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公开(公告)号：US20180025614A1
公开(公告)日：2018-01-25
申请号：US15673815
申请日：2017-08-10
发明人： Matthew Gelineau , Curtis Rosenow
CPC分类号： G08B21/22 , F16P3/144 , G01V8/22 , G08B21/182
摘要： Apparatus and associated methods relate to a light curtain protection system having a passive optical module arranged to receive, from an active optical module, a light signal such that a reflector reflects, through a polarization control module, the light signal to be received by a receiver in the active optical module. In an illustrative example, the polarization control module includes a half-wave plate aligned with the reflector to impart a first predetermined polarization to the reflected light signal such that the reflected light signal corresponds to a second predetermined polarization when received by the receiver. The polarization control module includes optical elements, such as, for example, a linear polarizer, to receive the reflected light such that the optical elements polarizes the received reflected light signal to correspond to a predetermined polarization. In some examples, the light curtain protection system may advantageously require operating power only for the active optical module.
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12.发明申请Time-of-Flight Safety Photoelectric Barrier and Method of Monitoring a Protective Field 审中-公开飞行时间安全光电屏障和监控保护场的方法公开(公告)号：US20160298809A1
公开(公告)日：2016-10-13
申请号：US15096797
申请日：2016-04-12
发明人： Eric Lutz , Carl Meinherz , Martin Hardegger
摘要： The present invention relates to a safety photoelectric barrier for monitoring a protective field and to a corresponding method. A safety photoelectric barrier (100) comprises a single-sided transceiver bar with a housing (102), a plurality of transceiver modules (104) each having a radiation emitting unit (112) for emitting radiation towards a reference target (108), a radiation detecting unit (114) for detecting radiation incident on the transceiver module (104), and a signal processing unit for evaluating the detected radiation regarding a distance information and an intensity information and for generating a binary output signal indicating the presence or absence of an object within the protective field. A controller module (126) evaluates the binary output signals and generates a safety signal in response to the evaluated output signals. The radiation detecting unit comprises at least a first and a second photosensitive element (114) for redundantly evaluating the distance and intensity information.
摘要翻译： 本发明涉及用于监控保护区域的安全光电屏障及相应的方法。 安全光电屏障（100）包括具有外壳（102）的单面收发器条，多个收发器模块（104），每个收发器模块具有用于向参考目标（108）发射辐射的辐射发射单元（112） 用于检测入射在收发器模块（104）上的辐射的放射线检测单元（114），以及信号处理单元，用于评估关于距离信息和强度信息的检测到的辐射，并且用于生成表示存在或不存在的二进制输出信号 对象在保护区内。 控制器模块（126）评估二进制输出信号并响应于所评估的输出信号产生安全信号。 辐射检测单元至少包括用于冗余地评估距离和强度信息的第一和第二光敏元件（114）。
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13.发明授权Apparatus and methods utilizing optical sensors operating in the reflection mode 有权利用以反射模式工作的光学传感器的装置和方法公开(公告)号：US09234790B2
公开(公告)日：2016-01-12
申请号：US13839437
申请日：2013-03-15
CPC分类号： G01J1/0425 , G01D5/35312 , G01D5/35367 , G01D5/35387 , G01D5/3539 , G01H9/004 , G01V8/14 , G01V8/16 , G01V8/22 , G01V8/24
摘要： Optical apparatus and methods utilizing sensors operating in the reflection mode are provided. The apparatus includes at least one optical bus. The at least one optical bus is configured to be optically coupled to at least one source of input optical signals, to at least one optical detector, and to a plurality of reflective sensing elements. The at least one optical bus transmits an input optical signal from the at least one source to the plurality of reflective sensing elements. At least one reflective sensing element of the plurality of reflective sensing elements receives a portion of the input optical signal and reflects at least a portion of the received portion. The at least one optical bus transmits the reflected portion to the at least one optical detector.
