Fabry-perot fourier transform spectrometer

    公开(公告)号:US09664563B2

    公开(公告)日:2017-05-30

    申请号:US12958312

    申请日:2010-12-01

    Applicant: Paul Lucey

    Inventor: Paul Lucey

    CPC classification number: G01J3/26 G01J3/14 G01J3/4531

    Abstract: A spatial Fourier transform spectrometer is disclosed. The Fourier transform spectrometer includes a Fabry-Perot interferometer with first and second optical surfaces. The gap between the first and second optical surfaces spatially varies in a direction that is orthogonal to the optical axis of the Fourier transform spectrometer. The Fabry-Perot interferometer creates an interference pattern from input light. An image of the interference pattern is captured by a detector, which is communicatively coupled to a processor. The processor is configured to process the interference pattern image to determine information about the spectral content of the input light.

    Spectral imaging sensors and methods
    34.
    发明授权
    Spectral imaging sensors and methods 有权
    光谱成像传感器和方法

    公开(公告)号:US09343491B2

    公开(公告)日:2016-05-17

    申请号:US14270929

    申请日:2014-05-06

    Abstract: Spectral imaging sensors and methods are disclosed. A spectral imaging sensor includes a color-coded array of apertures positioned to receive light from an object to be imaged. The array includes a first plurality of apertures configured to pass light in a first predetermined wavelength range and a second plurality of apertures configured to pass light in a second predetermined wavelength range different from the first predetermined wavelength range. The imaging sensor further includes one or more optical elements positioned to receive light passing through the color-coded array, and a photodetector positioned to receive light from the one of more optical elements. A spectral imaging method includes the steps of filtering light from an object to be imaged through a color-coded array of apertures, redirecting the filtered light with one or more optical elements, and receiving the redirected light with a photodetector.

    Abstract translation: 公开了光谱成像传感器和方法。 光谱成像传感器包括定位成接收来自待成像对象的光的孔的颜色编码阵列。 该阵列包括被配置为使第一预定波长范围内的光通过的第一多个孔,以及被配置成使第二预定波长范围内的第一预定波长范围内的光通过的第二多个孔。 成像传感器还包括被定位成接收通过彩色编码阵列的光的一个或多个光学元件,以及定位成接收来自多个光学元件中的一个的光的光电检测器。 光谱成像方法包括以下步骤:通过彩色编码的孔阵列对来自待成像对象的光进行过滤,使用一个或多个光学元件重定向经过滤光,以及用光电检测器接收重定向的光。

    One-dimensional global rainbow measurement device and measurement method
    36.
    发明授权
    One-dimensional global rainbow measurement device and measurement method 有权
    一维全球彩虹测量装置及测量方法

    公开(公告)号:US09217669B2

    公开(公告)日:2015-12-22

    申请号:US14356723

    申请日:2013-05-10

    Abstract: The present invention provides a one-dimensional global rainbow measurement device and a measurement method. The measurement device comprises three parts, i.e., a laser emission unit, a signal collection unit and a signal processing unit. The laser emission unit is modulated to be a light sheet by a laser beam emitted by a laser, and configured to irradiate droplets in a spray field to generate rainbow signals. The signal collection unit is configured to separately image, by an optical system unit, the rainbow signals at measurement points of different height onto different row pixels of a CCD signal collector. The signal processing unit is configured to convert the received rainbow signals and process by a computer the rainbow signals in a form of data to obtain the measured values. The present invention can analyze gas-liquid phase flow fields during the injection, realize the online measurement of fuel atomization, spray and other processes, and can measure the refractive index, size, temperature and other parameters of the spray droplets in a real-time and non-contact manner.

    Abstract translation: 本发明提供一维全球彩虹测量装置和测量方法。 测量装置包括三部分,即激光发射单元,信号收集单元和信号处理单元。 通过激光发射的激光束将激光发射单元调制成光片,并配置为在喷射场中照射液滴以产生彩虹信号。 信号收集单元被配置为通过光学系统单元将不同高度的测量点处的彩虹信号分开地映射到CCD信号收集器的不同行像素上。 信号处理单元被配置为转换所接收的彩虹信号,并且由计算机以数据的形式处理彩虹信号以获得测量值。 本发明可以在注射期间分析气液相流场,实现燃料雾化,喷雾等工艺的在线测量,并可实时测量喷雾液滴的折射率,尺寸,温度等参数 和非接触的方式。

    Device for splitting light into components having different wavelength ranges and methods of use
    37.
    发明授权
    Device for splitting light into components having different wavelength ranges and methods of use 有权
    用于将光分解成具有不同波长范围和使用方法的部件的装置

    公开(公告)号:US09158118B2

    公开(公告)日:2015-10-13

    申请号:US13656457

    申请日:2012-10-19

    Abstract: A prism including a substrate faceted to provide a plurality of flat surfaces, wherein at least two of the plurality of surfaces, each including a filter coating, form at least two filter surfaces, wherein each filter surface selectively permits passage of a predetermined wavelength and reflects remaining wavelengths along an optical path towards another of the plurality of surfaces, optionally another filter surface, wherein an angle of incidence of each of the plurality of surfaces along the optical path is equal or nearly equal. An apparatus incorporating the prism and its use for splitting a light spectrum into a plurality of wavelengths or wavelength ranges.

