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公开(公告)号：US06595644B2
公开(公告)日：2003-07-22
申请号：US09924141
申请日：2001-08-07
IPC分类号： G03B2100
CPC分类号： G03B21/56
摘要： A dynamic time multiplexed holographic system including a holographic screen and a projector that projects successive perspective images onto the holographic screen. The projector includes a rotating polygon that provides successive image slices to the holographic screen and a spatial light modulator that provides successive image slices to the rotating polygon. The holographic screen refracts the successive perspective images perpendicular to the holographic screen.
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12.发明授权公开(公告)号：US06272130B1
公开(公告)日：2001-08-07
申请号：US09008849
申请日：1998-01-19
申请人： Allen Panahi , Freddie Lin , Tomasz P. Jannson
发明人： Allen Panahi , Freddie Lin , Tomasz P. Jannson
IPC分类号： H04L1250
CPC分类号： H04J3/1605 , H04J3/08
摘要： Systems and methods for time division multiplexing are described. A time division multiplexer-demultiplexer system includes I) a signal transmitting system for transmittal of a serialized signal including A) latency free continuous data and B) at least one member selected from the group consisting of bursty data and packetized data, the signal transmitting system including a multiplexer and a timing control block; and II) a signal receiving system for reception of the signal without disrupting the laminarity of the latency free continuous data, the signal receiving system including a demultiplexer and a sequence detector. The systems and methods provide advantages in that continuous data can be simultaneously transmitted with bursty data and/or packetized data on the same tie line without disrupting the laminarity of the continuous data.
摘要翻译： 描述了用于时分复用的系统和方法。 时分多路复用器 - 解复用器系统包括：I）用于发送串行化信号的信号发送系统，包括A）无延迟连续数据，B）从由突发数据和分组化数据组成的组中选择的至少一个成员，信号发送系统 包括多路复用器和定时控制块; 和II）用于接收信号的信号接收系统，而不中断无延迟连续数据的层叠，信号接收系统包括解复用器和序列检测器。 这些系统和方法提供了优点，即连续数据可以在同一条连线上同时以突发数据和/或打包数据同时发送，而不会中断连续数据的叠加。
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13.发明授权Method of isomorphic singular manifold projection and still/video imagery compression 失效同构奇异歧管投影和静止/视频图像压缩方法
公开(公告)号：US06167155A
公开(公告)日：2000-12-26
申请号：US901832
申请日：1997-07-28
CPC分类号： G06T9/001
摘要： Methods and apparatuses for still image compression, video compression and automatic target recognition are disclosed. The method of still image compression uses isomorphic singular manifold projection whereby surfaces of objects having singular manifold representations are represented by best match canonical polynomials to arrive at a model representation. The model representation is compared with the original representation to arrive at a difference. If the difference exceeds a predetermined threshold, the difference data are saved and compressed using standard lossy compression. The coefficients from the best match polynomial together with the difference data, if any, are then compressed using lossless compression. The method of motion estimation for enhanced video compression sends I frames on an "as-needed" basis, based on comparing the error between segments of a current frame and a predicted frame. If the error exceeds a predetermined threshold, which can be based on program content, the next frame sent will be an I frame. The method of automatic target recognition (ATR) including tracking, zooming, and image enhancement, uses isomorphic singular manifold projection to separate texture and sculpture portions of an image. Soft ATR is then used on the sculptured portion and hard ATR is used on the texture portion.
摘要翻译： 公开了用于静止图像压缩，视频压缩和自动目标识别的方法和装置。 静止图像压缩的方法使用同构奇异歧管投影，其中具有奇异歧管表示的对象的表面由最佳匹配规范多项式表示以得到模型表示。 将模型表示与原始表示进行比较以获得差异。 如果差超过预定阈值，则使用标准有损压缩来保存和压缩差分数据。 然后使用无损压缩来压缩来自最佳匹配多项式的系数以及差分数据（如果有的话）。 基于比较当前帧的段和预测帧之间的误差，增强视频压缩的运动估计方法在“根据需要”的基础上发送I帧。 如果错误超过可以基于节目内容的预定阈值，则发送的下一帧将是I帧。 包括跟踪，缩放和图像增强的自动目标识别（ATR）的方法使用同构奇异歧管投影来分离图像的纹理和雕塑部分。 然后在雕刻部分使用软ATR，并在纹理部分使用硬质ATR。
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公开(公告)号：US5305123A
公开(公告)日：1994-04-19
申请号：US818805
申请日：1992-01-09
CPC分类号： G03H5/00 , G02B5/32 , G02F1/293 , G02F2203/12 , G03H2222/16 , G03H2225/25 , G03H2225/34 , G03H2225/52
摘要： A 2D/3D optically controlled spatial and angular electromagnetic wave modulator is disclosed. The modulator of the present invention modulates the amplitude and direction of an electromagnetic wave such as millimeter microwaves or infrared waves by diffracting or scattering the electromagnetic wave from a semiconductor material upon which is incident a controlling lightwave. The lightwave incident upon the semiconductor is of varying intensity, and may be time varying, and changes the complex refractive permittivity of the semiconductor material. The electromagnetic wave is thus modulated in accordance with the controlling lightwave.