摘要翻译： 提供利用以反射模式工作的传感器的光学装置和方法。 该装置包括至少一个光学总线。 所述至少一个光学总线被配置为光学耦合到至少一个输入光信号源，至少一个光学检测器以及多个反射感测元件。 所述至少一个光学总线将输入光信号从所述至少一个源传输到所述多个反射感测元件。 多个反射感测元件中的至少一个反射感测元件接收输入光信号的一部分并且反射接收部分的至少一部分。 至少一个光学总线将反射部分传输到至少一个光学检测器。
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公开(公告)号：US6018159A
公开(公告)日：2000-01-25
申请号：US987818
申请日：1997-12-10
申请人： Richard A. Alderman , David A. Klein , Bo Su Chen
发明人： Richard A. Alderman , David A. Klein , Bo Su Chen
摘要： A photoelectric sensing unit, especially useful for determining the passage of clear bottles or other low contrast targets on a conveyor, contains two sensors and a signal processing unit to determine the signal differential. The signal differential is compared to a selected value and sensor output is enabled or disabled. High noise immunity, resistance to target reflection, and output reliability result. The unit may correct the selected value to account for environmental change and/or unit component performance. The unit can also figure the speed of passage of the bottles.
摘要翻译： 特别用于确定输送机上透明瓶或其他低对比度目标的通过的光电感测单元包含两个传感器和用于确定信号差分的信号处理单元。 将信号差分与选定值进行比较，并且传感器输出被使能或禁用。 高抗噪性，耐目标反射性和输出可靠性。 该单元可以更改所选择的值以考虑环境变化和/或单元组件的性能。 该装置还可以确定瓶子通过的速度。
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公开(公告)号：US4864121A
公开(公告)日：1989-09-05
申请号：US162916
申请日：1988-03-02
申请人： Karl Pietzsch
发明人： Karl Pietzsch
CPC分类号： G01V8/22
摘要： A light curtain apparatus is described which does not require a mechanically moving light deflecting element such as a mirror wheel. Instead a number of diodes (11') are arranged in a row (11) and are sequentially energized so that light from each diode in turn passes through an objective lens (12) and an aperture diaphragm and falls on a strip-like concave mirror (14). The diode row is arranged at the focal plane of the objective (12) so that the light emerging from the objective (12) is essentially parallel light. The aperture diaphragm is located in the focal plane of the strip-like concave mirror so that the parallel light emerging from it is reflected at the strip-like concave mirror (14) in a direction parallel to the optical axis (19) and focussed in a plane corresponding to the plane of the aperture diaphragm (20) which is also the focal plane of individual lenses (16') arranged in a row within the image space of the strip-like mirror (14). Thus the light emerging from the individual lenses (16' ) of the lens row (16) is a parallel beam of light (17) which appears to be continuously displaced parallel to itself as a result of the sequential energization of the diodes. At the far end of the monitored region (18) the parallel light can either be detected by a detector (25) located there or returned by a retroreflector (24) back to a photoreceiver (27) located between the strip-like concave mirror (14) and the aperture diaphragm (20).
摘要翻译： 描述了一种光幕装置，其不需要诸如镜轮的机械移动的光偏转元件。 相反地，多个二极管（11'）被排列成一排（11）并被顺序地通电，使得来自每个二极管的光依次通过物镜（12）和孔径光阑并落在带状凹面镜 （14）。 二极管排布置在物镜（12）的焦平面处，使得从物镜（12）出射的光基本上是平行的光。 孔径光阑位于条状凹面镜的焦平面中，使得从其出射的平行光沿着平行于光轴（19）的方向在条状凹面镜（14）处反射并聚焦在 对应于孔径光阑（20）的平面的平面，该平面也是在带状反射镜（14）的图像空间内排列成一列的各个透镜（16'）的焦平面。 因此，从透镜列（16）的各个透镜（16'）出射的光是平行的光束（17），其由于二极管的顺序通电而平行于其自身连续移位。 在监视区域（18）的远端，平行光可以由位于该处的检测器（25）检测，或者由后向反射器（24）返回到位于条形凹面镜（ 14）和孔径光阑（20）。
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公开(公告)号：US4822995A
公开(公告)日：1989-04-18
申请号：US121696
申请日：1987-11-16
申请人： Norman L. Stauffer
发明人： Norman L. Stauffer
CPC分类号： G01V8/22
摘要： A viewing system for utilizing a linear array of detectors so that they may view the remote object in two separate directions by use of mirrors to reflect energy from the object to the row of detectors.
