| 1. | Protected Aluminum Coating |
| R>85%@400-700nm | |
| 2. | UV Enhanced Aluminum Coating |
| R>85%@250-700nm | |
| 3. | Protected Silver Coating |
| R>94%@350-1000nm | |
| 4. | Protected Gold Coating |
| R>94%@700-800nm, R>97%@800-2000nm |
Specifications:
| Material: | BK7 |
| Dimension Tolerance: | ±0.2mm |
| Flatness: | l/10 @ 632.8nm |
| Surface Quality: | 60/40 |
| Parallelism: | <1 arc minute |
| Clear Aperture: | >85% |
| Bevel: | 0.25mm x 45° |
| Front Surface: | Metallic Coated |
| Back Surface: | Fine Ground and Uncoated |


