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公开(公告)号：US12127842B2
公开(公告)日：2024-10-29
申请号：US17403029
申请日：2021-08-16
申请人： Genetesis, Inc.
发明人： Vineet Erasala , Jon Von Stein , Tatiana Sedlak , Julia Prince
CPC分类号： A61B5/243 , A61B5/245 , G01R33/26 , A61B2562/0223
摘要： Devices and systems as described herein is configured to sense a signal, such as a signal from an individual. In some embodiments, a signal is a magnetic field. In some embodiments, a source of a signal is an individual's organ, such as a heart muscle. A device or system, in some embodiments, comprises one or more sensors, such as an array of sensors configured to sense the signal. A device or system, in some embodiments, comprises a shield or portion thereof to reduce noise and enhance signal collection.
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2.发明公开公开(公告)号：US20240329168A1
公开(公告)日：2024-10-03
申请号：US18551239
申请日：2021-07-02
发明人： Peixian MIAO , Yanchao SHI , Dayong CHEN , Jiqing LIAN , Jinhai ZHANG , Jianxiang WANG , Shiyu YANG , Hao FENG , Yuhua XIAO , Hongwei ZHU , Hu DAI , Jun YANG , Jianhui TU , Wei YANG , Jingzhong CUI , Jiang CHEN , Zhidong LIU
IPC分类号： G01R33/26
CPC分类号： G01R33/26
摘要： Provided are an experimental apparatus and method for regulating and controlling the Zeeman transition of magnetic resonance. The method includes: generating a constant background magnetic field by using a magnetic shielding cylinder, a background magnetic field coil, and a constant current source, and controlling a Larmor precession frequency corresponding to the background magnetic field to be equal to a frequency of a sinusoidal signal output by a radio frequency signal source; adjusting the amplitude of a signal output by a radio frequency signal source of a pump-probe atomic magnetometer to set a radio frequency signal to be a π/2 pulse or a π pulse; and then controlling the radio frequency signal source to output a series of sinusoidal radio frequency pulse strings having the same initial phase. The Zeeman transition of magnetic resonance is regulated and controlled by adjusting the time interval between the radio frequency pulse signals.
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公开(公告)号：US20240280653A1
公开(公告)日：2024-08-22
申请号：US18582461
申请日：2024-02-20
申请人： Elta Systems Ltd.
发明人： Igor SHCHERBACK , Dmitriy TOKAR
IPC分类号： G01R33/26
CPC分类号： G01R33/26
摘要： An optical magnetometer system and method for operation thereof are described. The optical magnetometer system comprises: at least one light source emitting one or more illumination beams and scanning frequency of illumination beams over a selected range; at least one vapor cell having alkali atoms positioned within path of the illumination beam; a detection unit position to collect beam passing though the vapor cell; at least one thermal unit positioned to vary temperature of the vapor cell; and a controller configured and operable for obtaining detection data from the detection unit and for operating said at least one thermal unit in a feedback loop, and wherein said feedback loop being directed at maintaining a relation between optical intensity measured at one of more measurement points associated with selected frequencies and detuning level at the one or more measurement points from Larmor frequency of the optical magnetometer system.
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公开(公告)号：US20240272251A1
公开(公告)日：2024-08-15
申请号：US18631958
申请日：2024-04-10
申请人： Twinleaf LLC
IPC分类号： G01R33/26
CPC分类号： G01R33/26
摘要： Aspects of a pulsed pump magnetometer improve upon previous pulsed pump magnetometers and gradiometers with the following features: the pumping is aided with a pulsed field coil parallel to the pump light, the pump laser module uses a pulse driver circuit integrated into the sensor, the pump laser module uses a wavelength selective element integrated in the laser module but separate from the emitter, and the sensor geometry is arranged so that the dead axis can be easily reoriented by rotating the long axis of the sensor. A preferred sensor geometry, with the pump axis perpendicular to the long edge of the sensor, allows a sensor to be easily rotated to avoid a low signal condition.
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公开(公告)号：US12044639B2
公开(公告)日：2024-07-23
申请号：US17627401
申请日：2020-07-17
CPC分类号： G01N24/006 , G01R33/26
摘要： An atomic magnetometer system is disclosed that includes a variable magnetic field source (14) configured to provide an oscillating primary magnetic field to cause a sample (16) to produce a secondary magnetic field. The atomic magnetometer system also includes an atomic magnetometer for detecting the secondary magnetic field. The atomic magnetometer includes an atomic specimen, a pump and probe subsystem configured to pump the atomic specimen to create a polarisation and to probe atomic coherence precession within the atomic specimen with a probe beam, a detector configured to detect the probe beam to produce a detection signal. The system is configured to drive the variable magnetic field source (14) in dependence on the detection signal with a frequency tuned to rf resonance. A method of operating an atomic magnetometer is also disclosed.
