Abstract: A bias light supply device applies bias light through a color separation stripe filter to a color TV imaging device which generates a multiplex color TV video signal. The bias light supply device is disposed in front of the color TV imaging device and is made up of a bias light source for emitting bias light, and a light conducting member made of acrylic resin or glass to apply bias light from the bias light source to the imaging device through the filter. Arranged parallel to the surface of a photoelectric transducer section, the light conducting member has light inlet portions, reflective portions and light outlet portions and is mounted in an opening formed in a color TV camera casing. All the outer surfaces of the light conducting member, except for the light inlet portions, reflective portions and light outlet portions, are covered with light intercepting members. The quantity and color temperature of the bias light are adjustable.

Abstract: A color TV imaging apparatus comprises a TV imaging device for generating a composite color TV video signal by use of a color separation stripe filter, at least two demodulators for individually producing color signal components by demodulating a carrier signal which is generated as an output signal from the imaging device, and a bias light supply device for applying bias light to a photoelectric transducer section of the imaging device through the filter. At least one of the quantity and color temperature of the bias light is set such that the carrier color signals to be demodulated by the demodulators become greater than the peak-to-peak value of noise contained in the signal. The quantity of bias light is adjusted by controlling bias light sources of the bias light supply device, while a color temperature of bias light is selected by means of color temperature conversion filters positioned in light outlet portions of a flat light conducting element which is included in the bias light supply device.