Multi-aperture Camera Shared Frame Stabilization
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Solution Overview
Problem
Conventional optical image stabilization systems for devices with multiple image sensors and lens sets face challenges in maintaining a constant baseline distance and registration, leading to unreliable stereoscopic depth information when independently stabilizing each sensor and lens set.
Innovation Solution
A shared frame is coupled to multiple lens sets or image sensors, allowing joint movement to counteract device vibration while maintaining a fixed spatial arrangement, with actuators like electromagnetic coils or piezoelectric actuators moving the shared frame perpendicular to the optical axes to stabilize the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If independent stabilization is applied to each sensor and lens set, then image quality for each sensor is improved, but baseline distance and registration become unstable
Solution Approach 1:
The patent merges multiple lens sets and image sensors onto a single shared frame structure, enabling them to move together as one unit during stabilization. This combining approach ensures that all optical components maintain their relative spatial relationships and registration, solving the problem of unstable baseline distance while still allowing effective vibration counteraction for the entire multi-aperture system.
2Manufacturing precision
If a shared frame is used for joint movement, then baseline distance and registration are maintained, but device complexity increases
Solution Approach 1:
The shared frame structure serves multiple functions simultaneously: it provides mechanical support for all lens sets and image sensors, maintains precise spatial registration between them, and acts as a single stabilization platform that moves collectively to counteract vibrations. This multi-functionality reduces the need for separate stabilization mechanisms for each sensor, ultimately simplifying the overall system despite the sophisticated frame design.
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 approach ensures that the baseline distance and registration remain constant, enabling reliable recovery of depth information and minimizing adverse effects on image quality.
Implementation Method 1
actuators like electromagnetic coils or piezoelectric actuators moving the shared frame perpendicular to the optical axes
Implementation Method 2
actuators like electromagnetic coils or piezoelectric actuators moving the shared frame perpendicular to the optical axes
Data Source
AI summary
Systems and methods are described that relate to optical image stabilization in mobile computing devices that include multiple optical element sets. In an example embodiment, a mobile computing device may include a plurality of optical element assemblies, which may be coupled to a shared frame. The shared frame may be configured to maintain a fixed spatial arrangement between the optical element assemblies. A controller may receive a signal indicative of a movement of the mobile computing device. Based at least on the signal, the controller may determine a stabilization movement of the shared frame. The controller may cause an actuator to move the shared frame according to the stabilization movement. Optionally, the shared frame may also be configured to provide focus adjustments. For example, the controller may be additionally configured to cause the shared frame to move to a focus position based on a focus signal.