Ultraviolet radiator units for therapeutic purposes; Infrared radiator units for therapeutic purposes; Phototherapeutic apparatus for medical purposes; Medical devices, namely, pulse oximeters; Phototherapeutic apparatus for medical purposes, namely, a LED (light-emitting diode) light source for medical and aesthetic skin treatments; Ultraviolet lamps for medical purposes; Light emitting diode (LED) apparatus for lighting, incorporated into medical instruments; Electronic aesthetic skin treatment devices using light emitting diodes, namely, infrared, red, orange, yellow, green, and blue wavelengths for generating light rays; Electronic light therapy apparatus for the skin; Light emitting diode (LED) devices for energy-efficient replacement of standard tungsten-filament lighting incorporated into hand-held medical instruments