| 摘要 |
PCT No. PCT/EP97/04834 Sec. 371 Date May 28, 1998 Sec. 102(e) Date May 28, 1998 PCT Filed Sep. 6, 1997 PCT Pub. No. WO98/15127 PCT Pub. Date Apr. 9, 1998In an arrangement for displaying images on a projection screen, which arrangement includes a laser, which emits a laser beam, and a deflecting device, which is provided for deflecting the laser beam, and an image-generating device which is connected to a controlling device for controlling the laser and the deflecting means. The image-generating device is switchable in two operating modes, the first operating mode being the standard operating mode for projecting, and the second being an operating mode in which the laser radiation is harmless to a person disposed in the region to which the laser has access. In this regard, a safety circuit is provided and comprises at least one sensor, by which a monitored region, which is larger than the region accessible to the laser, between the image-generating means and the projection screen is monitored as to the presence of objects, wherein the image-generating means is switchable into the second operating mode by means of the safety circuit, in the event of an object being present. |
