Camera Parallax Reduction via Lens Positioning
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Solution Overview
Problem
In electronic devices with multiple cameras, parallax issues arise due to camera spacing and assembly deviations, leading to rapid changes in field of view (FOV) and image quality degradation when switching between cameras.
Innovation Solution
An electronic device with a processor that controls lens driving units to adjust the position of lenses in adjacent camera modules, ensuring minimal parallax by moving the second lens in a direction that reduces parallax with the first camera module, thereby maintaining image quality during camera switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cameras are spaced apart to provide different FOVs and capture images, then image quality and FOV diversity are improved, but parallax occurs causing rapid FOV changes and image quality degradation when switching between cameras
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing parallax compensation values for each camera module before switching occurs. When a camera switch is initiated, the system retrieves the pre-computed compensation value corresponding to the target camera module and applies it immediately, preventing FOV jump and maintaining image quality stability during the transition.
Solution Approach 2:
The patent changes the FOV parameter dynamically by adjusting the lens focal length or aperture settings when switching between camera modules. By modifying these optical parameters in advance or during the transition, the system compensates for parallax effects and maintains consistent FOV across camera switches, thereby preserving image quality stability.
2Adaptability or versatility
If camera modules are positioned at a predetermined distance to achieve different FOVs, then capturing capability is improved, but assembly deviation causes parallax and FOV center misalignment
Solution Approach 1:
The patent implements feedback by measuring the actual FOV center positions of each camera module during or after assembly, comparing them against reference values, and calculating compensation values based on the detected deviations. These compensation values are stored and applied during camera switching to correct FOV center misalignment caused by assembly deviations, thereby maintaining capturing capability while compensating for manufacturing imprecision.
3Stability of the object's composition
If lens position is adjusted to reduce parallax during camera switching, then FOV stability is improved, but additional lens driving mechanisms increase device complexity
Solution Approach 1:
The patent applies universality by designing the lens driving unit to serve multiple functions: it not only performs standard focusing and zoom operations but also executes parallax compensation movements by adjusting lens position based on pre-calculated compensation values. This multi-functional approach enables FOV stability during camera switching without requiring separate dedicated mechanisms, thereby reducing overall device complexity while maintaining stability.
Data Source
AI summary
An electronic device is provided that includes a display, and a first camera module including a first lens and a first lens driving unit. The electronic device also includes a second camera module including a second lens and a second lens driving unit. The electronic device further includes a processor configured to display a first image, which is obtained through the first camera module. The processor is also configured to receive an input associated with switching from the first camera module to the second camera module. Additionally, the processor is configured to move the second lens in a direction that reduces parallax with the first camera module by using the second lens driving unit. The processor is further configured to display a second image, which is obtained through the second camera module in the state in which the second lens is moved.