Optical lens and electronic device
By optimizing lens parameter design, an optical lens with a large aperture and shallow depth of field was achieved, solving the problem of low brightness in low-light shooting and improving the imaging effect.
CN113376805BActive Publication Date: 2026-06-05SHANGHAI MORUAN COMM TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI MORUAN COMM TECH
- Filing Date
- 2021-06-16
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
Most existing three-element macro 2M lenses are designed with an aperture of f/2.4, which results in low light intake, low image brightness, and shallow depth of field when shooting in low light, making it difficult to meet the requirements for high image quality.
Method used
Design an optical lens that, by adjusting parameters such as lens distance, focal length, radius of curvature, and thickness, satisfies a specific relationship to achieve a large aperture, shallow depth of field, and enhanced background blur effect.
Benefits of technology
Increase the brightness of images shot in low light, highlight the subject, enhance the background blur effect, and improve image quality.
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Smart Images
Figure CN113376805B_ABST
Abstract
The application relates to the field of optical lenses, and discloses an optical lens, which comprises a first lens, a second lens and a third lens in sequence from the object side to the image side; wherein the on-axis distance between the object side of the first lens and the image side of the third lens is D13, the focal length of the third lens is f3, the F number of the optical lens is FNO, and the following relationship is met: -2.500 < D13 / f3 < -2.000; FNO = 2.200. The optical lens has the advantages of a large aperture and a shallow depth of field, thereby increasing the brightness of a dark scene shooting picture, and meanwhile, the background blur can be enhanced and the imaging subject can be highlighted during shooting. The application further discloses an electronic device applying the optical lens.
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