SIGNAL-TO-NOISE RATIO TARGETING
    33.
    发明公开

    公开(公告)号:US20230181118A1

    公开(公告)日:2023-06-15

    申请号:US17925037

    申请日:2021-06-08

    CPC classification number: A61B5/7203 A61B2560/0247

    Abstract: In an embodiment, a method (100) is described. The method comprises receiving (102) data corresponding to an ambient-corrected image of a subject illuminated by an illumination unit (206) providing temporally modulated illumination with a modulation frequency that is higher than a frame acquisition rate used by an imaging device (204) to obtain a set of images having a different spatial intensity modulation pattern in each image. The ambient-corrected image is constructed from the obtained set of images. The method (100) further comprises determining (104) a signal-to-noise ratio, SNR, of at least a portion of the ambient-corrected image. In response to determining that the SNR is below a target SNR, the method causes (106) an indication of an illumination parameter to be sent to the illumination unit to increase an amplitude modulation depth of the temporally modulated illumination used to illuminate the subject while the imaging device acquires a subsequent set of images for constructing a subsequent ambient-corrected image.

    AMBIENT LIGHT SUPPRESSION
    34.
    发明公开

    公开(公告)号:US20230171387A1

    公开(公告)日:2023-06-01

    申请号:US17922065

    申请日:2021-05-07

    CPC classification number: H04N9/74 H04N9/3194

    Abstract: According to an aspect, there is provided a system (200) comprising: an image projection unit (210) configured to project an illumination pattern onto at least a portion of a scene, an imaging unit (220) configured to capture a plurality of images of the scene while the illumination pattern is projected onto the scene, and a processing unit (230) configured to: demodulate the plurality of images based on the illumination pattern and with respect to a target section in the plurality of captured images, wherein the target section corresponds to one of: a portion of the scene on which the illumination pattern is selectively projected while the plurality of images were captured, a portion of the scene at which the projected illumination pattern is resolvable, a portion of the scene with pixel depth values which satisfy a predetermined range; and generate an ambient light supressed image of the scene based on results of the demodulation.

    ULTRASONIC HAIR STYLING
    36.
    发明申请

    公开(公告)号:US20180220765A1

    公开(公告)日:2018-08-09

    申请号:US15747969

    申请日:2016-07-28

    Abstract: A hair styler uses ultrasound at an ultrasound frequency of at least 1 MHz to get a non-chemical hair styling. Advantageously, the ultrasound frequency is between 1 and 100 MHz, preferably between 3 and 10 MHz, and more preferably between 3 and 5 MHz. The ultrasound energy is preferably applied at a power that is at least 1 W/cm2, and preferably does not exceed 10 W/cm2, such as 6 W/cm2. The invention may be used for hair curling and for hair straightening. A hair straightening method comprises temporarily straightening hair, and applying ultrasound to temporarily straightened hair to obtain straightened hair. Advantageously, ultrasound is applied during a period of between 5 seconds and 2 minutes, and preferably during about 10 seconds.

