background
With the development of the security industry, 24-hour uninterrupted surveillance has become increasingly demanding for infrared night vision. It not only meets the requirement of tens of meters in front of the eye, but with the emergence of new intelligent video technologies in the security industry, network camera dynamics Surveillance requirements are also getting higher and higher. In the event of an emergency, it requires a network camera for long-range tracking and monitoring. LED infrared lamps have practical effects that can only reach within tens of meters. The infrared effect increases with distance and angle. The attenuation is unable to complete the tracking and monitoring in the middle distance. In the real infrared light products that can achieve long-range monitoring, mesh camera with laser infrared light products is a best choice.
In the field of monitoring night vision, laser infrared lamps have been widely used, but there are also some problems in the use process. That is, there are some misunderstandings about the basic understanding and understanding of laser infrared lamps and their use. Laser infrared light view, for everyone to correctly understand and understand the laser infrared light products.
Features
A direction: The light emitted by the laser is born in one direction. The divergence angle of the beam is small and close to the ideal parallel beam.
B Monochromatism: The spectral width of the laser is very small, several nanometers. So it has a good monochromatic light source.
C has high brightness and high energy density.
Semiconductor lasers
Lasers are solid-state lasers (such as ruby ​​lasers, which convert light energy into light energy with different wavelengths), gas lasers (such as carbon dioxide lasers), chemical lasers (chemical energy into light energy), and semiconductor lasers (electric energy into light energy). .
Laser infrared lamps belong to semiconductor lasers. They use semiconducting materials to generate photon energy by lowering the electron energy level during the recombination of holes and electrons. Photons then generate resonant photon propagation directions between resonant cavities. laser.
The size of the semiconductor laser is small, the size of the laser is in the order of millimeters, and the light emitting chip is in the order of 100 micrometers.
The semiconductor laser has high conversion efficiency from electric energy to light energy, and the electro-optical conversion efficiency is at least 80%. The highest electro-optical conversion rate of LED lamps can only reach 20%.
Laser infrared lamp uses semiconductor laser as light emitting device
The semiconductor laser outputs light, so it can be used as an illumination source. Because the laser has good directionality, it shows that the light beam has a small angle, energy concentration, and the distance to the far distance still has enough light intensity, so it is very suitable for long-distance lighting. The ability to illuminate long-distance targets is the most important feature of infrared laser illuminators.
The energy distribution of the semiconductor laser in the vertical section of the beam is non-uniform, Gaussian distribution, strong in the middle, gradually weakening to the edge, or distribution in bright and dark stripes. Therefore, the direct use of semiconductor lasers as an illumination source is not desirable (non-professional manufacturers of laser lamps on the market, and cottage-style laser infrared lamps have a lot of problems, which has caused engineering users to have some negative impressions on laser infrared lamps).
Night vision monitoring system consisting of laser infrared lamp and ordinary CCD camera; the product adopts 810nm wavelength infrared semiconductor laser as the light source, and cooperates with infrared camera, black and white CCD camera or low light night vision equipment to form infrared night vision monitoring system and belongs to active night. Depending on the monitoring system. Laser infrared light is equipped with active light source. Relatively low-light night vision and infrared thermal imagers have better market adaptability.
Laser infrared light usually use 810nm semiconductor lasers. 810nm is near-infrared, and the wavelength of red light in visible light is close to that of CCD. Each regular manufacturer's sensor chip has a strong sensing effect on the 810NM spectrum.
Only when making a camera, in order to ensure the quality of the color image, the near-infrared light will be filtered out before entering the CCD. In general, manufacturers will use filters to filter infrared light. When it is not filtered out, the color image will show a serious color cast.
