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公开(公告)号：US12059270B2
公开(公告)日：2024-08-13
申请号：US17233033
申请日：2021-04-16
申请人： HI LLC
CPC分类号： A61B5/7203 , A61B5/0082 , A61B5/6803 , A61B5/7246 , G16H40/67 , A61B2562/0238
摘要： An illustrative optical measurement system includes a light source configured to emit light directed at a target within a user. The system further includes a detector configured to detect photon arrival times for photons of the light after the light is scattered by the target. The system further includes a processor configured to determine, based on the photon arrival times, histogram data associated with the target, the histogram data including noise. The processor is further configured to determine, based on the photon arrival times, a random matrix corresponding to the photon arrival times. The processor is further configured to determine, based on the random matrix, a noise distribution representing a distribution of the noise within the histogram data. The processor is further configured to generate clean histogram data using the noise distribution to filter at least a portion of the noise from the histogram data.
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2.发明公开公开(公告)号：US20240237942A1
公开(公告)日：2024-07-18
申请号：US18618725
申请日：2024-03-27
申请人： HI LLC
发明人： Scott Jeremy Seidman , Jennifer Rines , Ryan Field , Isai Olvera
CPC分类号： A61B5/6803 , A61B5/0059 , A61B5/6814 , G01J1/0425 , G01J1/4228 , G01J1/44 , G06F3/015 , A61B2562/0238 , G01J2001/4466
摘要： A wearable module for use in an optical measurement system includes a housing and a plurality of light-receiving members. The housing includes a target-side surface configured to face a surface of a body of a user when the wearable module is worn by the user. The plurality of light-receiving members protrude from the target-side surface of the housing and are configured to receive photons scattered by a target within the body of the user and guide the received photons toward a photodetector. An extent to which each of the plurality of light-receiving members protrudes from the target-side surface is adjustable such that, when the wearable module is worn by the user, each of the plurality of light-receiving members is in physical contact with the surface of the body.
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公开(公告)号：US20240197185A1
公开(公告)日：2024-06-20
申请号：US18588846
申请日：2024-02-27
申请人： HI LLC
发明人： Ryan Field , Katherine Perdue , Hamid Dehghani
CPC分类号： A61B5/0082 , A61B5/4064 , A61B5/6803 , G01B11/14 , A61B2562/0238 , A61B2576/026
摘要： An optical measurement system includes a light source configured to emit a first light pulse and a second light pulse toward a target, a detector, and a processing unit. The first light pulse has a first wavelength and the second light pulse has a second wavelength different from the first wavelength. The processing unit is configured to determine a plurality of temporal distributions of photons included in the first light pulse and the second light pulse and detected by the detector after the photons are scattered by the target, and determine, based on the plurality of temporal distributions and a source-detector distance estimation model, a distance between the light source and the detector.
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公开(公告)号：US20240193901A1
公开(公告)日：2024-06-13
申请号：US18583020
申请日：2024-02-21
申请人： HI LLC
IPC分类号： G06V10/141 , G02B27/01 , G06F18/10 , G06F18/2132 , G06F18/2135 , G06V10/14 , G06V10/147 , G06V10/50 , G06V10/75
CPC分类号： G06V10/141 , G02B27/0172 , G06F18/10 , G06F18/2132 , G06F18/2135 , G06V10/14 , G06V10/147 , G06V10/507 , G06V10/76 , G02B2027/014
摘要： An illustrative method includes accessing, by a computing device, a model simulating light scattered by a simulated target, the model comprising a plurality of parameters. The method further includes generating, by the computing device, a set of possible histogram data using the model with a plurality of values for the parameters. The method further includes determining, by the computing device, a set of components that represent the set of possible histogram data, the set of components having a reduced dimensionality from the set of possible histogram data.
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公开(公告)号：US11864867B2
公开(公告)日：2024-01-09
申请号：US17202554
申请日：2021-03-16
申请人： HI LLC
发明人： Alex Borisevich , Ryan Field
CPC分类号： A61B5/0082 , A61B5/4064 , A61B5/6803 , G01J1/44 , H01S5/062 , A61B2562/0238 , G01J2001/442 , G01J2001/4466
摘要： An exemplary system includes a light source and a control circuit configured to apply voltage having a first polarity to the light source for a first time period to provide a threshold charge for the light source to start an emission of a light pulse that is directed at a target within a body. The control circuit is further configured to apply voltage having a second polarity opposite the first polarity to the light source for a second time period subsequent to the first time period to discharge the light source to stop the emission of the light pulse.
