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公开(公告)号：US12003118B2
公开(公告)日：2024-06-04
申请号：US17745359
申请日：2022-05-16
申请人： Wi-Charge Ltd.
发明人： Yoav Biderman , Ortal Alpert , Ori Refael Mor , Omer Nahmias , Lior Golan , Ran Sagi , Zohar Levin , Alexander Slepoy , Yan Rosh , Eyal Conforti
CPC分类号： H02J50/60 , H02J50/30 , H02J50/80 , H02J50/90 , H02J2310/12
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：US11356183B2
公开(公告)日：2022-06-07
申请号：US16084719
申请日：2017-03-14
申请人： WI-CHARGE LTD.
发明人： Lior Golan , Alexander Slepoy , Omer Nahmias , Ran Sagi , Ortal Alpert , Ori Refael Mor
IPC分类号： H02J50/30 , H04B10/80 , H02J50/60 , H01S3/00 , H01S3/042 , H01S3/09 , H01S3/13 , H01S3/16 , H01S5/00 , H01S5/024 , H01S5/042 , H01S5/0683 , H01S5/34
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：US11322991B2
公开(公告)日：2022-05-03
申请号：US16613533
申请日：2018-05-15
申请人： Wi-Charge Ltd.
发明人： Ortal Alpert , Ran Sagi , Ori Refael Mor , Lior Golan , Yoav Biderman , Omer Nahmias , Alexander Slepoy , Zohar Levin , Eyal Conforti , Yan Rosh
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：US10790632B2
公开(公告)日：2020-09-29
申请号：US16257244
申请日：2019-01-25
申请人： Wi-Charge Ltd.
发明人： Ortal Alpert , Eitan Ronen , Omer Nahmias , Ori Refael Mor , Lior Golan , Ran Sagi
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.
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公开(公告)号：US20170358958A1
公开(公告)日：2017-12-14
申请号：US15670596
申请日：2017-08-07
申请人： Wi-Charge Ltd.
发明人： Ori Refael Mor , Ortal Alpert , Alexander Slepoy , Lior Golan , Ran Sagi , Vadim Shmukler , Eitan Ronen , Omer Nahmias , Victor Vaisleib
CPC分类号： H02J50/30 , H02J5/005 , H02J7/025 , H02J17/00 , H04B10/807
摘要： A system for optical wireless power transmission to a power receiving apparatus generally situated in a mobile electronic device. The transmitter has an optical resonator with end reflectors and a gain medium positioned between them, such that an optical beam is generated. The frequency of the beam is selected such that it is absorbed by almost all transparent organic materials in general use. A beam steering unit on the transmitter can direct the beam in any of a plurality of directions, and the beam is absorbed on the receiver by means of an optical-to-electrical power converter, through a low reflection surface. The band gap of this power converter is selected to be smaller than that of the gain medium. The receiver has a voltage converter including an inductor, an energy storage device and a switch. A beam steerer controller ensures that the beam impinges on the receiver.
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公开(公告)号：US09742223B2
公开(公告)日：2017-08-22
申请号：US15069384
申请日：2016-03-14
申请人： Wi-Charge Ltd.
发明人： Ori Refael Mor , Ortal Alpert , Alexander Slepoy , Lior Golan , Ran Sagi , Vadim Shmukler , Eitan Ronen , Omer Nahmias , Victor Vaisleib
CPC分类号： H02J50/30 , H02J5/005 , H02J7/025 , H02J17/00 , H04B10/807
摘要： A system for optical wireless power transmission to a power receiving apparatus generally situated in a mobile electronic device. The transmitter has an optical resonator with end reflectors and a gain medium positioned between them, such that an optical beam is generated. The frequency of the beam is selected such that it is absorbed by almost all transparent organic materials in general use. A beam steering unit on the transmitter can direct the beam in any of a plurality of directions, and the beam is absorbed on the receiver by means of an optical-to-electrical power converter, through a low reflection surface. The band gap of this power converter is selected to be smaller than that of the gain medium. The receiver has a voltage converter including an inductor, an energy storage device and a switch. A beam steerer controller ensures that the beam impinges on the receiver.