摘要翻译： 公开了一种2D / 3D光学控制的空间和角度电磁波调制器。 本发明的调制器通过衍射或散射来自控制光波的半导体材料的电磁波来调制诸如毫米波或红外波之类的电磁波的振幅和方向。 入射到半导体上的光波具有不同的强度，并且可能是时变的，并且改变了半导体材料的复折射率。 因此，电磁波根据控制光波进行调制。
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公开(公告)号：US5278687A
公开(公告)日：1994-01-11
申请号：US681128
申请日：1991-04-05
摘要： An optical multi-channel data communication link transmits data from a transmitter to a remote receiver. The link includes a multimode laser diode source connected to the transmitter, a device for modulating the source with each channel of data to generate a modulated light wave, and a wavelength division multiplexing device at the transmitter. The wavelength division multiplexing device has paraxial optics for multiplexing the light waves to produce a multiplexed signal. Multimode fiber optic means are connected to the multiplexer and pass the multiplexed signal to the remote receiver. A wavelength division multiplexer has paraxial optics for demultiplexing the multiplexed signals at the receiver to produce demultiplexed light waves. Each of the demultiplexed light waves are converted for use by the receiver. Preferably, each of the wavelength division multiplexer and demultiplexer has a littrow reflecting grating and a lens which are paraxially aligned with the multimode fiber optic means to provide channel separation of less than 50 nm.
摘要翻译： 光学多通道数据通信链路将数据从发射机发射到远程接收机。 该链路包括连接到发射机的多模激光二极管源，用于利用每个数据通道调制源的装置以产生调制的光波，以及在发射器处的波分复用装置。 波分复用装置具有用于多路复用光波以产生复用信号的近轴光学器件。 多模光纤装置连接到多路复用器，并将复用的信号传递给远程接收器。 波分复用器具有近轴光学器件，用于在接收器处对多路复用信号进行解复用以产生解复用的光波。 每个解复用的光波被转换以供接收机使用。 优选地，波分多路复用器和解复用器中的每一个具有随机反射光栅和与多模光纤装置对准的透镜，以提供小于50nm的通道间隔。
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公开(公告)号：US6130730A
公开(公告)日：2000-10-10
申请号：US193584
申请日：1998-11-17
IPC分类号： F21V8/00 , G02B6/00 , G02F1/13357 , G02F1/1335
CPC分类号： G02B6/0038 , G02B6/0018 , G02B6/0031 , G02B6/0036 , G02B6/0061 , G02F1/133615 , G02F2001/133607
摘要： Systems and methods for providing an LGD with a collimated backlight and a non-Lambertian diffuser are described. An LCD system includes: an illumination source for producing light; a collimating waveguide optically connected to the illumination source, the collimating waveguide including a top surface, an incident end and a plurality of substantially parallel optical elements for redirecting light from the incident end to, and through, the top surface by total internal reflection (TR), each of the plurality of substantially parallel optical elements including a first facet that is nonparallel to the top surface and a mirrored second facet that is nonparallel to the top surface; a reflector optically connected to the light source and optically connected to the collimating waveguide, the reflector (1) at least partially surrounding the illumination source, and (2) reflecting light from said illumination source to said incident end by direct reflection; a liquid crystal display optically connected to the collimating waveguide; and a non-Lambertian diffuser optically connected to the liquid crystal display for directing light from said liquid crystal display. The light from the reflector is directly incident upon the incident end. The systems and methods provide advantages in that the light from the LCD is bright and homogenous.
摘要翻译： 描述了提供具有准直背光和非朗伯扩散器的LGD的系统和方法。 LCD系统包括：用于产生光的照明源; 光学连接到照明源的准直波导，准直波导包括顶表面，入射端和多个基本上平行的光学元件，用于通过全内反射（TR）将来自入射端的光重新定向并通过顶表面 ），所述多个基本上平行的光学元件中的每一个包括不平行于所述顶表面的第一小面和不平行于所述顶表面的镜像第二小面; 光学连接到光源并光学地连接到准直波导的反射器，反射器（1）至少部分地围绕照明源，以及（2）通过直接反射将来自所述照明源的光反射到所述入射端; 光学连接到准直波导的液晶显示器; 以及与所述液晶显示器光学连接的非朗伯扩散器，用于引导来自所述液晶显示器的光。 来自反射器的光直接发生在事件端。 该系统和方法提供了优点，因为来自LCD的光是明亮和均匀的。
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公开(公告)号：US5886675A
公开(公告)日：1999-03-23
申请号：US498423
申请日：1995-07-05
CPC分类号： G09G3/003 , G02B27/225 , G03H1/26 , G09G3/002 , G03H1/0486
摘要： An autostereoscopic display system including: I) image signal electronics; II) a first projector including: A) a first light source 33; B) a first spatial light modulator 35 optically connected to said first light source and electrically connected to said image signal electronics; and C) a first image delivery system optically connected to said first spatial light modulator; III) a second projector connected to said first projector, said second projector including: A) a second light source 34; B) a second spatial light modulator 36 optically connected to said second light source and electrically connected to said image signal electronics; and C) a second image delivery system optically connected to said second spatial light modulator; IV) a fan-out multiplexer 39 optically connected to both said first image delivery system and said second image delivery system, said fan-out multiplexer being characterized by a viewing zone period and a viewing region period; and V) a binary head tracker 40 electrically connected to said image signal electronics, said binary head tracker including a camera 42 and a circuit board. The system provides the capability for real-time autostereoscopic display together with an impressive look-around feature.
