| 摘要 |
An illuminating device comprising a light source for emitting a plurality of light beams ( 207, 208, 209 ) of different colors, a plurality of rotating beam scanners ( 102, 103, 104 ) and a plurality of scanning lenses ( 109, 110, 111 ). The beam scanners have spiral reflection surfaces ( 102, 103, 204 ) formed on the outer peripheries of cylindrical bodies, Each colored light beam is shone onto each reflection surface from a direction parallel to a rotating axis, and magnified by each scanning lens after reflected to scan an illuminated area with a plurality of beams of different colors one after another. Accordingly, the illuminating device can enhance scanning linearity, reduce noise due to a minimal windage loss, and decrease costs and power consumption.
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