| 摘要 |
A colour image display cathode ray tube 10 has an electron gun 20 directing an axially emerging electron beam 40 onto an output phosphor screen 60 comprises of two portions 56 and 58 of respective different colour phosphor materials and symmetrically disposed relative to the emerging electron beam. A deflection system 82 deflects the beam 40 sequentially in respective inverted raster patterns over the two phosphor screen portions 56 and 58 to produce respective different colour mirror images of the same subject matter. An optical system 140 over the phosphor screen 60 superimposes the two colour mirror images to produce a single multi-colour virtual image 150. <IMAGE> |
