Light image projection device for projecting image in open over long distance onto projection surface has electronic control unit controlling fans, webcams feeding webcam signals to computer continuously connected to remote central computer

摘要

The device has a housing with air inlet and outlet openings (8,9) with moisture filters (11,12) with associated electric fans (13,14) and first and second optical openings (16,17) housing a light image projector (18) with projection optics associated with the first optical opening, a webcam (23) with receiving optics associated with the second optical opening, a computing device (20) providing signals for the image to be projected and an electronic control unit (15) that controls the fans and webcams and feeds webcam signals to the computing device, which is continuously connected to a remote central computer by a telecommunications connection.