The research direction of low-light night vision devices is committed to improving the performance of existing generations of products, reducing costs, and expanding equipment: further extending the infrared response of the new generation of products and improving the sensitivity of the device.

(1) Ultra-second-generation low-light vision technology The ultra-second-generation low-light tube adopts roughly the same technology as the third-generation low-light close-up tube structure. The main technical feature is to introduce high-sensitivity multi-alkali photocathode into the second generation. In the low-light tube, the third-generation micro-MCP, tube structure, integrated power supply, crystallography, semiconductor body characteristics and other mechanism and process research results are used, and the imaging quality is greatly improved. Because the process is relatively simple and the price is relatively low, so become the current mainstream product.

(2) The fourth-generation low-light night vision technology In recent years, the designers of low-light tubes have removed the ion barrier film from the MCP to obtain a film-free low-light tube, and added an automatic door switch power supply to control the voltage of the photocathode. Switching speed, and improved: Low halo imaging technology to help enhance visual performance in bright light. In 1998, Litton first successfully developed an imaging tube without MCP, which greatly improved the target detection distance and resolution, especially under extremely low illumination conditions. The key technologies involved new high-performance filmless MCP photocathode and MCP. The automatic pulse gated power supply and halo-free imaging technology are adopted. Although this filmless BCGMCPIV low-light tube technology has just started, its good performance makes it a new hot spot in the field of low-light image enhancement technology in the 21st century.

With the development of low-light night vision technology, low-light night vision equipment increasingly reflects the trend of integration. On the one hand, it is reflected in the direct integration of low-light night vision functions into weapons and observation equipment; It depends on the function integration of the equipment itself. For the former, it is mainly reflected in the development of night vision sights. In addition, some optical observation equipment, such as rangefinders, also integrate night vision devices into day and night observation equipment. The most representative one is the LEI BIG-35 from Vectronix of Switzerland. This equipment can work day and night to measure the distance of distant targets. Distance and azimuth, measure the distance and azimuth between two distant targets, and can also locate the coordinates of distant enemies through its own global positioning system (GPS), which greatly improves the reconnaissance efficiency of scouts.

For the night vision equipment itself, in addition to the development of smaller and more compact, it should be closer to the CI system of modern warfare, not only should it have a digital connection interface, but also should become the display terminal of the individual soldier's information system. Taking Switzerland's BIM4 night vision device as an example, a variety of individual soldier information can be added to the night vision image of the device, such as direction north, commander's instructions, and electronic map battlefield diagram, etc., which will become one of the core components of the future individual soldier combat system. one.

In general, the development of night vision technology closely follows the development trend of modern warfare technology, not only the improvement of night vision capability itself, but also the integration with the information system of future warfare.

LABEL: night vision

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