Difference between laser luminaires and LED lamps
1. Illumination distance: The output power of a single LED is generally 5~15W. Although 40~50W LED products come out, it is still unable to compare with the semiconductor laser tube (LD), the single-core semiconductor laser tube can emit light power. Up to 10W, the brightness of a laser tube equals the sum of the brightness of several hundred LEDs. Therefore, a relatively small laser product can achieve a large irradiation distance, greatly improving the irradiation effect, and improving the brightness of the picture.
2. Volume: Infrared laser illuminator uses a single-chip semiconductor laser tube as a light-emitting medium, so the volume can be made very small, while meeting the brightness requirements.
3. Lifetime: Both the semiconductor laser tube and the LED are semiconductor light emitting products, and the life of the semiconductor product is largely controlled by the heat dissipation of the product. Due to the use of metal packages and dedicated power supplies, laser luminaires achieve perfect temperature control through advanced semiconductor temperature control technology, which allows the product to always operate at a set and reasonable temperature, and its lifetime can be well guaranteed.
4. Red exposure effects: Near-infrared semiconductor light-emitting products have red exposure problems, which is determined by the semiconductor light-emitting mechanism. However, since the infrared laser illuminator uses a single chip to emit light, the existence of a red light exposure has only a very small light emitting point, which can be ignored even in remote lighting. The LED lamp is assembled from many LED tubes. After the red exposure, the entire panel of the product will be red exposed, which is not conducive to the concealment of the infrared lamp.
5. Cost: The production method of semiconductor laser tube and LED is very similar. The core chip is realized through epitaxial growth, and then through different packaging processes to meet the working requirements of the chip. The difference in cost is mainly determined by the production volume of the product. Due to the simplicity of packaging and the large amount of application, LEDs can be produced on a large scale, which greatly reduces the cost of the product; with the continuous development of laser application technology, the output of semiconductor laser tubes These years have also become geometric multiples, and the cost of the product has dropped to the level that can be accepted by ordinary users.
6. Since the working conditions of the semiconductor laser tube are demanding, the quality requirements for each laser tube are greatly higher than that of the LED, so the quality of the core components of the infrared laser illuminator has strict requirements from the very beginning, and the quality control is high. The requirements ensure that the performance and quality of the final product are guaranteed.
The main purpose
The laser infrared lamp cooperates with the infrared camera, the black and white CCD camera or the low light night vision equipment to form a night vision monitoring system, and realize 24-hour continuous monitoring. The product has the advantages of effective illumination distance, long service life, good night vision imaging effect, high concealment, and thorough resolution of night vision lighting problems. It is the most ideal infrared illumination product for night vision monitoring.
Has been widely used in *, justice, banking, prisons, oil fields, engineering construction, forests, maritime affairs, customs, ports, railways, airports, border defense, *, roads, factories, communities, squares, warehouses and other night vision surveillance sites.
development trend
With the technical progress and development of laser infrared lamps, laser infrared lamps as the camera's night vision light source more and more demand for the symbol market, replace the LED infrared light to become the best match with the infrared light source products. Because seeing laser infrared technology is an advanced infrared technology that is different from the nature of LED, and has become the dominant product and leading market of infrared technology. Some front-end equipment in the domestic market is put into the development of laser infrared lamps and their own products. With a keen market perspective, it seizes market opportunities to meet demand, while at the same time it can occupy the market's leading position, occupy the highest level of technology, and meet the company's innovation profit orientation.
Development and Application of Laser Infrared Lamp Technology The irreversible trend of the security industry has created a space for night vision surveillance and the field. There are always skeptical attitudes toward new technologies, and there are people and companies that maintain attitudes. Independent innovation is the company's core competitiveness. Infrared laser night vision technology caters to and integrates with the development of infrared technology. Whoever grasps this direction will have mastered the commanding heights of the market, thereby gaining the customer's recognition of the company's strength and ability to innovate, thereby winning the market's pre-dawn profits and market control and possession. With the development of laser infrared technology and market acceptance, whether laser infrared lamps have become market recognition, and whether laser infrared lamps have become mainstream infrared night vision products, let us wait and see.
