Optical system for color television cameras

Details Optical system for color television cameras Optical system for color television cameras

1977-12-12

1979-08-14

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

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H04N 904

Patent

active

041647521

ABSTRACT:
An optical system for a color television camera includes an interchangeable taking lens, a color separating prism block located behind the taking lens and three image pick-up tubes for different color images located behind the prism block. Between the prism block and at least one of the pick-up tubes an optical element which is capable of varying the optical path length is inserted. The optical path length varying element may be a plane parallel plate or a combination of two optical wedges having parallel opposite end faces. The plane parallel plate changes the optical path length by its thickness. The combination of the two optical wedges varies the optical path length by sliding the wedges with respect to each other to vary the distance between the opposite end faces.

REFERENCES:
patent: 3162713 (1964-12-01), Koester et al.
patent: 4058827 (1977-11-01), Ando et al.

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