Six-Element Camera Lens for Ultra-Thin Wide-Angle Imaging
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Solution Overview
Problem
There is a need for ultra-thin, wide-angle camera lenses with good optical characteristics and fully corrected chromatic aberration for handheld devices, as existing lenses struggle to achieve high imaging quality due to smaller pixel sizes and increasing demands for thinner and more compact designs.
Innovation Solution
A six-piece camera optical lens structure is designed, comprising lenses made of plastic materials with specific refractive powers and curvature radii, optimized to reduce sensitivity and enhance imaging quality by satisfying certain conditions for focal lengths, curvature ratios, and total optical length, thereby correcting chromatic aberration and maintaining miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the lens structure is reduced to three or four pieces for miniaturization, then the device thickness is reduced, but the imaging quality deteriorates
Solution Approach 1:
The lens system is divided into six independent lens elements with specific refractive powers and curvature radii. Each lens element is optimized individually to contribute to overall aberration correction while maintaining a compact total optical length suitable for thin device designs.
Solution Approach 2:
The patent specifies precise parameter ranges including focal length ratios (0.30<f1/f3<1.50, 0.50<f4/f6<2.00), curvature radius ratios (5.00<R5/R6<20.00), and total optical length constraints (0.85<f1/TTL<2.00). These parameter optimizations enable high imaging quality in a miniaturized six-piece configuration.
2Manufacturing precision
If more lens pieces (five, six, or seven) are used to improve imaging quality, then the chromatic aberration correction is improved, but the device thickness and complexity increase
Solution Approach 1:
The six-piece lens structure provides sufficient segmentation to correct chromatic aberration effectively. The specific arrangement of positive and negative refractive power elements creates multiple opportunities for aberration correction without requiring more than six pieces, thus avoiding excessive thickness.
Solution Approach 2:
Each lens element serves multiple functions: focusing light, correcting spherical aberration, correcting chromatic aberration, and controlling field curvature. This multi-functionality allows six pieces to achieve the optical performance that would require more elements in conventional designs.
3Adaptability or versatility
If the focal lengths and curvature radii are optimized for wide-angle performance, then the field of view is improved, but the optical characteristics and aberration control become more difficult
Solution Approach 1:
The patent establishes specific parameter relationships to achieve wide-angle performance with controlled aberrations: focal length ratios (0.30<f1/f3<1.50, 0.50<f4/f6<2.00), curvature radius ratios (5.00<R5/R6<20.00), and total optical length constraints (0.85<f1/TTL<2.00). These parameter optimizations enable wide-angle performance while maintaining optical quality.
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 six-piece lens structure achieves high-performance imaging with reduced aberration and distortion, supporting the development of ultra-thin and wide-angle lenses with improved optical characteristics and corrected chromatic aberration, suitable for handheld devices.
Implementation Method 1
A six-piece camera optical lens structure is designed, comprising lenses made of plastic materials with specific refractive powers and curvature radii
Data Source
AI summary
The present invention discloses a camera optical lens. The camera optical lens include, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The second lens has a negative refractive power, and the third lens has a positive refractive power. The camera optical lens further satisfies the specific conditions: 1.30f1/f35.00; 8.00R5/R620.00. The camera optical lens can achieve a high performance while obtaining a low TTL.