Plants need sun exposure to grow lush more. Light on the growth of plants is the role of promoting plant chlorophyll absorption. But modern science can make plants grow better in a place where there is no sun, people grasp the inherent principles that plants have any requirements ask solar. the sun’s rays is photon excitation after the energy supply process. Create artificial light source also allows plants to complete the photosynthetic process, modern horticulture or plant in the facility combines fill technology or completely artificial light technology. The scientists found that the efficiency curve of blue zone and red area is very close to the plant photosynthesis, is the best source for plant growth.in general red and blue LED ratio of LED plant light between 4:1–9:1 is appropriate, usually optional 6-9:1. use plant lamp as plant growth, leaf height general distance is 0.5 meters, daily exposure to 12-16 hours can completely replace the sun continuously. the effect is very significant, grow faster is fast 3 times than general natural plant growth,To solve the lack of sunlight in greenhouse, promote chlorophyll, anthocyanin and carrots needed Plant Photosynthesis Pigment in early 20%, the vegetables and the time of harvest, increased from 3 to 5 into production, more to improve vegetable and fruit sweetness and reduce insect pests.LED plant growth led  is a new type of plant growth light, after testing, plant light wavelength is very suitable for plant growth, flowering, results. Plant growth lamp adopt international leading semiconductor lighting principle, high precision technology products dedicated to the flower and vegetable production, the general the plant flowers on indoor, always getting worse, the main reason is the lack of light, the desired spectrum by LED light irradiation for plants, not only can promote  In its growth, but also to extend the flowering period, improve the quality of flowers. Such as the life period of only one or two days to flower, in the LED lamp irradiation, flowering period can be extended to 10-20 days. Through the application of the test, plant light wavelength is very suitable for the growth of the plant, blossom, results.

The circuit symbol and the characteristic curve of infrared light emitting diode,
as shown below. Anode (P pole) with positive voltage, cathode (N pole) voltage is applied to the negative, voltage diode with forward voltage at this time, but also have a positive current, to supply the energy of the infrared light emitting the light beam, the light conditions is same with the light-emitting diode (LED), but the infrared is not visible. In general, the drive voltage of infrared light-emitting diode (IR LED)with GaAs is 1 volt. the drive voltage of IR LED with gallium is 1.8 volt. the green emitting diode voltage as 2.0V.After the input voltage exceeds the general voltage,the current will increase rapidly, at time the effect of input voltage is large by the temperature around. when the temperature is higher,There was a decrease in the input voltage when the temperature is high, conversely, the starting voltage is reduced.

Infrared light emitting diode current – voltage characteristic
Infrared light emitting diode working in reverse voltage, only a small leakage current, but the reverse voltage exceeds the breakdown voltage, immediately generated a lot of current, will make the element burnout, general infrared diode reverse voltage is about 3~6V, when in use, try to avoid this happening.

Heat Loss

The heat loss of infrared light-emitting diodes, voltage VF is applied for infrared led, current generated by the IF accumulation, except for a small part of the energy as the emission of light, heat and radiated mostly formed, heat emitted by the so-called loss.

Receive mode
An infrared transmitting and receiving has two ways, one is direct style, the second is reflective. The direct type refers to the light-emitting tube and the receiving tube ends are relatively placed in emission and controlled object,and keep one’s distance;
Reflection type refers to the light-emitting tube and receiving tube tied together, usually receiving tube always no light, when infrared lighting of emitting diodes encounter a reflection the reflected Infrared LED was working,
Drive mode
The infrared transmitting to control the controlled device corresponding,the control of transmission power and control distance is proportional. In order to increase the control distance of infrared light, infrared light emitting diode is working on the pulse condition, because the pulse of light (light modulation) the effective transmission distance and peak current pulse is proportional, just try to improve the peak Ip, can increase the transmitting distance of infrared light. Improved Ip method, is to reduce the pulse duty ratio, namely the compressed pulse width of T, some color TV infrared remote control device, the infrared emitting tube work pulse duty ratio of about 1/3-1/4; some electrical appliances infrared remote control, the duty ratio is 1/10. Reducing the pulse duty transmitting distance empty ratio can also make the small power infrared emitting diode increases greatly. Common infrared light emitting diode, the power is divided into small power (1mW-10mW), power (20mW-50mW) and high power (above 50mW-100mW) three categories.To make the infrared light emitting diode produces a modulated light, only in the drive pipe pulse voltage with a certain frequency.When the infrared light-emitting diodes emit infrared to control the controlled device, has a corresponding infrared light and electric conversion element, such as an infrared receiver diode, phototransistor and so on. Practical infrared transmitter and receiver already paired two tubes.
Transmit beam current characteristics
General intensity of visible light-emitting diode light output unit as luminosity, such as infrared light-emitting diodes rather than the visible size of its output light energy, without visible light such as infrared light emitting diode of the output light energy unit as Watt(launch a bunch of Fe). The significance of the transmitted beam can move the amount of light emission energy in a unit of time. Emission beams of infrared light emitting diode generally also with the current ratio cause to be different. At the same time, the emission beam was also affected by the degree of Zhou Weiwen effect, the temperature drops, but enhance the emission beam; temperature rise, decreased (forward current has a fixed value), but because of heat loss and therefore, element temperature will increase the shape, so luminous efficiency will be affected and reduce.

