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K9 visible light optical domes are made from K9 glass, a borosilicate material known for its high clarity and durability in visible light applications. These domes provide a protective, distortion-free barrier for sensitive optical components, widely used in underwater cameras, sensors, and environmental monitoring instruments to ensure optimal performance and protection.
| Material | K9 | |||
| Specification | Customized | |||
| Diameter Range | 20mm-200mm | |||
| Outside diameter Tolerance | ±0.02mm-±0.1mm | |||
| Center Thickness Tolerance | ±0.03mm-±0.1mm | |||
| Total High Tolerance | ±0.02mm-±0.05mm | |||
| Concave Sag | ±0.02mm-±0.05mm | |||
| Surface Quality | 60/40, 40/20, 20/10 | |||
| Surface Roughness | Ra≤0.04um | |||
| Surface Accuracy | PV λ：λ/2, λ/4 | |||
| ETV | ≤5′ | |||
| Transmittance | AR≥97%; DLC+AR≥90% | |||
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No.9 Zhongxing East Road, Lishui Economic Development Zone, Nanjing, Jiangsu, China 
