Photobiomodulation Apparatus with Enhanced Performance and Safety Features
    12.
    发明申请
    Photobiomodulation Apparatus with Enhanced Performance and Safety Features 审中-公开
    具有增强性能和安全特性的光生物调节装置

    公开(公告)号:US20080091249A1

    公开(公告)日:2008-04-17

    申请号:US11869222

    申请日:2007-10-09

    Inventor: Sean Xiaolu Wang

    CPC classification number: A61N5/0613 A61B2017/00084 A61N2005/0651

    Abstract: A photobiomodulation apparatus providing precise light intensity, light dosage, and tissue temperature control so as to enhance the safety of the photobiomodulation treatment process and improve the comfort level of the patient.

    Abstract translation: 一种提供精确的光强度,光剂量和组织温度控制的光生物调节装置,以增强光生物调节处理过程的安全性并提高患者的舒适度。

    RAMAN SPECTROSCOPIC APPARATUS UTILIZING INTERNAL GRATING STABILIZED SEMICONDUCTOR LASER WITH HIGH SPECTRAL BRIGHTNESS
    13.
    发明申请
    RAMAN SPECTROSCOPIC APPARATUS UTILIZING INTERNAL GRATING STABILIZED SEMICONDUCTOR LASER WITH HIGH SPECTRAL BRIGHTNESS 有权
    内置光稳定半导体激光器的拉曼光谱仪器

    公开(公告)号:US20070146699A1

    公开(公告)日:2007-06-28

    申请号:US11608237

    申请日:2006-12-07

    CPC classification number: G01J3/44 G01J3/10 G01N21/64 G01N21/65 G01N2021/6417

    Abstract: A Raman spectroscopic apparatus utilizing a broad stripe semiconductor laser as the excitation light source is provided. The output spectrum of the semiconductor laser is narrowed and stabilized by an internal grating to provide high spectral brightness. A high throughput optical system is also disclosed for Raman scattering signal excitation and extraction, which takes full advantage of the high spectral brightness of the laser source.

    Abstract translation: 提供了利用宽条形半导体激光器作为激发光源的拉曼光谱仪。 半导体激光器的输出光谱由内部光栅变窄并稳定,以提供高光谱亮度。 还公开了用于拉曼散射信号激发和提取的高通量光学系统,其充分利用了激光源的高光谱亮度。

    Cold Plasma Therapy Device with Replaceable Dielectric Barrier

    公开(公告)号:US20210015535A1

    公开(公告)日:2021-01-21

    申请号:US16905991

    申请日:2020-06-19

    Abstract: This invention discloses a DBD plasma therapy device with replaceable dielectric barrier for treating different patients with different medical conditions. The plasma therapy device is equipped with a variety of dielectric barriers. The dielectric barriers may have different electrical characteristics (which are determined by their materials as well as physical dimensions and shapes) to adapt for the treatment of different types of biological tissues. The dielectric barrier of the plasma therapy device can be replaced to avoid contamination and cross-infection. As an additional feature, the plasma device further comprises an optical sensor, such as a spectroscopic sensor, for monitoring the emission spectrum of the plasma discharge. The emission spectrum can be utilized to analyze the composition of the reactive species generated by the plasma discharge and provide feedback control to the plasma therapy device.

    Method to Store a Secret QR Code into a Colored Secure QR Code

    公开(公告)号:US20190087699A1

    公开(公告)日:2019-03-21

    申请号:US16178745

    申请日:2018-11-02

    CPC classification number: G06K19/06056

    Abstract: The present invention embodies a technique, referred to as Secure QR Codes, which not only provides aesthetically enhanced QR codes but also allows for security. It can embed a standard black and white QR code, referred to as a public QR code, and a secret QR code, both into a secure QR code. The secure QR code produced is composed of colored cells. The public black and white QR code must first be, either aesthetically enhanced into an enhanced colored QR code, or transformed into a colored QR code with cells of uniform color obtained by transforming each of the black and white cells of the public QR code into cells that takes a color from a subset of possible colors, such that the luminance of each colored cell approximates accurately the black or white luminance values of the public QR code.

