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All Products / Optics / Optical Mirrors / Flat Mirrors / Precision Polished Metal Coatings / λ/20 First Surface Mirrors
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

40 x 40mm Protected Gold, λ/20 Mirror

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Stock #34-381 3-4 days
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Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
£63.11 £252.45
Qty 1-5
£63.11 £252.45
Qty 6+
£50.47 £201.88
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Surface Flatness (P-V):
λ/20 (flatness pre-coating)
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Back Surface:
Commercial Polish
Surface Quality:
20-10
Dimensions (mm):
40.0 x 40.0 +0.00/-0.20
Coating Specification:
Ravg >96% @ 700 - 2000nm
Ravg >96% @ 2000 - 10,000nm
Coating:
Protected Gold (700-10000nm)
Coating Type:
Metal
Clear Aperture (%):
90.00
Edges:
Ground, protective bevel as needed
Parallelism (arcsec):
30.00
Thickness (mm):
5.00
Type:
Flat Mirror
Wavelength Range (nm):
700 - 10000
Length (mm):
40.00
Width (mm):
40.00

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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REACH 241:
Compliant
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Product Family Description

  • Precision Fused Silica Substrate
  • 20-10 Surface Quality
  • Low Coefficient of Thermal Expansion

TECHSPEC® λ/20 First Surface Mirrors are polished to industry leading surface accuracy and quality specifications to minimize reflected wavefront error. These mirrors feature a precision fused silica substrate with a low coefficient of thermal expansion. Multiple coating options are available, allowing these mirrors to be integrated into applications spanning the visible through infrared spectra. TECHSPEC® λ/20 First Surface Mirrors are ideal for beam steering and reflection applications and are available in a variety of size, thickness, and coating options.

Note: Surface flatness is measured before coating.