发明名称 |
Real image projection device having plastic curved mirror for improving image and correcting aberrations |
摘要 |
A device using a low-cost plastic curved mirror and several combinations of methods for reducing aberrations to improve a real image projection system is provided, so as to reduce ghost and astigmatism phenomenon. The real image projection system includes a curved mirror having two different optical surfaces of revolution, one on a convex surface and the other on a concave surface. The real image projection system may include at least a curved reflector positioned in a tilted configuration, and an optical axis of the reflector does not coincide with a viewing axis. A beampath between a target source and the curved reflector neither passes through a beamsplitter nor is reflected thereby. The real image projection system may further include a circular polarizer for circularly polarizing a light beam in a primary light path between the mirror and the real image, eliminating ghost image caused by outside light sources.
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申请公布号 |
US7517090(B2) |
申请公布日期 |
2009.04.14 |
申请号 |
US20070843134 |
申请日期 |
2007.08.22 |
申请人 |
PROVISION INTERACTIVE TECHNOLOGIES, INC. |
发明人 |
VRACHAN JEFFREY L.;THORNTON CURTIS L. |
分类号 |
G03B21/28;G02B27/14;G03B21/26 |
主分类号 |
G03B21/28 |
代理机构 |
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