Six-element Optical Imaging Lens for Vehicle Miniaturization
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Solution Overview
Problem
The challenge lies in designing an optical imaging lens for vehicles that balances miniaturization with desirable imaging quality, field of view, and large aperture, while maintaining manufacturing and assembly yield rates, which existing technologies have not adequately addressed.
Innovation Solution
The optical imaging lens is composed of multiple lens elements with specific refracting powers and surface shapes, including a second lens element with negative refracting power and no air gap between the fourth and fifth lens elements, arranged to satisfy conditions such as (G12+T2+G23+T3+G34)/T1≤3.000, optimizing optical parameters and imaging quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the lens size is scaled down to achieve miniaturization, then the system length is reduced, but the imaging quality deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the refracting powers of individual lens elements and the ratio (G12+T2+G23+T3+G34)/T1≤3.000 to maintain imaging quality while reducing system length. This involves optimizing optical parameters such as focal lengths, curvature radii, and thicknesses of lens elements to achieve compact design without sacrificing image quality
Solution Approach 2:
The patent divides the optical system into six distinct lens elements with specific refracting powers (first order, second order with negative power, third order, etc.). This segmentation allows each element to contribute specifically to aberration correction and focal control, enabling miniaturization while maintaining overall imaging performance through coordinated design of individual components
2Manufacturing precision
If the number of lens elements is increased to improve imaging quality, then the imaging quality is enhanced, but the device complexity increases
Solution Approach 1:
The patent optimizes the optical parameters of six lens elements by controlling specific ratios and relationships between their refracting powers and physical dimensions. This parameter optimization enables effective aberration correction with a moderate number of elements, balancing imaging quality enhancement with manageable device complexity
Solution Approach 2:
The patent combines multiple optical functions into a coordinated six-element system where each element serves specific purposes (positive and negative refracting powers distributed across elements). This merging of functions into a unified design achieves superior imaging quality while avoiding the complexity of larger, less integrated systems
3Illumination intensity
If the aperture is enlarged to improve light gathering ability, then the light gathering ability is enhanced, but the lens size increases
Solution Approach 1:
The patent controls the ratio (G12+T2+G23+T3+G34)/T1≤3.000 and optimizes the distribution of refracting powers across lens elements to achieve compact dimensions while maintaining large aperture capabilities. This parameter optimization allows the system to gather sufficient light without proportionally increasing overall lens size
Solution Approach 2:
The patent utilizes aspheric surfaces on lens elements to efficiently gather and focus light from large apertures while maintaining compact form factor. The curved surfaces optimize light path control, enabling enhanced light gathering ability without linearly increasing lens dimensions
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
This configuration enhances the optical imaging lens's ability to reduce aberrations and maintain desirable imaging quality, even with reduced system length, improving manufacturing yield and imaging performance compared to prior art.
Implementation Method 1
Each of the first lens element through the sixth lens element has an object-side surface facing toward the object side and allowing imaging rays to pass through as well as an image-side surface facing toward the image side and allowing the imaging rays to pass through
Data Source
AI summary
An optical imaging lens including a first, a second, a third, a fourth, a fifth, and a sixth lens elements arranged in sequence from an object side to an image side. Each of the lens elements includes an object-side surface and an image-side surface. The first to sixth lens elements have refracting power. The second lens element has a negative refracting power. An optical axis region of the image-side surface of the third lens element is concave. There is no air gap between the fourth lens element and the fifth lens element. A ratio between a distance on an optical axis from the image-side surface of the first lens element to the object-side surface of the fourth lens element and a thickness of the first lens element along the optical axis is less than or equal to 3.000.