Laser doppler anemometry with diffractive optical elements
    1.
    发明授权
    Laser doppler anemometry with diffractive optical elements 失效
    激光多普勒血流计与衍射光学元件

    公开(公告)号:US06859267B2

    公开(公告)日:2005-02-22

    申请号:US10611987

    申请日:2003-07-03

    CPC classification number: G01P5/26 G01P15/18 G01S17/58

    Abstract: The present invention relates to an apparatus for use in the determination of a condition or state of an object based on quasi-elastic interaction between the object and light transmitted to the object, the apparatus comprising a beam splitter arrangement for splitting an incoming light beam of wavelength, λ, into a diffracted light beam and an undiffracted light beam, the beam splitter arrangement comprising a first and a second diffractive member, the first diffractive member transforming the light beam emitted by the light source into the diffracted and the undiffracted light beams, the second diffractive member receiving the diffracted light beam and diffracting the received light beam in a direction substantially parallel to the undiffracted light beam from the first diffractive member, wherein the diffracted light beam, after being diffracted by the second diffractive member, and the undiffracted light beam from the first diffractive member are separated by a distance, d, said distance, d, being dependent on wavelength, λ.

    Abstract translation: 本发明涉及一种用于基于物体和被传送到物体的光之间的准弹性相互作用来确定物体的状态或状态的装置,该装置包括分束器装置,用于将入射光束 所述分束器装置包括第一和第二衍射构件,所述第一衍射构件将由所述光源发射的光束变换为所述衍射光束和所述未衍射光束, 所述第二衍射构件接收所述衍射光束并且在与所述第一衍射构件的所述未衍射光束基本平行的方向上衍射所述接收的光束,其中所述衍射光束在被所述第二衍射构件衍射之后和所述未衍射光 来自第一衍射构件的光束被分开距离d,sa id距离,d,取决于波长λ。

    DIFFUSELY RADIATING LED LIGHT SYSTEM
    2.
    发明申请
    DIFFUSELY RADIATING LED LIGHT SYSTEM 审中-公开
    DIFFUSELY RADIATING LED灯系统

    公开(公告)号:US20120286306A1

    公开(公告)日:2012-11-15

    申请号:US13509184

    申请日:2010-11-11

    Abstract: A lighting device (7) for illuminating objects, the lighting device comprising: a plurality of light emitting diodes (1) wherein at least one of the plurality of light emitting diodes is adapted to generate light having a spectrum different from a spectrum of light generated by another light emitting diode of said plurality of light emitting diodes; and a chamber (8) comprising a first reflective surface (3a) and an opening (5) for allowing light to exit said chamber, said opening having a periphery, wherein the plurality of light emitting diodes (1) are positioned along the periphery of said opening. The opening (5) has a centre point defined as the centroid of said opening, and that said plurality of light emitting diodes are positioned along a limited portion of the periphery of said opening, wherein an angular distance between any two light emitting diodes of said lighting device relative the centre point of the opening is smaller than 135 degrees and said first reflective surface (3a) is a diffuse reflective surface.

    Abstract translation: 1.一种用于照明物体的照明装置(7),所述照明装置包括:多个发光二极管(1),其中所述多个发光二极管中的至少一个适于产生具有不同于所产生光的光谱的光 通过所述多个发光二极管的另一个发光二极管; 以及包括第一反射表面(3a)和用于允许光离开所述室的开口(5)的室(8),所述开口具有周边,其中所述多个发光二极管(1)沿着 说开口 开口(5)具有被定义为所述开口的重心的中心点,并且所述多个发光二极管沿着所述开口的周边的有限部分定位,其中所述两个发光二极管之间的角距离 相对于开口的中心点的照明装置小于135度,并且所述第一反射表面(3a)是漫反射表面。

    Temperature compensated optical system based on a diffractive optical element
    3.
    发明授权
    Temperature compensated optical system based on a diffractive optical element 失效
    基于衍射光学元件的温度补偿光学系统

    公开(公告)号:US06850325B2

    公开(公告)日:2005-02-01

    申请号:US10611988

    申请日:2003-07-03

    Abstract: The present invention relates to an apparatus for the determination of a condition or state of an object based on quasi-elastic interaction between the object and light transmitted to the object, the apparatus comprising a diffractive optical element having a diffracting region comprising a first diffracting structure for diffraction and focussing of a first light beam to the object, and a second diffracting structure that is laterally displaced relative to the first diffracting structure for diffraction and focussing of a second light beam to the object. The first and second diffracting structures focus the first and second light beams in the same focussing plane, the focussing plane being substantially perpendicular to propagation directions of the first and second light beams. The diffracting region further comprises a receiving diffracting structure for diffraction of light from the light beams that has interacted with the object. The diffracted light is diffracted in a diffraction angle. The size of the diffraction angle is substantially equal to the angle of incidence of the incoming light beam.

    Abstract translation: 本发明涉及一种用于基于物体和被传输到物体的光之间的准弹性相互作用来确定物体的状态或状态的装置,该装置包括具有衍射区域的衍射光学元件,衍射区域包括第一衍射结构 用于将第一光束衍射和聚焦到物体,以及第二衍射结构,其相对于第一衍射结构横向移位,用于将第二光束衍射和聚焦到物体。 第一和第二衍射结构将第一和第二光束聚焦在同一聚焦平面中,聚焦平面基本上垂直于第一和第二光束的传播方向。 衍射区域还包括用于衍射来自与物体相互作用的光束的光的接收衍射结构。 衍射光以衍射角衍射。 衍射角的大小基本上等于入射光束的入射角。

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