Prospects of the domestic digital night vision device industry

 

 

 

What is a digital night vision device?

 

  Digital night vision device is also known as digital night vision device, and its English name is Digital Night Vision. Most digital night vision devices use high-sensitivity CCD (or CMOS) image sensors to process and convert the low-illuminance light into electrical signals, which are then transmitted to microdisplays, and then the converted visible image light is viewed through the eyepiece.

 

 

数码夜视仪的工作原理是什么呢？

 

 

The working principle of digital night vision device:

Dim light——>CCD (CMOS) photoreceptor——>CPU (processed by software)——>Built-in display screen——>Visible image. Instead of using photomultiplier tubes, digital night vision digitizes an image of available light, replicates it in software, and pushes it back into a viewable image.

The following figure is a schematic diagram of the working principle of the digital night vision device:

 

 

 

The main advantages of digital night vision

 

 

Digital night vision devices offer many advantages over conventional intensified tube night vision devices.

(1) Price advantage

The core component of the digital night vision sensor is the sensor. At present, most digital night vision devices use CCD image sensors, and the technology of this sensor is very mature, and it has been widely used in the market. Technological innovation makes the material cost lower, which is different from the traditional image-increasing tube technology. So twisted.

(2) Performance advantages

The digital night vision device can not only be used day and night, but also can take pictures and videos, which is not available in the image intensifying tube night vision device. In addition to these functions, the digital night vision device also has more functions. Digital electronic zoom function, 5x-20x can zoom in or out the viewing target, so that you can see the overall situation and observe in detail; adjusting the right lens with one hand can quickly focus, especially for outdoor viewing of moving targets or traveling It is very convenient to search for targets in the center; playback function: you can play back pictures or video files on the night vision device, and you can delete or protect the files; the auxiliary infrared lighting can be turned on or off, the infrared lighting range can be adjusted, and the lighting intensity can be 25 %, 50%, 75%, 100% to choose; day/night two viewing modes can be selected, and the viewing color can be white/green in night mode, which is beneficial for users to achieve better results in different environments ;Positioning function: with GPS positioning and electronic compass display function (some models do not have); WIFI function: connect the night vision device and mobile phone APP through WIFI, on the mobile terminal supported by the APP, you can transmit images, or you can directly click on the screen The corresponding buttons of the instrument perform video and camera functions without entering the function menu of the instrument.

(3) Image advantage

Image intensifier tube night vision devices will have image distortion from photocathode or phosphor screen defects, which is unavoidable, while digital night vision devices will not experience such serious image distortion. Compared with thermal imagers, digital night vision devices are more recognizable than their images, and have more advantages in criminal investigation and evidence collection. The digital night vision device can also save photos and videos to the memory card. Most digital night vision devices have video output ports, most of which are AV video ports, while the new digital night vision devices are HDMI high-definition video output ports, which can connect the device to a high-definition monitor or a dedicated video recorder, or even some handheld video recorders.

(4) Service life

Traditional night vision devices use very fragile phase intensifier tubes, such as exposure to bright light is quite dangerous, and as the frequency of use increases, the efficiency of the image intensifier tube will become lower and lower, and of course the lifespan will be shorter and shorter . The digital night vision device does not have to worry about this problem at all, and the high-performance CCD imaging system can provide all-weather observation.

Digital night vision device application industry

At present, the application industries of digital night vision devices in China include:

(1) Operation and training purposes such as reconnaissance and command of military units

(2) Frontier armed police inspection records, customs anti-smuggling inspections and maritime patrols

(3) Anti-terrorism and stability maintenance by public security, procuratorate, legal department, urban management and other units, law enforcement secret reconnaissance, inspection, law enforcement and evidence collection

(4) Monitor wild animals in nature reserves, forestry, wildlife protection, scientific research institutes, forest wetlands, forest parks, etc., and anti-poaching

(5) Field observation and ambulance, mountain forest cave tourism adventure enthusiasts, outdoor tourism, climbing heights, looking far, camping, taking pictures and monitoring

(6) Journalists observe and take photos remotely, and investigate company/private detective evidence collection records

(7) Long-distance observation and photography by traffic command and expressway management departments

(8) Long-distance observation and photographing of dangerous industries such as fire protection/banking/electricity/railway water conservancy/steel plant/riot control/high-level operations

(9) Forestry management, geological exploration, oil production units, airport management, large gathering management units/railway and port remote

(10) Environmental protection, safety production supervision, or hunting and animal observation enthusiasts' long-distance photo monitoring

Digital night vision brand

At present, most of the well-known brands of digital night vision devices are concentrated in foreign brands, such as Dallmeyr in Germany, Cerney in France, ORPHA in the United States, RNO in the United States, Armasight in the United States, TENAR in the United Kingdom, Plantxr in Australia, Russian Remiwa et al. Domestic brands of digital night vision devices are relatively few, and most of them are online brands, but we still look forward to the emergence of large digital night vision device brands in China as soon as possible, and hope that China's digital night vision devices will become more and more powerful!

With its unique advantages, digital night vision devices have been recognized by more and more users. At present, there are products that integrate digital night vision in the field of digital night vision. The functions of laser, ranging, thermal imaging, intercom, etc. are The products of digital night vision devices are becoming more and more complete. Digital night vision is a technological innovation in the field of night vision, and it will be the general trend.