Wide-Angle Lens Assembly Aberration Control
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Solution Overview
Problem
Wide-angle lens systems face challenges in miniaturization and maintaining performance due to aberration control and sensitivity to temperature changes, which complicates their integration into portable electronic devices.
Innovation Solution
The design of an optical lens assembly comprising a first lens group with positive refractive power, an iris diaphragm, and a second lens group with positive refractive power, arranged from the object side to the image side, including specific lens configurations and aspherical lenses to achieve a focal length ratio that minimizes aberrations and temperature-induced performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the lens system is miniaturized, then the device size is reduced, but aberration control becomes difficult
Solution Approach 1:
The lens system is divided into multiple lens groups (first lens group with positive refractive power, second lens group with negative refractive power, third lens group with positive refractive power) separated by air gaps. This segmentation allows each group to be optimized for specific aberration correction while maintaining compact overall size. The specific arrangement of three lens groups enables effective control of spherical aberration, coma, and distortion in a miniaturized configuration.
Solution Approach 2:
Different regions of the lens system have different refractive powers and aberration correction functions. The first lens group provides positive refractive power with specific aberration correction, the second lens group provides negative refractive power to counteract other aberrations, and the third lens group provides additional positive refractive power. This local differentiation of optical properties enables comprehensive aberration control in a compact design.
2Area of moving object
If wide-angle lens systems are designed, then the field of view is increased, but sensitivity to temperature changes increases
Solution Approach 1:
The lens groups are designed with specific refractive index characteristics and dispersive properties to compensate for temperature-induced focal length changes. The combination of positive and negative lens groups with different thermal expansion coefficients and refractive index temperature coefficients creates a thermal balance that reduces overall temperature sensitivity. This parameter optimization allows the wide-angle lens to maintain focus accuracy across temperature variations.
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 solution enables the creation of compact wide-angle optical lens assemblies that maintain excellent optical performance and reduce image plane movement caused by temperature changes, suitable for use in portable electronic devices.
Implementation Method 1
an optical lens assembly includes a first lens group having positive refractive power, an iris diaphragm, and a second lens group having positive refractive power
Data Source
AI summary
Provided are an optical lens assembly and an electronic apparatus including the same. The optical lens assembly implements a wide-angle lens system by including a first lens group having positive refractive power, an iris diaphragm, and a second lens group having positive refractive power, where the first lens group, the iris diaphragm, and the second lens group are arranged from an object side to an image side, and the first lens group includes at least one negative lens and two positive lenses.