Optical lens, camera module and electronic equipment

Abstract

The invention discloses an optical lens, a camera module and electronic equipment. The optical lens comprises a first lens, a second lens and a third lens which are sequentially arranged from an object side to an image side along an optical axis; the first lens has positive refractive power, the image side surface of the first lens comprises an emergent region near the optical axis and a first reflecting region far away from the optical axis, the object side surface of the first lens comprises an incident region far away from the optical axis and a second reflecting region near the optical axis, and the second lens has negative refractive power; the third lens has negative refractive power, the object-side surface and the image-side surface of the third lens are respectively a convex surface and a concave surface at a paraxial region, and the optical lens satisfies the following relational expressions: 5lt; l < 1 > R < 4 > / L < 1 > R < 3 > lt; 25, L1R4 is the curvature radius of the emergent region at the optical axis, and L1R3 is the curvature radius of the second reflecting region at the optical axis. By adopting the technical scheme, the resolution and the imaging definition of the optical lens can be improved while the miniaturization design of the optical lens is realized, and clear imaging is realized.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to an optical lens, a camera module and an electronic device. Background technique [0002] At present, with the wide application of electronic devices such as mobile phones, tablet computers, drones, and computers in life, people have higher and higher requirements for the imaging quality of optical lenses, which not only require optical lenses to be thinner and smaller, but also require achieve higher image quality. In order to meet the miniaturization design of the optical lens, a prism is usually added to set the optical lens as a periscope lens, but the prism will cause ghost images and stray light to the imaging of the optical lens, reducing the clarity and quality of the picture. That is, under the design trend of light, thin and miniaturized optical lenses, it is difficult for optical lenses to image clearly, with poor image quality and low resolution, and it is dif...

AI Technical Summary

Problems solved by technology

In order to meet the miniaturization design of the optical lens, a prism is usually added to set the optical lens as a periscope lens, but the prism will cause ghosting and stray light to the imaging of the optical lens, reducing the clarity and quality of the picture

That is to say, under the design trend of thin, light and miniaturized optical lenses, it is difficult for optical lenses to image clearly, with poor image quality and low resolution, and it is difficult to meet people's high-definition imaging requirements for optical lenses.

Images