Tilt Adjustment for Movable Body in Shake Correction Unit
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Solution Overview
Problem
Existing optical units with shake correction functions face challenges in accurately adjusting the tilt of a movable body relative to a fixed body, leading to deviations in the optical axis alignment, which affects the performance of the optical system.
Innovation Solution
A tilt adjusting method that utilizes a shake correction drive mechanism to apply an unbalanced load to the movable body, align its tilt direction with a target direction, and then fixes it using an elastic support member, ensuring precise alignment and stability through UV-curing adhesive and feedback control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plate-shaped spring is used to support the movable body, then the movable body can be swingably supported, but the tilt adjustment requires high precision to reduce optical axis deviation
Solution Approach 1:
The patent applies preliminary action by performing tilt adjustment before final fixation of the movable body to the plate-shaped spring. The adjustment is conducted while the movable body is still loosely mounted, allowing precise positioning. After adjustment, the movable body is then firmly fixed, preserving the precisely adjusted tilt angle. This sequence ensures high optical axis alignment without requiring extremely tight manufacturing tolerances during assembly.
2Stability of the object's composition
If the movable body is firmly fixed to the plate-shaped spring, then the structure becomes stable, but tilt adjustment becomes difficult
Solution Approach 1:
The patent implements preliminary action by performing tilt adjustment before final fixation. The movable body is initially mounted in a loose state on the plate-shaped spring, enabling easy adjustment of the tilt angle. Once the optimal tilt angle is achieved, the movable body is then firmly fixed to the spring, ensuring structural stability while preserving the adjusted configuration.
3Device complexity
If internal drive mechanisms are used for tilt adjustment, then device complexity is reduced, but variation in tilt adjustment increases
Solution Approach 1:
The patent applies preliminary action by performing manual tilt adjustment before final assembly, allowing precise positioning using simple external tools. After the movable body is precisely adjusted and fixed to the plate-shaped spring, the system achieves high precision without requiring complex internal drive mechanisms for adjustment, thus reducing device complexity while maintaining manufacturing precision.
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 method allows for high-accuracy tilt adjustments of the movable body, reducing variations and ensuring stable optical axis alignment, even when using internal drive mechanisms, thereby enhancing the performance of optical systems.
Implementation Method 1
fixes it using an elastic support member, ensuring precise alignment and stability through UV-curing adhesive
Data Source
AI summary
A movable body may be in a unit with a shake correction function having a movable body, a fixed body provided with a support mechanism structured to swingably support the movable body, a shake correction drive mechanism, and an elastic support member which connects the movable body with the fixed body. A tilt adjusting method for the movable body may include setting a state that a force having a component on an opposite direction to a driving force of the shake correction drive mechanism is acted on the movable body, adjusting the driving force so that a tilt direction of the movable body is substantially coincided with a target direction, and connecting the movable body with the fixed body through the elastic support member in a state that the tilt direction of the movable body is substantially coincided with the target direction.