Optical domes are lenses with two concentric spherical surfaces. Sometimes they are referred to as bent plane parallel plates. Consequently it is usual to define parallelism between two surfaces as the maximum thickness variation between the two surfaces. In perfect domes, the convex radius equals the sum of the dome thickness and concave radius. Optical domes are used for underwater photography, as a part of a protective case. Also they are as a part of sun tracking used in solar collectors.
Product parameter
| Materials | Optical glass, quartz, infrared materials (calcium fluoride, zinc selenide, silicon, germanium) |
| Diameter Range | φ5-300mm |
| Diameter Tolerance | 0/-0.1 |
| Thickness Tolerance | ±0.05 |
| Surface Quality | 20-10 |
| Surface Flatness | N≤1, △N≤0.5 |
| Center | 0.01mm |
| Chamfer | ≤0.1 |
| Clear Aperture | > 90% |
| Coating | According to customer requirements |
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