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Optical member for measuring concentration, concentration measurement unit including the optical member, and fuel cell

  • US 20070059589A1
  • Filed: 04/21/2004
  • Published: 03/15/2007
  • Est. Priority Date: 04/28/2003
  • Status: Abandoned Application
First Claim
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1. An optical member for measuring a concentration comprising:

  • a path through which a substance to be measured passes;

    a first optical element including an incident surface on which light for inspection is incident and an emitting surface facing said path;

    a second optical element including an incident surface facing said path and an emitting surface from which the light is emitted; and

    magnifying means that magnifies a distance between an emitting optical axis of light transmitting through said first optical element, being refracted by the substance to be measured in said path and transmitting through said second optical element, and an incident optical axis of the light for inspection.

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