The S4161P is a miniature camera tube. See S4145B for a similar camera tube complete with deflection yoke and signal processing electronics.
The target has a magenta filter window.
The gun, focus and anode assembly within the tube.
The end window envelope is 13.5 mm in diameter, and excluding the base pins is 85 mm tall.
Updated June 21, 2013. shape:end.window construction:all.glass type:camera.tube base: pins:8 pin: