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Metallic Mirrors

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Shanghai Optics is a custom optics manufacturer with over 55 years of optics manufacturing experience. We produce high precision Metalized Mirrors according to customers’ specifications.

Aluminum has a high reflectance over the entire visible and near infrared spectrum. It is simple to deposit as a thin film, making it the ideal choice for most non-critical applications. The aluminum is over coated with a single layer of MgF2 to make it considerably more durable than bare aluminum.

There are three degrees of flatness: l/4, l/10 and l/20. The l/4 and l/10 mirrors are deposited on BK7 substrates but the l/20 mirrors use synthetic quartz resulting in significantly better thermal stability.
A broad selection of sizes is offered as standard. Other sizes can be supplied on request.  Mirrors up to 1 inch in diameter have a ground rear surface but all other mirrors are polished on the rear face.

Key Features

  • High reflectance over entire visible and NIR spectrum
  • Aluminum overcoated with MgF2 for high durability
  • Ideal for non-critical applications
  • Available with l/4 surface flatness
  • Synthetic quartz and Zerodur available for high thermal stability
  • Standard diameters from 5.0 to 152.4mm

Factory Standard 

  • Surface flatness: Lambda/4
  • Diameter: +0, -0.2mm
  • Surface quality: 40-20
  • Parallelism: 90% diameter
  • Bevel: 0.2mmx45° typical
  • Laser damage threshold: 0.4J/cm2 for 532nm @10ns pulse (measured)
  • Durability: to MIl-C-675
  • Reflectance: R>88% (350-2000nm)

Contact us for manufacturing limit or custom specifications.

 

Metallized Mirrors Round

All measurements in mm
Part Number Flatness Diameter, D Diameter, D Thickness Material
(Inches) (mm) (mm)
/4 0.2 5 3 BK7
/4 0.39 10 3 BK7
/4 0.5 12.7 5 BK7
/4 0.79 20 5 BK7
/4 0.98 25 5 BK7
/4 1 25.4 5 BK7
/4 1.18 30 5 BK7
/4 1.57 40 6 BK7
/4 1.97 50 8 BK7
/4 2 50.8 8 BK7
/4 3 76.2 12 BK7
/4 4 101.6 15 BK7
/4 6 152.4 20 BK7
/10 0.2 5 3 BK7
/10 0.39 10 3 BK7
/10 0.5 12.7 5 BK7
/10 0.59 15 5 BK7
/10 0.79 20 5 BK7
/10 0.98 20 5 BK7
/10 1 25.4 5 BK7
/10 1.18 30 5 BK7
/10 1.57 40 6 BK7
/10 2 50.8 8 BK7
/10 3 76.2 12 BK7
/10 4 101.6 17 Zerodur®
/10 6 152.4 25 Zerodur®
/10 0.5 12.7 6 SFS
/10 1 25.4 6 SFS
/10 2 50.8 10 SFS

Metallized Mirrors, Square & Rectangular

All measurements in mm
Part Number Flatness Dimensions Thickness, T Material
(Inches) (mm) (mm)
a x b a x b
l/4 0.39 x 0.59 10.0 x 15.0 5 BK7
l/4 0.50 x 0.50 12.7 x 12.7 3 BK7
l/4 0.79 x 0.79 20.0 x 20.0 5 BK7
l/4 0.98 x 0.98 25.0 x 25.0 5 BK7
l/4 0.98 x 1.38 25.0 x 35.0 5 BK7
l/4 1.18 x 1.18 30.0 x 30.0 5 BK7
l/4 1.57 x 1.57 40.0 x 40.0 6 BK7
l/4 1.57 x 1.97 40.0 x 50.0 8 BK7
l/4 1.97 x 1.97 50.0 x 50.0 8 BK7
l/4 3.94 x 3.94 100.0 x 100.0 15 BK7
l/10 0.39 x 0.39 10.0 x 10.0 3 BK7
l/10 0.39 x 0.59 10.0 x 15.0 5 BK7
l/10 0.50 x 0.50 12.7 x 12.7 3 BK7
l/10 0.59 x 0.59 15.0 x 15.0 3 BK7
l/10 0.79 x 0.79 20.0 x 20.0 5 BK7
l/10 0.98 x 0.98 25.0 x 25.0 5 BK7
l/10 0.98 x 1.38 25.0 x 35.0 5 BK7
l/10 1.18 x 1.18 30.0 x 30.0 5 BK7
l/10 1.57 x 1.97 40.0 x 50.0 8 BK7
l/10 1.97 x 1.97 50.0 x 50.0 8 BK7
l/10 3.94 x 3.94 100.0 x 100.0 15 BK7
l/20 0.98 x 0.98 25.0 x 25.0 6 Fused Silica
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