Camera Module Shock Absorber Layout for Autofocus Stability
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Solution Overview
Problem
Camera modules face damage and reduced autofocus performance due to shocks from external forces, such as vibrations, which existing technologies fail to adequately mitigate.
Innovation Solution
A camera module design incorporating a first actuator with a guide and shock absorber to reduce shocks in one direction, and a second actuator with a stopper to restrict movement in a different direction, where the shock absorber is positioned between the guide and stopper to absorb and distribute shock effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a guide structure is used to guide the first carrier, then the optical assembly can be actuated in a specific direction, but shock transmission to the guide causes damage and reduced autofocus performance
Solution Approach 1:
The patent introduces a shock absorber component positioned between the first carrier and the guide structure. This shock absorber is designed to cushion and attenuate shocks before they reach the guide, preventing damage and maintaining autofocus performance while allowing the optical assembly to be actuated at required speeds.
Solution Approach 2:
The shock absorber acts as an intermediary element between the moving first carrier and the stationary guide structure. It mediates the interaction by absorbing shock energy, thereby protecting the guide from damage while still permitting controlled movement of the optical assembly.
2Stability of the object's composition
If a stopper is provided in the second carrier to restrict movement, then the second carrier's movement is controlled, but shock from the stopper can still transmit to other components
Solution Approach 1:
The patent positions a shock absorber between the stopper and other components. When the stopper restricts movement of the second carrier, any generated shock is absorbed by the shock absorber before it can transmit to other components, thereby maintaining movement control while eliminating harmful shock transmission.
Solution Approach 2:
The shock absorber is strategically placed to cushion shocks at their source - between the stopper mechanism and other components. This beforehand cushioning prevents shock propagation through the system while maintaining the stopper's effectiveness in restricting carrier movement.
3Reliability
If shock absorbers are added to reduce shock transmission, then component protection is improved, but device complexity increases
Solution Approach 1:
The patent divides the protection function into two separate shock absorber components: one for the first carrier-guide interface and another for the stopper-component interface. This segmentation allows each shock absorber to be optimized for its specific location and shock type, improving overall protection while keeping each individual component relatively simple.
Solution Approach 2:
The shock absorbers serve as intermediary elements that protect critical components without requiring fundamental redesign of the actuation system. By inserting these relatively simple cushioning elements at strategic points, the patent achieves enhanced reliability with minimal increase in overall device 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
This design effectively reduces shock transmission to the camera's components, enhancing autofocus performance and minimizing damage from external forces.
Implementation Method 1
a shock absorber provided in the first carrier and configured to reduce a shock transmitted to the guide
Implementation Method 2
a stopper provided in the second carrier and configured to restrict a movement of the second carrier
Data Source
AI summary
A camera module includes an optical assembly, a first actuator configured to actuate the optical assembly in a first direction, the first actuator including a first carrier, a guide configured to guide the first carrier, and a shock absorber provided in the first carrier and configured to reduce a shock transmitted to the guide, and a second actuator configured to actuate the optical assembly in a second direction different from the first direction, the second actuator including a second carrier spaced apart from the first carrier, and a stopper provided in the second carrier and configured to restrict a movement of the second carrier, wherein the shock absorber is provided between the guide and the stopper.