Excelitas Optical Mirrors

Aluminum Circular Plano Mirrors

Aluminum Circular Plano Mirrors are versatile optical components designed for high-performance reflection in a wide range of applications. These standard mirrors are available for the visible to infrared or the ultraviolet spectral ranges, delivering high reflection across broad spectral and angle-of-incidence ranges. VIS–IR mirrors feature a protective SiO₂ overcoating, while UV mirrors are protected with an MgF₂ overcoating, ensuring durability and resistance to environmental influences. Manufactured from low-expansion substrates, they maintain excellent thermal stability and precise surface flatness, minimizing distortion under varying conditions.

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Custom substrates or coatings are available for large orders upon request. These aluminum plano mirrors offer reliability, versatility, and precision, making them well-suited for laboratory research, industrial optics, spectroscopy, and laser systems that require consistent, high-performance reflection.

Product Pl. Mirror RAL; D=6; d=1; L/4 Pl. Mirror RAL; D=10; d=2; L/4 Pl. Mirror RAL; D=10; d=2; L/10 Pl. Mirror RAL; D=12.7; d=2.5; L/4 Pl. Mirror RAL; D=12.7; d=2.5; L/10 Pl. Mirror RAL; D=12.7; d=5; L/10 Pl. Mirror RAL; D=18; d=4; L/2 Pl. Mirror RAL; D=18; d=4; L/10 Pl. Mirror RAL; D=21; d=4; L/4 Pl. Mirror RAL; D=22.2; d=4; L/2 Pl. Mirror RAL; D=22.2; d=4; L/10 Pl. Mirror RAL; D=25.4; d=5; L/2 Pl. Mirror RAL; D=25.4; d=5; L/10 Pl. Mirror RAL; D=31.5; d=5; L/2 Pl. Mirror RAL; D=31.5; d=5; L/10 Pl. Mirror RAL; D=40; d=8; L/2 Pl. Mirror RAL; D=40; d=8; L/10 Pl. Mirror RAL; D=50; d=5; 1L Pl. Mirror RAL; D=50; d=10; L/10 Pl. Mirror RAL; D=63; d=10; L/10 Pl. Mirror RAL; D=80; d=12.5; 2L Pl. Mirror RAL; D=80; d=12.5; L/10 Pl. Mirror RAL-UV; D=6; d=1; L/4 Pl. Mirror RAL-UV; D=10; d=2; L/4 Pl. Mirror RAL-UV; D=10; d=2; L/10 Pl. Mirror RAL-UV; D=12.7; d=2.5; L/4 Pl. Mirror RAL-UV; D=12.7; d=2.5; L/10 Pl. Mirror RAL-UV; D=12.7; d=5; L/10 Pl. Mirror RAL-UV; D=18; d=4; L/10 Pl. Mirror RAL-UV; D=22.2; d=4; L/2; Pl. Mirror RAL-UV; D=25.4; d=5; L/2 Pl. Mirror RAL-UV; D=25.4; d=5; L/10 Pl. Mirror RAL-UV; D=31.5; d=5; L/2 Pl. Mirror RAL-UV; D=40; d=8; L/10 Pl. Mirror RAL-UV; D=50; d=10; L/10 Pl. Mirror RAL-UV; D=63; d=10; L/10
Shape Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular
Optic Size Ø 6.0 mm Ø 10.0 mm Ø 10.0 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 18.0 mm Ø 18.0 mm Ø 21.0 mm Ø 22.2 mm Ø 22.2 mm Ø 25.4 mm Ø 25.4 mm Ø 31.5 mm Ø 31.5 mm Ø 40.0 mm Ø 40.0 mm Ø 50.0 mm Ø 50.0 mm Ø 63.0 mm Ø 80.0 mm Ø 80.0 mm Ø 6.0 mm Ø 10.0 mm Ø 10.0 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 18.0 mm Ø 22.2 mm Ø 25.4 mm Ø 25.4 mm Ø 31.5 mm Ø 40.0 mm Ø 50.0 mm Ø 63.0 mm
Optic Center Thickness 1.0 mm 2.0 mm 2.0 mm 2.5 mm 2.5 mm 5.0 mm 4.0 mm 4.0 mm 4.0 mm 4.0 mm 4.0 mm 5.0 mm 5.0 mm 5.0 mm 5.0 mm 8.0 mm 8.0 mm 5.0 mm 10.0 mm 10.0 mm 12.5 mm 12.5 mm 1.0 mm 2.0 mm 2.0 mm 2.5 mm 2.5 mm 5.0 mm 4.0 mm 4.0 mm 5.0 mm 5.0 mm 5.0 mm 8.0 mm 10.0 mm 10.0 mm
Wavelength Range 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm
Tolerance of optic size - 0.05 mm - 0.06 mm - 0.06 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.14 mm - 0.14 mm - 0.14 mm - 0.05 mm - 0.06 mm - 0.06 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.14 mm
Center thickness tolerance ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm
Coating RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm
Flatness (λ) 1/4 1/4 1/10 1/4 1/10 1/10 1/2 1/10 1/4 1/2 1/10 1/2 1/10 1/2 1/10 1/2 1/10 1 1/10 1/10 2 1/10 1/4 1/4 1/10 1/4 1/10 1/10 1/10 1/2 1/2 1/10 1/2 1/10 1/10 1/10
Angle of Incidence (AOI) 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg
Coating Specification Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm

  • Standard aluminum mirrors for the spectral ranges VIS to IR up to 10 µm or UV to 3 µm, respectively

  • High reflection within a broad spectral and angle-of-incidence range

  • Protected by an SiO2 overcoating (RAL) or MgF2 for the UV-region (RAL UV) prevents surface degradation, extending mirror lifetime and reducing maintenance

  • Low expansion material, minimizing thermal distortion and maintaining precise optical performance under temperature changes

  • RAL-UV: Guaranteed reflection > 85 % in the range of 230 nm ≤ λ ≤ 400 nm, > 88 % at λ0 = 300 nm for AOI = 45°, unpolarized

  • RAL-UV: Damage threshold H∞ > 200 mJ/cm2 at 193 nm with 30 ns laser pulses (s-on-1) at 10 Hz

  • RAL VIS: Guaranteed reflection > 85 % in the range of 400 nm ≤ λ ≤ 700 nm for AOI = 45°, unpolarized

Product Pl. Mirror RAL; D=6; d=1; L/4 Pl. Mirror RAL; D=10; d=2; L/4 Pl. Mirror RAL; D=10; d=2; L/10 Pl. Mirror RAL; D=12.7; d=2.5; L/4 Pl. Mirror RAL; D=12.7; d=2.5; L/10 Pl. Mirror RAL; D=12.7; d=5; L/10 Pl. Mirror RAL; D=18; d=4; L/2 Pl. Mirror RAL; D=18; d=4; L/10 Pl. Mirror RAL; D=21; d=4; L/4 Pl. Mirror RAL; D=22.2; d=4; L/2 Pl. Mirror RAL; D=22.2; d=4; L/10 Pl. Mirror RAL; D=25.4; d=5; L/2 Pl. Mirror RAL; D=25.4; d=5; L/10 Pl. Mirror RAL; D=31.5; d=5; L/2 Pl. Mirror RAL; D=31.5; d=5; L/10 Pl. Mirror RAL; D=40; d=8; L/2 Pl. Mirror RAL; D=40; d=8; L/10 Pl. Mirror RAL; D=50; d=5; 1L Pl. Mirror RAL; D=50; d=10; L/10 Pl. Mirror RAL; D=63; d=10; L/10 Pl. Mirror RAL; D=80; d=12.5; 2L Pl. Mirror RAL; D=80; d=12.5; L/10 Pl. Mirror RAL-UV; D=6; d=1; L/4 Pl. Mirror RAL-UV; D=10; d=2; L/4 Pl. Mirror RAL-UV; D=10; d=2; L/10 Pl. Mirror RAL-UV; D=12.7; d=2.5; L/4 Pl. Mirror RAL-UV; D=12.7; d=2.5; L/10 Pl. Mirror RAL-UV; D=12.7; d=5; L/10 Pl. Mirror RAL-UV; D=18; d=4; L/10 Pl. Mirror RAL-UV; D=22.2; d=4; L/2; Pl. Mirror RAL-UV; D=25.4; d=5; L/2 Pl. Mirror RAL-UV; D=25.4; d=5; L/10 Pl. Mirror RAL-UV; D=31.5; d=5; L/2 Pl. Mirror RAL-UV; D=40; d=8; L/10 Pl. Mirror RAL-UV; D=50; d=10; L/10 Pl. Mirror RAL-UV; D=63; d=10; L/10
Shape Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular Circular
Optic Size Ø 6.0 mm Ø 10.0 mm Ø 10.0 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 18.0 mm Ø 18.0 mm Ø 21.0 mm Ø 22.2 mm Ø 22.2 mm Ø 25.4 mm Ø 25.4 mm Ø 31.5 mm Ø 31.5 mm Ø 40.0 mm Ø 40.0 mm Ø 50.0 mm Ø 50.0 mm Ø 63.0 mm Ø 80.0 mm Ø 80.0 mm Ø 6.0 mm Ø 10.0 mm Ø 10.0 mm Ø 12.7 mm Ø 12.7 mm Ø 12.7 mm Ø 18.0 mm Ø 22.2 mm Ø 25.4 mm Ø 25.4 mm Ø 31.5 mm Ø 40.0 mm Ø 50.0 mm Ø 63.0 mm