    Abstract translation: 一种棱镜,包括面以提供多个平坦表面的基板,其中,所述多个表面中的至少两个表面,每个包括过滤器涂层,形成至少两个过滤器表面,其中每个过滤器表面选择性地允许预定波长的通过并反射 沿着光路的剩余波长朝向多个表面中的另一个,可选地另外的滤光器表面,其中沿着光路的多个表面中的每一个的入射角相等或接近相等。 一种结合棱镜的装置及其用于将光谱分解成多个波长或波长范围的用途。

    Tuned dynamic eigen spectroscopy systems
    38.
    发明授权
    Tuned dynamic eigen spectroscopy systems 有权
    调谐动态特征光谱系统

    公开(公告)号:US08928880B2

    公开(公告)日:2015-01-06

    申请号:US13560220

    申请日:2012-07-27

    Abstract: An apparatus for detecting gas concentrations includes a coded filter to oscillate proximate a resonant frequency. A photo detector is positioned below the coded filter such that the coded filter selectively blocks light that is directed at the photo detector. Optics are positioned to project spectral information on to the coded filter. A processor analyzes a signal received from the photo detector. The processor is adapted to weight a harmonic attic signal.

    Abstract translation: 用于检测气体浓度的装置包括在谐振频率附近振荡的编码滤波器。 光检测器位于编码滤波器的下方,使得编码滤波器选择性地阻挡指向光检测器的光。 定位光学器件将光谱信息投影到编码滤波器上。 处理器分析从光电检测器接收的信号。 处理器适用于加重谐波阁楼信号。

    Particle sensor with wide linear range

    公开(公告)号:US08603772B2

    公开(公告)日:2013-12-10

    申请号:US12220897

    申请日:2008-07-28

    CPC classification number: G01N21/51 G01N15/06 G01N2021/4709

    Abstract: This invention provides a novel methods and devices for measurement of particle concentration or changes in particle concentration over a wide linear range. The invention comprises one or more radiation sources and one or more detectors contained in a housing which is interfaced to a medium containing particulate matter. The one or more radiation sources are directed into the medium, scattered or transmitted by the particulate matter, and then some portion of the radiation is detected by the one or more detectors. Methods for confining the measurement to a specific volume within the medium are described. Algorithms are provided for combining the signals generated by multiple source-detector pairs in a manner that results in a wide linear range of response to changes in particle concentration. In one embodiment the sensor provides non-invasive measurements of biomass in a bioreactor. In another embodiment an immersible probe design is described, which may be suited for one-time use. In an addition embodiment, a sensor is provided which is well suited to the rapid sequential measurement of particle concentration in multiple vessels, such as assessment of biomass in series of shake flasks.

    Method and device for adjusting wavelength distribution pattern in laser
    40.
    发明申请
    Method and device for adjusting wavelength distribution pattern in laser 有权
    调整激光波长分布图的方法和装置

    公开(公告)号:US20050205536A1

    公开(公告)日:2005-09-22

    申请号:US11083738

    申请日:2005-03-18

    Abstract: A plurality of configurations is simultaneously formed in a material by a single laser beam having a desired distribution pattern of wavelengths. An input laser beam has an initial wavelength distribution pattern. The initial wavelength distribution pattern is adjusted or modified into a desired final wavelength distribution pattern. For example, the initial wavelength distribution pattern is a wide range of wavelengths in a single bell-curve distribution while the desired final wavelength distribution pattern has a specific number of sharp peaks each over a predetermined narrow range. The laser beam having the desired final wavelength distribution pattern is focused upon on a material. Because of the multiple peaks in the wavelength distribution, the laser beam is focused at a plurality of the focal distances. A number of structures is simultaneously formed in a material at the multiple focal points or at multiple locations/depths when the above laser beam is projected onto the material.

    Abstract translation: 通过具有期望的波长分布图案的单个激光束在材料中同时形成多个构造。 输入激光束具有初始波长分布图案。 将初始波长分布图案调整或修改为所需的最终波长分布图案。 例如,初始波长分布图案是单个钟形曲线分布中的宽波长范围,而期望的最终波长分布图案在预定的窄范围内具有特定数量的尖峰。 具有期望的最终波长分布图案的激光束聚焦在材料上。 由于波长分布中的多个峰值,激光束被聚焦在多个焦距处。 当将上述激光束投射到材料上时,在多个焦点处的材料中或多个位置/深度处同时形成多个结构。

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