Expert opinion: Future prospects for infrared cameras

With the continuous development of the security industry and the continuous updating of technology, the demand for 24 hours a day and night has become increasingly strong. Therefore, front-end video capture devices equipped with infrared light sources play a more prominent role in video surveillance. In 2010, SONY, Samsung and other international manufacturers also competed to launch new infrared cameras. Although SONY only introduced several infrared devices on high-definition network cameras equipped with CMOS image sensors, it was evident that international companies began to pay attention to the infrared camera surveillance market and increased the investment in infrared camera design and development.

In order to meet the demand for day and night surveillance, Chinese manufacturers began to explore the field of infrared cameras as early as 2001-2003. From the earliest camera plus infrared light board module to camera and infrared light integrated design, from the LED infrared light power-on-light mode to the introduction of photosensitive resistors, double filters, from basic video surveillance requirements to waterproof and riot The appearance of various structural functions, such as strong light suppression, face recognition, and privacy masking, has witnessed the rapid development of infrared camera technology and the market in China. After 2006, with more and more manufacturers influencing this field, the infrared camera market has gradually formed a situation in which supply exceeds demand, and the competition among manufacturers has become more intense. In the age of the security industry, infrared cameras have the same time stamp as other security products. Objectively speaking, the proliferation of manual workshops and the lack of industry standard mechanisms have to some extent restricted the development of the infrared camera market. The addition of international giants is bound to inject a potent dose into the infrared camera market. Shopping malls such as the battlefield, the survival of the fittest, and the survival of the fittest are on a daily basis. How to improve product quality, continuous innovation, how to come up with infrared camera products and solutions to meet customer needs, how can survive in the new round of reshuffle, competition, the author believes that each company has a strong sense of urgency Should think carefully about the problem!

Below, the author will combine the design experience of a company for more than 10 years and the recent research and development achievements to explain the new technologies and new applications of infrared cameras.

light source

The progress of infrared cameras is inseparable from the development of infrared light sources. It can be said that the development history of infrared cameras is also a history of the development of infrared light sources. Infrared light can be simply divided into 1. Halogen bulb plus filter 2. Laser tube 3. LED light-emitting diodes of three kinds. At present, LED light-emitting diodes such as Φ5, Φ8, and Φ10 are most widely used in the market. As we all know, infrared cameras infrared light will emit a lot of heat after a long time of work, the internal body CCD, DSP processing chip, PCB circuit board and other devices have varying degrees of damage. In addition, the quality of the infrared light components on the market is also uneven, and after a long period of application, it may be damaged. Therefore, the above two aspects limit the service life of infrared cameras.

In response to this problem, a company not only uses high-quality infrared light components, but also makes efforts and attempts to introduce new light sources. For example, the recently introduced cold light intelligent infrared camera TC-C6530RBF (Note: cold light source is the use of chemical energy, electrical energy, bio-energy excitation light source). The principle of luminescence of a cold light source is that electrons are generated under the action of an electric field, and the luminescence phenomenon is generated by collision excitation of the fluorescent material. It has very good optical and flashing properties. The cold light source does not cause the internal temperature of the body to soar even if it is operated for a long time. Therefore, the design of the cold light infrared lamp and the ordinary infrared lamp can effectively reduce the heat of the light source and prolong the service life of the whole machine.

In addition, for the dot-matrix lamps on the market, a company has also conducted in-depth research and launched an infrared camera based on the third generation of dot-matrix lamps. The third-generation dot-matrix lamps have lower power consumption, lower power consumption, better heat dissipation performance, and unique packaging technology, making infrared lamp loss less than 5% per year. Considering the effect, the third-generation dot matrix is ​​used. The lamp monitor screen is cleaner, strong sense of hierarchy, uniform light concentration, and high brightness.