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1.发明授权
公开(公告)号：US5349400A
公开(公告)日：1994-09-20
申请号：US64164
申请日：1993-05-27
摘要： Back-projection display system including a screen which can be moved away from or, conversely, placed up against a support such as a wall, for example. A projector located at some distance away, on the ceiling for example, illuminates a back-projection mirror located at 45.degree. in relation to the illumination beam and in relation to the screen. The back-projection mirror itself is also articulated. In addition, the mirror may be made in the form of a holographic mirror.
摘要翻译： PCT No.PCT / FR91 / 00952 Sec。 371日期：1993年5月27日 102（e）日期1993年5月27日PCT 1990年11月29日PCT PCT。 第WO92 / 09918号公报 日期：1992年6月11日。背投投影显示系统，其包括可以远离或相反地放置在诸如墙壁的支撑件上的屏幕。 位于天花板一定距离处的投影仪照亮位于相对于照明光束并相对于屏幕的45°的背投影镜。 后投影镜本身也铰接。 此外，镜子可以以全息镜的形式制成。
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2.发明申请公开(公告)号：US20090013776A1
公开(公告)日：2009-01-15
申请号：US12055696
申请日：2008-03-26
CPC分类号： G01W1/00 , G01W2001/003
摘要： The invention relates to a method of protecting aircraft in flight against clear air turbulence (CAT). Consider an aircraft occupying a position P and moving horizontally at a speed V, a plane PH0 being the horizontal plane passing through P. According to the invention, the method includes performing at least one pair of evaluations of air temperature TB, TC at two points B, C which have positions that are symmetrical relative to the plane PH0. At least one pair of horizontal air speed evaluations are performed VHB, VHC at the two points B, C; An air temperature gradient is determined; A horizontal air speed gradient is determined; An index signifying a presence of CAT is determined; The preceding steps are repeated; A trend is analyzed over time of the index.
摘要翻译： 本发明涉及一种在飞行中保护飞机免受空气湍流（CAT）的保护的方法。 考虑占据位置P并以速度V水平移动的飞行器，平面PH0是通过P的水平面。根据本发明，该方法包括在两点执行至少一对空气温度TB，TC的评估 B，C具有相对于平面PH0对称的位置。 在两点B，C处执行至少一对水平空气速度评估VHB，VHC; 确定空气温度梯度; 确定水平空气速度梯度; 确定表示CAT存在的指标; 重复上述步骤; 随着时间的推移分析了这一趋势。
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3.发明授权Radial control method for a device for reproducing information of an optical disk, and reproduction device for carrying out said method 失效用于再现光盘信息的装置的径向控制方法，以及用于执行所述方法的再现装置公开(公告)号：US07460456B2
公开(公告)日：2008-12-02
申请号：US10510201
申请日：2003-03-25
IPC分类号： G11B7/00
CPC分类号： G11B7/0906
摘要： The invention relates to a radial slaving method and to a reproduction device implementing it for optical discs.In an optical head of a conventional reproduction device using a four-quadrant detector with four photodiode is distributed on either side of a direction parallel to the axis of the track, the individual signals of the photodiodes (d1 to d4) are combined in order to obtain read signals along the two diagonals (diag1, diag2) by subtraction (21, 22).A phase comparison signal circuit (100) makes it possible to construct a radial error signal (Sr) by measuring the phase shift of the diagonal read signals.The invention applies in particular to phase discs with slightly phase-shifting marks.
