Dermoscopy epiluminescence device employing multiple color illumination sources

  • US 7,167,244 B2
  • Filed: 02/24/2006
  • Issued: 01/23/2007
  • Est. Priority Date: 03/07/2003
  • Status: Active Grant
First Claim
Patent Images

1. A dermoscopy epiluminescence device comprising:

  • a) a generally circular optical lens defining an outer circumference to produce a magnified image of an object to be observed by a viewer;

    b) an illumination source comprising a plurality of luminous diodes spaced about the circumference of said optical lens to direct light upon the object;

    c) at least one polarizer comprising a planar annular ring filter defining a generally circular center opening and an outer ring, said center opening of said annular ring is positioned in corresponding alignment with the circular optical lens to provide an open view of the object through the lens, said outer ring having at least one opening sized and positioned to correspond to at least one of the diodes of the illumination source of a first colored wavelength such that light emitted from said at least one diode of the illumination source is passed through said at least one opening toward the object and light emitted from remaining diodes of a second colored wavelength of the illumination source is polarized by the polarizer;

    d) a viewing polarizer positioned between a viewer and the object to polarize light reflected from the object wherein said viewing polarizer is cross-polarized relative to polarized light emitted from said remaining diodes; and

    e) at least one switch for initiating diodes of a first colored wavelength at a first position and for initiating diodes of a second wavelength at a second position.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×