Camera Optical Lens

Abstract

The invention discloses a photographing optical lens, which is composed of five lenses, the focal length of the first lens is f1, the focal length of the second lens is f2, the thickness on the axis of the first lens is d1, and the image side of the first lens reaches the second lens. The on-axis distance from the object side of the second lens is d2, the on-axis distance from the image side of the third lens to the object side of the fourth lens is d6, the on-axis distance from the image side of the fourth lens to the object side of the fifth lens is d8, and the second lens The radius of curvature on the side of the object is R3, and the radius of curvature on the image side of the second lens is R4, and satisfy the following relationship: -0.17≤f1 / f2≤-0.12; 1.80≤d1 / d2≤2.20; 0.15≤d6 / d8≤0.20 ; 8.00≤(R3+R4) / (R3‑R4)≤10.00. The imaging optical lens provided by the invention has good optical performance and at the same time satisfies the design requirements of large aperture, wide angle 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 mainstrea...

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. Long focal length, ultra-thin design requirements

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