Aluminum Buffer Ring for Glass Window in High-Pressure Housing
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Solution Overview
Problem
Deep-sea underwater imaging systems face challenges due to image distortion caused by refraction in watertight camera housings, limited lens options, and the fragility and deformation of glass windows under high pressure, leading to compromised optical performance.
Innovation Solution
A camera housing system with a buffer ring made of aluminum foil, matching the thermal expansion coefficient of optical grade glass windows, is used between the glass window and the mounting ring to protect the glass from deformation and surface imperfections, allowing for the use of glass windows in high-pressure environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If glass windows are used in deep-sea housing, then optical performance is improved, but the glass becomes fragile and prone to deformation under high pressure
Solution Approach 1:
A buffer ring is installed between the glass window and the mounting ring to cushion and distribute the high pressure forces before they can cause deformation or fracture of the glass. This protective element is placed in advance to prevent damage rather than react to it.
Solution Approach 2:
The buffer ring acts as an intermediary element between the glass window and the mounting structure. It mediates the mechanical stress by providing a compliant layer that protects the glass from direct contact with the rigid mounting ring, thereby preventing stress concentration.
2Reliability
If acrylic windows are used instead of glass, then durability under high pressure is improved, but optical performance deteriorates due to deformation
Solution Approach 1:
The buffer ring serves as a protective intermediary that enables the use of glass windows by shielding them from the mechanical stresses that would otherwise cause deformation. This allows the system to achieve both the durability of pressurized environments and the superior optical performance of glass.
3Measurement precision
If glass windows are used in high-pressure environments, then optical performance is maintained, but the glass is prone to fracture due to high pressure and contact points
Solution Approach 1:
The buffer ring is positioned in advance between the glass window and mounting ring to cushion and distribute high pressure forces, preventing stress concentration that would lead to fracture. This protective measure is implemented before the housing is subjected to deep-sea pressures.
Solution Approach 2:
The buffer ring functions as a flexible protective element that can deform under pressure to absorb mechanical stresses. This flexible layer protects the brittle glass window from fracture by providing a compliant interface between the glass and the rigid mounting structure.
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 system enhances the durability and optical performance of glass windows in deep-sea environments by preventing deformation and fracture, maintaining image quality and allowing for wider lens usage without distortion.
Implementation Method 1
The buffer ring is a material having a coefficient of thermal expansion approximately equal to that of the window
Implementation Method 2
because of refraction, the image coming through the glass port will be distorted
Data Source
AI summary
A housing for underwater imaging comprising a first section for housing an optical instrument; a second section secured to the first section adapted to house a window; a window disposed within the second section; and a buffer ring disposed between the window and the first section. The buffer ring is a material having a coefficient of thermal expansion approximately equal to that of the window. In the best mode, the window is optical grade glass and the buffer ring is aluminum foil. In the illustrative embodiment, a mounting ring is disposed between the buffer ring and the second section of the housing. The mounting ring is steel and must be polished, lapped, stainless steel as well. The buffer ring protects the glass window from the mounting ring. A third ring is disposed over the window and secures it to the second section of the housing. The second section is removable relative to the first section to allow for a camera to be placed within the housing and secured thereby for deep-sea underwater use at high pressure.