    NON-INVASIVE SKIN TREATMENT DEVICE USING R.F. ELECTRICAL CURRENT WITH A TREATMENT SETTINGS DETERMINER

    公开(公告)号:US20180133469A1

    公开(公告)日:2018-05-17

    申请号:US15563982

    申请日:2016-03-29

    CPC classification number: A61N1/328 A61B2018/0047 A61N1/06 A61N1/403

    Abstract: The invention provides a non-invasive skin treatment device (100) comprising an r.f. treatment electrode (10); a return electrode (40); an r.f. generator (20) configured and arranged such that, during treatment, an r.f. treatment signal is applied between the r.f. treatment electrode (10) and the return electrode (40) for heating an inner region (15) of skin; an impedance measurement circuit (35) configured and arranged to measure, before treatment of the inner region, an initial skin impedance (Zo) between the r.f. treatment electrode (10) and the return electrode (40); and a treatment settings determiner (30) configured and arranged to determine, before treatment of the inner region (15), treatment settings associated with the r.f. treatment signal depending on the initial skin impedance (Zo) and on a dimension of the r.f. treatment electrode (10) in the contact plane, the treatment settings comprising at least one of a treatment duration (TD) associated with a desired treatment result, and an r.f. electrical parameter associated with the r.f. treatment signal. The skin treatment device (100) further comprises a controller (25) configured and arranged to consecutively activate the impedance measurement circuit (35) and the treatment settings determiner (30) before treatment of the inner region (15), configure the r.f. generator (20) to provide the r.f. treatment signal according to the treatment settings, and activate the r.f. generator (20) to apply the r.f. treatment signal to the inner region (15) for the treatment duration (TD). The invention is based on the insight obtained from multiple measurements made during the creation of microscopic thermal lesions in an inner region of skin by applying r.f. measurement and treatment signals. By analyzing the histological and heating results, a relationship was obtained between the initial impedance (Zo), the dimension of the r.f. treatment electrode (10), and the treatment settings required to obtain a particular skin treatment result. This relationship has been found to be relatively constant for different subjects, different treatment locations on the body and different skin moisture contents. The invention makes it possible to preset or predetermine, i.e. in advance, the treatment duration (TD) and/or the r.f. electrical parameters associated with the r.f. treatment signal accurately enough to avoid undesired skin damage during the treatment. The device can be simpler, as it is no longer essential to continuously monitor the impedance during treatment to determine the onset of undesired skin damage, such as ablation, which is the safety feature known from conventional devices.

    TREATMENT DEVICE USING R.F. ELECTRICAL CURRENT FOR HEATING A FIRST INNER REGION AND A SECOND INNER REGION OF SKIN

    公开(公告)号:US20170202606A1

    公开(公告)日:2017-07-20

    申请号:US15324500

    申请日:2015-06-08

    Abstract: The invention provides a non-invasive treatment device (100) for heating a first (15) and a second (25) inner region of skin using r.f. electrical current, comprising: a first r.f. treatment electrode (10) configured and arranged to allow r.f. current to pass through the first inner region (15) to a return electrode (340), a second r.f. treatment electrode (20) configured and arranged to allow r.f. current to pass through the second inner region (25) to the return electrode (340), the device further being arranged such that the smallest distance between the first r.f. treatment electrode (10) and the return electrode (340) is less than the smallest distance between the second r.f. treatment electrode (20) and the return electrode (340); wherein the electrical skin contact area of the return electrode (340) is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode (10), and the electrical skin contact area of the second r.f. treatment electrode (20) is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode (10). By incorporating the second and first treatment electrodes in the same device, or probe, the positional relationship between the first and second regions being heated is fixed, or at least more predictable. By means of a suitable configuration, the regions may coincide to a smaller or greater degree. In some cases, the configuration may allow the same skin condition to be treated using heating of the first and second inner regions without moving the device over the skin. By providing an electrical skin contact area of the return electrode which is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode, the locations heated by the r.f. electrical current will be proximate to the first treatment electrode, reducing the possibility of undesirable hotspots proximate the return electrode (340).

    A SKIN TREATMENT DEVICE FOR MULTIPHOTON IONIZATION-BASED SKIN TREATMENT
    39.
    发明申请
    A SKIN TREATMENT DEVICE FOR MULTIPHOTON IONIZATION-BASED SKIN TREATMENT 审中-公开
    用于多基因离子化皮肤治疗的皮肤治疗装置

    公开(公告)号:US20160271419A1

    公开(公告)日:2016-09-22

    申请号:US15034881

    申请日:2014-10-29

    Abstract: The invention provides a non-invasive skin treatment device (200) for generating a multiphoton ionization process at a target position (110) in skin tissue (102). The skin treatment device (200) comprises a laser source (105) configured and constructed for generating a laser beam (106), an optical system (109, 112) for focusing the laser beam into the target position below a skin surface (103), and a plasma unit (117) configured and constructed for generating a plasma (100) such that, in use, at least a portion of the plasma penetrates the skin tissue for generating at least one free electron at the target position. The skin treatment device further comprises a control unit (123) configured and constructed for controlling the laser source and the plasma unit such that, in use, at least a portion of the light of the laser beam is absorbed by said at least one free electron generated at the target position, thereby generating the multiphoton ionization process. A result of the use of the plasma in generating the multiphoton ionization process is that an overall laser beam intensity, required to generate the multiphoton ionization process, is reduced as compared to skin treatment devices which generate the multiphoton ionization process using a laser beam only.