    System and method of embedding a two dimensional code with concealed secure message

    公开(公告)号:US10089508B2

    公开(公告)日:2018-10-02

    申请号:US15168677

    申请日:2016-05-31

    Abstract: The present invention embodies a technique to embed a graphic representation and/or a concealed message such as but not limited to two dimensional codes such as quick response (QR) code matrices, fingerprints, coded fingerprint representations, iris imagery, iris coded representation, biometric hashes, palm print or portraits into a QR matrix code. In the case where biometric data such as finger print representation, iris coded representation or biometric hashes are encoded into the embedding, suitable binary representation of those patterns are generated before encoding. These concealed messages can be further encrypted using any cryptographic method such as public or private key or other suitable encrypting mechanisms adapted to the concealed message. For an implementation of the present invention in which a graphic representation is embedded into the code, the embedding process is based on an optimization method by which the color or luminance of the embedding is modified so as to minimize the visual distortion with respect to a reference image while maintaining the probability of decoding error of the standard and concealed code under a predetermined limit.

    Laser Induced Breakdown Spectroscopy (LIBS) Apparatus with Automatic Wavelength Calibration

    公开(公告)号:US20170219494A1

    公开(公告)日:2017-08-03

    申请号:US15412357

    申请日:2017-01-23

    CPC classification number: G01N21/718 G01N21/274

    Abstract: This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus with automatic wavelength calibration. The LIBS apparatus comprises a database of pre-obtained LIBS spectra of standard calibration samples. When the LIBS spectrum of a target sample is acquired, a processor unit calculates a cross correlation between the LIBS spectrum of the calibration sample and the spectrum of the target sample in reference to a possible wavelength shift between the two spectra. The exact wavelength shift between the two spectra is found where the cross correlation reaches a maximum value. The wavelength shift of the target spectrum is then corrected through an interpolation procedure and the wavelength shift corrected spectrum is analyzed to obtain the composition information of the target sample.

    Laser Induced Breakdown Spectroscopy (LIBS) Apparatus Based on High Repetition Rate Pulsed Laser
    18.
    发明申请
    Laser Induced Breakdown Spectroscopy (LIBS) Apparatus Based on High Repetition Rate Pulsed Laser 有权
    基于高重复脉冲激光的激光诱导击穿光谱(LIBS)装置

    公开(公告)号:US20170067782A1

    公开(公告)日:2017-03-09

    申请号:US15166374

    申请日:2016-05-27

    CPC classification number: G01J3/443 G01J3/0208 G01J3/06 G01J3/10 G01J3/28

    Abstract: This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus based on a high repetition rate pulsed laser. The laser produces a train of laser pulses at a high repetition rate in the kHz or even higher range. When the laser beam hits the sample, it generates several thousands of micro-plasma emissions per second. Synchronized miniature CCD array optical spectrometer modules collect the LIBS signal from these micro-plasma emissions. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR) and lower the limit of detection (LOD). In addition, the influence of pulse to pulse variation of the laser is minimized since the obtained LIBS spectrum is the spectrum of a plurality of micro-plasma emissions produced by a plurality of laser pulses. The high repetition rate laser also makes it possible to measure the LIBS signal at a short and a long integration time and mathematically combining the two spectra to obtain a LIBS spectrum with enhanced dynamic range.

    Abstract translation: 本发明公开了一种基于高重复脉冲激光的激光诱导击穿光谱(LIBS)装置。 激光器在kHz或甚至更高的范围内以高重复率产生一串激光脉冲。 当激光束撞击样品时,它每秒产生数千个微等离子体排放。 同步微型CCD阵列光谱仪模块从这些微等离子体发射中收集LIBS信号。 通过调整光谱仪的积分时间来覆盖激光脉冲串的多个周期,光谱仪将由多个激光脉冲产生的LIBS信号进行积分。 因此,可以大大提高所获得的LIBS频谱的强度,以增加信噪比(SNR)并降低检测极限(LOD)。 此外,由于获得的LIBS光谱是由多个激光脉冲产生的多个微等离子体发射的光谱,所以激光器的脉冲对脉冲变化的影响被最小化。 高重复率激光器还使得可以在短和长的积分时间测量LIBS信号并且数学地组合两个光谱以获得具有增强的动态范围的LIBS光谱。

    Substrate Enhanced Laser-Induced Breakdown Spectroscopy (LIBS) Apparatus
    19.
    发明申请
    Substrate Enhanced Laser-Induced Breakdown Spectroscopy (LIBS) Apparatus 有权
    基板增强激光诱导击穿光谱(LIBS)装置

