Mirrors have a highly polished surface for reflecting light. The reflecting surface is usually a thin coating of aluminum or silver. Most mirrors for optical applications are called first surface types since the coating is on the front surface thereby eliminating the optical properties of the glass from affecting the incident or reflected light. The rear surface is usually fine ground.
All of the following mirrors have a protected Aluminum coating applied to the front surface.
| Specification | Standard Grade | High Grade |
| Material | BK7 grade A | BK7 grade A or Fused Silica |
| Dimensional Tolerance | +0.0/-0.1mm | +0.0/-0.1mm |
| Flatness (TWF) |
λ /5 @ 632.8nm | λ /10 @ 632.8nm |
| Surface Quality Scratch/Dig |
40/20 | 10/5 |
| Thickness Tolerance | ±0.2mm | ±0.2mm |
| Parallelism | < 3 arc minutes | < 3 arc minutes |
| BK7 Grade A Optical Glass, Standard MB11 and High MB12 | |||||||
| Model No | Dia mm | Thick | Price | Model No | Dia mm | Thick | Price |
| MB11-010 | 10.0 | 2.0 | 20 | MB12-010 | 10.0 | 2.0 | 36 |
| MB11-012 | 12.5 | 2.0 | 20 | MB12-012 | 12.5 | 6.0 | 36 |
| MB11-020 | 20.0 | 2.0 | 23 | MB12-020 | 20.0 | 6.0 | 46 |
| MB11-025 | 25.0 | 2.0 | 26 | MB12-025 | 25.0 | 6.0 | 56 |
| MB11-038 | 38.0 | 4.0 | 30 | MB12-038 | 38.0 | 10.0 | 63 |
| MB11-050 | 50.0 | 4.0 | 40 | MB12-050 | 50.0 | 10.0 | 122 |
| UV Grade Fused Silica, High MF22 | |||||||
| Model No | Dia mm | Thick | Price | ||||
| MF22-010 | 10.0 | 2.0 | 46 | ||||
| MF22-012 | 12.5 | 6.0 | 53 | ||||
| MF22-020 | 20.0 | 6.0 | 66 | ||||
| MF22-025 | 25.0 | 6.0 | 79 | ||||
| MF22-038 | 38.0 | 10.0 | 254 | ||||
| MF22-050 | 50.0 | 10.0 | 304 | ||||
We make custom versions of everything on this site. Send us your drawings or specifications and we will provide a quotation.