Name: 75mm Dia., 2mm Thick, NIR I AR Coated Sapphire Window
Brand: TECHSPEC
SKU: 18-949
Price: NT$27,060

75mm Dia., 2mm Thick, NIR I AR Coated Sapphire Window

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 (%):

≥90

Clear Aperture CA (mm):

67.50

Diameter (mm):

75.00 ±0.125

Thickness (mm):

2.00 ±0.05

Coating:

NIR I (600-1050nm)

Coating Specification:

R_avg ≤0.5% @ 600 - 1050nm

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):

≤3.5

Poisson's Ratio:

0.27

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

Sapphire (Al₂O₃)

Surface Flatness:

2λ (typical)

Surface Quality:

80-50

Type:

Protective Window

Wavelength Range (nm):

600 - 1050

Young's Modulus (GPa):

435

Regulatory Compliance

RoHS:

Compliant

產品系列說明

具備極高的表面硬度與化學品抵抗力
穿透波長的範圍涵蓋紫外線至中波紅外
較標準玻璃窗口片厚度更薄、強度更大

TECHSPEC®藍寶石窗口片採用單晶體藍寶石製造，由於具備極高的表面硬度、高導熱性、高介電常數以及對常見化學酸與鹼的抵抗力，因此非常適用於需求嚴苛的應用 (例如雷射系統)。藍寶石是硬度位居第二 (僅次於鑽石) 的晶體，由於結構強度很高，因此製造藍寶石窗口片時，厚度可較其他常見電介質窗口片薄得多，而穿透能力更優。從化學角度而言，藍寶石是單晶體氧化鋁 (Al₂O₃)，在穿透0.33 - 5.5μm的光時很有用。

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