Medium and long focal length optical lens, camera module and terminal equipment

By combining metasurface lenses and aspherical lenses, the challenge of increasing focal length in the thinner and lighter design of medium-telephoto optical lenses has been solved, resulting in ultra-thin, miniaturized, and high-image-quality medium-telephoto optical lenses suitable for smartphones and other terminal devices.

CN121956302APending Publication Date: 2026-05-01HANGZHOU NAJING TECHNOLOGY CO LTD +1
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Patent Information

Application Number
CN202610168321.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-05
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

In smartphones and other terminal devices, the physical size of medium and long telephoto lenses is compressed, making it difficult to increase the focal length and balance optical performance with a thin and light design.

Method used

By employing a hybrid design of metasurface lenses and aspherical lenses, the planar structure and phase control capabilities of metasurface lenses are combined with the optical power and chromatic aberration correction characteristics of traditional lenses to optimize the overall length and image quality of the lens, achieving ultra-thinness, miniaturization, and high image quality.

Benefits of technology

While ensuring medium-to-long telephoto imaging capabilities, the axial and lateral dimensions of the lens are significantly reduced, achieving effective compression of the overall optical length, improving image quality and chromatic aberration correction capabilities, and making it suitable for thin mobile devices.

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Abstract

The invention discloses a medium-long-focus optical lens, a camera module and terminal equipment. The medium-long-focus optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are arranged from an object plane to an image plane along an optical axis; at least one of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens is a metasurface lens, and the other lenses are aspheric lenses. According to the invention, at least one metasurface lens is introduced, and the plane structure and the phase regulation and control capability of the metasurface lens are utilized, so that the required focal power is realized, and meanwhile, the axial size and the transverse size of the lens are remarkably reduced, and therefore, the light and thin and miniaturized design requirements are met; meanwhile, by controlling the proportional relation between the TTL and the size and focal length of an image circle, it is ensured that the lens still has a compact structure and good imaging performance under the long-focus condition.
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