UNI-DIRECTIONAL GRADIENT INDEX OF REFRACTION GLASSES

Tailored glass bodies (10) having a substantial change in index of refraction (a DELTA n of at least about 0.08 along an axis) are provided. The glass body is characterized by two substantially parallel surfaces, with one surface having a first composition (12t) and the other surface a second compos...

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Bibliographische Detailangaben
Hauptverfasser:	HAGERTY, JAMES J, PULSIFER, DAVID N, RINDONE, GUY E
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY GLASS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS
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Beschreibung
Zusammenfassung:	Tailored glass bodies (10) having a substantial change in index of refraction (a DELTA n of at least about 0.08 along an axis) are provided. The glass body is characterized by two substantially parallel surfaces, with one surface having a first composition (12t) and the other surface a second composition (12b). The composition of the glass body varies in some predetermined fashion between the two surfaces (12i1-12i8) to provide a predetermined graded index of refraction. A method is also provided to tailor the glass body so that the two compositions have one or more of the following properties substantially constant: thermal coefficient of expansion, glass fusion temperature, Abbé value, and density.