Aluminum Mirror Optics
Broadband reflectors
Not sensitive to polarization and incident angle
Low damage threshold
Metallic coated mirrors make very broad bandwidth
reflectors. Usually it is best to protect the coatings with a durable dielectric layer as they are very soft and
susceptible to scratching.The table shows the reflectance of each of the metals without any protection or
enhancement. Protected metallic coating has a dielectric coating layer over the metallic layer to protect the
coating from being oxidized in the air or from scratched
Coating code Specifications Average Reflectance(%)
·PAL ·Protected Aluminum Coating ·87.0
·PAG ·Protected Silver Coating ·98.0
·PAU ·Protected Gold Coating ·98.0
