METHOD FOR REDUCING THE SPECKLE CONTRAST OF A LASER PROJECTION ONTO A PROJECTION SCREEN AND A PROJECTION SCREEN FOR A LASER PROJECTION

摘要

The invention relates to a method for reducing the speckle contrast of a projection of laser light onto a projection screen and to a projection screen for a laser projection, which has at least one layer (2) that is transparent to laser light and at least one layer (3) that reflects the laser light. The reflective layer is flexible, and the transparent layer (2) has a rigidity greater than that of the reflective layer (3) so that laser light striking the projection screen (1) passes through the transparent layer (2) and is reflected on the surface of the at least one reflective layer (3) of the projection screen (1). At least the superficial structure of the reflective layer (3) temporally changes during the projection process in such a manner that a laser light beam striking a point on the reflective layer (3) is reflected in different directions according to a time function.