Color television camera

Details Color television camera Color television camera

H - Electricity

04

N

350/43

H04N 9/04 (2006.01) H04N 5/225 (2006.01) H04N 5/238 (2006.01)

Patent

CA 1171520

ABSTRACT OF THE DISCLOSURE A color television camera comprises a color pickup device such as a color pickup tube, an automatically moveable infrared cut filter disposed in the light path to an image receiving face of the pickup device, a brightness detection means which changes its output signal when observed brightness falls below a predetermined level, a driving means for driving the automatically moveable infrared-cut filter for removing it from ththe light path to the image receiving face, and a video signal circuit including a switching circuit operative to constitute a color video signal producing circuit when the brightness is above the predetermined level and the infrared-cut filter is inserted in front of the image receiving face, and to constitute a monochrome video signal producing circuit when the brightness is below the predetermined level and the infrared-cut filter is removed from the light path to the image receiving face.

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