APPLICATION NOTE \\ Justin Blanke NVIS Measurement of Displays and Panel Graphics According to MIL-L-85762A / MIL-STD-3009 NVIS-A/-B/-C Accurate measurement of NVIS radiance according to MIL-L-85762A / MIL-STD-3009 is a challenging task, and often very time consuming. Usually, experienced and skilled experts are needed to perform the measurements. Traditional spectroradiometers are complex to operate, not portable, and also very slow. Some measurements can take up to a couple of minutes to be completed. This application note describes the features of the NVIS display test system DTS 140D NVIS and discusses its measurement performance in specific applications. The DTS 140D NVIS is ideal for manufacturing and quality control applications that require long-term dependability as well as simple and fast push button operation. APPLICATION NOTE

APPLICATION NOTE \\ NVIS MEASUREMENT \\ . INTRODUCTION 1 For NVIS measurements it is critical that the extremely high intensity differences between the visible and near infrared spectral ranges are measured correctly (380 to 780 nm and 650 to 930 nm, respectively - the latter being the sensitivity range of the NVG Night Vision Goggle). The NVIS display test system DTS 140D NVIS combines the advantages of the high-end array spectroradiometer CAS 140D and the Telescoptic Optical Probe TOP 200. Specific modifications to the CAS 140D include further suppression of stray light and automatic adjustment...

APPLICATION NOTE \\ NVIS MEASUREMENT \\ . FEATURE LIST DTS 140D NVIS 5 ~ Fig. 2: Spectroradiometer with optimized crossed Czerny-Turner spectrograph. \\ . FIELDS OF APPLICATION FOR THE 4 DTS 140D NVIS M easurement of luminance and spectral NVIS radiance according to MIL-L-85762A / MIL-STD-3009. S pectral range allows GOST PB 58-55-002-2010 tests. N VIS irradiance measurements / NRI according to SAE ARP 5825. Push button Pass / Fail testing and reporting. S upports contrast / sun light readability measurement. E mission pattern / viewing angle measurement with the automated positioning system...

APPLICATION NOTE \\ NVIS MEASUREMENT \\ . TOP 200 TELESCOPIC OPTICAL PROBE 7 The lens choice determines the field of view / possible measuring spot sizes for corresponding working distances (see Fig. 4 at right). As a software feature, a reticle is imaged onto the sample in the closed aperture position. If an aperture is selected, the exact measurement spot can be seen. The DTS 140D NVIS is supplied with a multi-mode fiber and a mode mixer. The patented mode mixer compensates for changes in the transmission caused by fiber movement. With it, the error is below 1% as compared to up to 20% without...

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