Polarizing beam splitter

适于应用在投影系统和显示器中的PBS。偏振分束器(PBS)包括至少一个棱镜，棱镜具有至少一个主面并且折射率至少约1.6，双折射薄膜位于棱镜的主面上。本发明提供了一种独特的至少具有第一材料和第二材料的双折射多层膜。单轴拉伸后，在拉伸方向薄膜呈现小于约0.15单位的折射率差。 The present invention provides a unique polarizing beam splitter (PBS) that is suitable for use in projection systems and displays. The PBS contains at least one p...

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Bibliographische Detailangaben
1. Verfasser:	HEBRINK TIMOTHY J.,MERRILL WILLIAM W.,CONDO PETER D.,HAMER KEVIN M.,WEBER MICHAEL F.,BRUZZONE CHARLES L
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON ELECTROGRAPHY HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PHOTOGRAPHY PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	适于应用在投影系统和显示器中的PBS。偏振分束器(PBS)包括至少一个棱镜，棱镜具有至少一个主面并且折射率至少约1.6，双折射薄膜位于棱镜的主面上。本发明提供了一种独特的至少具有第一材料和第二材料的双折射多层膜。单轴拉伸后，在拉伸方向薄膜呈现小于约0.15单位的折射率差。 The present invention provides a unique polarizing beam splitter (PBS) that is suitable for use in projection systems and displays. The PBS contains at least one prism having at least one major surface and having a refractive index of at least about 1.6 and a birefringent film disposed on the major surface of the prism. The birefringent film is a multi-layer film having at layers of at least a first material and a second material. After uniaxial stretching, the film exhibits a refractive index difference of less than about 0.15 units in the stretched direction.