| 摘要 |
Disclosed is an apparatus for adjusting the projecting angle of a projection system. A pair of tubes provided in parallel lengthwise and having supporting plates in the inner sides thereof, respectively; upper and lower facing brackets installed above and under the tubes, respectively, with a predetermined distance; device for transporting tube back and forth installed in the upper and lower brackets to transport the tubes back and forth, while moving back and forth; and device for transporting tube from side to side of which the center portion is combined with the device for transporting tube back and forth and of which the side portions are combined with the supporting plates, to transport the tubes from side to side while being widened and gathering together with respect to the center when the device for transporting tube back and forth moves, are included. The tubes can be adjusted back and forth, and from side to side simultaneously. The operation of the apparatus is advantageous.
|
