Aluminum Off-Axis Parabolic Mirrors

Parameter

Protected Aluminum Coating

Enhanced Aluminum Coating

Working Wavelength Range

400 – 12 µm

250 – 700 nm

Typical Reflectance

Ravg ≥ 85% @ 400–700 nm

R_avg ≥ 97% @ 2–12 µm

R_avg  ≥ 89% @ 250–450 nm
R_avg  ≥ 85% @ 250–700 nm

Available Surface Roughness

50Å RMS / 100Å RMS

50Å RMS

Core Advantage

Broadband coverage, high durability for industrial use

Higher UV reflectance, optimized for UV-Vis spectroscopy

Recommended Scenarios

NIR laser focusing, thermal imaging, industrial systems

UV spectroscopy, UV laser systems

Parameter

Protected Al (50Å)

Protected Al (100Å)

Enhanced Al (50Å)

Clear Aperture

≥90%

≥90%

≥90%

Diameter Range

10 mm – 200 mm

10 mm – 300 mm

10 mm – 150 mm

Diameter Tolerance

+0.1 / -0.0 mm

+0.0 / -0.38 mm

+0.1 / -0.0 mm

Parent Focal Length

25 mm – 2000 mm, ±0.1%

25 mm – 2000 mm, ±1%

25 mm – 1500 mm, ±0.1%

Surface Figure (RMS @ 633 nm)

λ/8

λ/4

λ/8

Reflected Wavefront (RMS)

λ/4

λ/2

λ/4

Surface Roughness

< 50 Å RMS

< 100 Å RMS

< 50 Å RMS

Surface Quality

80-50

80-50

80-50

Working Wavelength Range

400 – 12 μm

400 – 12 μm

250 – 700 nm

Typical Reflectance

R_avg ≥85%@400–700 nm

R_avg ≥ 97% @ 2–12 μm

R_avg ≥ 85% @400–700 nm

R_avg  ≥ 97% @ 2–12 μm

R_avg ≥89%@250–450 nm

R_avg ≥85%@250–700 nm