Camera Optical Lens

Abstract

The present invention relates to the field of optical lenses, and discloses a photographic optical lens. The photographic optical lens comprises in sequence from the object side to the image side: a first lens with positive refractive power, a second lens with negative refractive power, and a negative lens with negative refractive power. The third lens, the fourth lens and the fifth lens with negative refractive power; wherein, the focal length of the imaging optical lens is f, the focal length of the first lens is f1, and the focal length of the third lens is f3, the axial distance from the image side of the third lens to the object side of the fourth lens is d6, the axial thickness of the fourth lens is d7, and the central radius of curvature of the object side of the fifth lens is R9, the central radius of curvature of the image side of the fifth lens is R10, and satisfies the following relational formula: 0.30≤f1 / f≤0.50; -4.00≤f3 / f≤-1.20; 2.00≤d6 / d7≤8.00; 3.00≤R9 / R10≤10.00. The imaging optical lens provided by the invention not only has good optical performance, but also satisfies the design requirements of long focal length and ultrathinness.

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 photocoupled 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 mainstream in...

AI Technical Summary

Problems solved by technology

However, with the development of technology and the increase of diversified needs of users, the pixel area of ​​the photosensitive device is constantly shrinking, and the requirements of the system for imaging quality are constantly improving. Although the common five-element lens already has better optical performance, but its focal power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure that has good optical performance and cannot meet the design requirements of long focal length and ultra-thin

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