Folded Optical Path for Compact Imaging Stabilization
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Solution Overview
Problem
Electronic devices with long focal length lens systems face challenges in miniaturization due to increased thickness and suffer from unclear imaging when shaken, as the light-sensing element's position shifts, leading to unstable image quality.
Innovation Solution
An optical system incorporating a light-sensing element, optical lens, and a reflecting unit with a reflecting surface, along with multiple driving assemblies that allow the reflecting unit to move and rotate along various axes to adjust the focus position of the reflecting light on the light-sensing element, ensuring optical image stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a lens system with a long focal length is used, then the imaging quality is improved, but the thickness of the electronic device increases
Solution Approach 1:
The patent introduces a reflecting unit (mirror) to fold the optical path, changing the linear arrangement of optical components into a folded configuration. This allows the optical system to achieve a long focal length while keeping the device thickness compact by utilizing spatial folding in another dimension.
Solution Approach 2:
The patent nests the reflecting unit within the lens system, placing the mirror inside the optical path between the lens and the light-sensing element. This nested configuration allows the long focal length optical path to be contained within a compact device thickness.
2Length of stationary object
If a reflecting member is disposed inside the lens system to reduce thickness, then the device thickness is reduced, but the image becomes unclear when the device is shaken
Solution Approach 1:
The patent introduces driving assemblies that can dynamically adjust the position and/or orientation of the reflecting unit in real-time. This dynamic adjustment capability allows the system to compensate for shaking movements and maintain clear imaging, transforming the static optical system into an adaptive one.
Solution Approach 2:
The patent employs driving assemblies that respond to device shaking by adjusting the reflecting unit's position. This feedback mechanism detects the shaking disturbance and counteracts it through active position adjustment of the reflecting unit, maintaining stable image quality.
3Ease of operation
If the light-sensing element position shifts due to shaking, then the device portability is improved, but the imaging stability deteriorates
Solution Approach 1:
The patent makes the reflecting unit dynamically adjustable through driving assemblies, enabling real-time compensation for position shifts caused by shaking. This dynamic adjustment maintains imaging stability while allowing the device to remain portable and handheld.
Solution Approach 2:
The driving assemblies perform preliminary anti-action by proactively adjusting the reflecting unit position to counteract the effects of shaking before they can cause significant image degradation. This preemptive stabilization maintains imaging quality during portable use.
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
The optical system effectively stabilizes images by compensating for shifts caused by device movement, maintaining image quality and enabling the use of long focal length lenses in compact electronic devices.
Implementation Method 1
The reflecting unit includes a reflecting surface, configured to receive an incident light and to reflect a reflecting light
Data Source
AI summary
An optical system is provided and includes a light-sensing element, a reflecting unit and a first driving assembly. The reflecting unit includes a reflecting surface, configured to receive an incident light and to reflect a reflecting light. The reflecting light travels into the light-sensing element. The first driving assembly is configured to control the reflecting unit to move along a first axis direction from a first position to a second position, so as to adjust a focus position of the reflecting light on the light-sensing element, wherein the reflecting surface in the first position is parallel to the reflecting surface in the second position, and a distance between a center of the reflecting unit in the first position and the center of the reflecting unit in the second position is not zero.