    Abstract translation: 本发明提供一种用于在皮肤组织(102)中的目标位置(110)处产生多光子电离过程的非侵入性皮肤治疗装置(200)。 皮肤治疗装置(200)包括被配置和构造用于产生激光束(106)的激光源(105),用于将激光束聚焦到皮肤表面(103)下方的目标位置的光学系统(109,112) 以及等离子体单元(117),其被配置和构造用于产生等离子体(100),使得在使用中,等离子体的至少一部分穿透皮肤组织以在目标位置产生至少一个自由电子。 皮肤治疗装置还包括配置和构造用于控制激光源和等离子体单元的控制单元(123),使得在使用中激光束的至少一部分光被所述至少一个自由电子 在目标位置产生,从而产生多光子电离过程。 在产生多光子电离过程中使用等离子体的结果是,与仅使用激光束产生多光子电离过程的皮肤处理装置相比,产生多光子电离过程所需的总体激光束强度降低。

    NON-INVASIVE DEVICE FOR TREATMENT OF THE SKIN USING LASER LIGHT
    40.
    发明申请
    NON-INVASIVE DEVICE FOR TREATMENT OF THE SKIN USING LASER LIGHT 审中-公开
    使用激光治疗皮肤的非侵入性装置

    公开(公告)号:US20160074116A1

    公开(公告)日:2016-03-17

    申请号:US14786208

    申请日:2014-04-24

    Abstract: The invention provides a non-invasive device (100) for treatment of skin tissue using laser light, and it provides a method and a computer program product. The non-invasive device comprises a light emission system (110) for generating a first laser pulse (130) and a subsequent second laser pulse (150) at a predefined time delay (ΔT) after the first laser pulse. The non-invasive device further comprises an optical system (160) for focusing, in use, the first laser pulse and the second laser pulse at a treatment location (210) inside the skin tissue (200). The first laser pulse comprises a first power density, a first pulse duration and a first pulse energy for initiating a plasma (205) at the treatment location. The subsequent second laser pulse comprises a second power density being lower than the first power density and a second pulse duration being at least 10 times longer than the first pulse duration, and a second pulse energy higher than the first pulse energy for sustaining or intensifying the plasma initiated by the first laser pulse, whereby in use the first laser pulse and the second laser pulse together induce Laser Induced Optical Breakdown at the treatment location.

    Abstract translation: 本发明提供一种用于使用激光治疗皮肤组织的非侵入性装置(100),并且其提供方法和计算机程序产品。 非侵入性装置包括用于在第一激光脉冲之后以预定时间延迟(&Dgr; T)产生第一激光脉冲(130)和随后的第二激光脉冲(150)的发光系统(110)。 非侵入性装置还包括用于在使用中将第一激光脉冲和第二激光脉冲聚焦在皮肤组织(200)内的处理位置(210)处的光学系统(160)。 第一激光脉冲包括用于在处理位置启动等离子体(205)的第一功率密度,第一脉冲持续时间和第一脉冲能量。 随后的第二激光脉冲包括低于第一功率密度的第二功率密度和比第一脉冲持续时间长至少10倍的第二脉冲持续时间,以及高于第一脉冲能量的第二脉冲能量,用于维持或加强 由第一激光脉冲启动的等离子体,由此在使用中,第一激光脉冲和第二激光脉冲一起在处理位置引起激光诱导的光学破坏。

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