Camera Light Shield Arc Surface Rectangular Cylindrical Gap
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Solution Overview
Problem
The existing camera designs with extendable lens barrels suffer from lower light-shielding and dustproof performance due to gaps between the rectangular bellows frame and cylindrical lens barrel components, leading to separation or slippage issues.
Innovation Solution
A camera design featuring a stationary cylinder with a rectangular base and cylindrical wall, an extendable unit, and a light shield with a pressure plate that secures the bellows to the frame, using an arc surface to prevent gaps and ensure proper alignment, thereby enhancing light-shielding and dustproof performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rectangular bellows frame is used to secure the lens barrel to the camera body, then the light-shielding and dustproof performance deteriorates due to gaps between the rectangular frame and cylindrical lens barrel components
Solution Approach 1:
The pressure plate incorporates an arc surface that conforms to the cylindrical shape of the lens barrel component. This curved surface design eliminates gaps between the rectangular bellows frame and the cylindrical lens barrel, ensuring continuous light-shielding and dustproof coverage while maintaining secure mechanical attachment.
2Stability of the object's composition
If a rectangular bellows frame is used to secure the lens barrel, then the structural stability deteriorates due to separation or slippage between mismatched geometric shapes
Solution Approach 1:
The arc surface on the pressure plate is designed to match the cylindrical geometry of the lens barrel component. This geometric compatibility prevents separation and slippage by ensuring continuous contact along the curved interface, thereby enhancing structural stability during lens barrel extension and retraction operations.
3Ease of manufacture
If a simple rectangular frame is used for the bellows, then the ease of manufacture is improved, but the light-shielding performance deteriorates due to gaps at the interfaces
Solution Approach 1:
The pressure plate is designed with an arc surface that can be integrated into the existing rectangular bellows frame structure. This modification maintains the overall simplicity of manufacture while locally adapting the interface geometry to eliminate gaps, thus preserving both manufacturing ease and light-shielding performance.
Data Source
AI summary
A camera is less likely to have lower light-shielding performance. The camera includes a frame accommodated in a housing having a front surface with an opening, a lens barrel accommodating a lens, a rear light shield that blocks light outside the lens barrel, and a pressure plate pressing the rear light shield against the frame and securing the rear light shield to the frame. A base in a stationary cylinder has an inner surface being rectangular, an arc surface extending outward in an arc along a cylindrical wall, and a contact surface in contact with a front surface of the pressure plate. The pressure plate includes a pressing portion being a rectangular frame extending along the inner surface of the base in the stationary cylinder and in contact with a rear connector in the rear light shield, and an extension extending outward from the pressing portion and facing the arc surface of the base in the stationary cylinder.