Concave Metallic Mirror, 50.8 mm, 1000 mm Focal Length, 250-600 nm

The 20DC2000AL.2 UV enhanced aluminum concave mirror is used for focusing, collecting, and imaging with no chromatic aberration. This mirror can be used to manipulate laser beams or other broadband sources. This family of mirrors are available in three sizes, 12.7, 25.4, and 50.8 mm diameter, with radii of curvature from 25-2000 mm. This mirror is 50.8 mm in diameter, with an EFL of 1000 mm and coated for a wavelength range of 250-600 nm.

Specifications

Technical Specs

Wavelength Range
250-600 nm
Mirror Shape
Concave
Diameter
50.8 mm
Effective Focal Length (EFL)
1000 mm
F/#
19.7
Radius of Curvature (R)
-2000 mm
Material
Borofloat® 33
Coating Type
UV Enhanced Aluminum
Coating Code
AL.2
Angle of Incidence
0-15°
Reflectivity
R_avg>90% @ 250-600 nm
Damage Threshold
2 J/cm² with 10 ns pulses at 355 nm, 20Hz
Surface Quality
40-20 scratch-dig

Surface Flatness
λ/4 at 632.8 nm
Back Surface
Fine ground
Edge Thickness (Te)
9.53 mm
Center Thickness (Tc)
9.37 mm
Thickness Tolerance
±0.25 mm
Diameter Tolerance
+0/-0.13 mm
Wedge
≤0.03 mm
Chamfers
0.25–0.76 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Wavelength Range
250-600 nm
Mirror Shape
Concave
Diameter
50.8 mm
Effective Focal Length (EFL)
1000 mm
F/#
19.7
Radius of Curvature (R)
-2000 mm
Material
Borofloat® 33
Coating Type
UV Enhanced Aluminum
Coating Code
AL.2
Angle of Incidence
0-15°
Reflectivity
R_avg>90% @ 250-600 nm
Damage Threshold
2 J/cm² with 10 ns pulses at 355 nm, 20Hz
Surface Quality
40-20 scratch-dig

Surface Flatness
λ/4 at 632.8 nm
Back Surface
Fine ground
Edge Thickness (Te)
9.53 mm
Center Thickness (Tc)
9.37 mm
Thickness Tolerance
±0.25 mm
Diameter Tolerance
+0/-0.13 mm
Wedge
≤0.03 mm
Chamfers
0.25–0.76 mm face width
Chamfers Angle Tolerance
45° ±15°
Cleaning
See How to Clean Optics

Resources & Downloads

Other

20DC2000AL.2 RoHS Certificate(264.1 kB, PDF)
20DC2000AL.2_ROHS2-2021.pdf(280.9 kB, PDF)
AL.2 Raw Data CH.xlsx(1.6 MB, XLSX)

2D Product Drawings

20DC Series Drawing(101.5 kB, PDF)

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