Patent ID: 7690806

Claim:
An illuminating headlamp comprising: one of a headband and a clip-on assembly; and at least one optical device providing illumination at a known distance from said optical device attached to said headband, said at least one optical device comprising: a housing having an open first end and an open second end; a light emitting device attached to a mounting attached to said second end, said mounting attaching causing said light emitting device to be orientated at a known angle to an axis of said housing; at least one optically transparent lens incorporated into said first end, and means for adjusting said at least one optically transparent lens to cause a focal point of said at least one lens to be positioned behind said light emitting device, said adjusting causes a defocusing of light generated by said light emitting device, wherein a zone of substantially uniform illumination of said defocused light is projected at said known distance.