Camera shooting optical lens

Abstract

The invention relates to the field of optical lenses and discloses a camera shooting optical lens which comprises seven lenses in total, wherein the seven lenses are sequentially a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power, a fifth lens with negative refractive power, a sixth lens with positive refractive power and a seventh lens with negative refractive power from an object side to an image side; the curvature radius of the object side surface of the first lens is R1; the curvature radius of the object side surface of the second lens is R3; the curvature radius of the object side surface of the third lens is R5, the curvature radius of the object side surface of the fourth lens is R7, the curvature radius of the object side surface of the seventh lens is R13, the curvature radius of the image side surface of the seventh lens is R14, and the followingrelational expressions are satisfied: 1.00 < = R7 / R5 < = 2.20; -5.00 < = R13 / R14 < =-1.50; and R3 / R1 is more than or equal to 3.00 and less than or equal to 8.00. The camera shooting optical lens provided by the invention has good optical performance and meets the design requirements of large aperture, wide angle and ultra-thinness.

Description

technical field [0001] The invention relates to the field of optical lenses, in particular to an imaging optical lens suitable for portable terminal devices such as smart phones and digital cameras, and imaging devices such as monitors and PC lenses. Background technique [0002] In recent years, with the rise of smart phones, the demand for miniaturized photographic lenses has been increasing, and the photosensitive devices of general photographic lenses are nothing more than photosensitive coupling devices (Charge Coupled Device, CCD) or complementary metal oxide semiconductor devices (Complementary Metal -Oxide Semiconductor Sensor, CMOS Sensor), and due to the improvement of semiconductor manufacturing process technology, the pixel size of photosensitive devices has been reduced, and today's electronic products are developing with good functions and thin, light and small appearance. Therefore, it has Miniaturized camera lenses with good imaging quality have become the ma...

AI Technical Summary

Problems solved by technology

Moreover, with the development of technology and the increase in the diversified needs of users, the pixel area of ​​the photosensitive device is continuously shrinking, and the system's requirements for imaging quality are continuously improving. Five-piece, six-piece, and seven-piece lens structures It gradually appears in lens design. Although the common seven-element lens has good optical performance, its focal power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure with good optical performance. At the same time, it cannot meet the design requirements of large aperture, ultra-thin, wide-angle

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