Optical lens group, camera module and terminal

Abstract

The invention discloses an optical lens group, a camera module and a terminal. The optical lens group comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens anda seventh lens which are sequentially arranged from an object plane to an image plane along an optical axis, wherein the first lens has positive refractive power, the object side surface, near the optical axis, of the first lens is a convex surface, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens respectively have refractive power, the maximumeffective diameter of the image side surface of the seventh lens is Y7[2], the distance between the object side surface of the first lens and the imaging surface of the system at the optical axis isTTL, the thickness of the optical effective diameter edge of the object side surface of the seventh lens is ET[7], the focal length of the optical lens group is f, and Y7[2], TTL, ET[7] and f satisfythe following conditional expression: (Y7[2]*TTL) / (ET[7]*f) is more than or equal to 3 and less than or equal to 8. Through the arrangement, the long-focus characteristic of the optical lens group andthe overall thickness of the optical camera lens can be balanced, and the maximum diameter of the optical camera lens is reduced while the molding yield of the seventh lens is ensured.

Description

technical field [0001] The present application relates to the technical field of optical imaging, and in particular to an optical lens group, a camera module and a terminal. Background technique [0002] At present, in order to meet the needs of shooting distant scenes and shallow depth of field to highlight the main imaging objects and to match the chips with high pixels and small size, the industry has begun to focus on the research and development of lens styles with long focal lengths. Traditional cameras mounted on electronic devices use a multi-chip lens structure. Based on the same chip, in order to obtain higher image clarity, the total length of the lens will be thickened, affecting the amount of light entering the lens, making the entire lens very thick. Thereby restricting the thinning of the lens and increasing the difficulty of assembling the lens. Contents of the invention [0003] Embodiments of the present application provide an optical lens group, a camer...

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present application provides an optical lens group, a camera module and a terminal, which can solve the problem that the lens is too thick, and can reduce the total length of the lens while ensuring higher image clarity, making the lens lighter and thinner

Images