Abstract: A rear projection television receiver has an image source, first and second mirrors, and a screen. Light travels from the image source to the screen along a first light path via the first and second mirrors and along a second path that bypasses the mirrors. A light baffle assembly comprising a plurality of elongated baffle elements is located in both the first and second light paths. The angle of the individual baffle elements is adjusted so that light rays are unaffected along the first light path and substantially completely blocked along the second light path.

Abstract: In a wideband video signal processing system, video output signals from a video driver amplifier are passively AC coupled to an intensity control electrode of an image display device. A keyed feedback DC restoration circuit is connected to the intensity control electrode via a high impedance resistor network comprising the feedback path of the restoration circuit. Image brightness control is accomplished via the restoration circuit without varying the operating point of the driver amplifier.