发明名称 Polarized lighting apparatus and projection type display device.
摘要 <p>A polarization luminaire comprises a light source (401) for emitting light, whose polarization directions are random; a polarized light splitting means (402) having a polarized light splitting film (426) to split output light of the light source (401) into p-polarized light and s-polarized light; a first condensing mirror plate (1901) to condense the p-polarized light emitted from the polarized light splitting means (402) and to form a plurality of secondary light source images represented by the p-polarized light at first positions; a second condensing mirror plate (1902) to condense the s-polarized light emitted from the polarized light splitting means (402) and to form a plurality of secondary light source images, which are represented by the s-polarized light, at second positions slightly different from the first positions; a first quarter-wave plate (1921) between the first condensing mirror plate (1901) and the polarized light splitting means (402); a second quarter-wave plate (1922) between the second condensing mirror plate (1902) and the polarized light splitting means (402); and a light condenser lens plate (1941) which consists of lenses and a half-wave plate (446) that are placed in the vicinity of the first and second positions. <IMAGE> <IMAGE> <IMAGE> <IMAGE></p>
申请公布号 HK1014271(A1) 申请公布日期 2005.11.04
申请号 HK19980115545 申请日期 1998.12.24
申请人 SEIKO EPSON CORPORATION 发明人 YOSHITAKA ITOH;KUNIO YONENO;JUNICHI NAKAMURA;TADAAKI NAKAYAMA
分类号 G02B27/28;G02F1/13357;H04N9/31;(IPC1-7):G02B;H04N;G02F 主分类号 G02B27/28
代理机构 代理人
主权项
地址