Camera Barrier Unit Cap Edge Notch Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional barrier units for cameras are prone to deformation under external forces, which can interfere with the opening and closing of the barrier blades due to the design of the cap edge and surrounding portions, leading to potential blockage of the optical path and flare phenomena.
Innovation Solution
A barrier unit design featuring a cap with a notched portion and sloped edges around its window, where the notched portion provides a clearance and the sloped edges are angled to prevent deformation, ensuring smooth operation of the blades even when subjected to external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the edge of the barrier protective cap forms an acute angle with respect to the barrier blades to prevent blocking the optical path, then the optical path is not blocked, but the edge becomes thin and easily deformed under external force
Solution Approach 1:
The cap edge is segmented into multiple functional portions: a first sloped portion for optical path clearance, a second sloped portion for deformation resistance, and a notched portion for blade clearance. This segmentation allows each portion to optimize its specific function without compromising overall performance.
Solution Approach 2:
Different portions of the cap edge are given different geometric properties tailored to their specific functions. The first sloped portion has a shallower angle for optical clearance, while the second sloped portion has a steeper angle for structural strength, and the notched portion provides localized clearance for blade operation.
2Object-affected harmful factors
If the gap between the barrier blades and the barrier protective cap is made narrow to prevent sand entry, then foreign matter protection is improved, but any deformation of the cap edge will eliminate the clearance and interfere with blade operation
Solution Approach 1:
The notched portion is pre-formed in the cap edge at a position and depth that guarantees sufficient clearance for blade operation even when the cap is deformed. This preliminary structural feature ensures that the blade can always operate without interference, regardless of external forces applied to the cap.
3Object-generated harmful factors
If the portion of the cap surrounding the window is designed with a steep slope to prevent reflected light from reaching the lens, then optical interference is prevented, but that portion becomes easily deformed under external force
Solution Approach 1:
The cap surrounding the window is designed with differentiated sloped portions having different angles. The first sloped portion maintains the necessary slope for preventing reflected light, while the second sloped portion has a steeper angle and is positioned to provide structural reinforcement, creating local quality variations that simultaneously address optical and mechanical requirements.
Data Source
AI summary
A barrier unit, of which the cap edge is not easily deformed even under some external force, is provided.The barrier unit includes: a base, which defines a first window; a cap, which defines a second window and which is arranged so that the second window faces the first window; and at least one blade, which is arranged between the base and the cap so as to open or close with respect to the first and second windows. A surface of the cap that is opposed to the at least one blade has a notched portion around the second window.