Patent ID: 7802900

Claim:
An illumination system comprising: (a) a light pen comprising: (i) a housing; and (ii) a light source comprising: a. a light emitting diode source; b. wherein said light emitting diode source produces at least 50 kcd/m 2 more light at a range of wavelengths between 450 and 500 nanometers than at a range of wavelengths between 610 and 650 nanometers; and c. wherein said light emitting diode source produces light at an intensity of at least between 60 kcd/m 2 and 350 kcd/m 2 ; (b) a supplemental light pen comprising: (i) a supplemental housing; and (ii) a supplemental light source comprising; a. a supplemental light emitting diode source; b. wherein said supplemental light emitting giode source produces at least 50 kcd/m 2 more light at a range of wavelengths between 610 and 650 nanometers than at a range of wavelengths between 450 and 500 nanometers; c. wherein said supplemental light emitting diode source produces light at an intensity of at least between 60 kcd/m 2 and 350 kcd/m 2 ; (c) wherein said light pen is less than five kilograms in weight; and (d) wherein said light pen is less than ten centimeters wide.