Seven-Lens Optical Assembly for Thermal-Stable Low-Light Imaging
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Solution Overview
Problem
Optical lenses used in vehicle systems face challenges with high resolution, miniaturization, inability to maintain clear imaging with large temperature differences, and poor imaging quality in low light environments, particularly affecting autonomous driving assistance systems.
Innovation Solution
An optical lens assembly comprising multiple lenses with specific refractive powers and surface configurations, including cemented lenses, is designed to optimize imaging quality, miniaturization, and thermal stability, with features such as convex and concave surfaces, aspherical shapes, and diaphragm placement to correct aberrations and maintain clarity across varying temperatures and lighting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the optical lens assembly is miniaturized, then the device size is reduced, but the resolution and imaging quality deteriorate
Solution Approach 1:
The optical lens assembly is divided into seven individual lenses with different refractive powers and surface configurations. Each lens is optimized for specific functions such as light collection, aberration correction, or focal length adjustment. This segmentation allows the system to achieve high resolution and clear imaging while maintaining a compact overall structure, as each lens contributes efficiently to the total optical performance without requiring excessive size.
2Measurement precision
If the optical lens assembly is designed for high resolution, then the imaging quality is improved, but the device size increases
Solution Approach 1:
The patent employs lenses with specific refractive power parameters and surface curvature parameters to optimize the optical system. By carefully selecting and adjusting these parameters across the seven lenses, the system achieves high resolution and clear imaging while maintaining a compact size. The varying refractive powers and surface configurations allow efficient light manipulation within a small volume.
3Adaptability or versatility
If the optical lens assembly is used in large temperature variation environments, then the adaptability is improved, but the optical BFL offsets causing image surface offset and imaging blur
Solution Approach 1:
Different lenses in the assembly have different refractive powers and surface configurations tailored to their specific optical functions. The first lens has negative refractive power with convex-concave surfaces for light collection, while subsequent lenses have varying positive or negative powers for correction and focusing. This local optimization of each lens's properties allows the overall system to maintain stable optical BFL across temperature variations while adapting to different environmental conditions.
4Manufacturing precision
If the optical lens assembly is designed with specific surface configurations, then the aberration correction is improved, but the device complexity increases
Solution Approach 1:
The complex aberration correction task is segmented across seven individual lenses, each with specific surface configurations. Rather than requiring a single complex lens, the system divides the correction functions among multiple simpler lenses with different refractive powers and surface shapes. This segmentation reduces the complexity of individual lens manufacturing while achieving overall high aberration correction performance.
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 lens assembly achieves high resolution, miniaturization, and clear imaging under large temperature variations and low light conditions, enhancing the performance of vehicle optical systems for autonomous driving.
Implementation Method 1
a first lens having a negative refractive power, where a first side surface of the first lens is a convex surface, and a second side surface of the first lens is a concave surface
Data Source
AI summary
The disclosure provides an optical lens assembly and an electronic device. The optical lens assembly comprises: a first lens having a negative refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; a fifth lens having a refractive power; a sixth lens having a refractive power; and a seventh lens having a refractive power; a distance d11 from a second side surface of the sixth lens to a first side surface of the seventh lens on the optical axis and a total optical length TTL of the optical lens assembly meet: d11/TTL≥0.03. The disclosure solves at least one problem among high resolution, miniaturization, inability of clear imaging during large temperature differences, or poor imaging quality in low light environments in optical lens assembly in the related art.