Multi-lens Optical Module with Electromagnetic Actuator
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Solution Overview
Problem
The challenge lies in developing compact camera modules for portable electronic devices that are smaller, lighter, and cost-effective, while maintaining optical system manufacturing tolerances and providing adjustable focus capabilities.
Innovation Solution
An optical module with a plurality of lenses and image sensors, utilizing an electromagnetic actuation and restraint mechanism to adjust the focus, allowing selection between individual lens assemblies and adjusting the focal ratio between them and the image sensors, facilitated by a combination of magnets and coils for precise focus control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the camera module size is reduced to meet portable device requirements, then the module becomes more compact and suitable for slim devices, but the manufacturing tolerances become more difficult to maintain
Solution Approach 1:
The optical system is divided into multiple discrete lens assemblies (first lens assembly, second lens assembly, etc.) that can be independently positioned and focused. Each lens assembly can be selectively activated and focused on different planes, allowing the system to maintain precise optical performance in a compact form factor by segmenting the optical path rather than relying on a single complex lens system.
Solution Approach 2:
The patent implements dynamic focus adjustment mechanisms that allow lens assemblies to move between different focal planes. The system can dynamically select which lens assembly to use and adjust its position to achieve sharp focus, enabling compact design while maintaining manufacturing tolerances through active compensation rather than passive precision.
2Measurement precision
If multiple lens assemblies are used to provide focus adjustment, then the focus precision and adaptability are improved, but the device complexity increases
Solution Approach 1:
Multiple lens assemblies share common support structures, control mechanisms, and mounting interfaces. The system uses a unified control architecture that can selectively activate different lens assemblies based on focusing requirements, allowing the same hardware infrastructure to serve multiple focal depth functions without proportionally increasing overall system complexity.
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
Enables the creation of compact, adjustable, and cost-effective camera modules for portable devices, enhancing focus precision and reducing manufacturing complexities, suitable for slimmer and lighter electronic apparatuses.
Implementation Method 1
an electromagnetic actuator comprising at least one magnet and at least one coil may be used to adjust the focal distance
Implementation Method 2
an electromagnetic actuator comprising at least one magnet and at least one coil may be used to adjust the focal distance
Data Source
AI summary
The subject matter disclosed herein relates to an optical module that includes a plurality of lenses and an electromagnetic actuator to adjust a zoom level or focus of the optical module.