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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

4" Dia. Protected Aluminum, λ/20 Flat Fused Silica

Optical Flats 1 Optical Flats 3
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Stock #47-574-522 3-5 days
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S$1,357.50
Qty 1-5
S$1,357.50
Qty 6+
S$1,221.75
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Surface Flatness (P-V):
λ/20 (measured before coating)
Back Surface:
Commercial Polish
Surface Quality:
60-40
Diameter (mm):
101.60 +0.0/-1.02
Diameter Tolerance (inches):
+0.0/-0.04
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Coating Specification:
Ravg >85% @ 400 - 700nm
Ravg >90% @ 400 - 2000nm
Coating:
Protected Aluminum (400-2000nm)
Coating Type:
Metal
Clear Aperture CA (mm):
91.44
Note:
Flatness is specified as Peak to Valley
Thickness (mm):
19.10 ±1.5
Thickness Tolerance (mm):
±1.5
Type:
Flat Mirror
Wavelength Range (μm):
0.4 - 2
Wavelength Range (nm):
400 - 2000
Damage Threshold, Reference: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
0.3 J/cm2 @ 532nm & 1064nm, 10ns

Regulatory Compliance

RoHS 2015:
Compliant
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Certificate of Conformance:
View
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Reach 233:
Compliant
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Product Family Description

  • Fused Silica and ZERODUR® Substrates
  • λ/10 and λ/20 Surface Flatness
  • Variety of Coating Options Offered

TECHSPEC® Precision Optical Flats are ideal for a variety of applications including interferometry, imaging systems, laser applications, optical path folding, and autocollimation. These mirrors are available in a variety of coating and substrate options, along with surface flatness options of λ/10 and λ/20. The first substrate option ZERODUR®, a yellow tinted glass ceramic, features an extremely low coefficient of thermal expansion and is the ideal choice for applications where temperature fluctuation is a concern. The second option, Fused Silica, is optically clear and features excellent resistance to abrasion and high durability, making it the best choice for applications in harsh environments.

TECHSPEC® λ/10 and λ/20 Precision Optical Flats are available for testing and measurement applications.

Note: Surface flatness specifications are measured before coating.