Diapositive viewer using TV receiver - has lighting and selector unit supported on magazine with optical system including colour sensing section

摘要

The device for reproducing diapositives on the screen of a television tube includes a converter (2) mounted above the magazine (4) with a lamp (14) behind the selection mechanism, and a power unit (18) with a mains supply socket (22) and a socket for connection to the aerial of a domestic TV receiver. At the other side of the selection mechanism is a condenser lens (28) followed by an optical system (30) with an output pupille incorporating three photoelectric sensors (38,40,42) and three colour filters (44,46,48) for three basic colours. The device can use one solid glass filter, and the three sensors can be mounted in a single plane. Between the light source and the selector mechanism is another optical system (24) with a shutter (36) forming an entry pupille. Alternative optical systems are also avilable. available.