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Detection device

  • US 10,551,310 B2
  • Filed: 06/14/2018
  • Issued: 02/04/2020
  • Est. Priority Date: 10/19/2017
  • Status: Active Grant
First Claim
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1. A detection device, comprising:

  • a light guide element having a top surface and a bottom surface opposite to the top surface;

    a sensing element disposed beside the bottom surface of the light guide element;

    a surface plasma resonance layer disposed on the top surface of the light guide element and adapted to receive a biopolymer; and

    a spatial filter element disposed between the bottom surface of the light guide element and the sensing element, wherein the spatial filter element has a plurality of first light channels and a plurality of second light channels, the plurality of first light channels extend in a first direction, the plurality of second light channels extend in a second direction, the first direction and the second direction are intersected, a normal direction of the top surface of the light guide element and the second direction form an included angle β

    , and the included angle β

    corresponds to a resonant angle γ

    of the surface plasma resonance layer.

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