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公开(公告)号：US4519707A
公开(公告)日：1985-05-28
申请号：US462249
申请日：1983-01-31
申请人： Fernand B. Kuffer
发明人： Fernand B. Kuffer
CPC分类号： G01J3/02 , G01J3/0208 , G01J3/0218 , G01J3/12 , G01J3/14 , G01J3/36 , G01V8/22
摘要： A multi-spectral detection system and method for detecting radiation from a single target within frequency bands that are in diverse portions of the electromagnetic spectrum. The system includes common radiant energy collection elements for collecting radiant energy of different width wavelength bands from a single target feature in the diverse portions of the electromagnetic spectrum and focusing the collected energy to a common focal point; a waveguide positioned at the focal point for transferring the collected radiant energy away from the focal point; an imaging system for dispersing the transferred energy into separate beams having spectral regions respectively corresponding to the diverse portions of the electromagnetic spectrum, with the beams being of uniform cross sectional dimension notwithstanding said different widths, and for focusing the separate beams to a common plane for detection by separately positioned detectors; and separate detectors of uniform cross-sectional area positioned for respectively detecting the separate beams and adapted for respectively detecting energy in the separate spectral regions of the separate beams. Various imaging systems including focusing prisms and focusing grating systems are disclosed.
摘要翻译： 一种多光谱检测系统和方法，用于检测来自在电磁光谱的不同部分的频带内的单个目标的辐射。 该系统包括用于从电磁频谱的不同部分中的单个目标特征收集不同宽度波长带的辐射能并且将所收集的能量聚焦到公共焦点的共同辐射能量收集元件; 位于所述焦点处的用于将所收集的辐射能量远离所述焦点传送的波导; 用于将转移的能量分散到具有分别对应于电磁光谱的不同部分的光谱区域的分立光束中的成像系统，其中尽管具有所述不同宽度的光束具有均匀的横截面尺寸，并且用于将分离的光束聚焦到公共平面 通过分开定位的检测器进行检测; 并且具有均匀横截面积的分离的检测器，其被定位用于分别检测单独的光束并且适于分别检测分离光束的分离的光谱区域中的能量。 公开了包括聚焦棱镜和聚焦光栅系统的各种成像系统。
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公开(公告)号：US20240307579A1
公开(公告)日：2024-09-19
申请号：US17442126
申请日：2020-07-14
申请人： Xi LI
发明人： Xi LI
CPC分类号： A61L9/20 , G01V8/22 , A61L2209/111 , A61L2209/12
摘要： A re-chargeable lithium battery drives a laser generator, and a laser is sent to a unidirectional beam expander by means of optical fiber. The widened and flattened laser beam enters a laser virus-filtering screen by means of a unidirectional fluoroscopy film. After laser reflections scan and cover the frame of the virus-filtering screen, the laser is extracted to a photoelectric sensor by means of a semi-transmissive film. If the energy of the extracted laser is less than a fixed value, suggesting that a foreign body has entered the laser virus-filtering screen and is blocking the laser, for safety reasons, the photoelectric sensor triggers a laser controller to immediately stop emitting the laser.
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公开(公告)号：US12025487B2
公开(公告)日：2024-07-02
申请号：US17655608
申请日：2022-03-21
摘要： A DAS system may include an OTDR, and acoustic-sensing optical fibers coupled to the OTDR. The acoustic-sensing optical fibers may have known relative positions within an acoustic wave transmitting medium. The DAS system may also include a processor cooperating with the OTDR to determine a propagation direction of an acoustic wave from an acoustic event in the acoustic wave transmitting medium based upon the known relative positions of the acoustic-sensing optical fibers.
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公开(公告)号：US11105954B2
公开(公告)日：2021-08-31
申请号：US15574659
申请日：2016-05-18
申请人： LASERMOTIVE, INC.
IPC分类号： G01S17/87 , G01S17/02 , G01S7/00 , H02J50/30 , H04B10/80 , G01V8/22 , G01S17/88 , G01S7/484 , H01S5/00 , H01S5/062 , H01S5/42 , H02J50/60 , H04B10/114 , G01S17/04 , G01S17/89 , H02J50/10 , H02J50/90 , G01S17/06
摘要： A power beaming system includes a power beam transmitter arranged to transmit the power beam, and a power beam receiver arranged to receive the power beam from the power beam transmitter. A power beam transmission source is arranged to generate a laser light beam for transmission by the power beam transmitter from a first location toward a remote second location. A beam-shaping element shapes the laser light beam, at least one diffusion element uniformly distributes light of the shaped laser light beam, and a projection element illuminates a power beam receiving element of predetermined shape with the shaped laser light beam. At the power beam receiver, a diffusion surface diffuses a portion the power beam specularly reflected from the power beam receiver.
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