With the development of the security industry, 24-hour uninterrupted surveillance has become increasingly demanding for infrared night vision. It not only meets the requirement of tens of meters in front of the eye, but with the emergence of new intelligent video technologies in the security industry, network camera dynamics Surveillance requirements are also getting higher and higher. In the event of an emergency, it requires a network camera for long-range tracking and monitoring. LED infrared lamps have practical effects that can only reach within tens of meters. The infrared effect increases with distance and angle. The attenuation is unable to complete the tracking and monitoring in the middle distance. In the real infrared light products that can achieve long-range monitoring, mesh camera with laser infrared light products is a best choice.
In the field of monitoring night vision, laser infrared lamps have been widely used, but there are also some problems in the use process. That is, there are some misunderstandings about the basic understanding and understanding of laser infrared lamps and their use. Laser infrared light view, for everyone to correctly understand and understand the laser infrared light products.
Features
A direction: The light emitted by the laser is born in one direction. The divergence angle of the beam is small and close to the ideal parallel beam.
B Monochromatism: The spectral width of the laser is very small, several nanometers. So it has a good monochromatic light source.
C has high brightness and high energy density.
Semiconductor lasers
Lasers are solid-state lasers (such as ruby ​​lasers, which convert light energy into light energy with different wavelengths), gas lasers (such as carbon dioxide lasers), chemical lasers (chemical energy into light energy), and semiconductor lasers (electric energy into light energy). .
Laser infrared lamps belong to semiconductor lasers. They use semiconducting materials to generate photon energy by lowering the electron energy level during the recombination of holes and electrons. Photons then generate resonant photon propagation directions between resonant cavities. laser.
The size of the semiconductor laser is small, the size of the laser is in the order of millimeters, and the light emitting chip is in the order of 100 micrometers.
The semiconductor laser has high conversion efficiency from electric energy to light energy, and the electro-optical conversion efficiency is at least 80%. The highest electro-optical conversion rate of LED lamps can only reach 20%.
Laser infrared lamp uses semiconductor laser as light emitting device
The semiconductor laser outputs light, so it can be used as an illumination source. Because the laser has good directionality, it shows that the light beam has a small angle, energy concentration, and the distance to the far distance still has enough light intensity, so it is very suitable for long-distance lighting. The ability to illuminate long-distance targets is the most important feature of infrared laser illuminators.
The energy distribution of the semiconductor laser in the vertical section of the beam is non-uniform, Gaussian distribution, strong in the middle, gradually weakening to the edge, or distribution in bright and dark stripes. Therefore, the direct use of semiconductor lasers as an illumination source is not desirable (non-professional manufacturers of laser lamps on the market, and cottage-style laser infrared lamps have a lot of problems, which has caused engineering users to have some negative impressions on laser infrared lamps).
Night vision monitoring system consisting of laser infrared lamp and ordinary CCD camera; the product adopts 810nm wavelength infrared semiconductor laser as the light source, and cooperates with infrared camera, black and white CCD camera or low light night vision equipment to form infrared night vision monitoring system and belongs to active night. Depending on the monitoring system. Laser infrared light is equipped with active light source. Relatively low-light night vision and infrared thermal imagers have better market adaptability.
Laser infrared light usually use 810nm semiconductor lasers. 810nm is near-infrared, and the wavelength of red light in visible light is close to that of CCD. Each regular manufacturer's sensor chip has a strong sensing effect on the 810NM spectrum.
Only when making a camera, in order to ensure the quality of the color image, the near-infrared light will be filtered out before entering the CCD. In general, manufacturers will use filters to filter infrared light. When it is not filtered out, the color image will show a serious color cast.
Difference between laser luminaires and LED lamps
1. Illumination distance: The output power of a single LED is generally 5~15W. Although 40~50W LED products come out, it is still unable to compare with the semiconductor laser tube (LD), the single-core semiconductor laser tube can emit light power. Up to 10W, the brightness of a laser tube equals the sum of the brightness of several hundred LEDs. Therefore, a relatively small laser product can achieve a large irradiation distance, greatly improving the irradiation effect, and improving the brightness of the picture.
