Andover红外中性密度滤光片，也称为Andover红外衰减片，主要用于减少红外光波段内光强度，保持光谱响应的平坦度，确保不同波长的光衰减效果一致。金属涂层红外中性密度滤光片（IR ND滤光片）从基板上的金属合金涂层中获得光密度，该涂层由波长区域决定，通过吸收和反射的组合降低光的强度。Andover红外ND滤光片提供三种标准尺寸:直径12.5mm、25mm和50mm。红外中性密度滤波片可以生产定制的尺寸，以及定制的光谱特性。
所属品牌： 美国Andover
应用类型：
产品型号：1.05ILP-12.5，2.40ILP-12.5，3.60ILP-50
负责人：包程鑫
联系电话：13417596712
电子邮箱：cxbao@welloptics.cn
更高线性度衰减、覆盖2000-14000nm的红外中性密度滤光片
红外中性密度滤光片（IR Neutral Density
Filters）又被称为红外衰减片，顾名思义，是一种专为红外光谱区间设计的光学滤光片。Andover红外中性密度滤光片从基板上的金属合金涂层中获得光密度，该涂层由波长区域决定。与全电介质或吸收型不同，金属型Andover红外衰减片采用吸收和反射的组合来降低光的强度，而不会改变光的色彩平衡或波长组成。这意味着无论红外光的波长如何，Andover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。
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
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
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