Optical beam splitter e.g. for video camera - has at least two areas of different degrees of reflection or transmission

摘要

The beam splitter comprises a partially reflecting or partially transmitting optical appts. (20) which has at least two regions (34,35) with different degrees of reflectoin or transmission: an inner region (34) and an outer region (35). USE/ADVANTAGE - In a video camera the beam splitter is installed in the viewfinder beam path (8) for reflecting out a video beam path. Imaging optics is assigned to the beam splitter to form a video image. Video or line camera. Insignificant reduction in brightness. Full view even when looking in at the side of the viewfinder.