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Spectrometer and optical input portion thereof

  • US 10,436,639 B2
  • Filed: 01/23/2015
  • Issued: 10/08/2019
  • Est. Priority Date: 01/23/2015
  • Status: Active Grant
First Claim
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1. A spectrometer, comprising an optical waveguide member defining an optical path, a dispersing element disposed in the optical path, and an optical input portion having a through hole and an assembly structure formed on a hole wall of the through hole, wherein a light passes through the through hole and then travels along the optical path in order to be incident to the dispersing element, a plurality of spectral components are generated by the dispersing element from the light incident to the dispersing element, the assembly structure is used to be detachably assembled with an optical element, when the optical element is assembled with the assembly structure, an optical axis of the optical element is linked to the optical path so that a light to be measured passing through the optical element is incident to the dispersing element along the optical axis and the optical path;

  • wherein the optical waveguide member comprises two reflecting plates, each of the reflecting plates comprises a reflecting surface, the reflecting surfaces of the reflecting plates are arranged face to face, and a gap is formed between the reflecting surfaces, the optical path is located in the gap;

    wherein the spectrometer further comprises a reflective element, the light passing through the through hole is reflected by the reflective element before the light further travels along the optical path to reach the dispersing element;

    wherein a slit member is disposed between the optical input portion and the optical waveguide member, the slit member comprises a slit, a light incidence surface and a light emergence surface opposite to the light incidence surface, the slit extends from the light incidence surface to the light emergence surface, the reflective element is disposed between the optical input portion and the slit member, the light passing through the through hole is reflected by the reflective element to be incident to the light incidence surface, and then to exit from the light emergence surface; and

    wherein an extension direction of the through hole is parallel to the light incidence surface of the slit member.

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