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

25.4mm Dia. λ/10 ZERODUR® Optical Flat

Stock #32-195-000
Qty 1-10
C$168.75
Qty 11+
C$152.55
Volume Pricing
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Surface Flatness:
λ/10
Abbe Number (vd):
56.2
Clear Aperture CA (mm):
22.90
Coating:
Uncoated
Coefficient of Thermal Expansion CTE (10-6/°C):
0.1
Diameter (mm):
25.40 +0.0/-0.51
Diameter (inches):
1.00 +0.0/-0.02
Thickness (inches):
0.50 ±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):
12.70 ±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 Family Description

  • Sizes Ranging from ½" Diameter to 12" Diameter
  • Each λ/20 Flat 75mm and Larger Includes a Certificate of Calibration
  • Available with Standard Metallic Mirror Coatings: λ/10 and λ/20 Mirrors

Optical Flats are used as a reference (test plate) against which the flatness of an unknown surface may be compared. Each piece is precision polished by our master opticians and tested on a Zygo interferometer to insure the surface flatness. The secondary surfaces of our single surface flats are pitch polished to window quality for viewing the interference pattern. Each flat ships in a durable storage case for permanent protection. λ/20 flats that are 75mm or larger also include a certificate of calibration.

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