WIDE-ANGLE PHOTOGRAPHIC OBJECTIVE

A wide-angle objective in accordance with the invention comprises, in an order from an object-side end to an image-side end, a front group of total positive refractive power having at least four lenses; a middle group of total positive refractive power having at least three lenses; and a rear group...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ROTH, Stefan, KELLER, Kathrin
Format:	Patent
Sprache:	eng
Schlagworte:	OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS
Online-Zugang:	Volltext bestellen
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