| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting module for diffusing a light beam and modifying the size and shape of a projection beam. SOLUTION: This device includes a light source 10 and a reflector 12 for directing light along an optical path. A primary lens element 16 reduces the cross sectional area of a light zone where the light is influenced upon entry into a diffusing assembly 18 in the optical path. In order to generate a light beam having a shape and/or a size desired by a user, diffusing elements are arranged in the diffusing assembly 18 under the change of a combination or an extent. The diffusing elements may physically be positioned in the optical path, due to the refracting action of the lens element 16, but in this case the diffusing elements change light projected from the lighting module without any influence on the light by the time when the diffusing elements are rotated for aligning a diffusing element segment with a lens segment. |
