Six-Element Camera Lens Design for Low Distortion
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Solution Overview
Problem
There is a need for camera optical lenses with superior optical performance and reduced optical distortion, particularly for small-sized applications such as smartphone cameras and LIDAR lenses, which require high imaging quality and compactness.
Innovation Solution
A six-element camera optical lens design is proposed, with specific relationships between focal lengths, radii of curvature, and distances between lens elements to achieve optimal performance, including a focal length ratio of −3.00≤f6/f≤−1.00, 0.07≤BF/TTL≤0.20, and 2.00≤R10/R9≤10.00, to minimize distortion and chromatic aberration while ensuring ultra-thinness and wide-angle capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a six-element lens structure is adopted to achieve superior imaging quality, then optical performance is improved, but device complexity increases
Solution Approach 1:
The optical lens is divided into six independent lens elements (first lens L1, second lens L2, third lens L3, fourth lens L4, fifth lens L5, and sixth lens L6), each with specific refractive powers and curvature radii. This segmentation allows each element to contribute differently to correcting optical aberrations, achieving superior imaging quality while managing complexity through modular design
Solution Approach 2:
Each lens element is designed with specific local properties: the first lens has positive refractive force with convex objective side, the third lens has negative refractive force with concave image side, and specific curvature radius ratios (e.g., 2.00≤R10/R9≤10.00 for the fifth lens). These localized quality variations enable precise control over optical performance characteristics
2Reliability
If lens elements are designed with specific curvature radius ratios and focal length relationships to reduce distortion, then optical performance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent establishes specific parameter ranges and relationships to optimize performance while managing manufacturing feasibility. Key parameters include focal length ratios (−3.00≤f6/f≤−1.00), curvature radius ratios (2.00≤R10/R9≤10.00, 0.50≤(R5+R6)/(R5−R6)≤3.10), and spacing ratios (0.30≤d2/d4≤30.00). These parameter specifications balance optical performance with manufacturability by defining acceptable tolerance ranges
3Length of moving object
If the optical total length is reduced to achieve ultra-thinness, then compactness is improved, but optical performance may deteriorate
Solution Approach 1:
The six lens elements are arranged in a compact nested configuration along the optical axis with optimized spacing relationships (0.30≤d2/d4≤30.00, 2.00≤d6/d5≤8.00). This nesting allows the lens assembly to achieve ultra-thin optical total length (TTL≤63.44 mm) while maintaining sufficient space for each element to perform its optical function
Solution Approach 2:
The patent optimizes the axial spacing and curvature radii dimensions to achieve compactness in the length dimension (TTL≤63.44 mm, BF/TTL≤0.20) while maintaining optical performance through precise control of radial curvature parameters (e.g., 0.40≤(R1+R2)/(R1−R2)≤2.00 for the first lens)
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 superior optical performance with reduced distortion and chromatic aberration, suitable for high-pixel cameras and LIDAR applications, while maintaining a compact and cost-effective structure.
Implementation Method 1
a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 arranged from an objective side to an image side
Data Source
AI summary
The present application relates to the field of optical lenses and discloses a camera optical lens, including, in order from the objective side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The following relationship expressions are satisfied: −3.00≤f6/f≤−1.00; 0.07≤BF/TTL≤0.20; 2.00=R10/R9≤10.00; 0.30≤d2/d4≤30.00. The present application has superior optical performance and low optical distortion.