Please note: Due to maintenance the shop will be unavailable on Tuesday, November 30, from 06:00 AM until 08:00 AM (CEST)

IRG 22

IRG 22

IRG 22在SWIR,MWIR和LWIR波段具有出色的透射率,并且在IRG系列中其NIR波段透射率最高,透射起始波长低至0.7μm。

低dn / dT和低色散等物理特性,使光学工程师可以设计出没有热散焦效应的颜色校正光学系统。

此外,IRG 22可以通过常规的研磨和抛光,单点金刚石车削或精密模压方式加工,以支持从小批量到大批量的零件制造。

IR characteristics
成分 Ge33As12Se55
密度 4.41 g/cm3
热膨胀系数(20°C-100°C) 12.5·10-6/K
转变温度 368°C
热变化 dn/dT (1 µm) 94.7·10-6/K
热变化 dn/dT (5 µm) 67.6·10-6/K
热变化 dn/dT (10 µm) 67.1·10-6/K
折射率(10um) 2.4968
表面质量 60/40双面抛光
表面平整度 P-V ≤ 5个波长@632.8nm
倒边 安全倒边
玻璃类型
物品编号 直径
厚度
重量
Wavelength
[µm]
Transmission
(10 mm)
Transmission
(2 mm)
Extinction
[cm-1]
0.8 52.2 87.8 0.650
1.0 91.4 98.2 0.090
1.5 96.7 99.3 0.034
2.0 97.5 99.5 0.026
2.5 97.5 99.5 0.025
3.0 98.3 99.7 0.017
3.5 98.5 99.7 0.015
4.0 98.7 99.7 0.013
4.5 96.3 99.3 0.037
5.0 97.0 99.4 0.031
5.5 99.5 99.9 0.005
6.0 99.7 99.9 0.003
6.5 99.7 99.9 0.003
7.0 99.7 99.9 0.003
7.5 99.2 99.8 0.008
8.0 95.2 99.0 0.049
Wavelength
[µm]
Transmission
(10 mm)
Transmission
(2 mm)
Extinction
[cm-1]
8.5 98.5 99.7 0.015
9.0 98.8 99.8 0.012
9.5 98.7 99.7 0.013
10.0 98.8 99.8 0.012
10.5 97.8 99.6 0.022
11.0 93.7 98.7 0.065
11.5 78.0 95.2 0.248
12.0 40.2 83.4 0.910
12.5 15.8 69.2 1.844
13.0 16.9 70.1 1.779
13.5 43.0 84.4 0.845
14.0 65.2 91.8 0.428
14.5 70.3 93.2 0.353
15.0 64.3 91.5 0.442
15.5 49.9 87.0 0.696
色散公示常数
B1 2.4834
B2 2.8203
B3 0.9773
C1 0.0000
C2 0.1352
C3 1,420.7000
D0 6.41·10-5
E0 1.68·10-7
λTK 9.96·10-1
Calculation Formula: Refractive index as a function of wavelength and temperature
Wavelength
[µm]
折射率
(@ 22 °C)
Δn abs/ΔT [10–6/K]
22 °C
1.0 2.5971 94.8
1.5 2.5462 69.1
2.0 2.5299 68.4
3.0 2.5182 68.0
4.0 2.5134 67.8
5.0 2.5104 67.7
6.0 2.5079 67.6
7.0 2.5054 67.5
8.0 2.5028 67.4
9.0 2.5000 67.3
10.0 2.4968 67.1
11.0 2.4933 67.0
12.0 2.4893 66.9
Wavelength
[µm]
热变化
[dn/dt]
1 µm 94.7·10-6/K
5 µm 67.6·10-6/K
10 µm 67.1·10-6/K