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公开(公告)号：WO2016125155A1
公开(公告)日：2016-08-11
申请号：PCT/IL2016/050119
申请日：2016-02-02
申请人： WI-CHARGE LTD.
发明人： ALPERT, Ortal , RONEN, Eitan , NAHMIAS, Omer , MOR, Ori , GOLAN, Lior , SAGI, Ran
IPC分类号： H01S3/08
CPC分类号： H01S3/082 , H01S3/0604 , H01S3/08063 , H01S3/0815 , H01S3/0816
摘要： A laser system involving coupled distributed resonators disposed serially, with the lasing gain medium located in the main resonator and the output of that resonator being directed into a free space resonator, such that the main resonator output mirror is effectively the free space resonator. The distributed resonators end mirrors are retroreflectors. Interference occurs between light traveling towards the remote mirror of the free space resonator and light reflected therefrom, generating regions of high reflectivity. The coupling of the free space resonator to the regions of high reflectivity of the free space resonator enables the first resonator to lase efficiently, even though the true reflectivity of the main resonator output mirror outside of those regions is insufficient to enable efficient lasing, if at all. This coupled resonator structure enables lasing to occur with a high field of view and the high gain engendered by the high reflectivity regions.
摘要翻译： 包括耦合分布式谐振器的激光系统，其串联设置，激光增益介质位于主谐振器中，并且该谐振器的输出被引导到自由空间谐振器中，使得主谐振器输出反射镜实际上是自由空间谐振器。 分布式谐振器端镜是后向反射器。 在朝向自由空间谐振器的远镜反射的光和从其反射的光之间发生干涉，产生高反射率的区域。 自由空间谐振器与自由空间谐振器的高反射率区域的耦合使得第一谐振器能够有效地发光，即使这些区域之外的主谐振器输出反射镜的真实反射率不足以实现有效的激光，如果在 所有。 该耦合谐振器结构使得能够以高视场和由高反射率区域产生的高增益发生激光。
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公开(公告)号：WO2022224258A1
公开(公告)日：2022-10-27
申请号：PCT/IL2022/050412
申请日：2022-04-21
申请人： WI-CHARGE LTD.
发明人： MOR, Ori , ALPERT, Ortal , SIMON, Nir , GOLAN, Lior
摘要： A system for safe transmission of an RF electromagnetic power beam to a receiver for conversion into electric power. The receiver has an antenna array for receiving the RF beam and electrical circuitry to receive a corresponding RF electrical current from the antenna array. The circuitry includes a converter for generating DC current from the RF electrical current, and includes at least one component that reflects part of the RF current back towards the antenna array. This converts the reflected portion of the RF electrical current into a retransmitted RF electromagnetic beam having the same frequency as the RF electromagnetic power beam, and is directed back towards the transmitter. The receiver monitors the reflected RF current, and transmits a proportional signal back to a controller. The controller reduces the transmitted power beam if its interference with the retransmitted beam would generate a field intensity above a safe level.
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公开(公告)号：WO2020148772A1
公开(公告)日：2020-07-23
申请号：PCT/IL2020/050076
申请日：2020-01-17
申请人： WI-CHARGE LTD
发明人： ALPERT, Ortal , BIDERMAN, Yoav , MOR, Ori , NAHMIAS, Omer , GOLAN, Lior , SAGI, Ran , LEVIN, Zohar , SLEPOY, Alexander , ROSH, Yan , CONFORTI, Eyal
摘要： A system for ensuring the integrity of the enclosure of a wireless power transmitter. The enclosure of the transmitter comprises a window in order to allow a high-power beam to exit the transmitter. The window is equipped with an area which reflects at least a portion of the beam, and directs the reflected beam onto a detector. Thus the system can ascertain whether the window is undamaged, since if the detector is receiving a satisfactory portion of the beam, then it is indicative of an undamaged window. This advantageously prevents dangerous beam generated damage which may be caused if the exit window of the transmitter is damaged. The laser beam is preferably circularly polarized before exiting the transmitter to prevent dangerous laser damage caused by the reflections of the maximum of the P or S polarization components, which may occur with linearly polarized beams.
