Illuminating apparatus with a light control channel for photographic enlarging equipment with a rotatable picture stage in the plane of the negative to be copied

摘要

An illuminating system for use in a photographic enlarging apparatus having first and second light control channels is disclosed. The light control channels receive and transmit light from a light source; the light exit end of the first light control channel has a diagonal that is less than the longest side of the cross-section of the light entrance end of the second light control channel. A picture stage for receiving and supporting a negative to be projected is secured to the light exit end of the second light control channel. The second light control channel and the picture stage are mounted for unitary rotational movement about an axis normal to the plane of the negative.