发明名称 |
BILDEPROJEKTOR. |
摘要 |
<p>A full color high contrast image projection system with oil coupled dichroics is disclosed. The preferred embodiment includes a unitary optical tank in which a prepolarizer and dichroic separators are mounted in fixed alignment relative to a main polarizing prism. The prepolarizer acts on the incident light from a source to polarize the green light and reflect the S component out of the system. The red and blue components are transmitted unchanged. The main polarizer is mounted at a 90 DEG twist relative to the prepolarizer so that it reflects the green light to a first light valve via a first dichroic separator. The polarized red and blue components are transmitted to second and third light valves via a second dichroic separator. The light valves modulate the polarization state of incident light before returning it to the second beamsplitter. The second beamsplitter then recombines the individual beams into a single output beam. This beam is projected by a telecentric projection lens to provide a full color high contrast image.</p> |
申请公布号 |
NO164064(B) |
申请公布日期 |
1990.05.14 |
申请号 |
NO19820004374 |
申请日期 |
1982.12.27 |
申请人 |
HUGHES AIRCRAFT COMPANY |
发明人 |
GAGNON, RALPH J.;CARSON, ROBERT T. |
分类号 |
G02F1/133;G02F1/13;G02F1/1335;G02F1/135;G09F9/00;H04N9/31;(IPC1-7):G02B27/00 |
主分类号 |
G02F1/133 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|