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公开(公告)号：EP0762143A1
公开(公告)日：1997-03-12
申请号：EP96111721.5
申请日：1996-07-20
Applicant: Robotic Vision Systems Inc.
Inventor： Stern, Howard , Metzger, Robert J.
Abstract: A three dimensional sensor includes an illumination source (1) that produces broadband, high intensity optical energy including a number of individual wavelength components. The components are impinged in a spot on a target (6). Dispersion is applied to the light reflected from the spot, either before target impingement, after target impingement, or both, whereby light of different wavelengths is focused at different ranges. The wavelength of maximum reflection is detected to determine the target range. In one embodiment, temporal modulation is applied to the light before target impingement and a stationary detector (5) determines the target range by relating the maximum light received to the time it is received, and thus the wavelength. In another embodiment, all wavelengths are reflected from the target simultaneously, the reflected beam is chromatically dispersed in the transverse direction and a detector array, or a linear position sensor, is employed to determine the transverse position of the maximum amplitude of the transversely dispersed beam. The transverse position, being related to a particular wavelength, contains information from which the range to the target is determinable. Wavelength dependent reflection may be compensated.
Abstract translation: 三维传感器包括产生包括多个单个波长分量的宽带高强度光能的照明源（1）。 部件撞击目标上的一个点（6）。 在目标撞击之前，目标撞击之后或两者之间，对从光点反射的光施加色散，由此将不同波长的光聚焦在不同的范围。 检测最大反射波长以确定目标范围。 在一个实施例中，时间调制被施加到目标撞击之前的光，并且固定检测器（5）通过将接收到的最大光与其接收的时间相关联而确定目标范围，并因此确定该波长。 在另一个实施例中，所有波长同时从目标物反射，反射光束在横向方向上色散地分散，使用检测器阵列或线性位置传感器来确定横向分散光束的最大幅度的横向位置 。 与特定波长相关的横向位置包含可以确定目标范围的信息。 可以补偿与波长相关的反射。
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公开(公告)号：EP0762143B1
公开(公告)日：2000-10-04
申请号：EP96111721.5
申请日：1996-07-20
Applicant: Robotic Vision Systems Inc.
Inventor： Stern, Howard , Metzger, Robert J.
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公开(公告)号：EP0997748A2
公开(公告)日：2000-05-03
申请号：EP99126196.7
申请日：1996-07-20
Applicant: Robotic Vision Systems Inc.
Inventor： Stern, Howard , Metzger, Robert J.
IPC: G01S17/32
Abstract: A chromatic optical ranging sensor, comprising:
means for focusing a source beam (30) of optical energy onto a target (6) from a known location, whereby different wavelengths of said source beam are focused at different distances from said known location;
means for collecting a reflected beam from said target (6);
means for detecting and interpolating said reflected beam to determine a distance of said target from said known location,
means for separating said reflected beam into a focused portion and a unfocused portion; and
means for determining a ratio of an amplitude of said focused portion to an amplitude of said unfocused portion.Abstract translation: 一种彩色光学测距传感器，包括：用于将光能源（30）从已知位置聚焦到目标（6）上的装置，由此所述源光束的不同波长聚焦在与所述已知位置不同的距离处; 用于从所述目标（6）收集反射光束的装置; 用于检测和内插所述反射光束以确定所述目标与所述已知位置的距离的装置，用于将所述反射光束分离成聚焦部分和未聚焦部分的装置; 以及用于确定所述聚焦部分的幅度与所述未聚焦部分的幅度之比的装置。
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Patent Agency Ranking
公开(公告)号：EP0997748A3
公开(公告)日：2001-02-21
申请号：EP99126196.7
申请日：1996-07-20
Applicant: Robotic Vision Systems Inc.
Inventor： Stern, Howard , Metzger, Robert J.
Abstract: A chromatic optical ranging sensor, comprising: means for focusing a source beam (30) of optical energy onto a target (6) from a known location, whereby different wavelengths of said source beam are focused at different distances from said known location; means for collecting a reflected beam from said target (6); means for detecting and interpolating said reflected beam to determine a distance of said target from said known location, means for separating said reflected beam into a focused portion and a unfocused portion; and means for determining a ratio of an amplitude of said focused portion to an amplitude of said unfocused portion.
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5.发明公开Apparatus for detecting a polarization altering substance on a surface 失效Vorrichtung zur Detektion einerpolarisationsveränderndenSubstanz auf einerOberfläche
公开(公告)号：EP0827908A1
公开(公告)日：1998-03-11
申请号：EP96306480.3
申请日：1996-09-06
Applicant: Robotic Vision Systems Inc.
Inventor： Schoeffler, Daniel , Stern, Howard , Costa, Pat V.
