Lens Assembly

A lens assembly includes a first, second, third, stop, fourth, fifth, sixth, and seventh in order from an object side to an image side along an optical axis. The first lens is a meniscus lens with refractive power and includes a convex surface facing the object side and a concave surface facing the...

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Hauptverfasser:	LEE, Jian-Wei, LIN, Shu-Hung
Format:	Patent
Sprache:	eng
Schlagworte:	OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS
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creator	LEE, Jian-Wei LIN, Shu-Hung
description	A lens assembly includes a first, second, third, stop, fourth, fifth, sixth, and seventh in order from an object side to an image side along an optical axis. The first lens is a meniscus lens with refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The second lens is with negative refractive power. The third lens is with positive refractive power and includes a convex surface facing the image side. The fourth lens is with refractive power and includes a convex surface facing the image side. The fifth lens is with positive refractive power and includes a convex surface facing the object side. The sixth lens is a biconcave lens with negative refractive power. The seventh lens is with refractive power and includes a convex surface facing the image side. The lens assembly satisfies: 4.3≤TTL/BFL≤5.3.
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subjects	OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS
title	Lens Assembly
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