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1. 发明授权

US4464567A Photoelectric information and focus detector 失效
标题翻译：光电信息和焦点检测器
公开(公告)号：US4464567A
公开(公告)日：1984-08-07
申请号：US279101
申请日：1981-06-30
申请人： Charles Reilly , Leonard Laub , Krishna Swaminathan
发明人： Charles Reilly , Leonard Laub , Krishna Swaminathan
IPC分类号： G11B7/08 , G11B7/09 , G11B7/12 , H01L31/02 , G01J1/36
CPC分类号： H01L31/02024 , G11B7/0917 , G11B7/12 , G11B2007/0924
摘要： Apparatus for reading information stored in a track pattern on a radiation reflecting record comprises a source of radiation such as a laser, a diffraction grating for providing at least a zero order beam component and a pair of first order beam components, an objective lens assembly, a photodetector array, the photodetector array comprising a unitary data photodetector disposed for impingement of the zero order beam component for sensing stored information and at least first and second paired photodetector arrays adjacent to the data photodetector including separated sectors disposed along an axis including the data photodetector for providing at least focus error correction signals to the objective lens assembly, and means provided in the optical path between the objective lens assembly and the photodetector array for providing a first portion of the reading beam components which remains relatively fixed in size and a second portion of the reading beam components which varies substantially linearly in size as the record deviates from a plane of focus.
摘要翻译：用于读取存储在辐射反射记录上的轨道图案中的信息的装置包括诸如激光的辐射源，用于提供至少零级光束分量的衍射光栅和一对一级光束分量，物镜组件，一个光电检测器阵列，该光电检测器阵列包括一个统一的数据光电检测器，该单元数据光电检测器设置成用于冲击零级光束分量以便感测存储的信息;以及至少第一和第二对成对的光电检测器阵列，该数据光电检测器包括沿着包括数据光电检测器用于将至少聚焦误差校正信号提供给物镜组件，以及设置在物镜组件和光电检测器阵列之间的光路中的装置，用于提供保持相对固定尺寸的读取光束分量的第一部分和第二部分的读取光束组件是不同的当记录偏离焦点平面时，其尺寸呈线性上升。

2. 发明申请

US20170180654A1 SYSTEM AND METHOD FOR ENHANCED SIGNAL TO NOISE RATIO PERFORMANCE OF A DEPTH CAMERA SYSTEM 审中-公开
公开(公告)号：US20170180654A1
公开(公告)日：2017-06-22
申请号：US14976629
申请日：2015-12-21
申请人： Krishna Swaminathan , Anders Grunnet-Jepsen
发明人： Krishna Swaminathan , Anders Grunnet-Jepsen
IPC分类号： H04N5/357 , H04N5/353 , G01C3/08 , H04N5/374 , G01B11/25 , H04N13/02 , H04N5/33
CPC分类号： G01C3/08 , G01B11/2518 , G02B13/16 , H04N13/25 , H04N13/254
摘要： A method and apparatus for enhancing the signal to noise ratio performance of a depth camera system are described. In one embodiment, the method includes exposing a portion of a pixel array of a rolling camera sensor, and activating a portion of a rolling projector to generate a portion of a projection pattern during the exposure of the portion of the pixel array. The method may also include capturing image data for the generated portion of the projection pattern with the exposed portion of the pixel array of the rolling camera sensor. Furthermore, the method may include performing depth reconstruction based, at least in part, on the captured image data.

3. 发明授权

US10101154B2 System and method for enhanced signal to noise ratio performance of a depth camera system 有权
公开(公告)号：US10101154B2
公开(公告)日：2018-10-16
申请号：US14976629
申请日：2015-12-21
申请人： Krishna Swaminathan , Anders Grunnet-Jepsen
发明人： Krishna Swaminathan , Anders Grunnet-Jepsen
IPC分类号： H04N13/00 , G01C3/08 , G01B11/25 , H04N13/02 , G02B13/16
摘要： A method and apparatus for enhancing the signal to noise ratio performance of a depth camera system are described. In one embodiment, the method includes exposing a portion of a pixel array of a rolling camera sensor, and activating a portion of a rolling projector to generate a portion of a projection pattern during the exposure of the portion of the pixel array. The method may also include capturing image data for the generated portion of the projection pattern with the exposed portion of the pixel array of the rolling camera sensor. Furthermore, the method may include performing depth reconstruction based, at least in part, on the captured image data.

4. 发明申请

US20170374244A1 COMPACT, LOW COST VCSEL PROJECTOR FOR HIGH PERFORMANCE STEREODEPTH CAMERA 审中-公开
公开(公告)号：US20170374244A1
公开(公告)日：2017-12-28
申请号：US15193956
申请日：2016-06-27
申请人： Krishna Swaminathan , Anders Grunnet-Jepsen , Leonid M. Keselman
发明人： Krishna Swaminathan , Anders Grunnet-Jepsen , Leonid M. Keselman
IPC分类号： H04N5/217 , H01S5/42 , F21V5/00 , G02B3/00 , H04N13/02 , H04N5/33
CPC分类号： H04N5/217 , F21V5/007 , F21V5/008 , G01B11/2513 , G01C3/08 , G01S3/00 , G02B3/0056 , G06F3/011 , G06F3/012 , G06F3/017 , G06F3/0304 , G06F3/03547 , G06F3/04883 , H01S5/005 , H01S5/02292 , H01S5/423 , H01S5/426 , H04N5/33 , H04N13/257
摘要： A VCSEL projector and method for using the same are disclosed. In one embodiment, the apparatus comprises a vertical cavity surface emitting laser (VCSEL) array comprising a plurality of VCSELs; a micro-lens array coupled to the VCSEL array and having a plurality of lenses, and each of the plurality of lenses is positioned over a VCSEL in the VCSEL array; and a projection lens coupled to the micro-lens array (MLA), where light emitted by the VCSEL array is projected as a sequence of patterns onto an object by the projection lens.

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