Thin Lens Mounting for Optical Image Capturing Systems
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Solution Overview
Problem
Conventional optical image capturing systems in portable electronic devices struggle to meet advanced photography requirements, such as low light mode or night mode, due to insufficient light admission and image quality, especially with increasing pixel density.
Innovation Solution
An optical image capturing system with thin mounting components utilizing a combination of refractive powers from at least two optical lenses with convex and concave surfaces, along with thread-less configuration mechanisms, to increase light admission and improve image quality, featuring a positioning lens design with specific parameters like PhiD, HEP, and HAF, and employing active alignment assembly for precise lens positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional optical systems use a two-lens structure, then the device complexity is reduced, but the light admission and image quality are insufficient to meet advanced photography requirements
Solution Approach 1:
The optical 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) instead of using a conventional two-lens structure. This segmentation allows each lens group to perform specific functions, increasing light admission while managing complexity through functional division.
Solution Approach 2:
The patent employs a composite lens structure combining multiple lens materials with different refractive indices and dispersion characteristics. The first, second, and third lens groups use different material compositions to optimize both light admission and aberration correction, achieving superior image quality without excessive complexity.
2Measurement precision
If the pixel density of portable electronic devices continuously increases, then the image quality potential is improved, but the demand for large aperture and light admission capability increases
Solution Approach 1:
The patent optimizes key optical parameters including the refractive powers of the three lens groups, the curvature radii of lens surfaces, and the spacing between lens groups. By carefully adjusting these parameters, the system achieves a balance between light admission and image quality that matches high pixel density requirements.
Solution Approach 2:
The patent utilizes curved lens surfaces with specific radius of curvature values to optimize light path and improve light admission. The first lens group has object-side and image-side surface curvatures, the second lens group has similarly optimized curved surfaces, and the third lens group continues this curvature optimization to maximize both light gathering and image quality.
3Length of moving object
If thin mounting components are used, then the device thickness is reduced, but the light admission and angle of view are limited
Solution Approach 1:
The patent transitions from a conventional planar mounting approach to a three-dimensional lens configuration with optimized spacing between lens groups. By utilizing the third dimension (depth along the optical axis) more effectively, the system achieves improved light admission and angle of view while maintaining thin overall dimensions through compact radial arrangement.
Solution Approach 2:
The three lens groups are nested in a compact arrangement where the first lens group is positioned closest to the object side, followed by the second lens group, and then the third lens group closest to the image sensor. This nested configuration maximizes light admission within a thin profile by efficiently utilizing the available depth space.
4Ease of manufacture
If conventional optical systems are used, then the manufacturing simplicity is maintained, but the image quality in low light conditions is insufficient
Solution Approach 1:
The patent performs preliminary optical design and simulation to optimize the lens parameters before manufacturing. By pre-calculating the optimal refractive powers, curvatures, and spacing of the three lens groups, the system ensures high image quality in low light conditions while maintaining manufacturability through standardized optical component fabrication processes.
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 system effectively enhances light admission, increases the angle of view, and improves image quality by optimizing lens positioning and refractive power distribution, addressing the limitations of conventional systems in capturing high-quality images in various lighting conditions.
Implementation Method 1
an optical imaging lens set comprising at least two lenses having refractive power
Data Source
AI summary
An optical image capturing system with thin mounting components includes an optical imaging lens set providing at least two lenses with refractive power, an image plane, a first lens positioning element and a second lens positioning element. In certain conditions, the optical image capturing system with thin mounting components utilizes the member with a small thickness to design the positioning of the lenses, further effectively elevating the amount of light admitted into the optical image capturing system with thin mounting components and increasing the field of view thereof. The optical image capturing system with thin mounting components has an adequate illuminance and elevates the image quality in order to be applied to the small electronic products or the electronic products with slim border.