Optical assembly for displaying information - includes light source in opaque receptacle which diffuses light through transparent bent holder to illuminate script

摘要

The device has a light source (4), held in an opaque receptacle (2). This diffuses through a slot (1) in the receptacle. There is another part (6), made of transparent material, with at least one flat surface. This diffuses light by side edges (9). At one end of this part (6) is a tongue (5) which fits into the slot (1). The part (6) has a returned section (10) to allow for the insertion of information documents. The device can be associated with a negative viewer, diffusing light against the screen to cover the negative.