OPTICS
Aluminum Mirrors
TFA_TFAN_TFAQ_TFAQN-S
This is a vapor-deposited aluminium flat mirror with the substrate polished with high accuracy, designed for high reflectivity at any incident angle.
Optics & Optical Coatings
- With four types to choose from; (TFAN/TFAQN) which is coated with aluminium only, (TFA/TFAQ) which is coated with a protective coating against accidental hard scratches, (TFAE) which is coated aluminium and a protective coating to increase the reflectance of ultraviolet and lastly, (OPBA/OPSQA) which provides Aluminum with protective coat on the optical parallel substrate.
- For ultraviolet, visible and near-infrared light applications.
- For low thermal expansion mirrors, we have (TFAQ/TFAQN) which is made of Synthetic fused silica that provides high rigidity and high precision surface quality.
Key Specifications
| Material | BK7 Synthetic fused silica Hard glass (Pyrex® etc.) |
| Coating | TFAN/TFAQN: Al (without protection coating) TFA/TFAQ/OPBA/OPSQA: Al+MgF2 (surface flatness λ/20 is Al+SiO) TFAE: Al + Dielectric multi-layer coating |
| Parallelism | TFA/TFAN/TFAQ/TFAQN/TFAE: <3′ OPBA/OPSQA: <2″ |
| Incident angle | TFA/TFAQ/TFAE: 45° OPBA/OPSQA: 0° |
| Laser Damage Threshold | 0.25J/c㎡ (pulse width 10ns, repetition frequency 20Hz) |
| Surface Quality (Scratch–Dig) | 40–20 |