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6.发明公开公开(公告)号：US20240000392A1
公开(公告)日：2024-01-04
申请号：US18370323
申请日：2023-09-19
申请人： HI LLC
发明人： Ryan Field , Bruno Do Valle , Jacob Dahle , Sebastian Sorgenfrei
IPC分类号： A61B5/00
CPC分类号： A61B5/7214 , A61B5/0082 , A61B5/6803 , A61B2576/026 , A61B2562/0238 , A61B2562/046
摘要： An illustrative system may include a memory storing instructions and a processor communicatively coupled to the memory and configured to execute the instructions to: cause a signal to be applied to a component within an optical measurement system; generate, based on a response of the component to the signal, characterization data representative of a timing uncertainty associated with the component; and perform, based on the characterization data, an action associated with the component.
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公开(公告)号：US11857316B2
公开(公告)日：2024-01-02
申请号：US16382461
申请日：2019-04-12
申请人： HI LLC
IPC分类号： A61B5/1455 , A61B5/00
CPC分类号： A61B5/14553 , A61B5/0042 , A61B5/0051 , A61B5/0066 , A61B5/0097 , A61B5/1455
摘要： In a non-invasive optical detection system and method, sample light is delivered into a scattering medium. A first portion of the sample light passing through a volume of interest exits the scattering medium as signal light, and a second portion of the sample light passing through a volume of non-interest exits the scattering medium as background light that is combined with the signal light to create a sample light pattern. Reference light is combined with the sample light pattern to create an interference light pattern having a holographic beat component. Ultrasound is emitted into the volume of non-interest in a manner that decorrelates the background light of the sample light pattern from the holographic beat component. The holographic beat component is detected during the measurement period. An optical parameter of the volume of interest is determined based on the detected holographic beat component.
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公开(公告)号：US11803018B2
公开(公告)日：2023-10-31
申请号：US17572404
申请日：2022-01-10
申请人： HI LLC
发明人： Argyrios Dellis , Ethan Pratt , Dakota Blue Decker , Kayla Wright-Freeman , Micah Ledbetter , Geoffrey Iwata
CPC分类号： G02B6/4226 , G02B6/32 , G02B6/4206 , H02N2/04
摘要： A light intensity modulator includes an input optical fiber; an output optical fiber; an optical arrangement having a lens, where the optical arrangement is configured to receive light from the input optical fiber, pass the light through the lens, and direct the light to the output optical fiber; and a piezoelectric device coupled to the lens, where the piezoelectric device is configured for moving the lens to alter overlap of the output optical fiber and the light directed to the output optical fiber to modulate intensity of light in the output optical fiber.
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公开(公告)号：US11801003B2
公开(公告)日：2023-10-31
申请号：US17160152
申请日：2021-01-27
申请人： HI LLC
发明人： Benjamin Shapiro , Ricardo Jimenez-Martinez , Julian Kates-Harbeck , Zachary Bednarke , Jamu Alford
CPC分类号： A61B5/245 , A61B5/6803 , A61B2562/0223 , A61B2562/046
摘要： At least one magnetic field actuator is configured for generating an actuated magnetic field that at least partially cancels an outside magnetic field, thereby yielding a total residual magnetic field. A plurality of magnetometers are configured for taking measurements of the total residual magnetic field. The magnetometers include a plurality of coarse magnetometers and a plurality of fine magnetometers. A processor is configured for acquiring the total residual magnetic field measurements from the coarse magnetometers, estimating the total residual magnetic field at the fine magnetometers based on total residual magnetic field measurements acquired from the plurality of coarse magnetometers, and controlling the actuated magnetic field at least partially based on the total residual magnetic field estimates at the fine magnetometers in a manner that suppresses the total residual magnetic field at the fine magnetometers to a baseline level, such that at least one of the fine magnetometers is in-range.
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公开(公告)号：US11717229B2
公开(公告)日：2023-08-08
申请号：US17109475
申请日：2020-12-02
申请人： HI LLC
发明人： Alejandro Ojeda , Husam Katnani
CPC分类号： A61B5/7214 , A61B5/0075 , A61B5/0082 , A61B5/024 , A61B5/725
摘要： A physiological activity detection system comprises a signal acquisition module configured for non-invasively acquiring a signal from an anatomical structure of a user, the acquired signal having a physiological-encoded component and a periodic artifact component that dominates the physiological-encoded component. The physiological activity detection system further comprises a phase-locked loop (PLL) component configured for estimating a phase of the periodic artifact component of the acquired signal, and generating a periodic reference signal having a phase representative of the estimated phase of the periodic artifact component of the acquired signal.
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