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    High-speed optical modulator and method of modulating light by using the same
    2.
    发明授权
    High-speed optical modulator and method of modulating light by using the same 有权
    高速光调制器及其使用方法

    公开(公告)号：US08953238B2

    公开(公告)日：2015-02-10

    申请号：US12720706

    申请日：2010-03-10

    申请人： Ji-deog Kim ,  Yong-hwa Park ,  Yong-jun Park ,  Chang-kwon Hwangbo ,  Jang-hoon Lee ,  Jin-joo Kim

    发明人： Ji-deog Kim ,  Yong-hwa Park ,  Yong-jun Park ,  Chang-kwon Hwangbo ,  Jang-hoon Lee ,  Jin-joo Kim

    IPC分类号： G02F1/03 ,  G02F1/21

    CPC分类号： G02F1/21 ,  G02F2001/213

    摘要： Provided are a high-speed optical modulator and a method of modulating light by using the same. The optical modulator includes first and second resonance cavities that are sequentially stacked on a transparent substrate, wherein the first and second resonance cavities each include an electric-optical layer. According to the method, first and second voltages having different sizes are simultaneously applied respectively to the first and second resonance cavities, and then for the other configuration of the modulator mutually interchanged voltages are applied.

    摘要翻译： 提供了一种高速光学调制器和通过使用它们来调制光的方法。 光调制器包括依次层叠在透明基板上的第一和第二谐振腔，其中第一和第二谐振腔各自包括电光层。 根据该方法，具有不同尺寸的第一和第二电压分别同时施加到第一和第二共振腔，然后对于调制器的另一配置相互互换的电压被施加。

    Transmissive image modulator including stacked diode structure having multi absorption modes
    3.
    发明授权
    Transmissive image modulator including stacked diode structure having multi absorption modes 有权
    透射图像调制器包括具有多个吸收模式的堆叠二极管结构

    公开(公告)号：US09051178B2

    公开(公告)日：2015-06-09

    申请号：US13617920

    申请日：2012-09-14

    申请人： Yong-chul Cho ,  Yong-tak Lee ,  Jang-woo You ,  Byung-hoon Na ,  Yong-hwa Park ,  Chang-young Park ,  Hee-ju Chio ,  Gun-wu Ju

    发明人： Yong-chul Cho ,  Yong-tak Lee ,  Jang-woo You ,  Byung-hoon Na ,  Yong-hwa Park ,  Chang-young Park ,  Hee-ju Chio ,  Gun-wu Ju

    IPC分类号： G02F1/017 ,  B82Y20/00 ,  H01L31/0352

    CPC分类号： B82Y20/00 ,  G02F1/017 ,  G02F2203/12 ,  H01L31/035236

    摘要： A transmissive light modulator including a first reflection layer; a first active layer, arranged on the first reflection layer and including a plurality of quantum well layers and a plurality of barrier layers; a second reflection layer arranged on the first active layer; a second active layer, arranged on the second reflection layer and including a plurality of quantum well layers and a plurality of barrier layers; and a third reflection layer arranged on the second active layer, wherein the first reflection layer and the third reflection layer are each doped with a first type dopant, and the second reflection layer is doped with a second type dopant, which is electrically opposite to the first type dopant.

    摘要翻译： 一种透射光调制器，包括第一反射层; 第一有源层，布置在所述第一反射层上并且包括多个量子阱层和多个势垒层; 布置在第一有源层上的第二反射层; 第二有源层，布置在所述第二反射层上并且包括多个量子阱层和多个势垒层; 以及布置在所述第二有源层上的第三反射层，其中所述第一反射层和所述第三反射层各自掺杂有第一类型掺杂剂，并且所述第二反射层掺杂有与所述第二反射层电气相反的第二类型掺杂剂 第一种掺杂剂。

    3-dimensional image acquisition apparatus and method of extracting depth information in the 3D image acquisition apparatus
    4.
    发明授权
    3-dimensional image acquisition apparatus and method of extracting depth information in the 3D image acquisition apparatus 有权
    三维图像获取装置和在3D图像获取装置中提取深度信息的方法

