| 摘要 |
FIELD: optics. ^ SUBSTANCE: optical mechanism has light source, cone-shaped rod, at least one light capacitor, prism module, digital microscopic mirror device (DMD) and set of projection lenses. One end of cone-shaped rod is disposed close to light source. Light, formed b light source, is directed along light path by cone-shaped rod. Cone-shaped rod has size increasing along light path to reduce angle of light dispersion, to improve its uniformity and brightness. Prism module has first prism, having cross-section in form of rectangular triangle, and second prism, which has wedge-shaped cross-section. Prism module receives light from capacitor, transmits it to DMD, received light reflected by DMD and transmits reflected light into set of projection lenses. Set of projection lenses projects light onto external projection planer. ^ EFFECT: higher uniformity; higher efficiency; smaller amount of needs; reduced energy consumption; small sizes. ^ 5 cl, 13 dwg |
