Aluminum Mirror, Float Glass, 50.8 mm Square, 5λ, 400-10,000 nm

Float Glass Square Broadband Metallic Mirrors

The 20SJ00ER.3 is a Utility Broadband Aluminum Mirror optimized for 400-10,000 nm with square dimensions of 50.8 x 50.8 mm and a 3.17 mm thickness.

These mirrors are excellent economical broadband reflectors. The front surface is coated with our ER.3 dielectric-enhanced aluminum coating. The 20SJ00ER.3 has an average reflectivity greater than 90% from 400-2000 nm. These mirrors can be used as a front or back surface reflector. A removable plastic sheet protects the mirror surface during shipment and handling, and can be left on if used as a back surface reflector.

Specifications

Technical Specs

Wavelength Region
Broadband
Wavelength Range
400-10000 nm
Mirror Shape
Square
Mirror Size
50.8 x 50.8 mm
Thickness
3.17 mm
Material
Float Glass
Coating Type
Enhanced Aluminum
Coating Code
ER.3
Surface Quality
60-40 scratch-dig

Surface Flatness
5λ per inch at 632.8 nm
Clear Aperture
>90% of Side Length
Back Surface
Polished
Reflectivity
R_avg>90% @ 400-2000 nm
Size Tolerance
±0.25 mm
Thickness Tolerance
±0.76 mm
Cleaning
See How to Clean Optics

Wavelength Region
Broadband
Wavelength Range
400-10000 nm
Mirror Shape
Square
Mirror Size
50.8 x 50.8 mm
Thickness
3.17 mm
Material
Float Glass
Coating Type
Enhanced Aluminum
Coating Code
ER.3
Surface Quality
60-40 scratch-dig

Surface Flatness
5λ per inch at 632.8 nm
Clear Aperture
>90% of Side Length
Back Surface
Polished
Reflectivity
R_avg>90% @ 400-2000 nm
Size Tolerance
±0.25 mm
Thickness Tolerance
±0.76 mm
Cleaning
See How to Clean Optics

Resources & Downloads

Other

20SJ00ER.3 RoHS Certificate(264.9 kB, PDF)
20SJ00ER.3_ROHS2-2021.pdf(279.9 kB, PDF)

2D Product Drawings

Square Utility Mirror Drawing(82.7 kB, PDF)

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