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Ultra-Broadband Metallic Mirrors

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Shanghai Optics is a custom optics manufacturer with over 55 years of optics manufacturing experience. We supply high precision Ultra-Broadband Metallic Mirrors according to customers’ specifications. These mirrors provide a high reflectance over a very broad spectral bandwidth. They are manufactured by coating first with a reflective metal film and then with a dielectric overcoat for protection and enhancement of the reflectivity.

Coatings offered include aluminum, silver and gold. Each has a different spectral characteristic as shown in the curves. Aluminum provides a good general purpose visible range mirror. Silver has a very high reflectance over the visible and near infra-red range and gold is the preferred coating for infra-red applications at wavelengths greater than 2 microns.

Key Features

  • High reflectance over a broad spectral range
  • Enhanced reflectance in the visible range
  • Effective over wide angles of incidence
  • Standard diameters from 12.7 to 50.4mm

Factory Standard

  • Surface flatness: Lambda/4
  • Diameter: +0, -0.2mm
  • Surface quality: 20-10
  • Parallelism: < 0.3arcmin Thickness: +0.1mm Clear aperture: >90% diameter
  • Bevel: 0.2mm x 45° typical
  • Material: BK7, grade A
  • Laser damage threshold: 0.5J/cm2 for 10ns pulse
  • Durability: to MIL-C-675

Contact us for manufacturing limit or custom specifications.

Ultra-Broadband Metallic Mirrors

Part Number Type Reflectance Wavelength Range Diameter, D Thickness, T
% (mm) (mm) (Inches) (mm)
033-4340 UV
Enhanced Aluminum
>85.0av 250-400 0.5 12.7 5
033-4350 UV
Enhanced Aluminum
>85.0av 250-400 0.75 19.1 5
033-4360 UV
Enhanced Aluminum
>85.0av 250-400 1 25.4 5
033-4370 UV
Enhanced Aluminum
>85.0av 250-400 2 50.8 8
033-4440 Enhanced Aluminum >94.0av 400-700 0.5 12.7 5
033-4450 Enhanced Aluminum >94.0av 400-700 0.75 19.1 5
033-4460 Enhanced Aluminum >94.0av 400-700 1 25.4 5
033-4470 Enhanced Aluminum >94.0av 400-700 2 50.8 8
033-4540 Enhanced Silver >96.0av 400-700 0.5 12.7 5
>97.5av 700-2000
033-4550 Enhanced Silver >96.0av 400-700 0.75 19.7 5
>97.5av 700-2000
033-4560 Enhanced Silver >96.0av 400-700 1 25.4 5
>97.5av 700-2000
033-4570 Enhanced Silver >96.0av 400-700 2 50.8 8
>97.5av 700-2000
033-4640 Protected Gold >96.0av 650-IR 0.5 12.7 5
033-4650 Protected Gold >96.0av 650-IR 0.75 19.1 5
033-4660 Protected Gold >96.0av 650-IR 1 7.7 5
033-4670 Protected Gold >96.0av 650-IR 2 25.4 8
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