    公开(公告)号:US20160116416A1

    公开(公告)日:2016-04-28

    申请号:US14918839

    申请日:2015-10-21

    CPC classification number: G01N21/718 G01J3/443 G01N33/2888 G01N2201/06113

    Abstract: This invention discloses a substrate enhanced laser-induced breakdown spectroscopy (LIBS) apparatus for liquid analysis. The LIBS apparatus comprises a pulsed laser for producing a laser beam, a substrate made of a material having a high absorption coefficient at the laser wavelength for receiving the liquid sample, an optical lens or mirror for focusing the laser beam onto the liquid sample to produce a plasma emission, and a spectrometer for measuring the optical spectrum of the plasma emission. When the thickness of the liquid sample reaches an optimum value, the plasma emission from the liquid sample is enhanced by the substrate to produce a strong LIBS signal for spectral analysis.

    Abstract translation: 本发明公开了一种用于液体分析的基板增强激光诱导击穿光谱(LIBS)装置。 LIBS装置包括用于产生激光束的脉冲激光器,由用于接收液体样品的激光波长处具有高吸收系数的材料制成的衬底,用于将激光束聚焦到液体样品上的光学透镜或反射镜,以产生 等离子体发射,以及用于测量等离子体发射的光谱的光谱仪。 当液体样品的厚度达到最佳值时,来自液体样品的等离子体发射被衬底增强以产生用于光谱分析的强LIBS信号。

    Laser Induced Breakdown Spectroscopy (LIBS) Apparatus Based on High Repetition Rate Pulsed Laser
    20.
    发明申请
    Laser Induced Breakdown Spectroscopy (LIBS) Apparatus Based on High Repetition Rate Pulsed Laser 有权
    基于高重复脉冲激光的激光诱导击穿光谱(LIBS)装置

    公开(公告)号:US20160069745A1

    公开(公告)日:2016-03-10

    申请号:US14845980

    申请日:2015-09-04

    CPC classification number: G01J3/443 G01J3/0208 G01J3/06 G01J3/10 G01J3/28

    Abstract: This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus based on a high repetition rate pulsed laser. The laser produces a train of laser pulses at a high repetition rate in the kHz or even higher range. When the laser beam hits the sample, it generates several thousands of micro-plasmas per second. Synchronized miniature CCD array optical spectrometer modules collect the LIBS signal from these micro-plasmas. By adjusting the integration time of the spectrometer to cover a plurality of periods of the laser pulse train, the spectrometer integrates the LIBS signal produced by this plurality of laser pulses. Hence the intensity of the obtained LIBS spectrum can be greatly improved to increase the signal-to-noise ratio (SNR) and lower the limit of detection (LOD). In addition, the influence of pulse to pulse variation of the laser is minimized since the obtained LIBS spectrum is the spectrum of a plurality of micro-plasmas produced by a plurality of laser pulses. The high repetition rate laser also makes it possible for fast scanning the laser beam over the sample surface such that an average spectrum of the sample is collected to overcome the sample non-uniformity issue or for performing spectral imaging of the sample by correlating the obtained LIBS spectrum with the position of the scanning laser beam.

    Abstract translation: 本发明公开了一种基于高重复脉冲激光的激光诱导击穿光谱(LIBS)装置。 激光器在kHz或甚至更高的范围内以高重复率产生一串激光脉冲。 当激光束撞击样品时,它每秒产生数千个微等离子体。 同步微型CCD阵列光谱仪模块从这些微等离子体收集LIBS信号。 通过调整光谱仪的积分时间来覆盖激光脉冲串的多个周期,光谱仪将由多个激光脉冲产生的LIBS信号进行积分。 因此,可以大大提高所获得的LIBS频谱的强度,以增加信噪比(SNR)并降低检测极限(LOD)。 此外,由于获得的LIBS光谱是由多个激光脉冲产生的多个微等离子体的光谱,所以激光器的脉冲对脉冲变化的影响被最小化。 高重复率激光器还使得可以在样品表面上快速扫描激光束,使得采集样品的平均光谱以克服样品不均匀性问题或通过将获得的LIBS相关来进行样品的光谱成像 光谱与扫描激光束的位置。

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