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公开(公告)号：US20080246943A1
公开(公告)日：2008-10-09
申请号：US12001606
申请日：2007-12-11
IPC分类号： G01C3/08
CPC分类号： G01B11/2518 , G01N21/4738 , G01N21/9515 , G01N21/95623 , G01N2021/8411 , G01N2021/8472 , G01N2201/0642 , G02B26/101 , G02B27/2292 , G03B21/005 , G03B21/28 , G03B35/18 , G06T7/521 , H04N9/3129 , H04N9/3185 , H04N9/3194
摘要： A 3D pulsed laser projection system scans an object to produce a dense 3D point cloud and projects a laser light beam onto an object as a glowing template. A high-sensitivity optical feedback system receives and detects a feedback beam of the output beam light diffusely reflected from the object. The feedback light and projected beam share the same beam path between steering mirrors and the object. A light suppression component controls stray scattered light, including ambient light, from being detected. A time-of-flight measurement subsystem provides a distance-to-object measurement for projected pulses. An acousto-optical modulator, variable gain detected signal amplification and variable photo-detector power together produce a dynamic range for detected reflected feedback signals of at least 100,000, and up to 500,000. Optical fiber cables spatially filter scattered light and isolate the photo-detectors thermally. The laser is preferably pulsed at least 50 kHz, with sampling of the projected and feedback reflected optical pulse signals at a sampling rate of up to 10 gigasamples per second.
摘要翻译： 3D脉冲激光投影系统扫描物体以产生致密的3D点云，并将激光束投射到物体上作为发光模板。 高灵敏度的光学反馈系统接收并检测从物体漫反射的输出光束的反射光束。 反射光和投影光束在转向镜和物体之间共享相同的光束路径。 光抑制部件控制被检测的杂散散射光，包括环境光。 飞行时间测量子系统为投影脉冲提供距离对象测量。 声光调制器，可变增益检测信号放大和可变光电检测器功率一起为检测到的反射信号产生至少100,000，最高达500,000的动态范围。 光纤电缆在空间上过滤散射光，并将光电检测器隔离开。 激光器优选地脉冲至少50kHz，其中投影和反射的反射光脉冲信号的采样速率最高达每秒10吉比特。
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公开(公告)号：US08582087B2
公开(公告)日：2013-11-12
申请号：US13336568
申请日：2011-12-23
IPC分类号： G01C3/08
CPC分类号： G01B11/2518 , G02B26/101 , G02B27/2292 , G03B21/28 , G03B35/18 , G06T7/521
摘要： A laser projection system is disclosed. The system includes a laser projector that projects a light beam to the surface of an object and scans that projected light beam over at least a portion of the surface, wherein a portion of the projected beam is diffusely reflected from the surface back to the system. The system further includes an optical signal detector that receives the feedback light beam and converts it to an image signal, a light suppression means for suppressing unwanted light from entering the optical signal detector, and a computer for producing a measurement of the distance from the projector to the object surface, and controlling the system to buck the laser projector into a coordinate system of the object using three or more features on the object, wherein at least one of the three or more features serves as a targetless fiducial point.
摘要翻译： 公开了一种激光投影系统。 该系统包括激光投影仪，该激光投影仪将光束投射到物体的表面，并将该投影光束扫描在表面的至少一部分上，其中投影光束的一部分从表面漫反射回系统。 该系统还包括接收反馈光束并将其转换为图像信号的光信号检测器，用于抑制不需要的光进入光信号检测器的光抑制装置，以及用于产生距离投影仪的距离的测量的计算机 并且控制系统使用物体上的三个或更多个特征将激光投影仪降低到对象的坐标系中，其中三个或更多个特征中的至少一个用作无目标基准点。
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公开(公告)号：US08085388B2
公开(公告)日：2011-12-27
申请号：US12001606
申请日：2007-12-11
IPC分类号： G01C3/08
CPC分类号： G01B11/2518 , G01N21/4738 , G01N21/9515 , G01N21/95623 , G01N2021/8411 , G01N2021/8472 , G01N2201/0642 , G02B26/101 , G02B27/2292 , G03B21/005 , G03B21/28 , G03B35/18 , G06T7/521 , H04N9/3129 , H04N9/3185 , H04N9/3194
摘要： A 3D pulsed laser projection system scans an object to produce a dense 3D point cloud and projects a laser light beam onto an object as a glowing template. A high-sensitivity optical feedback system receives and detects a feedback beam of the output beam light diffusely reflected from the object. The feedback light and projected beam share the same beam path between steering mirrors and the object. A light suppression component controls stray scattered light, including ambient light, from being detected. A time-of-flight measurement subsystem provides a distance-to-object measurement for projected pulses. An acousto-optical modulator, variable gain detected signal amplification and variable photo-detector power together produce a dynamic range for detected reflected feedback signals of at least 100,000, and up to 500,000. Optical fiber cables spatially filter scattered light and isolate the photo-detectors thermally. The laser is preferably pulsed at least 50 kHz, with sampling of the projected and feedback reflected optical pulse signals at a sampling rate of up to 10 gigasamples per second.
