Name: 12.7mm Dia., 1mm Thick, Uncoated, ISP Optics Sapphire Window | AL-W-12-1
Brand: ISP Optics
SKU: 19-715
Price: ₹8,613.00

12.7mm Dia., 1mm Thick, Uncoated, ISP Optics Sapphire Window | AL-W-12-1

Stock #19-715 10 to 12 days

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₹8,613.00

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₹8,613.00

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Abbe Number (v_d):

72.24

Axis Orientation:

Random

Bevel:

Protective as needed

Birefringence (n_o-n_e):

0.008 for Visible Light Orthogonal to Optical Axis

Clear Aperture (%):

Clear Aperture CA (mm):

10.80

Diameter (mm):

12.70 +0.00/-0.13

Thickness (mm):

1.00 ±0.13

Coating:

Uncoated

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

8.8

Density (g/cm³):

3.97

Edges:

Fine Ground

Index of Refraction n_d:

1.77

Knoop Hardness (kg/mm²):

1900

Parallelism (arcmin):

Poisson's Ratio:

0.27

Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More

Sapphire (Al₂O₃)

Surface Flatness (P-V):

2λ (typical)

Surface Quality:

60-40

Type:

Protective Window

Wavelength Range (nm):

330 - 5500

Young's Modulus (GPa):

435

Model Number:

AL-W-12-1

Regulatory Compliance

RoHS:

Compliant

Certificate of Conformance:

View

Product Family Description

High Corrosion Resistance and Thermal Stability
Higher Durability than Glass Windows
Transmission from 0.33 – 5.5µm

ISP Optics Sapphire Windows are highly durable and transmissive protective windows that are ideal for harsh environments. Sapphire is chemically inert, insoluble in water, and resistant to common acids and alkalis. Chemically, sapphire is single crystal aluminum oxide (Al₂O₃) and is useful in a transmission range from 0.33 – 5.5µm when uncoated. ISP Optics Sapphire Windows feature a Knoop Hardness of 1900 and are are resistant to scratches, digs, and fractures that might otherwise weaken fused silica substrates. These windows are often used in applications with high temperatures and pressure such as viewports for vacuum or plasma chambers.