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公开(公告)号：US20240085501A1
公开(公告)日：2024-03-14
申请号：US17766926
申请日：2020-10-06
IPC分类号： G01R33/26
CPC分类号： G01R33/26
摘要： Disclosed is a method of generating atomic spin orientation in an atomic ensemble. The method includes providing a steady magnetic field (5) to the atomic ensemble to cause a Zeeman splitting within first and second manifolds of the ground state of the atomic energy levels of the atomic ensemble. The method includes pumping the atomic ensemble with an electromagnetic optical radiation beam, the beam being detuned from a transition involving the first manifold such that a majority of the atomic population of the first manifold in the atomic ensemble is transferred from the first manifold into a magnetic Zeeman sublevel of the second manifold. A system for generating an atomic spin orientation in a 15 atomic ensemble is also disclosed.
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公开(公告)号：US11914012B2
公开(公告)日：2024-02-27
申请号：US17346468
申请日：2021-06-14
IPC分类号： A61B5/245 , A61B5/055 , G01R33/26 , G01R33/48 , G01R33/032 , G01R33/421 , A61B5/00 , G01R33/00
CPC分类号： G01R33/4806 , A61B5/0042 , A61B5/055 , A61B5/245 , A61B5/6803 , G01R33/0017 , G01R33/032 , G01R33/26 , G01R33/4215 , A61B2562/0223 , A61B2562/182 , G01R33/0076
摘要： A brain measurement apparatus includes: a magnetoencephalograph including optically pumped magnetometers, magnetic sensors for measuring a static magnetic field at positions of the optically pumped magnetometers, and a nulling coil for canceling the static magnetic field; an MRI apparatus including a permanent magnet, a gradient magnetic field coil, a transmission coil, and a receive coil for detecting a nuclear magnetic resonance signal; and a control device that, when measuring the brain's magnetic field, controls a current to be supplied to the nulling coil based on measured values of the magnetic sensors and operates so as to cancel a static magnetic field at the position of each of the optically pumped magnetometers and, when measuring an MR image, controls the gradient magnetic field by controlling a current to be supplied to the gradient magnetic field coil and generates an MR image based on an output of the receive coil.
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公开(公告)号：US20240019510A1
公开(公告)日：2024-01-18
申请号：US17813167
申请日：2022-07-18
申请人： William Goodman
发明人： William Goodman
IPC分类号： G01R33/26
CPC分类号： G01R33/26
摘要： A magnetometer includes a magnetically isolated chamber having an opening to receive a sample; one or more Optically Pumped Magnetometer (OPM) sensors positioned inside the magnetically isolated chamber; an actuator mounted on a frame, the actuator moving an end portion in and out of the magnetically isolated chamber; and a sample holder coupled to the end portion.
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公开(公告)号：US20240004002A1
公开(公告)日：2024-01-04
申请号：US18239663
申请日：2023-08-29
申请人： X Development LLC
CPC分类号： G01R33/323 , G01N24/10 , G01R33/26
摘要： A magnetometer includes a sample signal device; a reference signal device; a microwave field generator operable to apply a microwave field to the sample signal device and the reference signal device; an optical source configured to emit light including light of a first wavelength that interacts optically with the sample signal device and with the reference signal device; at least one photodetector arranged to detect a sample photoluminescence signal including light of a second wavelength emitted from the sample signal device and a reference photoluminescence signal including light of the second wavelength emitted from the reference signal device, in which the first wavelength is different from the second wavelength; and a magnet arranged adjacent to the sample signal device and the reference signal device.
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公开(公告)号：US20230349989A1
公开(公告)日：2023-11-02
申请号：US17794955
申请日：2021-01-25
发明人： Bernd Burchard , Jan Meijer , Arthur Rönisch , Robert Staacke
CPC分类号： G01R33/26 , G01R33/0052 , G01R33/323 , G01R33/3621 , G06N10/40 , G01V3/30
摘要： A scalar magnetometer includes a sensor element, a circuit carrier, a pump radiation source, a radiation receiver and evaluation means. The pump radiation source emits pump radiation. The sensor element preferably includes one or more NV centers in diamond as paramagnetic centers. This paramagnetic center emits fluorescence radiation when irradiated with pump radiation. The radiation receiver converts a intensity signal of the fluorescence radiation into a receiver output signal. The evaluation means detects and/or stores and/or transmits the value of the receiver output signal. The material of the circuit carrier is preferably transparent for the pump radiation in the radiation path between pump radiation source and sensor element and transparent for the fluorescence radiation in the radiation path between sensor element and radiation receiver. The components sensor element, pump radiation source, radiation receiver and evaluation means are preferably mechanically attached to the circuit carrier .
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