Optical imaging system, image capturing module and electronic device

Abstract

The invention provides an optical imaging system, an image capturing module and an electronic device. The optical imaging system comprises: a first lens element with positive refractive power, the object-side surface of the first lens element being convex in a paraxial region thereof, and the image-side surface of the first lens element being concave in a paraxial region thereof; a second lens element with negative refractive power, the object-side surface of the second lens element being convex in a paraxial region and the image-side surface of the second lens element being concave in a paraxial region; a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element which have refractive power; and a seventh lens element with negative refractive power, the image-side surface of the seventh lens element being concave in a paraxial region thereof. The optical imaging system satisfies the following relational expression: (L71p1-L71p2)-(L62p1-L62p2) < 0.9mm. According to the optical imaging system, a large-aperture and large-image-plane shooting function can be achieved, it can be guaranteed that the optical imaging system has low sensitivity, and high imaging quality is achieved under the condition that miniaturization is achieved.

Description

technical field [0001] The invention relates to optical imaging technology, in particular to an optical imaging system, an imaging module and an electronic device. Background technique [0002] Today, with the rapid development of technology, consumers have higher and higher requirements for the image quality of mobile electronic products. At present, the five-chip imaging module is widely used in the market, but its resolution is increasingly unable to meet the needs of consumers. Compared with the five-chip imaging module, the seven-chip imaging module can obtain higher resolution, and can be used in mobile electronic products, thereby improving the image quality, resolution and clarity of shooting. In addition, the performance of photosensitive elements such as photocoupler (CCD) and complementary metal oxide semiconductor (CMOS) also has certain advantages. It has greatly improved, made it possible to shoot high-quality picture quality, and brought people a higher-quali...

AI Technical Summary

Problems solved by technology

At present, the five-chip imaging module is widely used in the market, but its resolution is increasingly unable to meet the needs of consumers. Compared with the five-chip imaging module, the seven-chip imaging module can obtain higher resolution, and can be used in mobile electronic products, thereby improving the image quality, resolution and clarity of shooting. In addition, the performance of photosensitive elements such as photocoupler (CCD) and complementary metal oxide semiconductor (CMOS) also has certain advantages. It has greatly improved, provided the possibility to shoot high-quality picture quality, and brought people a higher-quality shooting experience

[0003] In the process of implementing this application, the inventor found that there are at least the following problems in the prior art: due to the small volume of mobile electronic products, the volume of the imaging module will also increase with the increase in the number of lenses. It is difficult for the slice imaging module to achieve high imaging quality while achieving miniaturization

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