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公开(公告)号：WO2019224827A1
公开(公告)日：2019-11-28
申请号：PCT/IL2019/050587
申请日：2019-05-23
申请人： WI-CHARGE LTD
发明人： BIDERMAN, Yoav , ALPERT, Ortal , MOR, Ori Refael , NAHMIAS, Omer , GOLAN, Lior , SAGI, Ran , LEVIN, Zohar , SLEPOY, Alexander , ROSH, Yan , CONFORTI, Eyal
IPC分类号： H04B10/112 , H02J50/60
摘要： A wireless power transmitter system for directing a high energy beam towards receivers fitted with identifying signs. One type of the identifying signs may have asymmetric shape properties, such that their mirror image cannot be matched to their actual shape, even after the image is rotated, tilted or otherwise geometrically manipulated. The system can thus determine whether a detected image of a sign is a true image received directly from said receiver, or is received after the imaged beam has undergone a reflection between the receiver and the transmission system. In the latter case, the system can prevent high power transmission from being directed to a location other than a real receiver, which could be a safety hazard. Other types of identifying signs may be located in or on the borders of different zones of a transmission space, to identify zones where transmission may be allowed or prohibited.
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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：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：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：WO2017033192A1
公开(公告)日：2017-03-02
申请号：PCT/IL2016/050927
申请日：2016-08-24
申请人： WI-CHARGE LTD.
发明人： SAGI, Ran , MOR, Ori Refael , GOLAN, Lior , NAHMIAS, Omer , RONEN, Eitan , ALPERT, Ortal
CPC分类号： H02J50/30 , H02J7/025 , H02J50/80 , H02J50/90 , H02J2007/0001 , H02J2007/0096 , H04B10/807
摘要： A system for transmission of power into a space, comprising one or more transmitters and several portable receivers which can receive power transmitted. Receivers can transmit data back to transmitters regarding their power needs, based on the state of charge of their batteries. A transmission protocol exists whereby each transmitter can detect legitimate receivers within its field of view and transmit a first amount of energy to any such receiver, which may report receiving that energy back to a transmitter, together with data relating to its power needs. Transmitters can deny power transmission to some receivers based on the data received from a reporting receiver. The first amount of energy transmitted may be used to power up a sleeping receiver, before transmission of useful amounts of power, if allowed by the protocol. Other aspects of the transmission protocol relate to the division of available power between requesting receivers.
摘要翻译： 一种用于将功率传输到空间中的系统，包括一个或多个发射机和可接收发射功率的几个便携式接收机。 接收机可以根据电池的充电状态将数据发送回发射机，以了解电力需求。 存在一种传输协议，其中每个发射机可以检测其视野内的合法接收机，并将第一数量的能量发送到任何这样的接收机，这些接收机可以将接收到该能量的报告连同其功率需求相关的数据报告给发射机。 发射机可以基于从报告接收机接收到的数据来拒绝对某些接收机的电力传输。 如果协议允许，则在发送有用量的功率之前，所传输的第一能量可以用于为睡眠接收机加电。 传输协议的其他方面涉及在请求接收者之间划分可用功率。
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公开(公告)号：WO2017179051A3
公开(公告)日：2017-10-19
申请号：PCT/IL2017/050438
申请日：2017-04-09
申请人： WI-CHARGE LTD.
发明人： SLEPOY, Alexander , GOLAN, Lior , NAHMIAS, Omer , SAGI, Ran , ALPERT, Ortal , MOR, Ori Refael
摘要： A system incorporating safety features, for optical power transmission to receivers, comprising an optical resonator having end reflectors and a gain medium, a driver supplying power to the gain medium, and controlling its small signal gain, a beam steering apparatus and a controller to control at least the beam steering apparatus and the driver. The controller responds to a safety risk occurring in the system, by outputting a command to change at least some of the small signal gain of the gain medium, the radiance of the optical beam, the power supplied by the driver, the scan speed or the scan direction and position of the beam steering apparatus, or to register the scan pose which defines the location of said optical-to-electrical power converter. The controller may also ensure a high overall radiance efficiency, and may warn of transmitted power not received by a targeted receiver.
