发明名称 | Anamorphic illumination of micro-electromechanical display devices employed in multimedia projectors | ||
摘要 | Micro-electromechanical display device (“MDD”)-based multimedia projectors (90, 120) of this invention employ an arc lamp (32), a color modulator (42), and anamorphic illumination systems (94, 121) for optimally illuminating a MDD (50, 76) to improve projected image brightness. MDDs employ off-axis illumination wherein incident and reflected light bundles are angularly separated about a hinge axis (78, 110) and the MDD is illuminated by the anamorphic illumination systems of this invention having a slow f/# parallel to the hinge axis and a faster f/# perpendicular to the hinge axis. The resulting anamorphic light bundles (86, 88, 112, 114) illuminate and reflect more light into and off the MDD and through a fast f/# projection lens. | ||
申请公布号 | USRE45504(E1) | 申请公布日期 | 2015.05.05 |
申请号 | US201313829752 | 申请日期 | 2013.03.14 |
申请人 | Seiko Epson Corporation | 发明人 | Peterson Mark |
分类号 | G03B21/00;G03B21/26;G03B21/14;G03B21/28;G02B5/32;G02B27/09;H04N9/31 | 主分类号 | G03B21/00 |
代理机构 | Oliff PLC | 代理人 | Oliff PLC |
主权项 | 1. In a multimedia projector in which a micro-electromechanical display device (“MDD”) includes an array of micromirrors that each pivot on a hinge axis to effect pixel on- and off-states whereby the MDD provides a projected image by receiving an incident illumination bundle and for pixels in the on-state reflects a reflected image bundle through a projection lens, an apparatus for increasing a brightness of the projected image comprising: an illumination source propagating light rays along an optical axis; an anamorphic optical device receiving the light rays and forming an anamorphic incident illumination bundle that illuminates the MDD at a first f/number perpendicular to a first of the hinge axes and at a substantially faster second f/number parallel to the first hinge axis. | ||
地址 | Tokyo JP |