Urethane Acrylate Dome Camera Cover Coating
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Solution Overview
Problem
Existing camera cover coatings for surveillance cameras, such as those with silicone resin and urethane acrylate resin, face issues like cracking and high production costs, and insufficient abrasion resistance, which affect image quality and durability, especially in outdoor installations.
Innovation Solution
A camera cover with a dome-shaped design featuring a coating made of urethane acrylate resin, which is photocurable and has a Berkovich hardness of at least 0.4 GPa, providing enhanced abrasion resistance and ease of manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a coating with silicone resin is applied to the camera cover, then the camera cover becomes scratch-resistant, but cracks may occur after film deposition and production cost increases due to long baking time
Solution Approach 1:
The patent changes the material composition parameters by using urethane acrylate resin instead of silicone resin, and adjusts the Berkovich hardness to 0.4 GPa or more at an indenter penetration depth of 100 to 300 nm. This parameter change enables the coating to achieve both scratch resistance and crack resistance without the reliability issues of the silicone resin coating.
2Strength
If a coating with silicone resin is applied to the camera cover, then the camera cover becomes scratch-resistant, but production cost increases due to long baking time
Solution Approach 1:
The patent replaces the thermal curing mechanism (baking) with a photocurable mechanism using urethane acrylate resin. This substitution eliminates the need for long baking times, thereby reducing production costs while maintaining the scratch resistance property of the coating.
3Strength
If a coating is applied to the camera cover, then abrasion resistance is improved, but image quality may be affected by insufficient hardness
Solution Approach 1:
The patent precisely controls the Berkovich hardness parameter of the coating to be 0.4 GPa or more at an indenter penetration depth of 100 to 300 nm. This specific parameter setting ensures that the coating has sufficient abrasion resistance while maintaining optical clarity and not affecting image quality captured by the surveillance camera.
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 achieves high abrasion resistance and cost-effectiveness, ensuring long-term outdoor installation suitability by maintaining image quality and durability through the use of a photocurable urethane acrylate resin coating with specific hardness and thickness characteristics.
Implementation Method 1
a coating formed on a surface of the camera cover, the coating containing a urethane acrylate resin
Data Source
AI summary
A camera cover is provided. The camera cover has a coating formed on a surface of the camera cover. The coating contains a urethane acrylate resin. The camera cover has a dome shape and is designed to protect an image capturing unit. A Berkovich hardness at an indenter penetration depth of 100 to 300 nm on a surface of the coating is at least 0.4 GPa.