Six-Element Image Lens Assembly for Wide Field and Aberration Control
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Solution Overview
Problem
Conventional optical lens assemblies struggle to balance image quality, sensitivity, aperture size, and field of view, making it difficult to meet the demands of modern electronics with enhanced image sensors.
Innovation Solution
An image lens assembly comprising six lens elements with specific refractive powers and surface configurations, including aspheric surfaces and inflection points, is designed to optimize field of view, image quality, and volume distribution, with optional glass or plastic materials and additives for aberration correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional optical lens assemblies are used, then image quality and sensitivity can be maintained, but the field of view is limited and the design is difficult to balance
Solution Approach 1:
The lens assembly is divided into six distinct lens elements with specific refractive powers arranged in sequence from object side to image side. Each lens element is designed with specific surface characteristics (convex/concave combinations) to control light paths and correct aberrations, enabling wide field of view while maintaining manageable structural complexity through systematic segmentation.
Solution Approach 2:
Different regions of the lens assembly have specialized local properties - the first lens element has negative refractive power with convex object-side and concave image-side surfaces for wide angle coverage, while subsequent elements have varying refractive powers and surface shapes tailored to correct specific aberrations at their locations, optimizing overall performance.
2Reliability
If aperture size is increased to improve sensitivity, then light gathering capability improves, but aberrations increase and image quality deteriorates
Solution Approach 1:
The lens design optimizes parameters including refractive powers of individual elements, axial distances between elements, and surface curvatures (including aspheric coefficients) to control aberrations. By carefully adjusting these parameters, the system achieves wide aperture capability while maintaining image quality through computational optimization of the optical path.
Solution Approach 2:
The lens assembly uses multiple lens elements with different refractive indices and dispersion characteristics arranged in a composite structure. This composite approach allows different parts of the system to compensate for each other's aberrations, enabling high aperture ratios while maintaining sharp image quality through the synergistic effect of multiple materials.
3Area of moving object
If field of view is widened to capture more scene, then coverage improves, but aberrations increase and image quality deteriorates
Solution Approach 1:
The lens elements incorporate aspheric surfaces with specific conic coefficients to control light paths from wide field angles. The aspheric curvature is optimized to reduce off-axis aberrations while maintaining the wide field of view, allowing the system to capture broader scenes without sacrificing image sharpness.
Solution Approach 2:
Complex aberration correction that would traditionally require multiple mechanical lens elements and precise mechanical alignment is achieved through computationally optimized optical designs with fewer, more strategically placed elements. The design uses software optimization to determine precise curvatures, thicknesses, and spacing, replacing complex mechanical adjustment systems with a simplified but highly effective optical configuration.
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 achieves a wide field of view, improved image quality, and compact design while reducing aberrations and manufacturing costs, suitable for various electronic devices.
Implementation Method 1
Each of the six lens elements has an object-side surface towards the object side and an image-side surface towards the image side... The first lens element preferably has negative refractive power... The fourth lens element preferably has positive refractive power... The fifth lens element preferably has positive refractive power
Data Source
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AI summary
An image lens assembly includes six lens elements (E1, E2, E3, E4, E5, E6), and the six lens elements (E1, E2, E3, E4, E5, E6) are, in order from an object side to an image side along an optical path, a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5) and a sixth lens element (E6). Each of the six lens elements (E1, E2, E3, E4, E5, E6) has an object-side surface towards the object side and an image-side surface towards the image side. The first lens element (E1) with negative refractive power has the image-side surface being concave in a paraxial region thereof. The second lens element (E2) has negative refractive power. At least one surface of at least one of the six lens elements (E1, E2, E3, E4, E5, E6) includes at least one inflection point (IP).