Telephoto lens based on automatic ranging, and method and device for realizing automatic focusing

The invention discloses a method for realizing automatic focusing of a telephoto lens based on automatic ranging. The method comprises the following steps of obtaining a distance value and theoreticalvalue of a clear focusing position of a motor through an object distance test experiment; forming a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG HUADONG, WEI JIANHONG, ZHENG YOUJIE, LONG WEIHUA, WANG YAN
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 CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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