Optical Image Capturing Module with Asymmetric Lens Curvature
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical image capturing systems in portable electronic devices face challenges in minimizing size while maintaining high imaging quality and increasing light intake, especially in dark environments.
Innovation Solution
The optical image capturing module employs a structural design with a combination of refractive powers and convex/concave surfaces in at least two optical lenses, along with a movable lens group and a fixed base, to reduce size and enhance light entry, improving imaging quality and pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical system uses conventional design with five or six lenses, then high optical performance is achieved, but the device size is large
Solution Approach 1:
The optical system is divided into multiple lens elements (first lens, second lens, third lens, fourth lens, fifth lens, sixth lens) with specific refractive powers and surface configurations. Each lens element contributes to correcting optical aberrations while maintaining a compact overall structure, allowing high optical performance in a reduced device volume.
Solution Approach 2:
The patent specifies precise parameter ranges for lens curvature radii (R1 through R12), thicknesses (d1 through d6), and refractive powers to optimize the balance between optical performance and compact size. By carefully controlling these parameters, the system achieves high imaging quality without requiring a large number of lens elements.
2Illumination intensity
If the aperture is increased to take more light in dark environments, then light intake is improved, but the device size increases
Solution Approach 1:
The patent employs asymmetric surface configurations in the lens elements, with specific convex and concave surfaces having different curvature radii. This asymmetric design allows for optimized light gathering efficiency, enabling larger effective aperture for light intake while maintaining a compact lens physical size.
Solution Approach 2:
The lens surfaces are designed with specific curvature characteristics, where certain surfaces are convex and others are concave with precisely controlled radius of curvature. This curvature optimization enables efficient light collection and focusing, achieving high light intake capability in a compact form factor suitable for portable devices.
3Measurement precision
If the pixel density is increased to improve imaging quality, then image resolution is enhanced, but the device size increases
Solution Approach 1:
The optical system is designed to simultaneously correct multiple types of optical aberrations (spherical aberration, coma, astigmatism, field curvature, distortion) using a limited number of lens elements. This multi-functional design achieves high imaging quality suitable for high pixel density sensors without requiring additional lens elements that would increase device size.
Solution Approach 2:
The patent specifies precise parameter ranges for lens curvature radii, thicknesses, and spacing to optimize the optical path and minimize aberrations. By carefully controlling these parameters, the system achieves high imaging quality that supports increased pixel density while maintaining a compact device form factor.
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
This design allows for better light intake and improved imaging quality, enabling higher pixel density and enhanced performance in compact electronic devices, including dual-mode visible and infrared capabilities.
Implementation Method 1
The lens group includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, each having different refractive powers
Data Source
AI summary
An optical image capturing module includes a lens assembly and a circuit assembly including a circuit substrate having a through hole and an image sensing component. A lower surface of the circuit substrate has multiple circuit contacts. A sensing surface of the image sensing component has multiple image contacts. Each image contact is electrically connected to one of the circuit contacts via a signal transmission element, thereby the sensing surface directly faces the through hole. The lens assembly includes a fixed base disposed on an upper surface of the circuit substrate, a movable base disposed in a focusing hole, and a lens group disposed in the movable base. The fixed base has the focusing hole penetrating through two ends thereof. The lens group includes at least two lenses having refractive power, thereby light could pass through the lens group and the through hole and project onto the image sensing component.