Camera Optical Lens

Abstract

The present invention provides a kind of photographing optical lens, it comprises from object side to image side in sequence: first lens, second lens, third lens, fourth lens, fifth lens; The focal length of photographing optical lens is f, the first lens The focal length of one lens is f1, the focal length of the third lens is f3, the focal length of the fourth lens is f4, the focal length of the fifth lens is f5, the radius of curvature of the object side of the fourth lens is R7, and the curvature of the image side of the fourth lens The radius is R8, the on-axis thickness of the first lens is d1, the on-axis distance from the image side of the first lens to the object side of the second lens is d2, the on-axis thickness of the second lens is d3, and the image side of the third lens is to the fourth lens The on-axis distance d4 on the side of the object satisfies the following relationship: ‑8.50≤(f1+f3+f5) / f≤‑6.50; 0.00≤(R7+R8) / (R7‑R8)≤1.00; 1.20≤d2 / d1 ≤2.00; 0.80≤f4 / f≤1.50; 3.20≤d3 / d4≤5.00. 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 photosensitive coupling devices (Charge Coupled Deνice, CCD) or complementary metal oxide semiconductor devices (Complementary Metal -OxideSemiconductor 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, they have good Miniaturized camera lenses with image quality have become th...

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. Ultra-thin, wide-angle design requirements

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