Projection system for daylight pictures - has projector two mirrors and screen mounted on L-section support frame

摘要

Projection system for daylight systems is constructed from an L-shaped stem (1) with a rectangular cross-section, carrying two 45 deg. mirrors (6) and (7), so arranged that the projection beams are rotated through an angle of 180 deg. The projector (4) is situated on the lower platform of the "L" and the light beam in the upper horizontal plane focussed onto a picture screen (5) at the top of the "L". The size of the mirrors has to be adjusted to cater for the size of the light beam passing between the projector and the screen.