Patent ID: 7827726

Claim:
An illumination apparatus comprising: a plurality of illumination sources, wherein enabled illumination sources of the plurality of illumination sources illuminate at different wavelengths; a housing, wherein the housing further includes a forward portion carrying the plurality of illumination sources; a controller, carried within the housing and coupled to the plurality of illumination sources, operable to selectively enable one or more illumination sources of the plurality of illumination sources, and wherein the controller is operable in a plurality of modes, each mode of the plurality of modes enabling for activation a selected one or more illumination sources comprising a subset of the plurality of illumination sources; an activation device, carried by the housing and coupled to the plurality of illumination sources, operable by a user to activate illumination from one or more illumination sources of the plurality of illumination sources enabled for activation in a current mode of the controller from among the plurality of modes; means for modulating enabled illumination sources of the plurality of illumination sources at a plurality of frequencies in a selected mode of the controller from among the plurality of modes, wherein the plurality of frequencies are swept over a range of frequencies during illumination of the multiple enabled illumination sources; and wherein the plurality of frequencies are between 7 Hz and 20 Hz, and wherein each of the plurality of frequencies is swept between 7 Hz and 20 Hz by one or more frequencies between 2 Hz and 6 Hz.