摘要翻译： 包括用于向接收器的光功率传输的安全特征的系统，其包括具有端反射器和增益介质的光学共振器，向增益介质供应功率的驱动器，以及控制其小信号增益，a 以及至少控制所述光束导向装置和所述驱动器的控制器。 控制器通过输出命令以改变增益介质的小信号增益，光束的辐射率，由驱动器提供的功率，扫描速度或 扫描光束转向设备的方向和位置，或者登记限定所述光电功率转换器的位置的扫描姿态。 控制器还可以确保高整体辐射效率，并且可以警告未被目标接收器接收的发射功率。
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公开(公告)号：WO2017179051A2
公开(公告)日：2017-10-19
申请号：PCT/IL2017/050438
申请日：2017-04-09
申请人： WI-CHARGE LTD.
发明人： SLEPOY, Alexander , GOLAN, Lior , NAHMIAS, Omer , SAGI, Ran , ALPERT, Ortal , MOR, Ori Refael
摘要： A system incorporating safety features, for optical power transmission to receivers, comprising an optical resonator having end reflectors and a gain medium, a driver supplying power to the gain medium, and controlling its small signal gain, a beam steering apparatus and a controller to control at least the beam steering apparatus and the driver. The controller responds to a safety risk occurring in the system, by outputting a command to change at least some of the small signal gain of the gain medium, the radiance of the optical beam, the power supplied by the driver, the scan speed or the scan direction and position of the beam steering apparatus, or to register the scan pose which defines the location of said optical-to-electrical power converter. The controller may also ensure a high overall radiance efficiency, and may warn of transmitted power not received by a targeted receiver.
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公开(公告)号：WO2017158605A1
公开(公告)日：2017-09-21
申请号：PCT/IL2017/050329
申请日：2017-03-14
申请人： WI-CHARGE LTD.
发明人： GOLAN, Lior , SLEPOY, Alexander , NAHMIAS, Omer , SAGI, Ran , ALPERT, Ortal , MOR, Ori Refael
IPC分类号： H04B10/80
摘要： A system incorporating safety features, for optical power transmission to receivers, comprising an optical resonator having end reflectors and a gain medium, a driver supplying power to the gain medium, and controlling its small signal gain, a beam steering apparatus and a controller to control at least the beam steering apparatus and the driver. The controller responds to a safety risk occurring in the system, by outputting a command to change at least some of the small signal gain of the gain medium, the radiance of the optical beam, the power supplied by the driver, the scan speed or the scan direction and position of the beam steering apparatus, or to register the scan pose which defines the location of said optical-to-electrical power converter. The controller may also ensure a high overall radiance efficiency, and may warn of transmitted power not received by a targeted receiver.
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公开(公告)号：WO2012172541A1
公开(公告)日：2012-12-20
申请号：PCT/IL2012/000230
申请日：2012-06-13
IPC分类号： H04B10/00
CPC分类号： H01S3/08054 , H01S3/0014 , H01S3/005 , H01S3/0604 , H01S3/0627 , H01S3/08 , H01S3/0805 , H01S3/0813 , H01S3/0815 , H01S3/1611 , H01S3/1643 , H02J3/383 , H02J50/30 , H04B10/807
摘要： A distributed resonator laser system using retro-reflecting elements, in which spatially separated retroreflecting elements define respectively a power transmitting and a power receiving unit. The retroreflectors have no point of inversion, so that an incident beam is reflected back along a path essentially coincident with that of the incident beam. This enables the distributed laser to operate with the beams in a co-linear mode, instead of the ring mode described in the prior art. This feature allows the simple inclusion of elements having optical power within the distributed cavity, enabling such functions as focusing/defocusing, increasing the field of view of the system, and changing the Rayleigh length of the beam. The optical system can advantageously be constructed as a pupil imaging system, with the advantage that optical components, such as the gain medium or a photovoltaic converter, can be positioned at such a pupil without physical limitations.
摘要翻译： 一种使用后向反射元件的分布式谐振器激光系统，其中空间分离的回射元件分别定义功率传输和功率接收单元。 后向反射器没有反转点，使得入射光束沿着基本上与入射光束重合的路径被反射回来。 这使得分布式激光器能够以共线模式操作光束，而不是现有技术中描述的环形模式。 该特征允许在分布腔内简单地包含具有光功率的元件，从而实现诸如聚焦/散焦，增加系统的视野和改变光束的瑞利长度的功能。 光学系统可以有利地被构造为光瞳成像系统，其优点是诸如增益介质或光伏转换器之类的光学组件可以在没有物理限制的情况下被定位在这样的瞳孔处。
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