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在基于多投影机旋转屏的真三维显示器中需要有一种高亮度、窄脉冲工作的白光光源。提出了一种同步照明光学系统,它采用高亮度、连续白光UHP灯作为投影光源,场镜与球面反射镜绕屏幕转轴交替排列,两个透镜组与屏幕同步转动,只有在屏幕正对着投影机时,光束才能从对应的场镜出射照明相应的投影机。该照明光学系统仅用一个光源就能满足真三维显示器中所有投影机照明的需要,并从结构上保证了屏幕转动与投影机投影之间严格同步。该系统成功地应用到了基于多投影机旋转屏的真三维显示器中,三维图像清晰明亮,色彩丰富。论述了系统的工作原理和系统结构,并对投影结果进行了分析。
In true 3D displays based on multi-projector rotary screens, there is a need for a white light source that operates with high brightness and narrow pulse. A synchronous illumination optical system is proposed. The high-brightness and continuous white UHP lamp is used as the projection light source. The field lens and the spherical mirror are alternately arranged around the rotation axis of the screen, and the two lens groups rotate synchronously with the screen. Only when the screen is facing the projection Machine, the beam can be emitted from the corresponding field mirror illuminates the corresponding projector. With only one light source, the illumination optics meets the needs of all projectors in true 3D displays and provides structural guarantees that the screen rotation and projector projection are in perfect sync. The system has been successfully applied to a true 3D display based on a multi-projector rotating screen, with clear and bright 3D images and rich colors. The working principle and system structure of the system are discussed, and the projection results are analyzed.