Infrared light emitting diode infrared radiation from the high efficiency of material (with gallium arsenide-GaAs to made of PN junction), to draw the infrared light when forward voltage injection current to the PN junction。The spectral power distribution of the central wavelength of 830 ~ 950nm, half peak bandwidth is about 40nm. Its biggest advantage is completely without red storm,(with 940 ~ 950nm wavelength infrared tube) or only faint red storm (red storm for visible light) and extend the service life time. Light is an electromagnetic wave, its wavelength range from several nanometers (1nm=10-9m) to 1 mm (about mm). Visible only a part of them, which we call visible light, visible light wavelength range is 380nm ~ 780nm, visible from long to short wavelength is divided into red, orange, yellow, green, cyan, blue, purple, short than violet wavelength we called the ultraviolet light, longer than infrared light is called infrared light.Usually used the infrared emission tube wavelength: 850nm, 870Nnm, 880nm, 840nm, 980nm
The relationship between the power and the infrared emission tube wavelength: 850nm>880nm>940nm
The peak wavelength :lambda λP (energy distribution of NM luminous body or the measured object in the spectrometer, and the peak corresponding to the wavelength.)
Radiation intensity (POWER):unit as nm / Sr, said infrared tube (IR LED) radiation infrared energy size.
Radiation intensity (POWER) and the input current is proportional (If), radiation intensity and the emission distance is inversely proportional. The unit as nm / sr: infrared radiation intensity unit, for transmitting tube infrared light emitting unit solid angle (SR) size of the optical power emitted. Artificially increased the power of the infrared emitting tube, can only temporarily boost irradiation distance, and to draw the wafer attenuation speed, resulting in infrared light more and more dark, night vision more and more not clear. The external light source irradiation environment is complex, the infrared camera leaf can not play its due effect. Transmitting distance, the emission angle (15 degrees, 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, 180 degrees), light intensity, wavelength emission. Above is the physical parameters.
Electric performance parameters

The diameter as 3mm, 5mm for low power infrared  LED tube. And 8mm, 10mm for power and high-power transmitting tubes. Small power transmitting tube forward voltage: 1.1-1.5V, current 20mA. In power transmitting tube forward voltage: 1.4-1.65V, current 50-100mA. High power transmitting tube forward voltage: 1.5-1.9V, current 200-350mA.

Directional characteristics of IR LED

The emission intensity of the infrared light-emitting diode for emitting direction varies. When the steering angle is zero, the definition of the radiation intensity of 100%, when the steering angle is large, relatively reduce the radiation intensity, emission intensity by optical axis such as take the direction angle of the half, its value is the half of the peak, the angle is called the direction of the half angle, the angle that the smaller the representative element directivity of more sensitive. The general use of infrared light emitting diodes are attached to the lens, the directivity of more sensitive.

