Four-Lens Camera Optical Lens Design for Ultra-Thin Wide-Angle Performance
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Solution Overview
Problem
Conventional camera optical lenses with a four-piece lens structure face challenges in achieving optimal optical performance for ultra-thin, wide-angle lenses with large apertures, due to deficiencies in refractive power, lens spacing, and lens shape, which affect imaging quality.
Innovation Solution
A camera optical lens design comprising four lenses with specific curvature radius and focal length ratios, and on-axis thickness conditions, optimized to correct spherical aberrations, reduce lens sensitivity, and facilitate ultra-thin, wide-angle performance with a large aperture, suitable for high-pixel camera elements like CCD and CMOS sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a four-piece lens structure is adopted to improve imaging quality, then optical performance is improved, but the lens cannot achieve ultra-thin, wide-angle performance with large apertures
Solution Approach 1:
The patent applies parameter changes by establishing specific mathematical relationships between curvature radii (R1/R2, R3/R4, R5/R6) and thickness ratios (d1/d2, d3/d4, d5/d6), and focal length ratios (f1/f2, f2/f3, f3/f4). These controlled parameter variations enable the four-piece lens to achieve both high imaging quality and ultra-thin wide-angle performance with large apertures, resolving the contradiction between optical performance and structural adaptability.
2Device complexity
If conventional four-piece lens settings are used, then lens structure is simple, but refractive power, lens spacing and lens shape have deficiencies affecting optical performance
Solution Approach 1:
The patent maintains the simple four-piece lens structure while significantly improving optical performance through precise parameter control. By defining specific ranges for curvature radius ratios, thickness ratios, and focal length ratios, the patent optimizes refractive power distribution, lens spacing, and lens shape without increasing structural complexity. This resolves the contradiction between device simplicity and optical precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves excellent optical characteristics, ensuring high imaging performance, ultra-thinness, and a wide field of view, making it suitable for mobile phone and webcam applications.
Implementation Method 1
The camera optical lens includes, from an object side to an image side, a first lens, a second lens, a third lens, and a fourth lens
Data Source
AI summary
Provided is a camera optical lens, which includes first to fourth lenses. The camera optical lens satisfies: 0.03≤R1/R2≤0.10; 1.00≤R3/R4≤1.50; 3.50≤R5/R6≤5.50; and 3.50≤d1/d2≤5.50, where R1 and R2 denote curvature radiuses of an object side surface and an image side surface of the first lens, respectively; R3 and R4 denote curvature radiuses of an object side surface and an image side surface of the second lens, respectively; R5 and R6 denote curvature radiuses of an object side surface and an image side surface of the third lens, respectively; d1 denotes an on-axis thickness of the first lens; and d2 denotes an on-axis distance from the image side surface of the first lens to the object side surface of the second lens. The camera optical lens has good optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.