    公开(公告)号：US08902411B2

    公开(公告)日：2014-12-02

    申请号：US13160135

    申请日：2011-06-14

    申请人： Yong-hwa Park ,  Jang-woo You ,  Yong-chul Cho

    发明人： Yong-hwa Park ,  Jang-woo You ,  Yong-chul Cho

    IPC分类号： G01S17/36 ,  G01S17/89 ,  G01S7/487 ,  G01S17/87 ,  G01C3/08

    CPC分类号： G01S17/36 ,  G01S7/487 ,  G01S17/87 ,  G01S17/89

    摘要： A 3 dimensional (3D) image acquisition apparatus and a method of extracting depth information in the 3D image acquisition apparatus are provided. The method of extracting depth information includes sequentially projecting N (N is a natural number equal to or greater than 3) different pieces of projection light onto a object; modulating N pieces of reflection light reflected from the object with an optical modulation signal having a gain waveform; generating N images by capturing the N pieces of modulated reflection light; generating a first averaged image by multiplying the N images by primary weights and generating a second averaged image by multiplying the N images by secondary weights; acquiring an average phase delay from the first and second averaged images; and calculating a distance to the object from the average phase delay.

    摘要翻译： 提供了三维（3D）图像采集装置和提取3D图像采集装置中的深度信息的方法。 提取深度信息的方法包括将不同投影光的N（N等于或大于3的自然数）顺序投影到物体上; 用具有增益波形的光调制信号调制从物体反射的N个反射光; 通过捕获N个调制反射光产生N个图像; 通过将N个图像乘以主要权重来产生第一平均图像，并且通过将N个图像乘以次要权重来产生第二平均图像; 从所述第一和第二平均图像获取平均相位延迟; 以及从所述平均相位延迟计算到所述物体的距离。

    Beam splitter for 3D camera, and 3D image acquisition apparatus employing the beam splitter
    7.
    发明授权
    Beam splitter for 3D camera, and 3D image acquisition apparatus employing the beam splitter 有权
    用于3D照相机的光束分离器和采用分束器的3D图像采集装置

    公开(公告)号：US09188662B2

    公开(公告)日：2015-11-17

    申请号：US13162224

    申请日：2011-06-16

    申请人： Jang-woo You ,  Yong-hwa Park ,  Yong-chul Cho

    发明人： Jang-woo You ,  Yong-hwa Park ,  Yong-chul Cho

    IPC分类号： G02B27/14 ,  H04N13/02 ,  G01S7/481 ,  G01S17/89 ,  H04N5/225 ,  H04N5/33 ,  G02B27/10 ,  G03B15/03 ,  G03B35/08

    CPC分类号： G01S7/4811 ,  G01S17/89 ,  G02B27/1013 ,  G02B27/141 ,  G03B15/03 ,  G03B35/08 ,  H04N5/2254 ,  H04N5/33

    摘要： A beam splitter and a 3D image acquisition apparatus including the beam splitter are provided. The beam splitter includes a light incident surface on which light having a first wavelength and light having a second wavelength are incident; a beam splitting surface which is inclined to the light incident surface and reflects the light having the first wavelength and transmits the light having the second wavelength; a first light exit surface through which the light having the first wavelength reflected from the beam splitting surface exits; a first reflective surface which reflects the light having the second wavelength transmitted by the beam splitting surface; a second reflective surface which reflects the light having the second wavelength reflected from the first reflective surface; and a second light exit surface through which the light having the second wavelength reflected from the second reflective surface exits.

    摘要翻译： 提供了一种分束器和包括分束器的3D图像采集装置。 分束器包括光入射表面，在该入射表面上入射具有第一波长的光和具有第二波长的光; 光束分离表面，其与所述光入射表面倾斜并且反射具有所述第一波长的光并透射具有所述第二波长的光; 第一光出射表面，具有从分束表面反射的第一波长的光离开; 第一反射表面，其反射由分束表面传输的具有第二波长的光; 反射从第一反射面反射的具有第二波长的光的第二反射面; 以及第二光出射表面，具有从第二反射表面反射的第二波长的光离开。

