| 摘要 |
A screen for projection (11) being made out of an irregular surface (43), which is either light-absorbing or has been coated with a light-absorbing film (42), which in turn has been coated with a filter (41), wherein the Fourier transform of the irregular surface (43) can provide a significant spectrum with considerably higher frequencies than the frequencies which are obtained at Fourier transformation of the higher pixel structure projected on the picture and wherein the reflection factor (8) for the filter (41) is higher for the wavelengths which correspond to the wavelengths of the illuminating light (R, G, B), than for the wavelengths being outside the wavelengths of the illuminating light. |
