Invention Grant
- Patent Title: Projection display device
- Patent Title (中): 投影显示设备
-
Application No.: US13703198Application Date: 2010-12-15
-
Publication No.: US08982289B2Publication Date: 2015-03-17
- Inventor: Cheng Huang , Lei Zhang , Deming Tang
- Applicant: Cheng Huang , Lei Zhang , Deming Tang
- Applicant Address: CN Shanghai
- Assignee: Lexvu Opto Microelectronics Technology (Shanghai) Ltd
- Current Assignee: Lexvu Opto Microelectronics Technology (Shanghai) Ltd
- Current Assignee Address: CN Shanghai
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: CN201010200690 20100612
- International Application: PCT/CN2010/079816 WO 20101215
- International Announcement: WO2011/153801 WO 20111215
- Main IPC: G02F1/1335
- IPC: G02F1/1335 ; G03B21/20 ; G02B27/26 ; G02B27/28 ; G03B21/14 ; H04N9/31 ; H04N13/04 ; G02F1/13
Abstract:
A projection display device includes a first display panel (23a), a second display panel (23b), a PBS (Polarization Beam Splitter) (22) with a first surface (22a) and a second surface (22b) opposite each other, a light recycling device (25a, 25b and 23b), and a projection lens (24). The PBS (22) transmits a first type parallel polarized light and reflects a second type parallel polarized light. The light recycling device (25a, 25b and 23b) transforms the first type parallel polarized light transmitted by the PBS (22) into the second type parallel polarized light which carries a second image information, then reversely transmits the second type parallel polarized light to the second surface (22b) of the PBS (22). The projection display device improves the light utilization efficiency and can be used for 3D display.
Public/Granted literature
- US20130076995A1 PROJECTION DISPLAY DEVICE Public/Granted day:2013-03-28
Information query
IPC分类:
