Method for determing optical characteristics through a protective barrier

  • US 7,110,096 B2
  • Filed: 09/26/2005
  • Issued: 09/19/2006
  • Est. Priority Date: 01/02/1997
  • Status: Expired due to Fees
First Claim
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1. A method for determining optical characteristics of an object, comprising the steps of:

  • positioning a probe in proximity to the object, wherein the probe provides light to the object from one or more light sources, and receives light from the object through one or more light receivers, wherein the one or more light sources and one or more light receivers define at least one minimal height, wherein, when the probe is a distance from the object that is less than the minimal height, light that is reflected from a surface of the object is not propagated by the one more light receivers, wherein the light is provided to the object and received from the object through a protective barrier having a thickness, wherein the thickness is less than the minimal height;

    measuring the intensity of light received and propagated by one of the one or more light receivers;

    determining the optical characteristics of the object based in response to one or more intensity measurements.

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