OPTICAL SYSTEM FOR ILLUMINATION

摘要

An optical system for illumination includes a light source (1) and an optical assembly (4) which surrounds the light source (2). The optical assembly (4) comprises a periphery surface (5) and a light emitting surface (6), wherein the light emitting surface (6) is inclined and the inclined angle thereof can be changed as required. When the light source (1) cooperates with the optical assemblies (4) with different inclined angles of the light emitting surface, illuminance for different regions and ranges is provided.