SECONDARY OPTICAL LENS FOR LAMP

摘要

A secondary optical lens for a lamp is provided, in which the length of one of two axes passing the center of the bottom surface of the lens has minimal value and the projection surface is formed integrally in a three dimensional shape similar to the bottom surface wherein uniform light distribution with at least one curvature point is realized to resolve public nuisance due to stray light and dazzling in diverse indoor and outdoor environments. In addition, the brightness of lighting and energy efficiency may be improved through uniform lighting distribution. Moreover, the bottom surface of the lens and the projection surface can be fabricated with single molding process, so manufacturing process may be simplified and production cost saving is available.