Camera Optical Lens

Abstract

The invention provides a camera optical lens. The camera optical lens comprises five lenses in total. The five lenses are sequentially arranged from the object side to the image side: a first lens with a positive refractive power, a second lens with a positive refractive power, and a lens with a positive refractive power. The third lens with positive refractive power, the fourth lens with negative refractive power and the fifth lens with negative refractive power; the focal length of the camera optical lens is f, the focal length of the first lens is f1, and the axial thickness of the second lens is d3 , the axial thickness of the third lens is d5, the central radius of curvature of the object side of the fourth lens is R7, and the central radius of curvature of the image side of the fourth lens is R8, and the following relationship is satisfied: 1.20≤f1 / f≤4.00 ; 1.80≤d5 / d3≤3.50; 1.50≤(R7+R8) / (R7‑R8). The camera optical lens not only has good optical performance, but also meets the design requirements of large aperture, wide angle and ultra-thin.

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, as the pixel area of ​​the photosensitive device continues to shrink, and the system’s requirements for imaging quality continue to increase, the five-element lens structure gradually appears in the lens design. Common Although the five-element lens already has good optical performance, its focal power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure that cannot meet the needs of large aperture, large aperture, and lens shape while having good optical performance. Wide-angle, ultra-thin design requirements

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