Imaging lens group and camera module

By designing five lens groups with bending force, the sensitivity problem of small photography lenses during manufacturing and assembly is solved, and a large perspective, high resolution ability and low distortion are achieved, the imaging quality and product yield are improved, and it is suitable for Extreme temperature environment.

CN119310710APending Publication Date: 2025-01-14NEWMAX TECH CO LTD
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Patent Information

Application Number
CN202311082430.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-07-12
Filing Date
2023-08-25
Publication Date
2025-01-14

AI Technical Summary

Technical Problem

Small photography lenses have sensitivity problems during manufacturing and assembly, resulting in reduced imaging quality and increased costs, and it is difficult to take into account both miniaturization and high resolution capabilities.

Method used

An imaging lens group consisting of five lenses with bending forces is designed to meet specific conditions to achieve large viewing angles, high resolution capabilities, low distortion deformation and low manufacturing assembly tolerances through specific bending forces, radius of curvature and lens shape configurations. Sensitivity and suitable for extreme temperature environments.

Benefits of technology

The goal of miniaturizing modules is achieved, while improving imaging quality and product yield, reducing manufacturing costs, and correcting aberrations and improving the overall performance of the imaging lens group through appropriate radius of curvature and lens shape.

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Abstract

The invention relates to an imaging lens group, which sequentially comprises a first lens element with positive refractive power, a second lens element with negative refractive power and a third lens element from an object side to an image side, a second lens element with negative refractive power; a third lens element with negative refractive power; a fourth lens element with positive refractive power; and a fifth lens element with negative refractive power, wherein the total number of the lenses with refractive power in the imaging lens group is five, the distance from the image side surface of the fifth lens to the imaging surface on the optical axis is BFL, the thickness of the second lens on the optical axis is CT2, the thickness of the third lens on the optical axis is CT3, the incident angle of the main light of the imaging lens group at 80% of the maximum imaging surface is CRA8, and the incident angle of the main light of the imaging lens group at 80% of the maximum imaging surface is CRA8. And the following condition is satisfied: CRA8 * BFL / (CT2 + CT3) is more than 51.97 degrees and less than 97.45 degrees.
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