| 摘要 |
A display comprises a light source 18 for producing activation light at a predetermined narrow range of wavelengths; a light modulator 30 such as an LC cell formed from an array of pixels and adapted to modulate the excitation light; and a screen, preferably a photoluminescent screen 16, arranged to emit a visible output when struck by the narrow-band excitation light passing through the cell. The light source contains a set of light-emitting point sources such as LEDs 24, and an optical arrangement 26 is included between the sources and the LC cell to form the excitation light into a slightly divergent beam. In this way a seamless composite image can be produced on the screen. |
