50mm Sq., 4mm Thick, VIS-NIR Coated λ/4 N-BK7 Window

Abbe Number (v_d):

64.17

Bevel:

Protective as needed

Clear Aperture (%):

Clear Aperture CA (mm):

45.00 x 45.00

Dimensions (mm):

50.00 x 50.00

Thickness (mm):

4.00 ±0.20

Coating:

VIS-NIR (400-1000nm)

Coating Specification:

R_abs ≤0.25% @ 880nm
R_avg ≤1.25% @ 400 - 870 nm
R_avg ≤1.25% @ 890 - 1000nm

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

7.1 (-30 to +70°C)
8.3 (+20 to +300°C)

Density (g/cm³):

2.51

Edges:

Fine Ground

Index of Refraction n_d:

1.516

Knoop Hardness (kg/mm²):

610

Parallelism (arcmin):

≤1

Poisson's Ratio:

0.206

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

N-BK7

Surface Flatness:

λ/4

Surface Quality:

60-40

Type:

Protective Window

Typical Energy Density Limit:

5 J/cm² @ 532nm, 10ns

Wavelength Range (nm):

400 - 1000

Young's Modulus (GPa):

Length (mm):

50.00

Width (mm):

50.00

Regulatory Compliance

RoHS 2015:

Compliant

Reach 211:

Compliant

產品系列說明

λ/4 的表面精度
提供廣波段抗反射鍍膜選項
提供客製鍍膜與尺寸以因應OEM量購需求
Also Available with Laser Line V-Coats

TECHSPEC® λ/4 N-BK7 精密窗口片非常適用於工業與低功率雷射應用。藉由精密公差設計，可以最大程度減少光束畸變與散射。廣波段鍍膜選項可延伸這些精密窗口片在可見光與近紅外光譜內的有效工作範圍。

50mm Sq., 4mm Thick, VIS-NIR Coated λ/4 N-BK7 Window

Regulatory Compliance

產品系列說明

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