Abbe Number (v_d):

67.8

Bevel:

Protective as needed

Clear Aperture (%):

80

Clear Aperture CA (mm):

20.00

Diameter (mm):

25.00 +0.00/-0.20

Thickness (mm):

3.00 ±0.10

Coating:

Hardened VIS-NIR (400-1100nm)

Coating Specification:

R_avg <1.5% @ 400 - 1100nm
R_abs <2.0% @ 400 - 1100nm

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

0.52 (+5 to +35°C)
0.57 (0 to +200°C)
0.48 (-100 to +200°C)

Density (g/cm³):

2.20

Edges:

Fine Ground

Index of Refraction n_d:

1.458

Knoop Hardness (kg/mm²):

522

Parallelism (arcsec):

<5

Poisson's Ratio:

0.16

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

Fused Silica

Surface Quality:

20-10

Transmitted Wavefront, P-V:

λ/10

Type:

Protective Window

Wavelength Range (nm):

400 - 1100

Young's Modulus (GPa):

73

Coating Abrasion:

Severe, per MIL-C-675C Paragraph 4.5.10

Coating Adhesion:

Per MIL-M-13508C Paragraph 4.4.6

Coating Humidity:

≥24 Hours per MIL-C-675C paragraph 4.5.8

Coating Salt Solubility:

≥24 Hours Immersion per MIL-C-675C paragraph 4.5.7

Coating Salt Spray:

≥24 Hours per MIL-C-675C paragraph 4.5.9

Coating Temperature (°F):

-80 to +160 per MIL-M-13508C Paragraph 4.4.4

25mm Dia., 3mm Thick, 400-1100nm HDAR Coated Fused Silica Window

Regulatory Compliance

產品系列說明