TV camera alignment device

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• Video camera tube — In older video cameras, before the mid to late 1980s, a video camera tube or pickup tube was used instead of a charge coupled device (CCD) for converting an optical image into an electrical signal. Several types were in use from the 1930s to the… …   Wikipedia

• Professional video camera — A professional video camera (often called a television camera even though the use has spread) is a high end device for recording electronic moving images (as opposed to a movie camera, that records the images on film). Originally developed for… …   Wikipedia

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• Optacon — The Optacon (OPtical to TActile CONverter)[1] is an electromechanical device that enables blind people to read printed material that has not been transcribed into Braille. Contents 1 Description 2 History …   Wikipedia

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• Iron sight — Sight picture through iron sights of an H K MP5 submachine gun. The annular shroud around the front post sight is aligned with the rear peep sight to ensure the weapon is properly trained. Iron sights are a system of shaped alignment markers… …   Wikipedia