| 摘要 |
<p>A light projecting device in which cathode luminescence of a high luminance can occur even when current of a high current density is applied. In this device, an electron emission material (2), which is coated with a layer (14) capable of emitting secondary electrons, is formed on a base (1) via an insulation base (3). At the opposed position to the electron emission material (2), provided is a fluorescent material layer (8), which a secondary electron beam (18) emitted from the layer (14) strikes. <IMAGE></p> |
