| 摘要 |
An illumination system comprises a light source, an optical element, a detection module, and a drive module. The optical element has a plurality of light transmitting regions through which light from the light source passes to produce a corresponding distribution curve of luminous intensity. A detection module thereof is used to detect a subject area and output a detection signal, and the drive module moves the optical element according to the detection signal of the detection module to generate required light intensity pattern of the light emitted from the light source, in which the light passes through a corresponding one of the light transmitting regions of the optical element. |
