What Aspects Should Be Paid Attention to in the Selection of Thermal Imaging Core Modules?

The infrared thermal imaging core module is composed of an infrared thermal imaging core and a lens, and the most important one is the infrared thermal imaging core. The infrared thermal imaging core is now mixed in the market. In order to help you choose your own required thermal imaging core module, this article will focus on the issues that need to be paid attention to in the infrared thermal imaging core.

The detector is equivalent to the human brain. If a person does not have a brain, it is an empty shell. If the movement does not have a detector, the effect is the same. Military equipment is relatively expensive, and this article only talks about uncooled infrared detectors.

Uncooled infrared detectors can work at room temperature, with small size and low power consumption, so the infrared thermal imaging cameras used in the civilian market and some military markets are all uncooled detectors.

Thermosensitive materials are an important bridge between sensing infrared radiation and output signals and are the core components of infrared detectors. At present, the thermosensitive materials of uncooled infrared detectors are mainly vanadium oxide (VOx) and amorphous silicon (α-Si).

In the early 1980s, Honeywell Company in the United States took over the military project and began to study vanadium oxide thin films, and developed an uncooled vanadium oxide microbolometer in the late 1980s. Vanadium oxide also has a variety of composite forms, such as VO2, V2O5, V2O3, and so on. Vanadium oxide material has a high TCR (about 2%/K ~ 3%/K at room temperature), and its preparation technology has matured after years of development and has been widely used in high-end microbolometer products. application.

The French Atomic Energy Commission has been researching detectors of amorphous silicon materials since 1992, and the technology is now very mature. The TCR of amorphous silicon is comparable to VOx, and it is also a microbolometer material that has been widely used. Its advantages are that it is fully compatible with standard silicon processes and the preparation process is relatively simple. However, since amorphous silicon is an amorphous structure, it exhibits higher 1/f noise than VOx, so NETDs are generally inferior to VOx materials.

 

The detector resolution of an infrared thermal imager is an important indicator of clarity. The detector resolution directly affects the final imaging effect. The higher the resolution, the clearer the image, the clearer the objects you see, and the better the user experience. it is good.

The relatively high-end products of civilian thermal imaging cameras have a pixel of 640×512. The infrared pictures taken by the thermal imaging camera are clear and delicate, and objects the size of a hare can be distinguished 500 meters away; the pixel of the mid-range thermal imaging camera is 384×288, this series of infrared thermal imaging cameras can accurately identify the walking human body at a distance of 700 meters. 1024×768 pixel infrared thermal imaging camera products also perform well in the high-end civilian field.

 

Everyone should remember that ZTE was banned in the United States not long ago, which is enough to see that core technology is the lifeblood of a company, and it is also a necessary condition for the prosperity of a country. The pixel spacing of the infrared thermal imaging camera detector is the infrared thermal imaging industry. one of the core technology.

The pixel spacing of thermal imaging cameras is constantly breaking new records. At present, the mainstream is 17 microns, and it is moving towards 14 microns. Some Chinese manufacturers have developed 12-micron detectors that reach the world's advanced level. Really proud to be Chinese!

 

The frame rate is also called FPS, which means the number of pictures displayed per second. The higher the frame rate, the more coherent the picture action and the clearer the picture quality. The frame rate parameter is very important when the infrared thermal imager detects in real time! For moving objects, the higher the frame rate of the infrared thermal imager, the more coherent the picture will be, and the better the observation effect, especially in aerial photography, the infrared thermal imager with a low frame rate is almost impossible to detect.

 

After foreign products are sold to China, there is a limited frame rate, which is generally limited to 9Hz. Everyone should be able to guess the purpose, which is for the technical blockade. But even under such severe conditions, our country has developed detectors with a high frame rate of 50Hz.

 

Professional thermal imaging camera manufacturers have a complete industrial chain, with integrated quality control capabilities from integrated circuits, sensors, detectors, core components, and application terminals. Thermal imaging cameras are high-end precision instruments, and thermal imaging equipment has the military industry. Reliable quality assurance system. The infrared thermal imaging core modules produced by professional thermal imaging camera manufacturers support a variety of types of lenses to choose from, and can even be customized, which many small factories cannot do.

 

Service guarantee is also a very important part. If there is a problem with the device itself or if you encounter a problem with the use of the device, you need to ask the after-sales customer service, and it can be solved quickly, reducing the user's worries.

Based on the above six points, we can correctly choose the infrared thermal imaging core module that suits us. Many times we think that foreign brands are good, but when you look back at the domestic manufacturers, you will find the original domestic manufacturers. Manufacturers are already among the best in these industries, and in some places, they have even surpassed many foreign manufacturers. If you want to purchase thermal imaging camera modules or components, please contact us.

JAVOL is a professional custom infrared thermal imaging camera manufacturer. Relying on the multi-spectral high-sensitivity photoelectric sensor chip of advanced compound semiconductor materials, with deep learning AI algorithm as the engine, integrating low-light night vision technology, infrared thermal imaging technology, short-wave infrared technology, and multi-spectral fusion technology, our company designs, develops and manufactures Advanced imaging products and system solutions are widely used in machine vision, autonomous driving, drone payloads, high-end manufacturing, and medical diagnosis.