Abstract: A light therapy system and method are provided for treating humans or terrestrial or aquatic animal and plant subjects with non-coherent light. The system includes an electrical controller configured with two supplies of voltage, high and low frequency pulse-width-modulators, adjustable high and low frequency duty cycle controllers for controlling the duty cycle outputs of the respective high and low frequency pulse-width-modulators that determine light pulsation intensities, and at least one light source electrically connected to the electrical controller and having at least two distinct light emitting elements. One light emitting element operates at high light pulsation frequencies, and another light emitting element operates at low light pulsation frequencies. The light may include a plurality of the high frequency powered light emitting elements and a plurality of the low frequency powered light emitting elements.

Abstract: A motor vehicle lamp assembly (10) having a lamp bulb (12) for emitting light and a bulb housing (14) having a light transmissive portion (16) for transmitting light from the lamp bulb to an illumination zone. The housing is coated with a coating material (60), which covers a selected region (32, 34, 36) of the light transmissive portion of the housing. The coating material is electrically energized to alter an amount of light transmitted from the bulb to the illumination zone. A drive circuit (30) electrically coupled to the coating material energizes the coating material to control a light output from the lamp assembly.