Optical Imaging Lens Assembly for Low-Distortion Thermal Stability
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Solution Overview
Problem
Existing optical imaging lenses face challenges in achieving high image quality while meeting constraints of small size and low cost, particularly in applications like portable electronic devices, drones, and automotive lenses that require temperature stability.
Innovation Solution
An optical imaging lens design comprising a first lens assembly with negative and positive refractive powers, and a second lens assembly with specific refractive power configurations, including aspheric surfaces and compound lenses, to enhance image quality and reduce chromatic aberration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of lenses is increased to improve image quality, then imaging performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The lens assembly is divided into two distinct lens assemblies (first lens assembly with negative refractive power and second lens assembly with positive refractive power), allowing each segment to be optimized independently for specific functions while maintaining overall system performance
Solution Approach 2:
Multiple lens elements with different refractive powers are combined in a specific sequence within each lens assembly, merging their optical effects to achieve both high image quality and controlled system complexity
2Manufacturing precision
If the number of lenses is increased to reduce distortion, then imaging performance is improved, but manufacturing cost increases
Solution Approach 1:
Different regions of the optical system are assigned different lens elements with specific refractive powers tailored to local optical requirements, with the first lens assembly addressing distortion in one region and the second lens assembly addressing it in another region
Solution Approach 2:
The patent employs lens elements with specifically designed refractive power parameters and curvature ratios, changing these optical parameters systematically across the two lens assemblies to minimize distortion while controlling manufacturing complexity
3Manufacturing precision
If lens elements are added to improve temperature stability, then imaging performance is improved, but device complexity increases
Solution Approach 1:
The first lens assembly with negative refractive power and the second lens assembly with positive refractive power are configured to counterbalance each other's thermal effects, where one assembly compensates for temperature-induced optical changes in the other, achieving temperature stability without excessive complexity
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 high image quality with low distortion and improved chromatic aberration, ensuring effective performance across varying temperatures and environments.
Implementation Method 1
a first lens having negative refractive power, a second lens having negative refractive power, and a third lens having positive refractive power
Data Source
AI summary
An optical imaging lens, in order from an object side to an image side along an optical axis, includes a first lens assembly, an aperture, and a second lens assembly. The first lens assembly consists of, in order from the object side to the image side along the optical axis, a first lens having negative refractive power, a second lens having negative refractive power, and a third lens having positive refractive power. The second lens assembly consists of, in order from the object side to the image side along the optical axis, a fourth lens having positive refractive power, a fifth lens having positive refractive power, a sixth lens having negative refractive power, and a seventh lens having positive refractive power.