Elliptical Mirror, Aluminum, N-BK7, 25.4 mm x 35.9 mm, λ/10, 450-700 nm

The 10E20ER.1 Broadband Aluminum Elliptical Mirror is an excellent general purpose, broadband reflector. This 25.4 mm (1 inch ) minor axis, 35.9 mm (1.41 inch) major axis, elliptical mirror is made from a 6.0 mm thick N-BK7 substrate. The ER.1 enhanced aluminum coating may be used wherever a broadband visible and near infrared reflector is needed. A multilayer dielectric stack deposited over the aluminum film boosts reflectance and improves the durability of the coating. The 10E20ER.1 has an average reflectivity greater than 93% from 450 - 700 nm. This mirror has a λ/10 surface flatness and a 40-20 surface quality.

Specifications

Technical Specs

Wavelength Region
VIS
Wavelength Range
450-700 nm
Mirror Shape
Elliptical
Mirror Size
25.4 x 35.9 mm
Thickness
6.0 mm
Material
N-BK7
Coating Type
Enhanced Aluminum
Coating Code
ER.1
Surface Quality
40-20 scratch-dig
Surface Flatness
λ/10 at 632.8 nm
Angle of Incidence
0-45°

Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Reflectivity
R_avg>93%, R_min>90 % @ 450-700 nm
Damage Threshold
0.5 J/cm² with 10 ns pulses at 532 nm, 20Hz
Thickness Tolerance
±0.2 mm
Chamfers
0.38–1.14 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Wavelength Region
VIS
Wavelength Range
450-700 nm
Mirror Shape
Elliptical
Mirror Size
25.4 x 35.9 mm
Thickness
6.0 mm
Material
N-BK7
Coating Type
Enhanced Aluminum
Coating Code
ER.1
Surface Quality
40-20 scratch-dig
Surface Flatness
λ/10 at 632.8 nm
Angle of Incidence
0-45°

Clear Aperture
≥central 80% of diameter
Back Surface
Ground
Reflectivity
R_avg>93%, R_min>90 % @ 450-700 nm
Damage Threshold
0.5 J/cm² with 10 ns pulses at 532 nm, 20Hz
Thickness Tolerance
±0.2 mm
Chamfers
0.38–1.14 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Resources & Downloads

Other

10E20ER.1 RoHS Certificate(705 kB, PDF)
ER.1 Raw Data.xlsx(237.2 kB, XLSX)

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