摘要翻译： 3D脉冲激光投影系统扫描物体以产生致密的3D点云，并将激光束投射到物体上作为发光模板。 高灵敏度的光学反馈系统接收并检测从物体漫反射的输出光束的反射光束。 反射光和投影光束在转向镜和物体之间共享相同的光束路径。 光抑制部件控制被检测的杂散散射光，包括环境光。 飞行时间测量子系统为投影脉冲提供距离对象测量。 声光调制器，可变增益检测信号放大和可变光电检测器功率一起为检测到的反射信号产生至少100,000，最高达500,000的动态范围。 光纤电缆在空间上过滤散射光，并将光电检测器隔离开。 激光器优选地脉冲至少50kHz，其中投影和反射的反射光脉冲信号的采样速率最高达每秒10吉比特。
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公开(公告)号：US07306339B2
公开(公告)日：2007-12-11
申请号：US11345784
申请日：2006-02-01
CPC分类号： G01B11/2518 , G01N21/4738 , G01N21/9515 , G01N21/95623 , G01N2021/8411 , G01N2021/8472 , G01N2201/0642 , G03B21/00 , G06T7/521 , H04N9/3129 , H04N9/3185 , H04N9/3194
摘要： A laser projection system scans an output laser light beam onto an object to detect features. A high-sensitivity optical feedback system receives and detects a feedback beam of the output beam light diffusely reflected from the object. The feedback light and projected output beam share the same beam path between beam-steering mirrors of the projector and the object. The laser projection system has light suppression components to control stray scattered light, including ambient light, from being detected. A computer of the laser projection system calculates fiducial points on the object from detected features to align the projection system with the object without using targets. This feature detection is used in a process to guide assembly and fabrication on or to the object, and to verify the accurate placement of parts and fabrication steps in place after they are assembled or processed. In one form, the detected feature is a light spot on the object produced by a second light source.
摘要翻译： 激光投影系统将输出激光束扫描到物体上以检测特征。 高灵敏度的光学反馈系统接收并检测从物体漫反射的输出光束的反射光束。 反射光和投影输出光束在投影仪的光束 - 转向镜与物体之间共享相同的光束路径。 激光投影系统具有抑制被检测的散射光（包括环境光）的光抑制元件。 激光投影系统的计算机根据检测到的特征来计算物体上的基准点，使投影系统与物体对准，而不使用目标。 该特征检测用于在物体上引导组装和制造的过程，并且在组装或处理之后验证零件和制造步骤的准确位置。 在一种形式中，检测到的特征是由第二光源产生的物体上的光点。
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公开(公告)号：US06547397B1
公开(公告)日：2003-04-15
申请号：US09553235
申请日：2000-04-19
IPC分类号： G03B2126
CPC分类号： G01S17/10 , G01B11/002 , G01S5/163
摘要： A laser projector for projecting a 3-D image onto an object. The laser projector has an optics module, a controller module, a power module, and a timing module. The timing module coupled with the optics module measures the distance between the laser projector and the object.