    Optical system having integrated illumination and imaging optical systems, and 3D image acquisition apparatus including the optical system
    8.
    发明授权
    Optical system having integrated illumination and imaging optical systems, and 3D image acquisition apparatus including the optical system 有权
    具有集成照明和成像光学系统的光学系统，以及包括光学系统的3D图像采集装置

    公开(公告)号：US09170471B2

    公开(公告)日：2015-10-27

    申请号：US13156789

    申请日：2011-06-09

    申请人： Yong-hwa Park ,  Jang-woo You ,  Alexander Shirankov ,  Stanislav Shtykov ,  Viktor Pavlov

    发明人： Yong-hwa Park ,  Jang-woo You ,  Alexander Shirankov ,  Stanislav Shtykov ,  Viktor Pavlov

    IPC分类号： H04N13/02 ,  G03B15/03 ,  G02B7/32 ,  G03B13/20 ,  G03B35/08

    CPC分类号： G03B15/03 ,  G02B7/32 ,  G03B13/20 ,  G03B35/08

    摘要： An optical system including integrated illumination and imaging optical systems, and a 3-dimensional (3D) image acquisition apparatus including the optical system. In the optical system of the 3D image acquisition apparatus, the illumination optical system and the imaging optical system are integrated to have a coaxial optical path. Accordingly, there is no parallax between the illumination optical system and the imaging optical system, so that depth information about an object acquired using illumination light may reflect actual distances between the object and the 3D image acquisition apparatus. Consequently, the depth information about the object may be more precise. The zero parallax between the illumination optical system and the imaging optical system may improve utilization efficiency of the illumination light. As a result, a greater amount of light may be incident on the 3D image acquisition apparatus, which ensures to acquire further precise depth information about the object.

    摘要翻译： 包括集成照明和成像光学系统的光学系统以及包括该光学系统的三维（3D）图像采集设备。 在3D图像获取装置的光学系统中，照明光学系统和成像光学系统被集成为具有同轴光路。 因此，照明光学系统和成像光学系统之间不存在视差，因此关于使用照明光获取的物体的深度信息可以反映物体与3D图像获取装置之间的实际距离。 因此，关于对象的深度信息可能更精确。 照明光学系统和成像光学系统之间的零视差可以提高照明光的利用效率。 结果，可能在3D图像获取装置上入射更多量的光，这确保获得关于对象的更精确的深度信息。

    Method and apparatus for calculating a distance between an optical apparatus and an object
    9.
    发明授权
    Method and apparatus for calculating a distance between an optical apparatus and an object 有权
    用于计算光学设备和物体之间的距离的方法和设备

    公开(公告)号：US08611610B2

    公开(公告)日：2013-12-17

    申请号：US12837814

    申请日：2010-07-16

    申请人： Yong-hwa Park ,  Jang-woo You

    发明人： Yong-hwa Park ,  Jang-woo You

    IPC分类号： G06K9/00 ,  H01J40/14 ,  H01L31/00

    CPC分类号： G06T7/521 ,  G06T2207/20056

    摘要： A method and apparatus for determining a distance between an optical apparatus and an object by considering a measured nonlinear waveform, as opposed to a mathematically ideal waveform. The method and apparatus may accurately calculate distance information without being affected by a type of waveform projected onto the object and may not require an expensive light source or a light modulator for generating a light with little distortion and nonlinearity. Further, since the method may be able to use a general light source, a general light modulator, and a general optical apparatus, additional costs do not arise. Furthermore, a lookup table, in which previously calculated distance information is stored, may be used, and thus the amount of computation required to be performed to calculate the distance is small, thereby allowing for quick calculation of the distance information in real time.

    摘要翻译： 与数学上理想的波形相反，通过考虑测量的非线性波形来确定光学装置和物体之间的距离的方法和装置。 该方法和装置可以精确地计算距离信息而不受投影到物体上的波形的类型的影响，并且可能不需要昂贵的光源或用于产生具有很小失真和非线性的光的光调制器。 此外，由于该方法可以使用通用光源，普通光调制器和通用光学装置，所以不会产生额外的成本。 此外，可以使用其中存储先前计算出的距离信息的查找表，因此需要执行计算距离的计算量很小，从而实时地快速计算距离信息。