US Patent 12104772 Sanitation control for headlamps having variable beam illumination

A headlamp apparatus is described that is suitable for use by health care providers. The apparatus is directed to a headlamp that provides the ability for a user to block contaminants from entering into an internal portion or cavity of the headlamp while also providing the user the ability to sanitize the internal components of the headlamp without disassembly. The apparatus is further directed to a headlamp having an actuatable iris and associated lens whereby continuous enlarging of a diameter of an aperture of the iris continuously, linearly actuates the lens away from the iris and continuously reducing the diameter of the aperture of the iris continuously, linearly actuates the lens towards the iris.