2. Volume: Infrared laser illuminator uses a single-chip semiconductor laser tube as a light-emitting medium, so the volume can be made very small, while meeting the brightness requirements.
3. Lifetime: Both the semiconductor laser tube and the LED are semiconductor light emitting products, and the life of the semiconductor product is largely controlled by the heat dissipation of the product. Due to the use of metal packages and dedicated power supplies, laser luminaires achieve perfect temperature control through advanced semiconductor temperature control technology, which allows the product to always operate at a set and reasonable temperature, and its lifetime can be well guaranteed.
4. Red exposure effects: Near-infrared semiconductor light-emitting products have red exposure problems, which is determined by the semiconductor light-emitting mechanism. However, since the infrared laser illuminator uses a single chip to emit light, the existence of a red light exposure has only a very small light emitting point, which can be ignored even in remote lighting. The LED lamp is assembled from many LED tubes. After the red exposure, the entire panel of the product will be red exposed, which is not conducive to the concealment of the infrared lamp.
5. Cost: The production method of semiconductor laser tube and LED is very similar. The core chip is realized through epitaxial growth, and then through different packaging processes to meet the working requirements of the chip. The difference in cost is mainly determined by the production volume of the product. Due to the simplicity of packaging and the large amount of application, LEDs can be produced on a large scale, which greatly reduces the cost of the product; with the continuous development of laser application technology, the output of semiconductor laser tubes These years have also become geometric multiples, and the cost of the product has dropped to the level that can be accepted by ordinary users.
6. Since the working conditions of the semiconductor laser tube are demanding, the quality requirements for each laser tube are greatly higher than that of the LED, so the quality of the core components of the infrared laser illuminator has strict requirements from the very beginning, and the quality control is high. The requirements ensure that the performance and quality of the final product are guaranteed.
The main purpose
The laser infrared lamp cooperates with the infrared camera, the black and white CCD camera or the low light night vision equipment to form a night vision monitoring system, and realize 24-hour continuous monitoring. The product has the advantages of effective illumination distance, long service life, good night vision imaging effect, high concealment, and thorough resolution of night vision lighting problems. It is the most ideal infrared illumination product for night vision monitoring.
Has been widely used in *, justice, banking, prisons, oil fields, engineering construction, forests, maritime affairs, customs, ports, railways, airports, border defense, *, roads, factories, communities, squares, warehouses and other night vision surveillance sites.
development trend
With the technical progress and development of laser infrared lamps, laser infrared lamps as the camera's night vision light source more and more demand for the symbol market, replace the LED infrared light to become the best match with the infrared light source products. Because seeing laser infrared technology is an advanced infrared technology that is different from the nature of LED, and has become the dominant product and leading market of infrared technology. Some front-end equipment in the domestic market is put into the development of laser infrared lamps and their own products. With a keen market perspective, it seizes market opportunities to meet demand, while at the same time it can occupy the market's leading position, occupy the highest level of technology, and meet the company's innovation profit orientation.
Development and Application of Laser Infrared Lamp Technology The irreversible trend of the security industry has created a space for night vision surveillance and the field. There are always skeptical attitudes toward new technologies, and there are people and companies that maintain attitudes. Independent innovation is the company's core competitiveness. Infrared laser night vision technology caters to and integrates with the development of infrared technology. Whoever grasps this direction will have mastered the commanding heights of the market, thereby gaining the customer's recognition of the company's strength and ability to innovate, thereby winning the market's pre-dawn profits and market control and possession. With the development of laser infrared technology and market acceptance, whether laser infrared lamps have become market recognition, and whether laser infrared lamps have become mainstream infrared night vision products, let us wait and see.
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