摘要翻译： 一种用于将3-D图像投射到物体上的激光投影仪。 激光投影机具有光学模块，控制器模块，电源模块和定时模块。 与光学模块耦合的定时模块测量激光投影仪和物体之间的距离。
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公开(公告)号：US06935748B2
公开(公告)日：2005-08-30
申请号：US10936833
申请日：2004-09-08
摘要： An apparatus and method for recording an image on the surface of a 3D object uses a laser projector that scans a light beam over the surface in an image pattern. The projector operates in a template imaging mode and an image recording mode where the beam scans at a speed that in a single pass/scan mode is typically four to five orders of magnitude slower than in the template imaging mode. A layer of a photosensitive material is applied to the surface of the object either partially or fully. Projection in the template imaging mode can guide the applying. The layer is substantially insensitive to ambient light for at least a period of time necessary to perform a desired processing step on the object. The layer has a maximum spectral sensitivity in the vicinity of the wavelength of the laser light beam. In one or multiple passes of the beam over the image pattern operating in the image record mode, the accumulated light energy dose density is sufficient to react the material and record the image.
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公开(公告)号：US20120154784A1
公开(公告)日：2012-06-21
申请号：US13336568
申请日：2011-12-23
IPC分类号： G01C3/08
CPC分类号： G01B11/2518 , G02B26/101 , G02B27/2292 , G03B21/28 , G03B35/18 , G06T7/521
摘要： A laser projection system is disclosed. The system includes a laser projector that projects a light beam to the surface of an object and scans that projected light beam over at least a portion of the surface, wherein a portion of the projected beam is diffusely reflected from the surface back to the system. The system further includes an optical signal detector that receives the feedback light beam and converts it to an image signal, a light suppression means for suppressing unwanted light from entering the optical signal detector, and a computer for producing a measurement of the distance from the projector to the object surface, and controlling the system to buck the laser projector into a coordinate system of the object using three or more features on the object, wherein at least one of the three or more features serves as a targetless fiducial point.
摘要翻译： 公开了一种激光投影系统。 该系统包括激光投影仪，该激光投影仪将光束投射到物体的表面，并将该投影光束扫描在表面的至少一部分上，其中投影光束的一部分从表面漫反射回系统。 该系统还包括接收反馈光束并将其转换为图像信号的光信号检测器，用于抑制不需要的光进入光信号检测器的光抑制装置，以及用于产生距离投影仪的距离的测量的计算机 并且控制系统使用物体上的三个或更多个特征将激光投影仪降低到对象的坐标系中，其中三个或更多个特征中的至少一个用作无目标基准点。
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公开(公告)号：US07372558B2
公开(公告)日：2008-05-13
申请号：US10492264
申请日：2002-10-11
CPC分类号： G03B31/00 , G01B11/2513
摘要： A method and system for visualizing deviations on an actual surface 10, 30 from a nominal, or designed, surface 28 utilizes a system and method for mapping the spatial (e.g. x, y and z) coordinates of the actual surface 10, 30 into a computer 13, comparing the mapped actual surface to the nominal surface 28 to produce a three-dimensional distribution of deviation values (D), processing this distribution into a topographical pattern 34 of multiple contours or areas 34a . . . 34n, each contour or area having the same, or generally the same, deviation value (D), and optically projecting this topographical pattern 34 onto the actual surface 10, 30 in registry with the initial surface mapping to provide a display of the surface deviations (D) directly on the actual surface 10, 30. The deviations are measured along a direction D normal to the actual surface so that the three-dimensional distribution is given in x, y, D coordinates. The optical projection is preferably a laser projection 38. The mapping and projection onto the actual surface 10, 30 are made, and coordinated with one another, with respect to three reference points 32 on the surface 10, 30.
摘要翻译： 用于将来自标称或设计的表面28的实际表面10,30上的偏差可视化的方法和系统利用用于将实际表面10,30的空间（例如x，y和z）坐标映射到 计算机13，将映射的实际表面与标称表面28进行比较以产生偏差值（D）的三维分布，将该分布处理成多个轮廓或区域31a的形状图案34。 。 。 34n，每个轮廓或区域具有相同或大致相同的偏差值（D），并且将该形貌图案34光学投影到实际表面10,30上，与初始表面映射对齐以提供表面的显示 偏差（D）直接在实际表面10,30上。 沿垂直于实际表面的方向D测量偏差，使得三维分布在x，y，D坐标中给出。 光学投影优选为激光投影38。 相对于表面10,30上的三个参考点32，对实际表面10,30进行映射和投影并相互协调。
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