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    • 4. 发明授权
    • Waveguide optical pick-up head using mach-zehnder interferometer
wavefront sensor apparatus and method
    • 波导光学拾波头采用Mach-Zehnder干涉仪波前传感器装置及方法
    • US5390157A
    • 1995-02-14
    • US913579
    • 1992-07-15
    • Joseph F. Revelli, Jr.
    • Joseph F. Revelli, Jr.
    • G02B7/00G11B7/12G11B7/135
    • G11B7/1245
    • An integrated optic head contains a planar and a channel waveguide, a waveguide condensing lens, and integrated waveguide photodetectors. The main portion of the beam returning from the disk is focused by the lens onto an integrated waveguide photodetector to provide the data signal. A smaller portion of the beam is sampled by channel waveguide Mach-Zehnder (MZ) interferometers that measure the beam wavefront curvature to provide the focus error signal (FES). Additional channel waveguides provide reference signals for the interferometers and provide a means of measuring the tracking error signal (TES). The TES method includes subtracting light detected by one channel waveguide detector from light detected by another, which difference is the tracking error. The FES method includes obtaining the difference in the ratios of the light emanating from two interferometers divided by the light emanating from their respective channel waveguides, which difference in ratios is the focus error.
    • 集成光学头包含平面和沟道波导,波导聚焦透镜和集成波导光电探测器。 从光盘返回的光束的主要部分被透镜聚焦到集成波导光电检测器上以提供数据信号。 光束的较小部分由测量光束波前曲率以提供聚焦误差信号(FES)的通道波导马赫 - 曾德(MZ)干涉仪采样。 附加通道波导为干涉仪提供参考信号,并提供测量跟踪误差信号(TES)的方法。 TES方法包括从由一个波导检测器检测的光中减去由另一个波导检测的光,该差是跟踪误差。 FES方法包括获得从两个干涉仪发出的光的比值除以它们各自的通道波导发出的光的差异,该比率的差是焦点误差。
    • 6. 发明授权
    • Integrated electro-optical scanner with photoconductive substrate
    • 集成光电扫描仪,带光导基板
    • US5093874A
    • 1992-03-03
    • US678486
    • 1991-04-01
    • Gilbert A. HawkinsJoseph F. RevelliDavid J. Williams
    • Gilbert A. HawkinsJoseph F. RevelliDavid J. Williams
    • G02B6/12G02F1/065G02F1/295
    • G02F1/065G02B6/12004G02F1/2955
    • A fully integrated electro-optic page-scanner comprises an optically transparent waveguide made from an electro-optic polymer, and an electrode structure including a linear array of electrically-addressable, spaced, parallel electrodes for selectively altering the refractive index across pixel-sized portions of the polymeric waveguide. According to the invention, the addressable electrodes are disposed on a photoconductive substrate which facilitates poling of the polymer waveguide to rander it electro-optic in nature. During the poling process, the photoconductive substrate is made electrically conductive by flood illumination, while a uniform electric field is established between the substrate and a transparent electrode which overlies the waveguide layer, opposite the addressable electrodes. Preferably, the photoconductive substrate comprises undoped silicon which enables certain electrode-addressing circuitry to be integrated within the scanner structure.
