Brightness Enhancement
Brightness Enhancement is achieved by designing the micro-structures to control the direction of light. As illustrated above, more vertical light ” I” is direct through the lenses to project through within a 70 degree range. Less vertical light “II” is redirected through the sides of the lenses to project through within the 70 degrees. More horizontal light will be partially reflected back to the source. The shape of the lens can be varied to achieve specific light transmission goals.
Micro Lens Arrays
Micro Lens Structure Plates and Films are made up of a complete array of micro-lenses with a variety of shapes depending on the use. The Lenses are of the size of 10 to 50 um which are imprinted on to the surface of flexible Polycarbonate or other materials in a roll-to-roll process. These very small lenses are not visible to the naked eye. These very small lenses and other structures allow diffraction to be effectively used for control of lighting direction. Unique is the ability to create these micro-structures in a low cost production process in such large surface areas.