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    • 25. 发明授权
    • Projection type color liquid crystal optical apparatus
    • 投影型彩色液晶光学装置
    • US5754260A
    • 1998-05-19
    • US810984
    • 1997-02-27
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki SondaMasaya KunigitaYoshinori Hirai
    • Yoshiharu OoiTsuneo WakabayashiShigeyuki SerizawaYoshiyuki SondaMasaya KunigitaYoshinori Hirai
    • H04N9/31G02F1/1335
    • H04N9/315H04N9/3105
    • A light source optical system for projection 1, dichroic mirrors 21, 22 disposed to have a predetermined included angle .beta., a reflection type liquid crystal optical element blocks 31-33 each including a closely contacted converging lens and having a reflection surface and a projection optical system 4 are provided, wherein the normal line of a dichroic mirror surface and the optical axis of incident light form an included angle .alpha.; the normal line of the reflection surface and the optical axis of incident light form an included angle .gamma.; light emitted from a light source is color-separated so as to become color lights; the color lights are rendered to be parallel light beams, and are modulated and reflected by means of the reflection type liquid crystal optical elements; the reflected light beams are color-synthesized; and the color-synthesized light is projected through a projection lens. A projection type color liquid crystal optical apparatus having a compact shape and a high brightness is obtainable.
    • 用于突起1的光源光学系统,设置成具有预定夹角β的分色镜21,22,每个包括紧密接合的会聚透镜并具有反射表面的反射型液晶光学元件块31-33和具有反射面的投影光学 系统4,其中分色镜表面的法线和入射光的光轴形成夹角α; 反射面的法线和入射光的光轴形成夹角γ; 从光源发出的光被颜色分离,成为色光; 彩色光成为平行光束,通过反射型液晶光学元件进行调制和反射; 反射光束被彩色合成; 并且通过投影透镜投射彩色合成光。 可以获得具有紧凑形状和高亮度的投影型彩色液晶光学装置。