发明名称 |
Passive polarisation modulating optical element and method of making such an element |
摘要 |
A passive polarisation modulating optical element comprises a layer of birefringent material. The layer has substantially fixed birefringence and comprises retarder regions forming a regular pattern, for instance to act as a parallax barrier for a 3D display. The retarders have optic axes aligned in different directions from each other. The element may be associated with a polariser, for instance an output polariser of a liquid crystal device, with the polarising direction of the polariser being parallel to the optic axis of the retarders. Thus, the retarders have no effect on the intensity of light passing through the element whereas the retarders act as half waveplates and rotate the polarisation vector of light passing therethrough, for instance by 90 DEG .
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申请公布号 |
US6055103(A) |
申请公布日期 |
2000.04.25 |
申请号 |
US19980105472 |
申请日期 |
1998.06.26 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
WOODGATE, GRAHAM JOHN;JACOBS, ADRIAN MARC SIMON;HARROLD, JONATHAN;MOSELEY, RICHARD ROBERT;EZRA, DAVID |
分类号 |
G02B5/30;G02B27/00;G02B27/26;G02B27/28;G02F1/13;G02F1/1335;G03B35/24;H04N13/00;H04N13/04;(IPC1-7):G02B5/30 |
主分类号 |
G02B5/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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