红外衰减片，红外中性密度滤光片（IR Neutral Density Filters），是一种可以在红外光谱区间降低光强度的镜片，通过基板上的金属合金涂层获得光密度再采用吸收和反射的原理以此降低光强度，而且不会改变光的原本色彩平衡或波长
所属品牌： Andover
负责人：包工
联系电话：13417596712 电子邮箱：cxbao@welloptics.cn
红外中性密度滤光片，更高线性度衰减、波长覆盖2000-14000nm
红外衰减片，红外中性密度滤光片（IR Neutral Density Filters），是一种可以在红外光谱区间降低光强度的镜片，通过基板上的金属合金涂层获得光密度再采用吸收和反射的原理以此降低光强度，而且不会改变光的原本色彩平衡或波长，ndover红外中性密度滤光片都会以相同的比率减少其能量。因此，Andover红外ND滤光片具有出色的光谱中性特性。
红外ND滤波片的标准品：
|
型号 |
波长范围（nm） |
尺寸（mm） |
厚度（mm） |
Scratch-Dig |
OD |
平面度 |
|
030FNIR-12.5 |
2000-14000 |
12.5+0/-0.2 |
1.0±0.2 |
80/50 |
0.3 |
5 or better at of Interest |
|
030FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.3 |
5 or better at of Interest |
|
030FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.3 |
5 or better at of Interest |
|
030FNIR-BBAR-25 |
2000-14000 |
12.5 +0/-0.2 |
1.0±0.2 |
80/50 |
0.3 |
5 or better at of Interest |
|
030FNIR-BBAR-50 |
2000-14000 |
25.0 +0/-0.2 |
1.0±-0.2 |
80/50 |
0.3 |
5 or better at of Interest |
|
050FNIR-12.5 |
2000-14000 |
12.5 +0/-0.2 |
1.0±0.2 |
80/50 |
0.5 |
5 or better at of Interest |
|
050FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.5 |
5 or better at of Interest |
|
050FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.5 |
5 or better at of Interest |
|
050FNIR-BBAR-25 |
5200-7000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.5 |
≤ 5 waves at 5800nm |
|
050FNIR-BBAR-50 |
5200-7000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.5 |
≤ 5 waves at 5800nm |
|
060FNIR-12.5 |
2000-14000 |
12.5 +0/-0.2 |
1.0±0.2 |
80/50 |
0.6 |
≤ 5 waves at 5800nm |
|
060FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.6 |
≤ 5 waves at 5800nm |
|
060FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.6 |
≤ 5 waves at 5800nm |
|
070FNIR-12.5 |
2000-14000 |
12.5 +0/-0.2 |
1.0±0.2 |
80/50 |
0.7 |
5 or better at of Interest |
|
070FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.7 |
5 or better at of Interest |
|
070FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.7 |
5 or better at of Interest |
|
080FNIR-12.5 |
2000-14000 |
12.5 +0/-0.2 |
1.0±0.2 |
80/50 |
0.8 |
5 or better at of Interest |
|
080FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.8 |
5 or better at of Interest |
|
080FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.8 |
5 or better at of Interest |
|
090FNIR-12.5 |
2000-14000 |
12.5 +0/-0.2 |
1.0±0.2 |
80/50 |
0.9 |
5 or better at of Interest |
|
090FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.9 |
5 or better at of Interest |
|
090FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
0.9 |
5 or better at of Interest |
|
100FNIR-12.5 |
2000-14000 |
12.5+0/-0.2 |
1.0±0.2 |
80/50 |
1.0 |
≤ 5 waves at 5800nm |
|
100FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.0 |
≤ 5 waves at 5800nm |
|
100FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.0 |
≤ 5 waves at 5800nm |
|
100FNIR-BBAR-25 |
5200-7000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.0 |
≤ 5 waves at 5800nm |
|
100FNIR-BBAR-50 |
5200-7000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.0 |
≤ 5 waves at 5800nm |
|
130FNIR-12.5 |
2000-14000 |
12.5+0/-0.2 |
1.0±0.2 |
80/50 |
1.3 |
≤ 5 waves at 5800nm |
|
130FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.3 |
≤ 5 waves at 5800nm |
|
130FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.3 |
≤ 5 waves at 5800nm |
|
150FNIR-12.5 |
2000-14000 |
12.5+0/-0.2 |
1.0±0.2 |
80/50 |
1.5 |
≤ 5 waves at 5800nm |
|
150FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.5 |
≤ 5 waves at 5800nm |
|
150FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.5 |
≤ 5 waves at 5800nm |
|
150FNIR-BBAR-25 |
5200-7000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.5 |
≤ 5 waves at 5800nm |
|
150FNIR-BBAR-50 |
5200-7000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
1.5 |
≤ 5 waves at 5800nm |
|
200FNIR-12.5 |
2000-14000 |
12.5+0/-0.2 |
1.0±0.2 |
80/50 |
2.0 |
≤ 5 waves at 5800nm |
|
200FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
2.0 |
≤ 5 waves at 5800nm |
|
200FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
2.0 |
≤ 5 waves at 5800nm |
|
200FNIR-BBAR-25 |
5200-7000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
2.0 |
≤ 5 waves at 5800nm |
|
200FNIR-BBAR-25 |
5200-7000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
2.0 |
≤ 5 waves at 5800nm |
|
250FNIR-12.5 |
2000-14000 |
12.5+0/-0.2 |
1.0±0.2 |
80/50 |
2.5 |
≤ 5 waves at 5800nm |
|
250FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
2.5 |
≤ 5 waves at 5800nm |
|
250FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
2.5 |
≤ 5 waves at 5800nm |
|
300FNIR-12.5 |
2000-14000 |
12.5+0/-0.2 |
1.0±0.2 |
80/50 |
3.0 |
≤ 5 waves at 5800nm |
|
300FNIR-25 |
2000-14000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
3.0 |
≤ 5 waves at 5800nm |
|
300FNIR-50 |
2000-14000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
3.0 |
≤ 5 waves at 5800nm |
|
300FNIR-BBAR-25 |
5200-7000 |
25.0 +0/-0.2 |
1.0±0.2 |
80/50 |
3.0 |
5 or better at of Interest |
|
300FNIR-BBAR-50 |
5200-7000 |
50.0 +0/-0.2 |
1.0±0.2 |
80/50 |
3.0 |
5 or better at of Interest |
红外中性密度滤波片在2-14μm的透过率曲线
Andover中性密度滤波片提供三种标准尺寸的滤波片：12.5mm、25mm和50mm直径，具有统一的中心厚度1mm。红外ND滤波片的基材是锗，有效孔径为光学直径（Outer Diameter, OD）的90%。Andover中性密度滤波片的平整度<5 waves per 25mm，这是一个比较严格的平整度要求，表明该红外中性密度滤光片在其表面上的任意25mm长度内，最高点与最低点之间的高度差不超过5个光波长度。Andover红外ND滤光片的平行度为10
arc minutes or better，即小于10弧分，偏离角度不会超过0.1667度，并且实际性能很可能会更加接近完美平行。此外Andover还可以根据客户的需求定制不同尺寸、不同光学特性的IR ND滤光片。
Andover红外衰减片的主要特点：
-在宽光谱范围内提供线性度更高的衰减效果
-提供卓越的耐用性
-可定制基底
-有标准和定制波长可供选择
Andover红外ND滤光片的主要应用：
-热成像
-医疗成像
-红外测试台
-红外摄影