Market of IR LED
The infrared emitting tube power more than visible light LED, is often used in communication and sensor field. Remote control demand growth has a significant decreasing trend, the infrared transmitting tube transferred to the wireless communication field development, communication with the LED will be widely used, especially in the field of data transmission of computer products. Therefore, the formulation of the wireless data transmission module in the United States Association of infrared data transmission (IrDA) protocol, IrDA is fast, safe and reliable, interference small advantage, make the IrDA become a computer tool for short distance wireless data transmission. In the vigorous development of wireless data transmission of the trend, IrDA and Bluetooth as much at, although IrDA has alignment angle is small, can not have obstacles and other shortcomings, but its reliability and safety, small interference characteristics is expected to be complementary with Bluetooth wireless data transmission technology co existing, very is conducive to the use of computer peripheral product device. The future of the LED industry is a big business.Because of the power of The infrared emission tube is greater, but also be used to replace the use of laser in optical fiber communication and the printer, wherein LED is used for buildings in short distance optical communication emitting and receiving applications, because of not to and no significant market for a printer, and the infrared transmitting tube is the focus of attention, but the LED light source printer in the pursuit of high resolution they still need a considerable amount of time development. Despite the high power infrared emitting tube is still in the development stage, the future is in “fiber to the home” and the infrared emission tube printer resolution increasing trend, a big business is still the LED industry.People usually think that the infrared transmitting tube is a small market, 500 large LED manufacturers in China area only 20% in the production of infrared transmitting tube, and the majority of manufacturers in the infrared emission tube yield only the total yield of 10-20%. But in fact, from China Optics and optoelectronics industry association data show that in 2012 the overall yield, the infrared transmitting tube is estimated to be about 5310000000, grow 18% than 2004. Because the electronic and industrial field demand remains strong, the industry generally expected the infrared emission tube industry will continue to develop steadily, the industry association is expected the yield will rise 18% in this year, reached 6260000000, the number of manufacturers will also increase to 120.

The infrared emission tube (IR LED) also known as infrared emitting diode，belonging to the class of diode. It is the electric energy can be converted into near infrared (not visible) directly and the radiated light emitting device.

SMD infrared emission diode

Infrared emission control (IR LED), also known as infrared emitting diode, is a diode category. It can be directly converted into electrical energy near-infrared light (invisible light), and can radiate out of the infrared lighting emitting device is mainly used in a variety of optical switch, a touch screen and the remote transmitter circuit. The structure of Infrared emission are similar compare with the principle and common light-emitting diodes, but use different semiconductor materials. Infrared light emitting diode usually use gallium arsenide (GaAs) and gallium aluminum arsenide (GaAlAs) and other materials, the use of ir LED strip and transparent or light blue, black resin package.In line infrared emission tube
The infrared transmitting tube shape is similarity compare with the Common LED, but infrared can be emits infrared lighting. The pressure drop of voltage about 1.4V, the operating current is generally less than 20mA. In order to adapt to different work voltage, a current limiting resistor in series of circuit loop. The infrared transmitting to control the controlled device corresponding, proportional to their distance and transmit power control. In order to increase the control distance of infrared light, infrared light emitting diode is working on the pulse condition,
proportional to their pulse of light (modulated light)and peak current pulse , just try to improve the peak Ip, can be increase the transmitting distance of infrared light.

Improved Ip method, is try to reduce the pulse duty ratio, namely the compressed pulse width of T, some infrared remote control device of color TV, the infrared emitting tube work pulse duty ratio of about 1/3-1/4; some electrical appliances infrared remote control, the duty ratio is 1/10. emitting power of low power infrared LED is greatly increased when Reducing the pulse duty . Common infrared light emitting diode, the power is divided into small power (1mW-10mW), power (20mW-50mW) and high power (above 50mW-100mW) three categories. To make the infrared light emitting diode produces a modulated light, only in the drive pipe pulse voltage with a certain frequency.
Infrared light emitting diode emitting infrared to control the controlled device, controlled device has a corresponding infrared light electric conversion elements, such as infrared receiving diode, a photoelectric triode. Emission and receiving of infrared utility has paired two tubes.
The parameter
Transmitting distance, the emission angle (15 degrees, 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, 180 degrees), light intensity, wavelength emission. Above is the physical parameters need to be aware of its electric performance parameters: the market commonly used diameter 3mm, 5mm for low power infrared launching tube, 8mm, 10mm for power and high-power transmitting tubes. Small power transmitting tube forward voltage: 1.1－1.5V, current of 20mA, in the power of forward voltage: 1.4-1.65V 50 – 100mA, high-power transmitting tubes for the forward voltage: 1.5-1.9V200 350mA. Our Electronic made 1 －10W high-power infrared emission tube can be applied to the infrared lighting monitoring.

