Aluminum Mirror

This is a vapor-deposited aluminum flat mirror with the substrate polished with high accuracy, designed for high reflectivity at any incident angle.

With four types to choose from; (TFAN/TFAQN) which is coated with aluminum only, (TFA/TFAQ) which is coated with a protective coating against accidental hard scratches, (TFAE) which is coated aluminum 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.

Common 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/cm²(pulse width 10ns, repetition frequency 20Hz)
Surface Quality (Scratch-Dig)	40 － 20
Clear Aperture	90% of actual aperture or circle or ellipse that contacts 90% spuare of dimension