公开(公告)号：US6147720A

公开(公告)日：2000-11-14

申请号：US579655

申请日：1995-12-27

申请人： William F. Guerinot, deceased ,  by Marlene Guerinot, legal representative ,  Matthew Scott Brennesholtz ,  Douglas A. Stanton

发明人： William F. Guerinot, deceased ,  by Marlene Guerinot, legal representative ,  Matthew Scott Brennesholtz ,  Douglas A. Stanton

IPC分类号： G02F1/13 ,  G02B27/18 ,  G02F1/1335 ,  G02F1/13357 ,  G03B21/00 ,  G09F9/00 ,  H04N5/74 ,  H04N9/31 ,  H04N5/64 ,  H04N9/12

CPC分类号： H04N9/3114 ,  H04N9/3164

摘要： A projection system includes first and second light sources which are disposed at an angle with respect to each other and are activated during respective different phases of an illumination cycle to illuminate a spot on different sides of a segmented rotary filter wheel. The filter wheel is alternately used to transmit light from one of the light sources, and to reflect light from the other light source, to a light valve, the output of which is projected onto a screen. The wheel segments may be alternately clear and mirrored or may alternately transmit and reflect colors to produce color sequential illumination of the light valve. In addition to filter wheels producing sequences of red, blue, green illumination, including the possibility of splitting a color phase into non-adjacent smaller phases to reduce color artifacts, a simple filter wheel which in two rotations produces a sequence of red, blue, green, cyan, magenta, yellow color illumination, resulting in an expanded color gamut, is also disclosed. Blanking intervals during which both lamps are turned off span each passage of a segment boundary through the spot.

摘要翻译： 投影系统包括第一和第二光源，第一和第二光源相对于彼此以一定角度设置，并且在照明周期的各个不同阶段被激活，以照亮分段的旋转滤光轮的不同侧上的光点。 滤光轮交替地用于从一个光源透射光并将来自另一个光源的光反射到光阀，其输出投影到屏幕上。 轮段可以交替地清除和镜像，或者可以交替地透射和反射颜色以产生光阀的颜色顺序照明。 除了产生红色，蓝色，绿色照明序列的滤光轮之外，还包括将色相分解成不相邻的较小相以减少颜色伪影的可能性，在两次旋转中的简单的滤光轮产生红，蓝， 绿色，青色，品红色，黄色照明，导致色域扩大。 两个灯关闭期间的消隐间隔跨越通过斑点的段边界的每个通道。