Optical image capturing system

By designing a reasonable five-piece lens group and spacer element group, the problem that optical imaging system is difficult to reduce fuzzy under the needs of wide angle and miniaturization is solved, and high imaging quality and light transmission are improved.

CN222672036UActive Publication Date: 2025-03-25ZHEJIANG SUNNY OPTICAL CO LTD
0 Cites 0 Cited by

Patent Information

Application Number
CN202421349617.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-13
Publication Date
2025-03-25
Estimated Expiration
2034-06-13

AI Technical Summary

Technical Problem

While ensuring wide-angle and miniaturization requirements, existing optical imaging systems are difficult to effectively reduce the generation of twilight and maintain high imaging quality.

Method used

By designing an optical imaging system including five lens groups and spacer element groups, the lens group consists of a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The diopter and spacer elements of the lens are reasonably designed to meet a specific range of radius of curvature and air gap ratios.

Benefits of technology

While ensuring the wide-angle and miniaturization of the lens, it can effectively reduce the generation of twilight, improve the light transmission and illumination of the lens, thereby improving the lens performance and imaging quality.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model discloses an optical imaging system which comprises a lens barrel, a lens group and a spacing element group, the lens group and the spacing element group are accommodated in the lens barrel, and the lens group comprises first to fifth lenses which are sequentially arranged from an object side to an image side along an optical axis; object side surfaces of the first lens, the second lens and the fourth lens are convex surfaces, image side surfaces of the first lens, the second lens and the fourth lens are concave surfaces, and object side surfaces and image sides of the third lens and the fifth lens are convex surfaces; and an air gap is formed between any two adjacent lenses. The spacing element group comprises a first spacing element which is positioned between the first lens and the second lens and is in contact with the first lens, and a second spacing element which is positioned between the second lens and the third lens and is in contact with the second lens; the third spacing element is positioned between the third lens and the fourth lens and is in contact with the third lens; the fourth spacing element is positioned between the fourth lens and the fifth lens and is in contact with the fourth lens; among the first to fourth spacing elements, the outer diameter of the first spacing element is the largest. The inner diameter d1s of the object side surface of the first spacing element and the curvature radius R2 of the image side surface of the first lens satisfy 3.80 lt; d1s / R2lt; and 4.70.
Need to check novelty before this filing date? Find Prior Art