Internal focusing lens

An internal focusing lens includes sequentially from an object side, a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. During focusing, the second lens group is moved along the opt...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	HOSOI MASAHARU, SAKAI TAKAHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS
Online-Zugang:	Volltext bestellen
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