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

76.2mm Dia. λ/20 ZERODUR® Optical Flat

Stock #48-117-000
Qty 1-10
£446.25
Qty 11+
£402.05
Volume Pricing
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Surface Flatness:
λ/20
Abbe Number (vd):
56.2
Clear Aperture CA (mm):
68.60
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
0.1
Diameter (mm):
76.20 +0.0/-0.51
Diameter (inches):
3.00 +0.0/-0.02
Thickness (inches):
0.75 ±0.06
Color:
Yellow Tint
Construction:
Single Surface
Density (g/cm3):
2.53
Index of Refraction nd:
1.542
Knoop Hardness (kg/mm2):
620
Parallelism (arcmin):
≤3
Poisson's Ratio:
0.24
Thickness (mm):
19.05 ±1.53
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Surface Quality:
60-40
Type:
Interferometry Window
Young's Modulus (GPa):
90.3
Bevel:
Protective as needed

Regulatory Compliance

RoHS 2015:
Reach 211:

Product Description

λ/20 flats include a certificate of calibration.
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