摘要翻译： 一种自动立体显示系统，包括：I）图像信号电子; II）第一投影仪，包括：A）第一光源33; B）第一空间光调制器35，其光学连接到所述第一光源并电连接到所述图像信号电子器件; 和C）与所述第一空间光调制器光学连接的第一图像传送系统; III）连接到所述第一投影仪的第二投影仪，所述第二投影仪包括：A）第二光源34; B）第二空间光调制器36，其光学连接到所述第二光源并电连接到所述图像信号电子器件; 和C）与所述第二空间光调制器光学连接的第二图像传送系统; IV）与所述第一图像传送系统和所述第二图像传送系统光学连接的扇出多路复用器39，所述扇出多路复用器的特征在于观看区域周期和观看区域周期; 和V）电连接到所述图像信号电子装置的二进制头跟踪器40，所述二进制头跟踪器包括相机42和电路板。 该系统提供实时自动立体显示功能，以及令人印象深刻的环绕功能。
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公开(公告)号：US5221957A
公开(公告)日：1993-06-22
申请号：US901514
申请日：1992-06-19
CPC分类号： G01J3/1838 , G02B5/32
摘要： A holographic filter comprises a volume hologram recorded with Bragg surfaces for use in spectroscopic and spectral splitting applications. The Bragg planes in the holographic filter can be recorded to satisfy virtually any design constraint imposed upon the filter such as Raman, Lippmann, non-Snellian (slanted), curved, and multiplexed spectral filters. The holographic filter achieves maximal reduction of secondary maxima and sidelobes and obtains large wavelength selectivities, and varied grating constants.
摘要翻译： 全息滤光器包括记录有用于光谱和光谱分离应用的布拉格表面的体积全息图。 可以记录全息滤光器中的布拉格平面，以满足实际上对滤光器的任何设计约束，例如拉曼，Lippmann，非Snellian（倾斜），弯曲和多路复用光谱滤波器。 全息滤光片可以实现二次最大值和旁瓣的最大减少，并获得较大的波长选择性和不同的光栅常数。
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公开(公告)号：US5018814A
公开(公告)日：1991-05-28
申请号：US479451
申请日：1990-02-13
CPC分类号： G02B6/30 , G02B6/2821 , G02B6/283 , G02B6/34 , G02B6/42
摘要： An apparatus for coupling light waves into a single-mode planar waveguide comprises a curved multi-mode waveguide. The multi-mode waveguide is thick so that its mode structure is practically continuous and its coupling wavelength selectivity is low. The curved multi-mode waveguide presents a variable single-mode coupling gap to the adjacent single-mode planar waveguide which achieves optimum balance between phase and amplitude conditions for coupling a broad range of wavelengths and tolerates varying wavelength light sources.
摘要翻译： 用于将光波耦合到单模平面波导中的装置包括弯曲多模波导。 多模波导是厚的，使得其模式结构实际上是连续的，并且其耦合波长选择性低。 弯曲的多模波导为相邻的单模平面波导提供了可变的单模耦合间隙，其实现相位和幅度条件之间的最佳平衡，以耦合宽范围的波长并且容许变化的波长光源。
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公开(公告)号：US4958892A
公开(公告)日：1990-09-25
申请号：US259304
申请日：1988-10-18
CPC分类号： G02B5/288 , G02B5/32 , Y10S359/90
摘要： A diffraction coherence filter based on Bragg interference principles comprises a plurality of spaced-apart lower-hierarchy optical elements, containing a series of interference structures, which form a higher-hierarchy compound optical structure. The spatial distribution of the lower-hierarchy optical element and the interference structures is governed by mathematical relationships dependent upon the coherence radius and temporal coherence length of incoming radiation. All of the lower-hierarchy elements can be coherently coupled for coherent light and randomly coupled for incoherent light, whereby the filter may differentiate between coherent and incoherent radiation.
摘要翻译： 基于布拉格干涉原理的衍射相干滤波器包括多个间隔开的下层光学元件，其包含一系列干涉结构，其形成较高层次的复合光学结构。 低层光学元件和干涉结构的空间分布由取决于入射辐射的相干半径和时间相干长度的数学关系来决定。 所有的低层次元素可以被相干地耦合到相干光并且随机耦合用于非相干光，由此滤光器可以区分相干和非相干辐射。
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