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公开(公告)号：WO2023084514A1
公开(公告)日：2023-05-19
申请号：PCT/IL2022/051195
申请日：2022-11-09
申请人： WI-CHARGE LTD.
发明人： NAHMIAS, Omer , ALPERT, Ortal , SHAPIR, Ilanit , GOLAN, Lior , SLEPOY, Alexander , ROSH, Yan , MOR, Ori , ZLATKIN, Eli , SIMON, Nir
摘要： Systems for the aiming of a laser beam of wireless power towards the photovoltaic cell of a receiver, using an adjustable beam deflection unit, enabling accurate orientation of the mirror used to deflect the laser beam. Insufficient aiming accuracy may result in the spilling over of beam energy intended for absorption by the photovoltaic cell, into the surroundings. The criteria of accuracy and stability required of an electronically controlled beam aiming mirror must be such that the angular deviation of a beam, from the direction intended by the electronic control, is such that the level of optical power transferred into the surroundings, when a beam having the maximum power which the system can transmit is aimed at the target, does not exceed that allowed by a regulatory requirement. One common regulation limits the allowed dissipated power to the power of a class 3B laser.
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公开(公告)号：WO2021084544A1
公开(公告)日：2021-05-06
申请号：PCT/IL2020/051135
申请日：2020-11-01
申请人： WI-CHARGE LTD
发明人： CONFORTI, Eyal , GOLAN, Lior , NAHMIAS, Omer , MILLS-LEVIN, Zohar , SAGI, Ran , ALPERT, Ortal , MOR, Ori
摘要： A system for measuring the power of a laser beam, comprising an essentially opaque enclosure, from which the laser beam is directed through an exit aperture. The enclosure contains a beam splitter configured to transmit a major part of the laser beam through the exit aperture, and to reflect a minor part of the laser beam; a diffuser element positioned such that the reflected minor part of the laser beam impinges thereon; at least one detector element in optical communication with the diffuser element, the detector element providing a signal in response to the diffused light of the minor part of the laser beam impinging thereon; and an absorber element positioned such that that part of any light entering the enclosure through the exit aperture and reflected by the beam splitter, impinges on the absorber element, and is essentially absorbed.
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公开(公告)号：WO2019135226A1
公开(公告)日：2019-07-11
申请号：PCT/IL2019/050010
申请日：2019-01-02
申请人： WI-CHARGE LTD
发明人： BIDERMAN, Yoav , ALPERT, Ortal , MOR, Ori , NAHMIAS, Omer , GOLAN, Lior , SAGI, Ran , LEVIN, Zohar , SLEPOY, Alexander , ROSH, Yan , CONFORTI, Eyal
摘要： A system for transmitting wireless power from multiple sources to multiple receivers, in which the safety of the system is maintained in spite of the possibility that two beams may intersect in the transmission space, thereby generating power or power density levels which exceed those at which the safety mechanisms of the system were designed to operate. The paths of the beams are known from the transmission positions and directions, and from the positions and orientations of the receivers, as measured by positioning devices on them. When an intersection, or near intersection of beams is determined, the system is triggered to reduce the safety risk by attenuating or turning off, or by diverting, one or more of the beams. In addition, since a reflected beam's path may not be readily discernable, the system can ascertain if one of the beams has undergone a reflection, by looking for displayed mirror images.
