Patent ID: 7621653

Claim:
A multi-function illumination device comprising: a light emitting diode (LED) module including: a control circuit having a first control output and a second control output; a first LED bank coupled to the first control output, the first LED bank comprising at least one LED for emitting light of a first wavelength, wherein said light of said first wavelength is selected from the group consisting of blue light, green light, and combinations thereof; a second LED bank coupled to the second control output, the second LED bank comprising at least one LED for emitting red light of a second wavelength; the control circuit causing, in a first mode of operation, the first LED bank to illuminate continuously and the second LED bank to flash on and off at a predetermined frequency such that the red flashing light emitted from the second LED bank causes a red substance to stand out against the continuously illuminated light of said first wavelength emitted from the first LED bank making the red substance more visible to a user for functioning as a blood tracker illumination device.