CPC classification number: G08B19/02 , B64D15/20 , G01J4/04 , G01J2004/005
Abstract: An apparatus for detecting a polarization altering substance, such as ice, on a surface includes a polarizing filter on the surface between the surface and the polarization altering substance. When the polarizing filter includes alternating regions having orthogonal polarizing properties, only one viewing of the surface through a blocking filter is required. When light, either polarized or unpolarized, reflects off the surface, it passes through the polarizing filter and becomes polarized. Reflected light that additionally passes through ice after leaving the polarizer becomes unpolarized. When viewed through a blocking polarizer filter, polarized light passing through ice appears bright due to the unpolarizing effect of ice. On the other hand, polarized light not passing through ice retains its polarization and appears dark when viewed through a blocking filter. Since the polarizing filter is between the surface and the viewer, the surface can be metallic, dielectric, or painted without affecting the results. If the proper blocking orientation for the viewer is not known in advance, the Stokes coefficients can be calculated if views are taken through a series of specified polarizing filters. The ratio of polarized light returned to the viewer compared to the unpolarized light returned to the viewer can then be calculated from any arbitrary position. A retroreflective substance on the surface further enhances the effect for systems employing an active illumination source located coaxially with or adjacent to the imaging system.
Abstract translation: 用于在表面上检测诸如冰的偏振改变物质的装置包括在表面和偏振改变物质之间的表面上的偏振滤光器。 当偏振滤光器包括具有正交偏振特性的交替区域时，仅需要通过阻挡滤光器观察表面。 当偏振或非偏振的光从表面反射时，它通过偏振滤光器并变成极化的。 离开偏光片之后额外通过冰的反射光变成非偏振光。 当通过阻挡偏振器滤光器观察时，通过冰的偏振光由于冰的非偏振效应而变亮。 另一方面，当通过阻挡滤光片观察时，不通过冰的偏振光保持其偏振并且看起来暗。 由于偏振滤光片位于表面和观察者之间，因此表面可以是金属的，电介质的或涂层的，而不影响结果。 如果预先不知道观察者的正确的阻挡方位，如果通过一系列指定的偏振滤光片拍摄视图，则可以计算斯托克斯系数。 然后可以从任何任意位置计算返回观察者的偏振光与返回观察者的非偏振光相比的比率。 表面上的回射物质进一步增强了使用与成像系统同轴或相邻的有源照明源的系统的效果。
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6.发明公开System for detecting ice or snow on surface which specularly reflects light 失效Vereisungs- und SchneedetektorsystemfürOberflächendie spiegelnd Licht reflektieren
公开(公告)号：EP0726551A1
公开(公告)日：1996-08-14
申请号：EP95119992.6
申请日：1995-12-18
Applicant: Robotic Vision Systems Inc.
Inventor： Stern, Howard
Abstract: A method and apparatus for detecting a presence of a polarization altering substance on a specular surface includes transmitting light to the surface over a transmitting path and receiving the transmitted light from the surface and from the polarization altering substance. An intensity of the light is measured in an optical non-isolator state and in an isolator state before being compared to reference data established for the specific specular surface. The reference data are preferably established by measuring an intensity of the light in both an optical non-isolator state and in an isolator state for a known surface when the polarization altering substance is absent from the known surface.
Abstract translation: 用于检测镜面上的偏振改变物质的存在的方法和装置包括在透射路径上的表面上传输光，并接收来自表面和偏振改变物质的透射光。 在光学非隔离器状态和隔离器状态下测量光的强度，然后与针对特定镜面确定的参考数据进行比较。 参考数据优选通过在已知表面不存在偏振改变物质时测量已知表面的光学非隔离器状态和隔离器状态下的光的强度而建立。
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公开(公告)号：EP0997748B1
公开(公告)日：2004-04-21
申请号：EP99126196.7
申请日：1996-07-20
Applicant: Robotic Vision Systems Inc.
Inventor： Stern, Howard , Metzger, Robert J.
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公开(公告)号：EP0303727A1
公开(公告)日：1989-02-22
申请号：EP87112053.1
申请日：1987-08-19
Applicant: Robotic Vision Systems Inc.
Inventor： Stern, Howard , Mauro, Alex
CPC classification number: G01B11/00 , G01B11/2518
Abstract: An arrangement for scanning the measurement field of view of a three-dimensional measurement system, in which the measurement system is pivoted through a relatively small motion to scan a relatively large area of volume. The measurement system is rotated via a control unit which accurately controls the rotation. Mathematical corrections are applied to determine the true measured coordinates.
Abstract translation: 用于扫描三维测量系统的测量视域的装置，其中测量系统通过相对小的运动枢转以扫描相对较大的体积面积。 测量系统通过精确控制旋转的控制单元旋转。 应用数学校正来确定真实的测量坐标。
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