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

12.5mm Square Uncoated, B270 Window

Name: 12.5mm Square Uncoated, B270 Window
Brand: TECHSPEC
SKU: 64-085
Price: ₹2,654

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Stock #64-085 10 to 12 days

- +

₹1,327 ~~₹2,654~~

Qty 1-5
₹1,327 ~~₹2,654~~

Qty 6+
₹1,066 ~~₹2,132~~

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Imaging Lens Selector

Abbe Number (v_d):

58.3

Bevel:

Protective as needed

Clear Aperture CA (mm):

11.25 x 11.25

Dimensions (mm):

12.50 x 12.50

Thickness (mm):

2.00

Coating:

Uncoated

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

9.4 (+20 to +300°C)

Density (g/cm³):

2.56

Edges:

Fine Ground

Index of Refraction n_d:

1.523

Knoop Hardness (kg/mm²):

500

Poisson's Ratio:

0.22

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

B270

Surface Flatness (P-V):

1λ

Surface Quality:

60-40

Type:

Protective Window

Wavelength Range (nm):

360 - 2700

Young's Modulus (GPa):

71.5

Length (mm):

12.50

Width (mm):

12.50

Regulatory Compliance

RoHS 2015:

Compliant

Certificate of Conformance:

View

Reach 235:

Compliant

Product Family Description

Large Selection of Sizes
Available Uncoated, MgF2, or VIS-NIR Anti-Reflection (AR) Coated
Custom Sizes Available for Volume OEM Requirements

TECHSPEC® B270 Windows offer a high transmission from the visible to the near-infrared (NIR). They have a similar refractive index to N-BK7 while being more cost-effective. These windows are often used as a protective element due to their high solarization stability and chemical resistance, making them ideal for standard window applications. TECHSPEC® B270 Windows are available either uncoated or coated with a MgF2 or VIS-NIR Anti-Reflection (AR) Coating. Both circular and square options are offered in various sizes, and custom sizes and coatings are available for OEM applications.