Optical lens
By designing a seven-element ultra-wide-angle optical lens and adjusting the thickness of the lens group and the size ratio of the spacer components, the assembly stability problem caused by the excessive thickness of the lens was solved, and the stability of the lens and the imaging quality were improved.
CN120630449AActive Publication Date: 2025-09-12ZHEJIANG SUNNY OPTICAL CO LTD
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Patent Information
- Application Number
- CN202511121899.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-12
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2045-08-12
AI Technical Summary
Technical Problem
In the process of pursuing high pixels, wide angles and miniaturization, existing optical lenses are too thick, resulting in poor assembly stability and affecting the structural reliability of the lens.
Method used
A seven-element ultra-wide-angle optical lens is designed. By adjusting the thickness of the lens group and the size ratio of the spacer components, especially the ratio of the spacer elements between the second lens and the fifth lens, the stress distribution and deformation of the lens are controlled to ensure the stability of the lens during the assembly process.
Benefits of technology
It improves the assembly stability of the lens, avoids lens deformation and breakage, and improves the overall structural reliability and imaging quality of the lens.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides an optical lens. The optical lens comprises a lens barrel, and a lens group and a spacing assembly which are accommodated in the lens barrel; the lens group comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with positive focal power, a sixth lens with negative focal power and a seventh lens with negative focal power which are sequentially arranged from the object side to the image side along the optical axis; the center thickness of the second lens is larger than the center thickness of other lenses in the lens group, and the maximum thickness of a non-light-transmitting area of the second lens is larger than the maximum thickness of non-light-transmitting areas of other lenses. The spacing assembly comprises a second spacing element, a third spacing element, a fourth spacing element and a fifth spacing element; the optical lens satisfies the following conditions: 1.60 < L / (f * tan (Semi-FOV)) < 1.95; (CT2 + CT4) / CT3 is more than 5.55 and less than 7.50; 5.90 < = D5s / d2slt; 7.00 and 6.70 < EP02 / EP23 < 8.65.
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