PROJECTION IMAGE DISPLAY DEVICE,申请号EP20120749328-传众专利搜索

PROJECTION IMAGE DISPLAY DEVICE

申请公布号：EP2680071(A1)

申请号：EP20120749328

申请日期：2012.02.24

申请公布日期：2014.01.01

申请人：

HITACHI CONSUMER ELECTRONICS CO. LTD.

发明人：HIRATA KOJI;KAKUDA TAKASHI;KIMURA NOBUYUKI

分类号：G03B21/14;G02B27/26;G03B21/00;G03B21/20;G03B33/06;G03B33/12;G03B35/26;H04N9/31;H04N13/04

主分类号：G03B21/14

摘要：The purpose of the present invention is to provide a projection image display device in which all of the multiple light sources to be used are positioned optimally, regardless of the mode of installation of the device. This projection image display device has two illumination optical systems (1, 2) that are each provided with a light source (111, 211), a color separator for separating into three colors of light, a liquid crystal panel (150, 250) for forming an optical image, and a color synthesis prism (160, 260) for color-synthesizing. A polarization beam splitter (3) for synthesis synthesizes an optical image formed by the illumination optical system (1, 2), and projects the same from a projection lens (4). The optical axis (101, 201) of each light source (111, 211) is positioned within the same plane as the optical axis (401) of the projection lens (4), and so as to orthogonally intersect the optical axis (401) of the projection lens.