公开(公告)号：EP2732337A2

公开(公告)日：2014-05-21

申请号：EP12811946.8

申请日：2012-07-13

Applicant: RealD Inc.

Inventor： SHARP, Gary, D. ,  COLEMAN, David, A. ,  KONDO, Darlene, K.

IPC: G03B21/56

CPC classification number: G03B21/56 ,  Y10T156/1089 ,  Y10T428/24752

Abstract: The present disclosure describes a manufacturing method for seaming materials. The process may be suitable for manufacturing high performance projection screens using a number of methods including, but not limited to, conventional (convert-before-coating) methods, or convert-after-coating methods. An objective of the present disclosure is to identify a process which may substantially minimize distortion of the local surface normal in the vicinity of the join.

公开(公告)号：EP1825466B1

公开(公告)日：2012-02-22

申请号：EP05854192.1

申请日：2005-12-16

Applicant: RealD Inc.

Inventor： SHARP, Gary, D.

IPC: G11B7/135 ,  G02B5/30 ,  G11B7/22

CPC classification number: G11B7/1275 ,  G02B5/3083 ,  G11B7/1365 ,  G11B7/22 ,  G11B2007/0006

Abstract: Chemically-bonded laminated polymer achromatic polarization devices (110), such as circular polarizers, are disclosed for use in optica disc (124) pickup heads. Chemically-bonded laminated polymer achromatic, polarization devices have the benefit of providing stable retardation and optic axis over an extended wavelength range, thereby ensuring orthogonal polarization in double-pass for two or more laser wavelengths. Moreover, the chemically-bonded laminated polymer achromatic polarization devices can be symmetric in construction, such that there is no specific input and output side. This alleviates the need to produce geometries that prohibit inversion of the part when installed in the system.