LIGHTING DEVICE WHICH HAS A WIDE ILLUMINATION RANGE, CAPABLE OF IMPROVING THE RADIATION RANGE OF A LIGHT RAY

摘要

PURPOSE: A lighting device is provided to improve the radiation range of a light ray by forming a plurality of first micro-prisms in an optical lens.;CONSTITUTION: A lighting device comprises an optical source module(11) and an optical lens(15). The optical source module includes a substrate(111) and a solid-state light source part(113). The solid-state light source part has a center symmetry axis. The optical lens faces the solid-state light source part. The optical lens has an incidence surface and an emission surface. A plurality of first micro-prisms(155) are formed on the incidence surface or the emission surface of the optical lens. A plurality of first micro-prisms are symmetrically arranged in both sides of the center symmetry axis of the solid-state light source part.;COPYRIGHT KIPO 2011