    • 完全集成的电光寻像扫描器包括由电光聚合物制成的光学透明波导,以及包括电可寻址,间隔开的平行电极的线性阵列的电极结构,用于选择性地改变穿过像素尺寸部分的折射率 的聚合物波导。 根据本发明,可寻址电极设置在光电导基板上,其有利于聚合物波导的极化,从而将光电性质放在其上。 在极化过程中,通过泛光照明使感光基板导电,同时在衬底和覆盖波导层的透明电极之间建立均匀的电场,与可寻址电极相对。 优选地,光导基板包括未掺杂的硅,其使得某些电极寻址电路能够集成在扫描器结构内。
    • 7. 发明授权
    • Method and apparatus for aligning a color scannerless range imaging system
    • 用于对准彩色无扫描仪范围成像系统的方法和装置
    • US06410930B1
    • 2002-06-25
    • US09645752
    • 2000-08-24
    • Joseph F. Revelli, Jr.Lawrence A. Ray
    • Joseph F. Revelli, Jr.Lawrence A. Ray
    • G01J350
    • G01S7/481G01S17/89
    • An alignment method is provided for a color scannerless range imaging system whereby the separate optical paths of colored texture and monochromatic range images may be precisely aligned. The range imaging system includes an illumination system for illuminating a scene with modulated infrared illumination, image forming optics for forming an image of the scene, optical means for forming first and second optical paths between the image forming optics and an image sensor, a transponder subject to modulation located in the first optical path for amplifying and converting infrared light to visible light to form a range image on the image sensor. The alignment method includes the steps of providing a target having alignment indicia that can be imaged in both infrared and visible regions of the spectrum, capturing an infrared image of the target using the first optical path, capturing a color image of the target using the second optical path, and adjusting at least one of the optical paths so that the captured images are coincident.
    • 提供了一种用于彩色无扫描范围成像系统的对准方法,由此可以精确对准彩色纹理和单色范围图像的单独光路。 范围成像系统包括用调制红外照明照明场景的照明系统,用于形成场景图像的图像形成光学器件,用于在成像光学器件和图像传感器之间形成第一和第二光路的光学装置,应答器对象 到位于第一光路中的调制,用于将红外光放大并转换成可见光,以在图像传感器上形成范围图像。 对准方法包括以下步骤:提供具有可以在光谱的红外和可见区域中成像的对准标记的目标,使用第一光路捕获目标的红外图像,使用第二光学捕获目标的彩色图像 光路,并且调整光路中的至少一个,使得所捕获的图像一致。
    • 9. 发明授权
    • Langmuir-Blodgett film in an integrated electro-optical scanner
    • Langmuir-Blodgett电影在一个集成的电光学扫描仪
    • US5327512A
    • 1994-07-05
    • US24716
    • 1993-03-01
    • Thomas L. PennerNancy J. ArmstrongDavid J. WilliamsJoseph F. Revelli
    • Thomas L. PennerNancy J. ArmstrongDavid J. WilliamsJoseph F. Revelli
    • G02F1/065H04N1/036G02B6/10
    • H04N1/036G02F1/065G02F2202/027
    • A fully integrated electro-optic page-scanner comprises an optically-transparent waveguide made from an electro-optic polymer formed as a Langmuir-Blodgett film, and a linear array of electrically-addressable, spaced, parallel electrodes for selectively altering the refractive index across pixel-sized portions of the polymeric waveguide. Parallel addressing of the electrodes in accordance with the intensity pattern of a line of pixels to be recorded acts to modulate the phase front of an optical wave propagating within the waveguide in accordance with such line intensity pattern. Schlieren optics, also integrated with the page-scanner, convert the phase-front-modulated wave to an intensity-modulated pixel pattern which can be imaged onto a moving photosensitive recording element to record a two-dimensional (page) of image information. By using an electro-optic polymer formed as a Langmuir-Blodgett film as the waveguide, certain disadvantages of prior art scanning devices are eliminated.
    • 完全集成的电光寻像扫描器包括由形成为Langmuir-Blodgett膜的电光聚合物制成的光学透明波导和可电寻址的间隔开的平行电极的线性阵列,用于选择性地改变折射率 聚合物波导的像素大小的部分。 根据要记录的像素行的强度图案,电极的并行寻址用于根据这种线强度图案来调制在波导内传播的光波的相位前沿。 也与页面扫描仪集成的施利伦光学器件将相位前调制波转换成强度调制像素图案,其可以被成像到移动的光敏记录元件上以记录图像信息的二维(页)。 通过使用形成为Langmuir-Blodgett膜的电光聚合物作为波导,消除了现有技术的扫描装置的某些缺点。