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公开(公告)号：US20230083178A1
公开(公告)日：2023-03-16
申请号：US18057758
申请日：2022-11-21
Inventor： TAKAMASA ANDO , SHUNSUKE IMAI , HITOSHI TOMINAGA
IPC: G01S7/4865 , G01S7/481 , G01S17/10 , G01S7/4861
Abstract: A measurement apparatus includes first and second light sources, a diffuser, a photodetector, and a processing circuit. The first and second light sources respectively output first emitted light and second emitted light. The mirror causes the first emitted light and the second emitted light to be concentrated and incident on one region of the diffuser. The photodetector detects first reflected light and second reflected light that emanate from a subject due to the first emitted light and the second emitted light diffused by the diffuser, respectively. The processing circuit generates and outputs information related to the subject, based on the result of detection of the first reflected light and the second reflected light by the photodetector. The distance between two light spots respectively formed on the one region by the first emitted light and the second emitted light is less than the distance between the first and second light sources.
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公开(公告)号：US20230414142A1
公开(公告)日：2023-12-28
申请号：US18462449
申请日：2023-09-07
Inventor： HIROTO YANAGAWA , HITOSHI TOMINAGA , YUMIKO OHNO , SHUNSUKE IMAI , TSUGUHIRO KORENAGA , YUKIKO UCHIDA
CPC classification number: A61B5/165 , A61B5/02405 , A61B5/026 , A61B5/74
Abstract: A method for estimating an emotional state is executed by a computer and includes acquiring an amount of change of a cerebral blood flow of a user from a reference time, acquiring an amount of change of a heart rate of the user from a reference time, and outputting a signal indicating that the user is in an excited state in a case where the amount of change of the cerebral blood flow is smaller than a first threshold value and the amount of change of the heart rate is larger than a second threshold value.
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公开(公告)号：US20220400964A1
公开(公告)日：2022-12-22
申请号：US17820266
申请日：2022-08-17
Inventor： SHUNSUKE IMAI , TAKAMASA ANDO , HITOSHI TOMINAGA
Abstract: A measurement apparatus includes a light source, a sensor including light detection cells including a first light detection cell and a second light detection cell, and an electronic circuit. The circuit causes the light source to emit a light pulse, causes the first light detection cell to detect a reflected light pulse from a target in an exposure period including at least part of a period from when an intensity of the reflected light pulse starts increasing to when it starts falling and generate a first signal, causes the second light detection cell to detect the reflected light pulse in an exposure period including at least part of a trailing period from when the intensity of the reflected light pulse starts falling to when it stops falling and generate a second signal. The circuit generates, based on the first and second signals, data representing states of the target.
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公开(公告)号：US20220326361A1
公开(公告)日：2022-10-13
申请号：US17809029
申请日：2022-06-27
Inventor： TAKAMASA ANDO , SHUNSUKE IMAI
IPC: G01S7/4865 , G01S17/10 , G01S17/89
Abstract: A distance-measuring device includes a light source, a light detector, and a circuit. The circuit causes the light source to output a light pulse toward a target object, causes the light detector to detect a reflection-light pulse in a first period and a second period to generate a first signal and a second signal, respectively, and generates and outputs data indicating a distance from the light detector to the target object based on the two signals. The first period includes at least a part of a rise period, from a first point at which an intensity of the reflection-light pulse starts increasing to a second point at which the increase ends, and the first point. The second period includes at least a part of a fall period, from a third point at which the intensity starts decreasing to a fourth point at which the decrease ends, and the fourth point.
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