Image pickup optical lens

Abstract

The invention, which relates to the field of optical lenses, discloses an image pickup optical lens, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens from an object side to an image side. The focal length of the pickup optical lens is f; the focal length of the first lens is f1; the focal length ofthe second lens is f2; the curvature radius of the object side surface of the fifth lens is R9, the curvature radius of the image side surface of the fifth lens is R10, the on-axis thickness of the fourth lens is d7, the on-axis distance from the image side surface of the fourth lens to the object side surface of the fifth lens is d8; and the following relational expressions are satisfied: f1 / f islarger than or equal to 0.94 and is less than or equal to 1.70, (R9 + R10) / (R9-R10) is larger than or equal to 2.00 and is less than or equal to 12.00, and d7 / d8 is larger than or equal to 5.00 and is less than or equal to 14.00. The image pickup 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 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 eight-piece lens structure gradually appears in the lens design. Common Although the eight-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 requirements of large aperture, large aperture, and lens shape while having good optical performance. Wide-angle, ultra-thin design requirements

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