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Apparatus and method for calibrating measurement systems

  • US 5,860,421 A
  • Filed: 01/17/1996
  • Issued: 01/19/1999
  • Est. Priority Date: 01/17/1996
  • Status: Expired due to Term
First Claim
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1. A calibration device for use with a measurement system which transmits radiation to a material or tissue in order to effect measurements, comprising:

  • a structure through which the radiation can be transmitted; and

    a removable calibration target arranged on said structure, said removable calibration target capable of returning a portion of the radiation, the portion of the radiation returned for calibrating the measurement system, wherein said removable calibration target is to be removed from said structure to allow a measurement to be made on the material or tissue, and wherein said structure is interposed between the measurement system and the material or tissue when a measurement is made on the material or tissue.

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