PROJECTOR FOR PROJECTING TEST REPRESENTATIONS FOR EYE INVESTIGATIONS

摘要

This projector has a rotatable disc (1) with a number of projectable displays (2) arranged concentrically with the axis of rotation of the disc. There is further located on the disc a number of coding tracks (I-V) which are scanned by means of a scanning member (4) which is provided for this purpose with sliding-action contacts. The coding tracks are subdivided into the same number of sections as there are displays present. Each display is assigned one of the sections and has a coding (3). Furthermore, the projector has electronic means which permit each display to be brought, in response to a control command, into the projection beam path in the shortest way.