Optical Image Capturing Module with Movable Lens Groups
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 low-light 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 focusing mechanism, to reduce size and enhance light intake, allowing for better imaging quality and increased pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical system uses conventional lens configurations (5-6 lenses), then high optical performance and large aperture are achieved, but the device size increases
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) that can move independently along the optical axis. This segmentation allows each group to contribute differently to focusing and aberration correction, achieving high optical performance with reduced overall system complexity and size compared to conventional 5-6 lens configurations.
Solution Approach 2:
The patent implements a dynamic focusing mechanism where at least one lens group can move along the optical axis to adjust focus. The movable lens groups enable the system to adapt to different object distances while maintaining compact size, as the dynamic adjustment replaces the need for larger fixed-focus optical paths required in conventional static systems.
2Illumination intensity
If the optical system is designed for large aperture to increase light intake, then imaging quality in dark environments improves, but the device size increases
Solution Approach 1:
Different lens groups are assigned specific optical functions: the first lens group with positive refractive power collects and converges light to enhance light intake capability, while the second lens group with negative refractive power diverges light to correct spherical aberration. This local optimization of optical properties in different zones of the system allows large effective aperture for light gathering while maintaining compact overall dimensions through efficient spatial arrangement.
3Volume of moving object
If the optical system minimizes size for compact electronic devices, then device portability improves, but light intake and imaging quality deteriorate
Solution Approach 1:
The optical system employs a nested arrangement where multiple lens groups are positioned concentrically along a compact optical path. The movable lens groups can be positioned within the depth of the compact housing, allowing the light to traverse an extended effective optical path length within a minimal external footprint. This nesting enables sufficient light gathering area and focal length in a space-constrained environment.
4Measurement precision
If the optical system uses high pixel count image sensing devices, then imaging quality improves, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical lens assemblies with a streamlined multi-group lens system that achieves high-resolution imaging through optimized refractive power distribution and controlled movement. The mechanical simplicity of moving only specific lens groups (rather than entire lens assemblies) reduces the complexity of drive mechanisms, positioning systems, and control electronics while maintaining the capability to support high-pixel-count sensors.
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 effectively improves light intake and imaging quality, enabling high-resolution images in compact electronic devices, even in low-light conditions, by optimizing the lens configuration and movement within the module.
Implementation Method 1
The lens group includes a first lens with positive refractive power, a second lens with negative refractive power, and a third lens with positive refractive power
Data Source
AI summary
An optical image capturing module includes a lens assembly and a circuit assembly including a circuit substrate, a sensor holder, and an image sensing component electrically connected to the circuit substrate via signal transmission elements. The lens assembly includes a fixed base disposed on the sensor holder, a movable base, and a lens group. The fixed base made of an opaque material has a focusing hole penetrating through two ends of the fixed base, thereby the fixed base is hollow, and the image sensing component is located in the focusing hole. The movable base is disposed in the focusing hole, and could move relative to the fixed base. The lens group includes at least two lenses having refractive power, and is disposed in a receiving hole of the movable base, thereby light could pass through the lens group and the through hole and project onto the image sensing component.