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See all 4 Products in Family

TECHSPEC^® components are designed, specified, or manufactured by Edmund Optics. Learn More
25mm Diameter Uncoated, Metalized Sapphire Window

Stock #66-912

~~$125.00~~ $62.50

Qty 1
~~$125.00~~ $62.50

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eDrawing: eprt IGES PDF Drawing STEP: step

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Abbe Number (v_d):

72.24

Clear Aperture (%):

≥90

Diameter (mm):

25.00 ±0.10

Thickness (mm):

2.30

Coating:

Uncoated

Coefficient of Thermal Expansion CTE (10^-6/°C):

8.8

Density (g/cm³):

3.97

Edges:

Chrome, Nickel, and Gold

Index of Refraction n_d:

1.77

Parallelism (arcmin):

≤3.5

Poisson's Ratio:

0.27

Solderability:

MIL-STD-883

Substrate:

Sapphire (Al₂O₃)

Surface Flatness:

2λ

Surface Quality:

80-50

Thickness Tolerance (mm):

±0.25

Type:

Specialty Window

Wavelength Range (μm):

0.2 - 5.5

Wavelength Range (nm):

200 - 5500

Young's Modulus (GPa):

435

Knoop Hardness (GPa):

1900

Regulatory Compliance

RoHS:

Compliant

Product Family Description

Precision Sapphire Substrate
Solderable Metalized Edge
Greater than 80% Transmission from 0.4 - 5.5μm

TECHSPEC® Metalized Sapphire Windows are created by applying thin layers of chrome, nickel and gold around the edge of a sapphire window. This metalized edge creates a surface that can be soldered or bonded directly into your opto-mechanical assembly allowing you to create a hermetic seal. Hermetically sealed optics are used in a variety of applications ranging from infrared imaging systems to medical devices. The chrome, nickel and gold metalized layers meet the MIL-STD-883 solderability standard. For OEM requirements, custom edge metalization of other IR materials such as germanium and zinc sulfide is available. Please contact our Sales Department for details.