Measurement method of night-vision compatible NR value

Abstract

The invention provides a measurement method of a night-vision compatible NR value. The measurement method comprises the following steps: Step 1, selecting a standard light source emitting unit, and placing the standard light source emitting unit at a predetermined position with a predetermined distance away from spectral measurement equipment; step 2, powering on the standard light source emitting unit, so that the standard light source emitting part emits standard light, obtaining standard spectral data of the standard light, and performing proportional operation on the spectral data and a standard radiance brightness spectrum of the standard light to obtain a proportional coefficient; step 3, placing a device to be measured at a predetermined position; step 4, powering on a device to be measured so that the device to be measured emits light to be measured, obtaining spectral data of the light to be measured through the spectral measurement equipment; step 5, calculating according to the spectral data of the light to be measured and the proportional coefficient to obtain a radiance brightness spectrum of the device to be measured; step 6, calculating according to the radiance brightness spectrum of the device to be measured on the basis of a predetermined formula to obtain the night-vision compatible NR value of spectral radiance brightness.

Description

technical field [0001] The invention belongs to the field of night vision compatibility, and in particular relates to a night vision compatible NR value measuring method for measuring the spectral radiance night vision compatible NR value of a device to be tested. Background technique [0002] At present, in order to ensure the needs of aircraft flying at night, pilots will wear low-light night vision goggles to achieve naked-eye visibility. Night vision devices and night vision compatible lighting devices are of great significance to the aviation field. Night vision compatibility means that the light emitted by the luminous body in the cockpit of the aircraft cannot interfere with the night vision system and needs to maintain its naked-eye visibility. [0003] In the military standard, the following parameters are usually used to evaluate the night vision compatibility performance of aircraft cockpit light-emitting devices: spectral radiance night vision compatible NR valu...

AI Technical Summary

Problems solved by technology

The OL770-NVS test system is easy to use, but the price is expensive. However, the scientific research funds of university laboratories are limited, and there is not enough economic ability to purchase it and use it for scientific research

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