摘要翻译： 本发明涉及一种径向从动方法和一种实现光盘的再现装置。 在使用具有四个光电二极管的四象限检测器的常规再现装置的光头中分布在与轨道的轴平行的方向的任一侧上，将光电二极管（d1至d4）的各个信号合并，以便 通过减法获得沿着两个对角线（diag1，diag2）的读取信号（21,22）。 相位比较信号电路（100）可以通过测量对角线读信号的相移来构造径向误差信号（Sr）。 本发明特别适用于具有轻微相移标记的相位盘。
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4.发明授权Medium for recording optically readable data, method for making same and optical system reproducing said data 有权用于记录光学可读数据的介质，其制造方法以及再现所述数据的光学系统公开(公告)号：US07149173B2
公开(公告)日：2006-12-12
申请号：US10399038
申请日：2001-10-17
申请人： Jean-Claude Lehureau
发明人： Jean-Claude Lehureau
CPC分类号： G11B7/24038 , G11B7/005 , G11B7/263 , G11B2007/0013
摘要： The invention concerns a recording medium for optically readable data of the multilayer type, a method for making same and an optical system for reproducing said data for reading the medium.The medium (Sb) comprises a stack of layers (C1 to CN) whereof the interfaces constitute planes (P1 to PN) bearing slightly phase-shifting information elements. Said planes generate a relatively significant disturbance of the transmitted beam while diffracting only a very small part of the light passing through them. The reading beam (FI) is focused on the bearing plane and reading is performed by transmission. The disturbances caused by the neighboring defocused layers are eliminated by far field detection of only the low spatial frequencies in the transmitted beam.The invention is particularly useful for very high capacity data optical storage.
摘要翻译： 本发明涉及一种用于多层型光学可读数据的记录介质，其制造方法以及用于再现用于读介质的数据的光学系统。 介质（Sb）包括层（C 1至CN）的堆叠，其中接口构成具有轻微相移信息元素的平面（P 1至PN）。 所述平面对透射光束产生相对显着的干扰，同时仅衍射通过它们的极小部分光。 读取光束（FI）聚焦在轴承平面上，并通过传输进行读取。 由相邻散焦层引起的干扰通过仅在发射波束中的低空间频率的远场检测来消除。 本发明对于非常高容量的数据光学存储特别有用。
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5.发明申请Radial control method for a device for reproducing information of an optical disk, and reproduction device for carrying out said method 失效用于再现光盘信息的装置的径向控制方法，以及用于执行所述方法的再现装置公开(公告)号：US20060062097A1
公开(公告)日：2006-03-23
申请号：US10510201
申请日：2003-03-25
IPC分类号： G11B7/00
CPC分类号： G11B7/0906
摘要： The invention relates to a radial slaving method and to a reproduction device implementing it for optical discs. In an optical head of a conventional reproduction device using a four-quadrant detector with four photodiode is distributed on either side of a direction parallel to the axis of the track, the individual signals of the photodiodes (d1 to d4) are combined in order to obtain read signals along the two diagonals (diag1, diag2) by subtraction (21, 22). A phase comparison signal circuit (100) makes it possible to construct a radial error signal (Sr) by measuring the phase shift of the diagonal read signals. The invention applies in particular to phase discs with slightly phase-shifting marks.
摘要翻译： 本发明涉及一种径向从动方法和一种实现光盘的再现装置。
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公开(公告)号：US06778669B1
公开(公告)日：2004-08-17
申请号：US09448453
申请日：1999-11-24
申请人： Jean-Claude Lehureau
发明人： Jean-Claude Lehureau
IPC分类号： H04K100
CPC分类号： H04L9/0852 , H04L2209/08
摘要： A quantum encryption device comprises a transmitter and a receiver between which an encrypted piece of information is transmitted. The transmitter comprises at least means to send a first packet of photons and an information photon to the receiver, the appearance of the information photon following the packet being lagged by a period of time &tgr; according to a law of probability. The transmitter also comprises means for the encoding of the information photon. The receiver comprises at least means for the encoding of a second packet of photons coming from the first packet and substantially lagged by the period of time &tgr; with respect to this packet, and interference means to make an information photon interfere with the second packet of photons. These interference means provide a packet of photons to create a quantity of photons substantially equal to ±2 times the variance of the noise due to the second packet. The invention can be applied to the industrial-scale making of encryption systems.
