Image Sensor Anti-Shake Module for Thin Camera Height
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Solution Overview
Problem
Existing camera modules in mobile phones face image blurring due to hand trembling, and traditional optical image stabilization methods increase the overall height of the camera module by directly stacking the image sensor, which is not suitable for thinner designs.
Innovation Solution
An imaging apparatus with an anti-shake module that includes a base, a carrier, flexible connection members, and an actuator set, allowing the image sensor to move on its plane without raising the imaging surface height, enabling anti-shake compensation while maintaining a thinner design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the image sensor is directly stacked on the optical image stabilizer, then the anti-shake function is improved, but the overall height of the camera module increases
Solution Approach 1:
The image sensor is nested within the cavity of the base structure, with the carrier positioned inside the cavity to carry the image sensor. This nested arrangement allows the anti-shake mechanism to be integrated within the existing camera module footprint without increasing the overall height, as the carrier and image sensor are housed within the cavity space rather than stacking externally.
Solution Approach 2:
The patent transitions from vertical stacking (increasing height in the Z-direction) to horizontal arrangement within the cavity (utilizing X-Y plane space). The carrier moves laterally within the cavity to provide anti-shake compensation, converting the anti-shake mechanism from a vertical stacking approach to a horizontal movement approach, thereby avoiding height increase.
2Length of stationary object
If the distance between the lens group and the imaging surface is shortened, then the camera module height is reduced, but the imaging effect deteriorates
Solution Approach 1:
The patent employs a movable carrier that can dynamically adjust the position of the image sensor within the cavity. This dynamic positioning allows the system to maintain the optimal imaging distance while keeping the overall module height reduced, as the carrier can move to compensate for the shortened distance rather than requiring a fixed longer structure.
Solution Approach 2:
The carrier acts as an intermediary between the base and the image sensor, providing a movable platform that carries the image sensor. This intermediary structure enables the image sensor to be positioned at the correct imaging distance while the overall module height remains compact, as the carrier mediates the spatial relationship between the lens group and the imaging surface.
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 solution effectively compensates for camera shake in multiple axes without increasing the camera module's height, enhancing image stability and maintaining a compact form factor.
Implementation Method 1
each actuator in the actuator set includes a fastened end and a movable end; and the fastened end of each actuator in the actuator set is connected to the base, and the movable end of each actuator in the actuator set moves close to or away from the base, to drive the carrier to move
Implementation Method 2
the base provides support for the carrier by using the flexible connection member
Data Source
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AI summary
Embodiments of this application provide an imaging apparatus and a terminal device. The imaging apparatus includes an image sensor and an anti-shake module, the image sensor includes a photosensitive region, and the anti-shake module includes a base, a carrier, a flexible connection member, and an actuator set. The base includes a cavity, a depth of the cavity is greater than or equal to a thickness of the image sensor, the carrier and the image sensor are disposed in the cavity, and the base provides support for the carrier by using the flexible connection member. The carrier includes a through hole, a size of the through hole is greater than or equal to that of the photosensitive region, the carrier is separately electrically connected to the image sensor and the base, and a bottom surface of the carrier is fastened to a top surface of the image sensor. Each actuator in the actuator set includes a fastened end and a movable end. The fastened end of each actuator in the actuator set is connected to the base, and the movable end of each actuator in the actuator set moves close to or away from the base, to drive the carrier to move, and drive the image sensor to move.