公开(公告)号：EP2707772A2

公开(公告)日：2014-03-19

申请号：EP12782590.9

申请日：2012-05-14

Applicant: RealD Inc.

Inventor： COLEMAN, David, A. ,  SHARP, Gary, D. ,  CHEN, Jianmin

IPC: G02B27/26

CPC classification number: G02B27/26 ,  G02B5/3083 ,  G02B27/288 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2001/133638 ,  G02F2413/02 ,  G02F2413/07 ,  G03B21/14 ,  G03B21/206 ,  G03B21/2073 ,  G03B35/26 ,  H04N13/337

Abstract: Disclosed embodiments include stereoscopic systems having at least one compensator operable to reduce the sensitivity of polarization control over incidence angle of image source optics and analyzer optics. In an exemplary embodiment, the disclosed compensator is operable to compensate polarization changes induced by optics at either or both the image source subsystem and the analyzer subsystem, in which the polarization changes would be operable to cause leakage at the analyzer subsystem if uncompensated. As such, the disclosed compensators and compensation techniques are operable to reduce leakage at the analyzer subsystem even if the disclosed compensator may be located at the analyzer subsystem.

公开(公告)号：EP2462483A2

公开(公告)日：2012-06-13

申请号：EP10807299.2

申请日：2010-08-09

Applicant: RealD Inc.

Inventor： ROBINSON, Michael, G. ,  CHEN, Jianmin

IPC: G02F1/1335 ,  G02B27/22

CPC classification number: G02F1/133621 ,  G02B27/2214 ,  G02F2001/133622 ,  H04N13/305 ,  H04N13/337 ,  H04N13/341

Abstract: This disclosure describes stereoscopic flat panel display systems based on the polarization encoding of sequentially displayed left and right eye images. The systems comprise line-by-line addressed liquid crystal display (LCD) panels, illuminating back light units and polarization control panels (PCPs). Right and left eye images are written sequentially onto the LCD whose polarization is controlled by a substantially synchronously driven PCP. The backlight may be continuously illuminated, or modulated temporally, spatially or both, as can the PCP.

公开(公告)号：EP1904892B1

公开(公告)日：2010-12-22

申请号：EP06760744.0

申请日：2006-06-12

Applicant: RealD Inc.

Inventor： ROBINSON, Michael, G ,  CHEN, Jianmin ,  SHARP, Gary D. ,  KORAH, John

IPC: G03B21/00 ,  H04N9/00

CPC classification number: G03B35/26 ,  G02B27/26 ,  H04N13/363

Abstract: Described are illumination systems for providing visible images. The systems include a first image projection sub-system operable to provide a first stereo-image output formed by light having a first polarization; a second image projection sub-system operable to provide a second stereo-image output formed by light having a second polarization; a projection means wherein the projection means projects the first and second stereo-image outputs onto a display through a common lens; wherein the system is operable to provide orthogonal first polarization and second polarization. Typically, the first and second image outputs are formed from light having orthogonal polarizations and the system is preferably switchable between providing orthogonal and non-orthogonal first and second images. In preferred embodiments the system is operable to provide nonstereo images while providing increased resolution. Preferred systems include a common light source and a common projection lens. Some systems include digital micromirror devices and liquid crystal on silicon technologies. Related methods of providing visible images are also disclosed.

公开(公告)号：EP2707772B1

公开(公告)日：2018-01-03

申请号：EP12782590.9

申请日：2012-05-14

Applicant: RealD Inc.

Inventor： COLEMAN, David, A. ,  SHARP, Gary, D. ,  CHEN, Jianmin

IPC: G02F1/1335 ,  G02F1/13363 ,  G03B21/20 ,  G03B35/26 ,  G02B5/30 ,  G02B27/26 ,  G02B27/28 ,  H04N13/04

CPC classification number: G02B27/26 ,  G02B5/3083 ,  G02B27/288 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2001/133638 ,  G02F2413/02 ,  G02F2413/07 ,  G03B21/14 ,  G03B21/206 ,  G03B21/2073 ,  G03B35/26 ,  H04N13/337

Abstract: Disclosed embodiments include stereoscopic systems having at least one compensator operable to reduce the sensitivity of polarization control over incidence angle of image source optics and analyzer optics. In an exemplary embodiment, the disclosed compensator is operable to compensate polarization changes induced by optics at either or both the image source subsystem and the analyzer subsystem, in which the polarization changes would be operable to cause leakage at the analyzer subsystem if uncompensated. As such, the disclosed compensators and compensation techniques are operable to reduce leakage at the analyzer subsystem even if the disclosed compensator may be located at the analyzer subsystem.

公开(公告)号：EP2593829A2

公开(公告)日：2013-05-22

申请号：EP11807480.6

申请日：2011-07-13

Applicant: RealD Inc.

Inventor： SHARP, Gary, D. ,  CHEN, Jianmin ,  ROBINSON, Michael, G.

IPC: G02B27/26 ,  G02F1/1335 ,  G02F1/13363 ,  G03B21/00

CPC classification number: H04N13/337 ,  G02B27/26 ,  G02F1/133528 ,  G02F1/133634 ,  G02F1/13471 ,  G02F1/1395 ,  G02F2001/133531 ,  G02F2413/11 ,  H04N13/363

Abstract: Generally, this disclosure concerns the angle sensitivity of polarization switch elements and the resulting impact of the ray direction on performance. More specifically, apparatus and techniques for compensating the angular sensitivity of liquid crystal (LC) polarization switches are described that enhance the performance of polarization switches. For example, a polarization switch is disclosed that transforms linearly polarized light of an initial polarization orientation that includes a first and second liquid crystal cell with a compensator located between the LC cells. The compensator layer is operable to enhance the field of view through the polarization switch. Such compensation techniques are particularly useful for short-throw projection environments.

公开(公告)号：EP2462484A2

公开(公告)日：2012-06-13

申请号：EP10807300.8

申请日：2010-08-09

Applicant: RealD Inc.

Inventor： ROBINSON, Michael G. ,  CHEN, Jianmin

IPC: G02F1/1335 ,  G02B5/30

CPC classification number: G02F1/133621 ,  G02B27/2214 ,  G02F2001/133622 ,  H04N13/305 ,  H04N13/337 ,  H04N13/341

Abstract: This disclosure describes stereoscopic flat panel display systems based on the polarization encoding of sequentially displayed left and right eye images. The systems comprise line-by-line addressed liquid crystal display (LCD) panels, illuminating back light units and polarization control panels (PCPs). Right and left eye images are written sequentially onto the LCD whose polarization is controlled by a substantially synchronously driven PCP. The backlight may be continuously illuminated, or modulated temporally, spatially or both, as can the PCP.