Glass-Plastic Hybrid Imaging Lens for Thermal Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices require higher quality imaging lenses that maintain high imaging quality and stability across varying temperatures and large fields of view, while existing lenses often suffer from aberrations and reduced resolution at temperature changes.
Innovation Solution
The imaging lens design incorporates a combination of glass and plastic lenses, with specific surface curvatures and aspherical surfaces, along with a filter to correct aberrations and maintain high transmittance, ensuring stability and high-resolution imaging even at high temperatures and large fields of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional imaging lens design is used, then the device complexity is low, but the imaging quality and resolution deteriorate at temperature changes and large fields of view
Solution Approach 1:
The imaging lens is divided into multiple lens elements (first through sixth lenses) with different materials and optical powers. Each lens element is optimized for specific aberration correction, allowing the system to maintain high imaging quality across temperature variations and large fields of view while managing complexity through functional segmentation.
Solution Approach 2:
The lens system combines glass and plastic lens elements with different thermal and optical properties. This composite material approach allows compensation for thermal expansion and refractive index changes at different temperatures, maintaining imaging quality without requiring overly complex active control mechanisms.
2Adaptability or versatility
If the field of view is increased, then the adaptability improves, but the aberrations and resolution deteriorate
Solution Approach 1:
Different lens elements are designed with specific local optical properties to correct aberrations in different regions of the field of view. The aspherical surfaces and varying curvatures are optimized to maintain resolution and reduce distortion specifically at the periphery while preserving central field quality, enabling a 97-degree field of view without sacrificing overall resolution.
3Adaptability or versatility
If the temperature increases, then the adaptability to environmental conditions improves, but the imaging quality and stability deteriorate
Solution Approach 1:
The lens system is designed to accommodate changes in refractive index and physical dimensions caused by temperature variations. By selecting materials with complementary thermal properties and optimizing the optical path, the system maintains stable imaging performance across a wide temperature range without requiring active temperature control or complex compensation mechanisms.
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 achieves high relative illumination, uniform brightness, and improved resolution across the field of view, maintaining imaging quality and stability under temperature variations, with corrected aberrations and a large field of view.
Implementation Method 1
a filter 70, and an imaging surface 80. Light may pass through the first lens 10, the second lens 20, the third lens 30, the fourth lens 40, the fifth lens 50, and the sixth lens 60, in sequence, to form an image on the imaging surface 80
Data Source
AI summary
A high-resolution imaging lens proofed against high-temperature instability includes a first lens with a negative power, a second lens with a negative power, a third lens with a positive power, a fourth lens with a negative power, a fifth lens with a positive power, and a sixth lens with a positive power. The first to the sixth lenses satisfy conditions of F1<0; 0.8>|F2/F6|>0.6, F2<0, F6>0; −3>F4/F5>−2, and 2.0<F/#. Each of the first lens, the third lens, the fourth lens, and the fifth lens is made of glass, each of the second lens and the sixth lens is made of plastic.