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7.发明授权公开(公告)号：US09653949B2
公开(公告)日：2017-05-16
申请号：US15095373
申请日：2016-04-11
申请人： WI-CHARGE LTD.
发明人： Ortal Alpert , Rudiger Paschotta
IPC分类号： H04B1/02 , H02J50/30 , H01S3/00 , H01S3/083 , H04B10/114 , H04B10/80 , H01S5/10 , H01S3/08 , H01S3/06 , H04B1/04 , H01S5/04 , H01S5/14 , H01S3/0941 , H01S5/183 , H01S3/13
CPC分类号： H02J50/30 , H01S3/005 , H01S3/0604 , H01S3/0805 , H01S3/08059 , H01S3/08072 , H01S3/083 , H01S3/0941 , H01S3/1307 , H01S5/041 , H01S5/10 , H01S5/14 , H01S5/183 , H04B10/114 , H04B10/807 , H04B2001/0416
摘要： An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.
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公开(公告)号：US20170018976A1
公开(公告)日：2017-01-19
申请号：US15069384
申请日：2016-03-14
申请人： Wi-Charge Ltd.
发明人： Ori Refael Mor , Ortal Alpert , Alexander Slepoy , Lior Golan , Ran Sagi , Vadim Shmukler , Eitan Ronen , Omer Nahmias , Victor Vaisleib
CPC分类号： H02J50/30 , H02J5/005 , H02J7/025 , H02J17/00 , H04B10/807
摘要： A system for optical wireless power transmission to a power receiving apparatus generally situated in a mobile electronic device. The transmitter has an optical resonator with end reflectors and a gain medium positioned between them, such that an optical beam is generated. The frequency of the beam is selected such that it is absorbed by almost all transparent organic materials in general use. A beam steering unit on the transmitter can direct the beam in any of a plurality of directions, and the beam is absorbed on the receiver by means of an optical-to-electrical power converter, through a low reflection surface. The band gap of this power converter is selected to be smaller than that of the gain medium. The receiver has a voltage converter including an inductor, an energy storage device and a switch. A beam steerer controller ensures that the beam impinges on the receiver.
摘要翻译： 一种用于向通常位于移动电子设备中的电力接收设备的光无线电力传输的系统。 发射机具有带有端反射器的光学谐振器和位于它们之间的增益介质，从而产生光束。 选择光束的频率使其被几乎所有通常使用的透明有机材料吸收。 发射机上的光束转向单元可以在多个方向中的任何一个方向上引导光束，并且通过光 - 电功率转换器通过低反射表面将光束吸收在接收器上。 该功率转换器的带隙被选择为小于增益介质的带隙。 接收器具有电压转换器，其包括电感器，能量存储装置和开关。 光束转向器控制器确保光束照射在接收器上。
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9.发明授权公开(公告)号：US09312660B2
公开(公告)日：2016-04-12
申请号：US14016151
申请日：2013-09-02
申请人： WI-CHARGE LTD.
发明人： Ortal Alpert , Rudiger Paschotta
IPC分类号： H01J3/14 , G06M7/00 , H04B10/00 , H01S5/10 , H01S3/00 , H01S3/083 , H04B10/114 , H04B10/80 , H01S3/08 , H01S3/06 , H04B1/04 , H01S5/04 , H01S5/14 , H01S3/0941 , H01S5/183 , H01S3/13
CPC分类号： H02J50/30 , H01S3/005 , H01S3/0604 , H01S3/0805 , H01S3/08059 , H01S3/08072 , H01S3/083 , H01S3/0941 , H01S3/1307 , H01S5/041 , H01S5/10 , H01S5/14 , H01S5/183 , H04B10/114 , H04B10/807 , H04B2001/0416
摘要： An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.
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公开(公告)号：US20240195227A1
公开(公告)日：2024-06-13
申请号：US18556203
申请日：2022-04-21
申请人： Wi-Charge Ltd.
发明人： Ori Refael Mor , Ortal Alpert , Nir Simon , Lior Golan
CPC分类号： H02J50/402 , H02J50/23 , H02J50/80 , H02J50/90
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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