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    • 4. 发明授权
    • Light source apparatus using a cone-shaped element and an applied
apparatus thereof
    • 使用锥形元件的光源装置及其施加装置
    • US5844638A
    • 1998-12-01
    • US781234
    • 1997-01-10
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki Sonda
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki Sonda
    • H04N9/31G02F1/1335G03B21/20
    • H04N9/3105H04N9/315
    • A projection type display apparatus comprising a light source apparatus which is provided with an elliptic mirror 12, a light source 11 disposed at the first focal point, a cone-like material disposed at the second focal point, a condenser lens 13, display elements 15R-15B, a color separating and synthesizing optical system, second condenser lenses 16R-16B and a projection lens 19. The cone-like material is one selected from the group of a convex cone lens, a concave cone lens 2, a convex cone-like reflector and a concave cone-like reflector 20. In the projection type display element, light emitted from the light source is introduced into the cone-like material and is emitted as divergent light through the conical surface of the cone-like material. The divergent light is introduced into the condenser lens 13 so that the light is rendered to be parallel light fluxes, which are color-separated and introduced into the display elements 15R-15B disposed for each color in order to form light fluxes of display colors. The light fluxes are again subjected to color synthesization, and the synthesized light is projected as a full color picture image on a screen through the projection lens 19. The projection type display apparatus provides a display having uniformity, a good contrast ratio and brightness.
    • 一种投影型显示装置,包括设置有椭圆镜12,设置在第一焦点处的光源11,设置在第二焦点处的锥形材料的光源装置,聚光透镜13,显示元件15R -15B,分色合成光学系统,第二聚光透镜16R-16B和投影透镜19.锥形材料选自凸锥形透镜,凹锥形透镜2,凸锥形透镜, 在投影型显示元件中,从光源发射的光被引入到锥形材料中,并作为发散光通过锥形材料的锥形表面发射。 发散光被引入到聚光透镜13中,使得光成为平行光束,其被分色并被引入到为每种颜色设置的显示元件15R-15B中,以便形成显示颜色的光通量。 光束再次进行颜色合成,并且合成的光通过投影透镜19投影在屏幕上作为全色图像。投影型显示装置提供具有均匀性,良好的对比度和亮度的显示。