Measurement for cutoff depth of out-band of solar blind UV filters

CUI Mu-han; ZHOU Yue; CHEN Xue; YAN Feng; YANG Huai-jiang

doi:10.3788/OPE.20142209.2306

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Measurement for cutoff depth of out-band of solar blind UV filters

更新时间：2020-08-13

- Measurement for cutoff depth of out-band of solar blind UV filters
- Optics and Precision Engineering Vol. 22, Issue 9, Pages: 2306-2311(2014)
- 作者机构：
  
  1. 中国科学院大学北京,中国,100049
  2. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142209.2306
  CLC： TN23;TH741.4
- Received：12 August 2013，
  
  Revised：22 September 2013，
  
  Published：25 September 2014
- 稿件说明：
移动端阅览
崔穆涵, 周跃, 陈雪等. 日盲紫外滤光片的带外截止深度测试[J]. 光学精密工程, 2014,22(9): 2306-2311

CUI Mu-han, ZHOU Yue, CHEN Xue etc. Measurement for cutoff depth of out-band of solar blind UV filters[J]. Editorial Office of Optics and Precision Engineering, 2014,22(9): 2306-2311
崔穆涵, 周跃, 陈雪等. 日盲紫外滤光片的带外截止深度测试[J]. 光学精密工程, 2014,22(9): 2306-2311 DOI： 10.3788/OPE.20142209.2306.

CUI Mu-han, ZHOU Yue, CHEN Xue etc. Measurement for cutoff depth of out-band of solar blind UV filters[J]. Editorial Office of Optics and Precision Engineering, 2014,22(9): 2306-2311 DOI： 10.3788/OPE.20142209.2306.

摘要

针对全日盲紫外滤光片，建立了以窄带光发射二极管（LED）作为基本光源的超大动态范围滤光片带外截止深度测试系统，并分析了系统的测试误差。该系统主要由LED光源，已知衰减系数的标准反射式中性衰减片以及光电倍增管组成。基于替代法，系统测试时将LED光源通过衰减片后的输出电流作为参考电流值替代光源的初始电流值，通过对比运算获得滤光片的带外截止深度。针对系统中的反射式衰减片，文中还提出一种组合衰减片方法，以保证光电倍增管始终工作在线性响应范围内，从而实现对滤光片的超大动态范围的截止深度测试。实验结果表明，在350~800 nm谱段内，该测试系统可测滤光片的带外截止深度延伸至11-OD，不确定度小于2%，相对重复性误差小于0.2%。该系统结构简单，测试谱段范围宽、可测动态范围大且精度高，可广泛用于滤光片的截止深度测试。

Abstract

A measuring system for the cutoff depth of out-band of solar blind UV filters with a large dynamic range is proposed by using narrow-band Light Emitting diode(LED) lights as the standard light source. The measuring error of the system is also analyzed. The system consists of LED light sources

the standard reflective neutral attenuators known attenuation coefficients and a photomultiplier. Based on substitution method

the photomultiplier detects the current of the LED through the attenuator as reference to substitute LED initial current

thus the cutoff depth of the out-band of filters is acquired. For the reflective attenuator in the system

an attenuator combination method is presented to insure the photomultiplier working continuously within a linear response range. Experimental results show that the cutoff depth of the out-band of filters is measured to 11-OD in the large spectral range of 350-800 nm. Furthermore

the uncertainty is less than 2% and the relative repeatability error is less than 0.2%. The measuring system has a simpler structure

higher precise

a large spectral range and a wider dynamic range and has been widely used in the measurement of the filter cutoff depth of filters.

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references

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