoricPim TuylsWillem OpheyAntonius Akkermans
    • G03C5/16
    • G02B27/48H04L9/3278
    • An optical arrangement of at least a coherent light source (1), a strongly scattering object (5) (the PUF), and a pixe-lated photo-detector (6), wherein the pixels are comparable in size with the bright and dark patches of the speckle pattern produced by coherent radiation traversing the scattering object (5). Quantitively, the pixel size should be roughly λ/NA, where λ is the wave-length, and (i) NA=a/z for free-space geometry, with a being the beam radius and z being the distance between the exit surface of the PUF (5) and the pixelated detector (6), or (ii) NA is the numerical aperture of a lens (7) in an imaging geometry. In a preferred embodiment of the invention, there are tentative requirements that the pixels should be at least smaller than ηmaxλNA and preferably larger than ηmaxλ/NA, where (in an exemplary embodiment) ηmax=5 and ηmin=0.05, say. It will be understood by a person skilled in the art that the present invention is concerned with the optical arrangement of the PUF (5) and the photo-detector (6), rather than the photo -detector (6) per se.
    • 至少相干光源(1),强散射物体(5)(PUF)和像素照片检测器(6)的光学布置,其中像素在尺寸上与明暗相当 通过穿过散射物体(5)的相干辐射产生的斑点图案的斑块。 数量上,像素尺寸应该大致为λ/ NA,其中λ是波长,和(i)NA =自由空间几何的a / z,其中光束半径和z是出射表面之间的距离 的PUF(5)和像素化检测器(6),或者(ii)NA是成像几何形状中的透镜(7)的数值孔径。 在本发明的优选实施例中,暂时要求像素应该至少小于λmaxλNA,并且优选地大于等于λmax /λ,其中( 在一个示例性实施例中),例如,max = 5和eta分钟= 0.05。 本领域技术人员将理解,本发明涉及PUF(5)和光电检测器(6)的光学布置,而不是光电检测器(6)本身。
    • 37. 发明申请
    • Optical pickup apparatus
    • 光拾取装置
    • US20060114775A1
    • 2006-06-01
    • US10538619
    • 2003-12-05
    • Sjoerd Stallinga
    • Sjoerd Stallinga
    • G11B7/00
    • G11B7/1353G11B7/0901G11B7/1381
    • The invention relates to an optical pickup apparatus comprising a photodetector (302) which comprises a first segment (A) and a second segment (B), and an optical element (301) intended to receive an incident light beam, said optical element (301) comprising:—a first portion (L) comprising diffraction means for generating a first 0th diffraction order light beam (A(0)) on said first segment (A), and a first non-0th diffraction order light beam (B(+1)) on said second segment (B),—a second portion (R) comprising diffraction means for generating a second 0th diffraction order light beam (B(0)) on said second segment (B), and a second non-0th diffraction order light beam (A(+1)) on said first segment (A) Use: Optical pickup apparatus
    • 本发明涉及一种包括光电检测器(302)的光学拾取装置,该光检测器包括第一段(A)和第二段(B),以及用于接收入射光束的光学元件(301),所述光学元件 )包括:第一部分(L),包括用于在所述第一段(A)上产生第一第0衍射级光束(A(0))的衍射装置,以及第一非第0衍射级光束(B(+ 1)), - 第二部分(R),包括用于在所述第二部分(B)上产生第二第0衍射级光束(B(0))的衍射装置,以及第二非零部分 所述第一段(A)上的衍射级光束(A(+1))使用:光学拾取装置
    • 38. 发明申请
    • Tracking system and method
    • 跟踪系统和方法
    • US20050265153A1
    • 2005-12-01
    • US10525135
    • 2003-08-05
    • Sjoerd StallingaMaarten KuijperAalbert Stek
    • Sjoerd StallingaMaarten KuijperAalbert Stek
    • G11B7/085G11B7/09G11B7/095G11B7/00
    • G11B7/08517G11B7/0901G11B7/094G11B7/095
    • Tracking system for guiding an optical beam on tracks on an optical disc, said tracking system comprising a photodetector (A1, A2) for detecting optical beams derived from said optical beam, said photodetector generating a first output signal (A) and a second output signal (B), said tracking system comprising first processing means for generating a first differential signal (PP(DC)) corresponding to the low-frequency part of a difference between said first and second output signals. The tracking system comprises second processing means for generating a tracking error signal (PP(AC/DC)) defined by the addition of said first differential signal (PP(DC)) to a second differential signal (PP′(AC)), said second differential signal corresponding to a fraction of the difference in amplitude of the high-frequency components of said first and second output signals. Use: Optical disc player/writer.
    • 用于在光盘上的轨道上引导光束的跟踪系统,所述跟踪系统包括用于检测从所述光束导出的光束的光电检测器(A1,A2),所述光电检测器产生第一输出信号(A)和第二输出信号 (B),所述跟踪系统包括用于产生与所述第一和第二输出信号之间的差的低频部分相对应的第一差分信号(PP(DC))的第一处理装置。 跟踪系统包括第二处理装置,用于产生通过将第一差分信号(PP(DC))加到第二差分信号(PP'(AC))而定义的跟踪误差信号(PP(AC / DC)), 第二差分信号对应于所述第一和第二输出信号的高频分量的振幅差的一部分。 使用:光盘播放器/写入器。
    • 39. 发明申请
    • Dual stack optical data storage medium and use of such medium
    • 双栈光数据存储介质和这种介质的使用
    • US20050207326A1
    • 2005-09-22
    • US10517472
    • 2003-06-11
    • Joachim HellmigAndrei MijiritskiiTeunis TukkerSjoerd Stallinga
    • Joachim HellmigAndrei MijiritskiiTeunis TukkerSjoerd Stallinga
    • G11B7/24038G11B7/241G11B7/26
    • G11B7/24038
    • 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.
    • 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。
    • 40. 发明授权
    • High contrast polarizing optics for a color electro-optic display device
    • 用于彩色电光显示装置的高对比度偏光光学装置
    • US06563551B1
    • 2003-05-13
    • US09605951
    • 2000-06-28
    • Peter J. JanssenSjoerd Stallinga
    • Peter J. JanssenSjoerd Stallinga
    • H04N931
    • H04N9/3117H04N5/7441
    • A projection-type color image display system uses a reflective liquid crystal (LC) light modulator (24) and a polarizing beam-splitter (22) for separating the incoming and reflected light. Light from the source arrives on a first axis (28) and is reflected outward, with the imposed image, along a second axis (30) through a projection lens (26). In order to produce a high contrast image, a pre-polarizer (36, 42, 48) and/or post-polarizer (44, 50) are used to restore the selectivity and, consequently, optical system contrast for the wide “cone of acceptance” of light rays which are common in projection systems. In order to improve the system contrast, the pre- and/or post-polarizer is arranged along the first and second axis, respectively, with its polarizer absorbing axis extending parallel to the normal n of the reflective surface (34, 46) of the PBS.
    • 投影型彩色图像显示系统使用反射型液晶(LC)光调制器(24)和用于分离入射光和反射光的偏振光束分离器(22)。 来自光源的光线通过投影透镜(26)沿着第二轴线(30)到达第一轴线(28)并被施加的图像向外反射。 为了产生高对比度图像,使用预偏振器(36,42,48)和/或后偏振器(44,50)来恢复选择性,并因此恢复光学系统的对比度 接受“投影系统中常见的光线。 为了改善系统对比度,预偏振器和/或后偏振器分别沿着第一和第二轴布置,其偏振器吸收轴平行于反射表面(34,46)的法线n延伸, PBS。