Optic Center Thickness 1.0 mm 2.0 mm 2.0 mm 2.5 mm 2.5 mm 5.0 mm 4.0 mm 4.0 mm 4.0 mm 4.0 mm 4.0 mm 5.0 mm 5.0 mm 5.0 mm 5.0 mm 8.0 mm 8.0 mm 5.0 mm 10.0 mm 10.0 mm 12.5 mm 12.5 mm 1.0 mm 2.0 mm 2.0 mm 2.5 mm 2.5 mm 5.0 mm 4.0 mm 4.0 mm 5.0 mm 5.0 mm 5.0 mm 8.0 mm 10.0 mm 10.0 mm
Wavelength Range 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 400.0 - 700.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm 230.0 - 400.0 nm
Tolerance of optic size - 0.05 mm - 0.06 mm - 0.06 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.14 mm - 0.14 mm - 0.14 mm - 0.05 mm - 0.06 mm - 0.06 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.08 mm - 0.1 mm - 0.1 mm - 0.1 mm - 0.12 mm - 0.12 mm - 0.12 mm - 0.14 mm
Center thickness tolerance ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm ± 0.2 mm
Coating RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL-Coating 380 nm - 10 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm RAL UV-Coating 220 nm - 3 µm
Flatness (λ) 1/4 1/4 1/10 1/4 1/10 1/10 1/2 1/10 1/4 1/2 1/10 1/2 1/10 1/2 1/10 1/2 1/10 1 1/10 1/10 2 1/10 1/4 1/4 1/10 1/4 1/10 1/10 1/10 1/2 1/2 1/10 1/2 1/10 1/10 1/10
Angle of Incidence (AOI) 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg 45 deg
Coating Specification Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @400-700 nm Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm 		Runpol>85% @230-400 nm
Runpol>88% @300 nm

  • Standard aluminum mirrors for the spectral ranges VIS to IR up to 10 µm or UV to 3 µm, respectively

  • High reflection within a broad spectral and angle-of-incidence range

  • Protected by an SiO2 overcoating (RAL) or MgF2 for the UV-region (RAL UV) prevents surface degradation, extending mirror lifetime and reducing maintenance

  • Low expansion material, minimizing thermal distortion and maintaining precise optical performance under temperature changes

  • RAL-UV: Guaranteed reflection > 85 % in the range of 230 nm ≤ λ ≤ 400 nm, > 88 % at λ0 = 300 nm for AOI = 45°, unpolarized

  • RAL-UV: Damage threshold H∞ > 200 mJ/cm2 at 193 nm with 30 ns laser pulses (s-on-1) at 10 Hz

  • RAL VIS: Guaranteed reflection > 85 % in the range of 400 nm ≤ λ ≤ 700 nm for AOI = 45°, unpolarized

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