Lamps for enhanced optical brightening and color preference

This invention describes a special light bulb that uses a combination of blue and UV-violet LEDs, covered by a unique coating, to produce white light. This light is designed to make white fabrics look brighter and cleaner by activating the optical brighteners often found in detergents, giving a preferred visual effect. The specific UV-violet light used is between 380 and 420 nanometers, and the coating is chosen so it doesn't absorb this special light.