Method for determination of analytes using NIR, adjacent visible spectrum and discrete NIR wavelenths
    1.
    发明授权
    Method for determination of analytes using NIR, adjacent visible spectrum and discrete NIR wavelenths 失效
    使用NIR,相邻可见光谱和离散NIR波长测定分析物的方法

    公开(公告)号:US06741876B1

    公开(公告)日:2004-05-25

    申请号:US10070187

    申请日:2002-06-28

    IPC分类号: A61B500

    摘要: Described is a method for measuring the concentration of a blood constituent within a body part (80) of a living subject which comprises irradiating a body part of the subject with a continuum of a broad spectrum of radiation in adjacent and near infrared range of the electomagnetic spectrum; collecting the band of radiation after the radiation has been directed onto the part; dispersing the continuum of collected radiation into a dispersed spectrum of component wavelengths onto a detector (120) the detector taking measurements of at least one of transmitted or reflected radiation from the collected radiation; and transferring the measurements to a processor (300), and then measuring the same kind of absorbance or reflectance with respect to one or more a discrete wavelengths of radiation from the longer near infrared range and using the measurements to calculate the concentration of the constituent.

    摘要翻译: 描述了一种用于测量活体的身体部分(80)中的血液成分浓度的方法,其包括在电磁场的相邻和近红外范围内以广谱辐射的连续统一照射受试者的身体部位 光谱; 在辐射被引导到部件上之后收集辐射带; 将收集的辐射的连续谱分散到分量波长的分量波长到检测器(120)上,所述检测器从所收集的辐射中测量发射或反射的辐射中的至少一种; 并将测量值传送到处理器(300),然后测量相对于来自较长近红外范围的一个或多个离散波长的吸收或反射率,并使用测量来计算组分的浓度。

    Compact device for measuring, tissue analytes
    3.
    发明授权
    Compact device for measuring, tissue analytes 失效
    用于测量的紧凑型装置,组织分析物

    公开(公告)号:US06928311B1

    公开(公告)日:2005-08-09

    申请号:US10070191

    申请日:2000-08-31

    IPC分类号: A61B5/00

    摘要: A compact device (20) for non-invasively monitoring concentration levels of blood constituents, including glucose, cholesterol, alcohol, blood gases and various ions. The device includes a finger receptor (140) having a channel for receiving a finger of a user. The channel has a light entrance and a light exit so that light can be passed from a light source (91) through a finger located in the channel in a direction generally normal to the finger. Certain heat generating components, including a stable power supply for the device, are external to the device housing so as to reduce heat generation and thereby increase stability of the device. The device includes a communications interface for interacting with a computer. The device can be used for clinical use or for home use and the memory of the computer can be used to assist with record keeping and with dosage calculations.

    摘要翻译: 用于非侵入性地监测血液成分(包括葡萄糖,胆固醇,酒精,血液气体和各种离子)的浓度水平的紧凑装置(20)。 该装置包括具有用于接收用户手指的通道的手指接收器(140)。 通道具有光入射和光出射,使得光可以从光源(91)通过位于通道中的手指沿着大致垂直于手指的方向通过。 包括用于装置的稳定电源的某些发热组件在装置外壳的外部,以便减少发热,从而增加装置的稳定性。 该设备包括用于与计算机交互的通信接口。 该设备可用于临床使用或家庭使用,并且计算机的存储器可用于协助记录保存和剂量计算。

    Chromatically corrected directional diffusing screen
    4.
    发明授权
    Chromatically corrected directional diffusing screen 失效
    色彩校正的定向扩散屏幕

    公开(公告)号:US5046793A

    公开(公告)日:1991-09-10

    申请号:US357119

    申请日:1989-05-26

    IPC分类号: G02B5/32

    CPC分类号: G02B5/32 G03H2001/2236

    摘要: A holographic diffuser provides a high degree of chromatic correction, or color balance, within a selected eyebox and the ability to generate more than one specific eyebox for multiple observer applications. The strength of these gratings can be varied to modify the diffraction efficiency for each color so that the balance of colors can be varied within the eyebox. This balancing of colors can be used, for example, to compensate for color imbalance within the light source or image generator. Illuminating a first holographic medium produces a first real image of a diffusing screen in a define eyebox. A second hologram is recorded in the holographic medium using the real image produced by the first hologram as an object such that when the holographic medium is illuminated, it produces a second real image of a diffusing screen in the define eyebox. A third hologram is recorded in the holographic medium using the second real image as an object. The third hologram is formed by multiple exposures of the holographic medium with a plurality of selected spectral components. The plurality of selected spectral components comprises optical wavelengths that may correspond to the colors red, green and blue, respectively. The third hologram may be formed by exposing the holographic medium with a single optical wavelength with first, second and third angles of incidence being selected for each exposure of the holographic medium to the optical wavelength.

    摘要翻译: 全息漫射器在所选择的眼窝内提供高度的色彩校正或色彩平衡,以及为多个观察者应用产生多于一个特定眼窝的能力。 可以改变这些光栅的强度以改变每种颜色的衍射效率,使得颜色的平衡可以在眼箱内变化。 可以使用这种颜色的平衡来例如补偿光源或图像发生器内的颜色不平衡。 照亮第一全息介质在定义的眼箱中产生漫射屏的第一实际图像。 使用由第一全息图产生的真实图像作为对象将第二全息图记录在全息介质中,使得当全息介质被照亮时,其在限定的眼框中产生扩散屏幕的第二实际图像。 使用第二实像作为对象,将第三全息图记录在全息介质中。 第三全息图由具有多个选定的光谱分量的全息介质的多次曝光形成。 多个所选择的光谱分量包括分别对应于红色,绿色和蓝色的光的波长。 第三全息图可以通过用单个光学波长曝光全息介质来形成,其中选择第一,第二和第三入射角,以使全息介质对于每个光学波长的曝光。