Area source with adjustable spectrum for simulating night sky spectrum

Abstract

The invention discloses an area source with an adjustable spectrum for simulating a night sky spectrum. The area source with the adjustable spectrum for simulating the night sky spectrum comprises m light source chambers, m integrating spheres, n light-guide optical fibers and ground glass, the light source chambers comprise LED combined light sources, diaphragms and attenuation piece groups, wherein the LED combined light sources, the diaphragms and the attenuation piece groups are sequentially connected, and an inlet end and an outlet end composed of the n light-guide optical fibers of an area are both connected with the corresponding light source chambers through the integrating spheres. The LED combined light sources are used for simulating spectrums of starlight and moonlight; the diaphragms are used for adjusting beam diameters of light beams emitted by the LED combined light sources; the attenuation piece groups are used for performing attenuation on light emitted by the LED combined light sources; the integrating spheres are used for uniformly guiding the light of the attenuation piece groups after the attenuation into the light-guide optical fibers; the light-guide opticalfibers are used for receiving the light emitted by the integrating spheres to form a luminous surface and uniformly eject; and the ground glass is used for enabling the light sent by the light-guideoptical fibers to be ejected uniformly. The area source with the adjustable spectrum for simulating the night sky spectrum effectively improves the accuracy of spectrum fitting, a simulation environment is enabled to get closer to a real environment, the effect is good, and long-time usage of a pilot is more facilitated.

Description

technical field [0001] The invention belongs to the field of spectroscopy, in particular to a surface light source with an adjustable spectrum for simulating the spectrum of night sky light. Background technique [0002] As all-weather combat plays an increasingly important role in modern warfare, there is an increasing demand for night vision equipment. Although night vision equipment has improved the ability of pilots to fly at night, the unfavorable factors such as limited observation, loss of color perception, difficulty in judging distance and height, obstacles and reflections from landforms, etc., have brought spatial orientation disorders, increased workload and fatigue. A series of problems, and even lead to a rise in flight accidents. Therefore, training and training equipment used with night flight and night vision equipment came into being and were effective in war conflicts. [0003] For the simulation of night sky light source, the standard A light source of 2...

AI Technical Summary

Problems solved by technology

[0003] For the simulation of night sky light source, the standard A light source of 2856K±50K is generally used as the light source. The A light source is tungsten filament light, but due to its low luminous efficiency and short life, halogen tungsten lamps are gradually used to replace ordinary tungsten filament lamps.

The spectrum that can be simulated by tungsten-halogen lamps is fixed and cannot be adjusted. Compared with LEDs, it has a shorter service life, higher energy consumption, and cannot be switched frequently, especially because the mercury contained in it will cause harm to the environment.

Moreover, this type of light source is a point light source, and the greater the power, the more dazzling it is. Compared with the surface light source, it has insufficient illuminance and uniformity.

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