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Optical method and apparatus for detecting and measuring aging, photoaging, dermal disease and pigmentation in skin

  • US 4,894,547 A
  • Filed: 09/28/1987
  • Issued: 01/16/1990
  • Est. Priority Date: 09/28/1987
  • Status: Expired due to Fees
First Claim
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1. Apparatus for inducing naturally occurring fluorescence, in vivo, in human skin and for measuring and quantifying such induced fluorescence for diagnostic purposes comprising:

  • means for producing laser light energy having a predetermined wavelength and power;

    means responsive to said laser light energy for directing the laser light energy to an untreated skin area to induce endogenous fluorescence;

    means for receiving endogenous fluorescent radiation from the skin area induced to fluorescence by said laser light energy;

    means for performing a spectral analysis of said received fluorescent radiation and for developing a numerical value representative of a predetermined portion of said spectrum, said numerical value having use as a diagnostic measure of the untreated skin area induced to endogenous fluorescence; and

    means responsive to said receiving means for directing said received endogenous fluorescent radiation to said spectral analysis means.

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