Rotating Shutter Mechanism for Mobile Camera Optics Protection
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Solution Overview
Problem
Conventional shutter mechanisms for protecting camera optics in mobile devices are too large and laborious to use, unsuitable for portable devices due to size and design constraints, and lack stable positioning mechanisms that function accurately without electricity.
Innovation Solution
A compact actuator mechanism using a permanent magnet and coil configuration to create a stable magnetic field, allowing the shutter mechanism to maintain precise positions, resist manual or vibrational movement, and operate accurately even when manually adjusted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional shutter mechanisms are used to protect camera optics, then the optics are protected, but the device size becomes too large for mobile phones
Solution Approach 1:
The shutter blade is positioned within the optical path such that it nests around the lens aperture. The blade rotates in a compact arc within the existing camera module volume, with the pivot point located near the lens. This nesting approach allows the shutter mechanism to be integrated into the existing device footprint without requiring additional external space.
Solution Approach 2:
The invention transitions from linear movement to rotational movement for the shutter blade. By rotating the blade around a pivot point located near the lens aperture, the mechanism achieves the same protective function within a smaller spatial envelope. The rotational path allows the blade to sweep across the aperture in an arc, reducing the required travel distance compared to linear mechanisms.
2Ease of operation
If conventional mechanical shutter constructions are used, then the shutter can be activated, but the operation becomes laborious and inaccurate
Solution Approach 1:
The invention replaces complex multi-component mechanical linkage systems with a simplified direct-rotation mechanism. The shutter blade rotates directly on a pivot point, eliminating the need for cams, linkages, and multiple moving parts. This mechanical simplification reduces operational complexity and improves positioning repeatability while maintaining reliability.
Solution Approach 2:
The invention changes the operational parameter from multi-stage mechanical actuation to single-stage rotational movement. By controlling the rotation angle of the shutter blade, the system achieves precise positioning with simpler control. The blade can be positioned at specific angles (e.g., 0 degrees for open, 90 degrees for closed) providing accurate and repeatable positioning.
3Volume of moving object
If the shutter mechanism is made compact for mobile devices, then the device size is reduced, but stable positioning becomes difficult to achieve
Solution Approach 1:
The invention incorporates a spring-loaded latch mechanism that engages with a detent on the shutter blade. This preliminary locking action prevents the blade from moving once positioned, counteracting any vibrational or manual forces that might otherwise displace the compact mechanism. The latch provides passive stability without requiring additional active control systems.
Solution Approach 2:
The spring-loaded latch is pre-positioned to engage with the shutter blade detent automatically when the blade reaches its target position. This preliminary engagement ensures stable positioning before any external forces act on the mechanism. The spring maintains constant contact force, ensuring the latch remains engaged during device operation.
4Reliability
If manual transferable covers are used to protect optics, then protection is provided, but the device becomes too large and design is limited
Solution Approach 1:
The invention merges the shutter function with the existing camera module structure. The shutter blade is integrated into the optical path alongside the lens and aperture, eliminating the need for separate protective covers. This consolidation reduces device complexity by combining multiple protective functions into a single integrated mechanism.
Solution Approach 2:
The shutter blade serves multiple functions: it protects the lens from environmental contamination, provides optical shuttering for photography, and can be positioned to allow manual focus adjustment. This multi-functionality eliminates the need for separate protective covers and focus mechanisms, simplifying the overall device construction.
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 enables a compact, accurate, and reliable shutter mechanism that effectively protects camera optics in mobile devices, maintaining stable positions and operating correctly even without power, allowing for manual adjustment without compromising device functionality.
Implementation Method 1
A compact actuator mechanism using a permanent magnet and coil configuration to create a stable magnetic field
Data Source
AI summary
In one example, an actuator mechanism comprising: one or more coils for establishing a magnetic field; a rotating permanent magnet, which has at least one extreme position depending on the magnetic field; and driving members, which are coupled to the permanent magnet and by means of which the members coupled to the actuator mechanism are driven. In another example, an actuator mechanism comprising: one or more wires, which are manufactured of a shape memory alloy that shrinks when heated; and driving members, which are coupled to said wire and by means of which the members connected to the actuator mechanism are driven.