IMAGING LENS SYSTEM

摘要

An imaging lens system comprises, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with refractive power; a third lens element with refractive power having object-side and image-side surfaces being aspheric, at least one surface thereof having at least one inflection point; a fourth lens element with refractive power having a concave object-side surface and a convex image-side surface; a fifth lens element with refractive power having an aspheric object-side surface and an aspheric concave image-side surface, the image-side surface thereof having at least one inflection point.

主权项

1. An imaging lens system including, in order from an object side to an image side:
a first lens element with positive refractive power having a convex object-side surface; a second lens element having a convex object-side surface and a concave image-side surface; a third lens element; a fourth lens element having a convex image-side surface; and a fifth lens element having an object-side surface and a concave image-side surface, the object-side and image-side surfaces thereof being aspheric, the image-side surface thereof being provided with at least one inflection point; wherein there are a total of five lens elements in the imaging lens system, a gap exists between every two adjacent lens elements along an optical axis of the imaging lens system; wherein an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, and the following relation is satisfied:
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