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公开(公告)号：WO2019064305A1
公开(公告)日：2019-04-04
申请号：PCT/IL2018/051073
申请日：2018-09-28
申请人： WI-CHARGE LTD
发明人： ALPERT, Ortal , GOLAN, Lior , MOR, Ori , SAGI, Ran , NAHMIAS, Omer , ASHUSH, Yoram , BIDERMAN, Yoav , MILLS-LEVIN, Zohar , ROSH, Yan , CONFORTI, Eyal
CPC分类号： H04B10/807 , B60K1/00
摘要： A fail-safe wireless power transmission system having a transmitter, a receiver, a receiver functionality monitor unit, a transmitter functionality monitor unit and at least two sensors. The transmitter has at least one low emission state, and at least one high emission state, the high emission states having higher emissions and more complex safety systems. The transmitter may be precluded from switching from a low emission state to any high emission states upon detection of a receiver control unit malfunction, a transmitter control unit malfunction, a likelihood of human-accessible emission from the system greater than a predetermined level, or an inconsistency between results arising from at least two of the sensors. Two different methods of such preclusion may be used simultaneously or consecutively to improve reliability. A transmitter control unit analyzes data from the sensors, and performs calculations to determine if and what type of preclusion is needed.
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公开(公告)号：WO2018211506A1
公开(公告)日：2018-11-22
申请号：PCT/IL2018/050532
申请日：2018-05-15
申请人： WI-CHARGE LTD
发明人： ALPERT, Ortal , SAGI, Ran , MOR, Ori , GOLAN, Lior , BIDERMAN, Yoav , NAHMIAS, Omer , SLEPOY, Alexander , LEVIN, Zohar , CONFORTI, Eyal , ROSH, Yan
摘要： A safety supervision system for wireless power transmission, comprising a transmitter having an optical beam generator with safe states for transmitting power to receivers that convert the beam into electrical power. The system control unit stores previously known signatures categorized by predetermined parameters associated with one or more unwanted situations, stores data from sensors, compares this stored data to the signatures, and executes one or more responses based on this comparison. The system may comprise transmitter and/or receiver malfunction detection systems adapted to monitor the transmitter and receiver control units and to cause the optical beam generator to switch to a safe state upon detection of a transmitter or receiver control unit malfunction, and may further comprise a hazard detection system preventing human exposure to beam intensity above a predefined safe level.
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公开(公告)号：WO2016125156A1
公开(公告)日：2016-08-11
申请号：PCT/IL2016/050120
申请日：2016-02-02
申请人： WI-CHARGE LTD.
发明人： ALPERT, Ortal , COHEN, Yoni , MOR, Ori , NAHMIAS, Omer , RONEN, Eitan , GOLAN, Lior
IPC分类号： H04B10/00
CPC分类号： H04B10/807 , H04B10/69
摘要： A receiver for receiving an incident beam of optical power from a remote transmitter over a predefined field of view, comprising an input lens having a high durability coating that can withstand domestic handling and contamination. Such a high durability coating may reflect a non-insignificant part of the light incident thereon. Behind the lens, there is fitted a retroreflector disposed such that it reflects that part of the incident beam traversing the lens, back through the lens to the transmitter. Reflections from the front surface of the lens impinge on one or more transparent beam catchers appropriately located, and equipped with energy conversion devices, such as photovoltaic cells, to convert light from the reflections of the incident beam into electricity. Additional energy conversion devices may be located inward of the lens, to collect and convert reflections from the inner surface of the lens, of light returning from the retroreflector.
摘要翻译： 一种接收器，用于在预定义的视场内从远程发射器接收入射光束的光束，该接收器包括具有高耐久性涂层的输入透镜，所述耐用涂层能够经受住家庭的处理和污染。 这样高的耐久性涂层可以反射入射在其上的光的非微不足道的部分。 在镜头的后面，安装有后向反射器，其被布置成使得其反射穿过透镜的入射光束的那部分，通过透镜返回到发射器。 透镜前表面的反射撞击一个或多个适当定位的透明光束捕获器，并配备有诸如光伏电池的能量转换装置，以将来自入射光束的反射的光转换成电。 附加的能量转换装置可以位于透镜的内部，以从透镜的内表面收集和转换从后向反射器返回的光的反射。
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