| 摘要 |
The invention disclosed relates to a light housing adapted to retain a light source. The light housing has a first reflector and a second reflector mounted to rotate concentrically about a main axis. A transmission system is present between the first and second reflector. Rotation of the first reflector in a first direction about the main axis rotates the second reflectors via the transmission system at the same angular velocity as the first reflector about the main axis to retain the same relative angular position between the first and second reflectors. Rotation of the first reflector in a second direction of rotation, opposite to the first direction, rotates the second reflector, via the transmission system to vary the relative angular position between the first and second reflector. |
