Imaging lens assembly

Abstract

An imaging lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element with negative refractive power has a convex object-side surface and a concave image-side surface. The second lens element has positive refractive power. The third lens element has refractive power. The fourth lens element with refractive power has an object-side surface and an image-side surface being aspheric. The fifth lens element with positive refractive power has an object-side surface and an image-side surface being aspheric. The sixth lens element with negative refractive power has a concave image-side surface, wherein at least one reflection point is formed on the image-side surface thereof. The first lens element is configured with negative refractive power while the object end of the imaging lens assembly is configured with positive refractive power suchthat the image capturing range is increased, the spherical aberration reduced, and chromatic aberration can be flexibly adjusted and controlled.

Description

technical field [0001] The present invention relates to an image system lens group, and in particular to a miniaturized image system lens group applied to electronic products. Background technique [0002] In recent years, with the rise of portable electronic products with photography functions, the demand for miniaturized optical mirrors has been increasing, and the photosensitive elements of general optical mirrors are nothing more than charge coupled devices (CCD). Or Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor), and with the improvement of semiconductor process technology, the pixel size of the photosensitive element is reduced, and the miniaturized optical mirror group is gradually developing into the high-pixel field. Therefore, the requirements for image quality are also increasing. [0003] Traditional miniaturized optical mirrors mounted on portable electronic products, as shown in US Patent No. 8,000,031, mostly use a five-piece lens structure. How...

AI Technical Summary

Problems solved by technology

[0003] Traditional miniaturized optical mirrors mounted on portable electronic products, as shown in US Patent No. 8,000,031, mostly use a five-piece lens structure. However, due to smart phones (Smart Phone) and PDA (Personal Digital Assistant) The popularity of high-end mobile devices has led to a rapid increase in the number of pixels and imaging quality of optical mirrors. The known five-piece optical mirrors will not be able to meet higher-level photography needs.

[0004] Although there is a further development of the six-piece optical lens group at present, as disclosed in U.S. Publication No. 2012 / 0170142, it is an optical lens group with six lenses, but it is not designed to configure one of the two lenses near the object side. With a negative refractive power and a strong positive refractive power lens, the back focal length of the optical mirror group cannot be effectively shortened, making it difficult to maintain the miniaturization of the total length of the optical mirror group under the premise of having a large viewing angle, let alone through the two lenses mutual compensation to eliminate aberrations and distortion

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