×

Optical detection device for analytical measurement of chemical substances

  • US 5,757,014 A
  • Filed: 04/01/1996
  • Issued: 05/26/1998
  • Est. Priority Date: 04/07/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. An optical detection device for analytical measurements of a substance, comprising a sample container for the substance, a fluorescence changer, a light source for emitting an excitation light, a photoelectric sensor for sensing an emission light coming from the fluorescence changer, an excitation light guide which substantially guides the excitation light emitted by the light source in such a manner that it meets at least part of the fluorescence changer, and an emission light guide which substantially guides the light emitted by the fluorescence changer in such a manner that it meets the photoelectric sensor, at least the excitation light guide comprising a material that has a refractive index gradient substantially perpendicular to the principal direction of propagation of the light in the light guide, wherein the excitation light guide is connected to the emission light guide in such a manner that the two light guides substantially form a structural unit having an end face facing the fluorescence changer, the end face physically corresponding substantially to a boundary surface of one of the two light guides, and the end face substantially forming both an optical emergence surface for the light passing from the light source through the excitation light guide and an optical entry surface for the emission light coming from the fluorescence changer.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×