| 摘要 |
An optical system, including a light source module, a first lens array and a second lens array, is disclosed. The first lens array is located on one side of the light source module and includes first lenses. The first lenses are arranged according to a first pattern which is non-radially symmetrical and has a first major axis. The second lens array is located on one side of the first lens array and includes second lenses. The second lenses are arranged according to a second pattern and have optical axes aligned with optical axes of the first lenses. The second pattern is non-radially symmetrical and has a second major axis which deflects from the first major axis by a first angle. With this arrangement, the light source module can provide a telecentric light beam formed by radially symmetrical light cones, and the first and second lens arrays can transform this telecentric light beam into a light beam with non-radially symmetrical light cones illuminated onto a target area.
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