摘要翻译： 量子加密装置包括发送器和接收器，在该接收器之间发送加密的信息。 发射机包括至少将光子的第一分组和信息光子发送到接收机的装置，根据概率定律，在分组滞后一段时间τ之后的信息光子的出现。 发射机还包括用于编码信息光子的装置。 接收机包括至少用于编码来自第一分组的光子的第二分组并且相对于该分组基本上滞后于时间τ的装置，并且使信号光子干扰第二光子分组的干扰 。 这些干扰意味着提供一个光子分组，以产生基本上等于由于第二分组引起的噪声变化的±2倍的光子的量。 本发明可应用于加密系统的工业规模化。
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公开(公告)号：US06577561B2
公开(公告)日：2003-06-10
申请号：US09308255
申请日：1999-05-25
IPC分类号： G11B7085
CPC分类号： G11B23/281 , G11B7/007 , G11B20/00086 , G11B20/00586 , G11B20/00601
摘要： An anti-piracy recording disk. The disk includes a main recording track which has interruptions or changes of turn. This gives rise to non-sequential reading and therefore to information which is difficult to access. The copying of such a disk by conventional means is very difficult making it possible to easily detect counterfeits or to render any copy unusable.
摘要翻译： 防盗版录像盘。 磁盘包括具有中断或转弯变化的主记录磁道。 这导致非顺序读取，因此导致难以访问的信息。 通过常规方式复制这种盘是非常困难的，使得可以容易地检测到伪造品或使任何副本不可用。
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公开(公告)号：US06288805B1
公开(公告)日：2001-09-11
申请号：US08596135
申请日：1996-02-15
IPC分类号： G03H100
CPC分类号： G03B21/60 , G02B5/32 , G03B21/62 , G03H1/0256
摘要： A holographic projection screen for large screen projection and back projection with a liquid crystal projector. The screen includes at least one layer made of a photosensitive material in which at least one index grating may be recorded by an interference of an optical recording wave with an optical object wave. The thickness of the layer is equal to or greater than n0&Lgr;2/2&pgr;, where n0 is the average index of the photosensitive material, &Lgr; is the average spacing of the index grating and &lgr; is the recording wavelength.
摘要翻译： 一种用于大屏幕投影和背投的全息投影屏幕，配有液晶投影机。 该屏幕包括至少一层由光敏材料制成的层，其中至少一个折射光栅可通过光学记录波与光学物体波的干涉被记录。 层的厚度等于或大于n0LAMBD2 / 2pi，其中n0是感光材料的平均折射率，LAMBD是折射率光栅的平均间距，lambd是记录波长。
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公开(公告)号：US4203133A
公开(公告)日：1980-05-13
申请号：US673057
申请日：1976-04-02
CPC分类号： G11B7/0917
摘要： The present invention relates to the reading out of a track by means of a light spot which scans a track along which the information contained in a record is transcribed. The object of the invention is a read-out system which ensured focussing and tracking by the synchronous detection of positional errors with the help of a read-out beam one of the halves of which is intercepted by a half-wave plate; an oscillatory motion is imparted to the read-out spot in the plane containing the track.
摘要翻译： 本发明涉及通过扫描记录在记录中的信息的轨迹的光点来读出轨迹。 本发明的目的是一种读出系统，其通过借助于其半部被半波片截取的读出光束，通过同步检测位置误差来确保聚焦和跟踪; 在包含轨道的平面中的读出光点赋予振荡运动。
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公开(公告)号：US4079247A
公开(公告)日：1978-03-14
申请号：US684355
申请日：1976-05-07
CPC分类号： G02B27/40 , G11B7/0909 , G11B7/13
摘要： A device for focussing a read-out light beam on a moving data carrier. It comprises an objective lens which causes said read-out beam to converge on the data carrier; a cylindrical lens arranged in the path of a light beam reflected by the data carrier; and photo-electric means for detecting the reflected beam and arranged in such a fashion that the light spot obtained there, normally substantially circular in shape, is distorted by elongation if focussing of the read-out beam on the data carrier is incorrect.
摘要翻译： 用于将读出光束聚焦在移动数据载体上的装置。 它包括使所述读出光束会聚在数据载体上的物镜; 布置在由数据载体反射的光束的路径中的柱面透镜; 以及光电装置，用于检测反射光束并且以这样的方式布置，使得通常在其上形成的大致圆形形状的光斑由于读出光束在数据载体上的聚焦不正确而被伸长变形。
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