Optical imaging lens

The invention discloses an optical imaging lens which comprises a lens barrel, a four-piece lens group and a spacing element group, wherein the four-piece lens group and the spacing element group are arranged in the lens barrel; the four-piece type lens group comprises a first lens with positive foc...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SONG YAZHU, ZHANG CHAOJUN, WENREN JIANKE, GUO YANLING, DAI FUJIAN, DING XIANCUI, ZHAO LIEFENG
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 ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	The invention discloses an optical imaging lens which comprises a lens barrel, a four-piece lens group and a spacing element group, wherein the four-piece lens group and the spacing element group are arranged in the lens barrel; the four-piece type lens group comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power which are sequentially arranged from the object side to the image side along the optical axis; the spacing element group comprises a second spacing element and a third spacing element, the second spacing element is arranged on the image side surface of the second lens and is in contact with the image side surface of the second lens, and the third spacing element is arranged on the image side surface of the third lens and is in contact with the image side surface of the third lens; the inner diameter d0s of the object-side end face of the lens barrel, the inner diameter d0m of the ima