Patterned polarization-rotating optical element and method of making the same, and 3D display

A patterned polarization-rotating optical element includes a layer of birefringent material having a thickness d and birefringence DELTA n, wherein the layer includes at least one first region and at least one second region, at least one of the first and second regions comprising twisted birefringen...

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Bibliographische Detailangaben
Hauptverfasser:	TILLIN, MARTIN DAVID, GILLIAN, MARGARET DAVIS
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A patterned polarization-rotating optical element includes a layer of birefringent material having a thickness d and birefringence DELTA n, wherein the layer includes at least one first region and at least one second region, at least one of the first and second regions comprising twisted birefringent material having a fixed twist angle phi such that DELTA nxd>> phi x lambda / pi , where lambda is a wavelength in vacuum of optical radiation, so that the at least one first region provides a first fixed angle of rotation of polarization of light and the at least one second region provides a second fixed angle of rotation of polarization of light, the second angle being different from the first fixed angle.