discussion overhead projector

摘要

overhead projector with a concave reflection fresnelspiegel (45) to the housing (42) of the projector is fixed and the launch of a transparent film on the reflective surface is possible.from a lichtquellenanordnung in a lamp housing (47) emitted light of the concave fresnelspiegel reflects, occurs in a projektionslinse (48, 49) and is then projected to a projection screen.a reflective mirror (71) is located in the beam path between the concave fresnelspiegel and projektionslinse to redirect the beam, whereby both the concave fresnelspiegel and lichtquellenanordnung and projektionslinse in a single housing is provided.