Surface Flatness (P-V):

λ/20

Abbe Number (v_d):

67.8

Coating:

Uncoated

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)

Diameter (mm):

152.40 ±1.0

Thickness (mm):

25.40 ±2.0

Diameter (inches):

6.00 ±0.04

Thickness (inches):

1.00 ±0.08

Clear Aperture CA (mm):

137.20

Construction:

Dual Surface

Density (g/cm³):

2.20

Index of Refraction n_d:

1.458

Knoop Hardness (kg/mm²):

522

Parallelism (arcmin):

≤1

Poisson's Ratio:

0.16

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

Fused Silica (Corning 7980)

Surface Quality:

60-40

Type:

Interferometry Window

Wavelength Range (nm):

200 - 2200

Young's Modulus (GPa):

73

Bevel:

Protective as needed

Regulatory Compliance

RoHS 2015:

Compliant

Reach 211:

Compliant

Certificate of Conformance:

View

Product Description

λ/20 flats include a certificate of calibration.

產品系列說明

提供λ/10 與 λ/20 的表面平整度選項
每個 λ/20 尺寸76.2mm及以上的平面反射鏡均附有校準證書
延長接觸測量應用的使用壽命
可選用單面光學平面反射鏡

本雙面光學平板玻璃都經過了精密研磨和拋光處理，可達到所承諾的精度，因此反射鏡的兩面都可用於測試應用。反射鏡的兩面都經過Zygo干涉儀的測試與認證。每個光學平板玻璃出貨時都裝設於耐用的儲存箱之中，提供永久保護。而直徑76.2mm及以上的λ/20平面反射鏡都帶有校准證書。

6" Dia. λ/20 Fused Silica Dual Surface Flat

Regulatory Compliance

Product Description

產品系列說明