Application of infrared LED

The infrared transmitting and receiving in two ways, one is the direct style, the second is reflective. The direct type refers to the light-emitting tube and the receiving tube ends are relatively placed in emission and controlled object,a certain distance from the middle; reflective light tube and receiver tube means tied together,
usually receiving tube always without light, only to encounter a reflection in the infrared light emitted by light emitting diodes, receiving tube receives the infrared light is reflected back. Just work. Dual infrared transmitter circuit, can increase the transmission power, increase the role of the infrared emission distance.

Angle problem of IR LED
Bigger perspective of Infrared light is better, isn’t?Whether manufacturers or contractors assume agree, they think the infrared lamp Emission angle is bigger, the selection of lens room is bigger, the choice of the wide-angle lens does not appear “flashlight” phenomenon. So, everyone that their perspective is How great the infrared lamp. This seems to make sense ,but actually the inaccurate. First of all, the use of large angle of the infrared light with small angle shot,
First of all, the use of large angle of the infrared light with small angle shot, the use of light exist waste phenomenon.For example, an infrared lamp, hair Light angle is 80 degrees (equivalent f3.5mm camera angle), when combined with a f35mm lens, then there will be a considerable part of the light is in the lens The visual field, that is part of the infrared light is wasted. In general,
They is consistent between the view to infrared light and the camera’s perspective，in this way
effect Is the best. For example，Ledlightmake’s infrared lamp and emission angle of the lamp is used to represent the focal length of the lens. The HK-4.2W-16 infrared lamp, The implication is that: “-4.2W” means the lamp rated power is 4.2 watts; “-16″ means the launch angle of the lamp and the lens of f16mm angle is Consistent, both can be matched. Classification of the infrared lamp according to the angle, in currently including “-4″, “-8″, “-16″, “-35″ four series, were a nice match for the commonly Lens on the market。used the bigger angle of infrared light to great effect in the imaging services.so The bigger angle of ir LED not draw the effect is better. Other case，Such as corridors, because of its “narrow” features, if the angle of infrared light emission is too large, then the edge of imaging will be too bright and make The formation of “screen” phenomenon。away from the center but can not see, only a piece of white phenomenon. So, the corridor should be lens angle infrared lamp 1/2 or 1/3.

In the field of high-power LED lighting project, requires more than 100W high-power & constant-current drive power, while requiring high efficiency and power factor is high,in the current E27, B22 and GU10 lamp on the market with a LED driver power supply can not meet LED lighting engineering.High-power LED driver power supply design considerationsFrom the history of lighting, almost no use of isolation methods.the Lighting design methods than isolation drive will be affect the light drive efficiency.nor with the energy saving requirements in future, so LED lighting design is not necessarily the way to the use of isolation.The number of high-power LED series,the current flowing through the power LED is no longer confined to number of high-power white LED series。In order to meet the different needs of emission luminance, flexible driving a plurality of high-power LED can be achieved. For high-power white LED used in parallel, the class does not guarantee that the parallel branch circuit LED luminous intensity consistency. However, the same constant current source may be used a plurality of drive different parallel branches LED, thus ensuring consistency of attributes LED parallel branches, so that the light emission luminance can be solved the issue of consistency.

Near infrared, far infrared of quartz adopt a transparent or semi transparent quartz glass tube, as a shell can produce nearly infrared or far infrared radiation spectrum, in the printing machine can choose double near infrared heating lamp.Product features:
The advantage of application infrared shortwave heating technology and the MW(middle wave) heating technology.Nanometer reflective coating never fall off Adopt a photoelectric special technology of white reflective coating can be infrared heat 80%–95% concentrated reflection to the same direction,without the use of reflector, which does not need heating and object temperature decrease direction. thermal efficiency more High, save a lot of energy. Nanotechnology coating is firm, not falling, the reflectivity of high efficiency, leading technology.can choose the perfect matching for Infrared spectroscopy:to address perfect process According to the different heated object to choose different Infrared spectroscopy. more penetrating power, heating objects direct, Short heating time and simple control Infrared lamp heating speed is fast, 1 to 2 seconds can achieve 100% power output, and the cooling rapidly.Easy to control, can according to need to adjust 0-100% arbitrary power regulation.
Characteristics of the material and Combined with formulation
Selects high quality high specifications of raw materials to produce infrared lamp. with more than 6000 hours of service life Such details – - Environmental Protection – save energy Infrared lamp has the advantages of convenient installation, maintenance and use of lower cost Safe, no pollution, green environmental protection, is the ideal heating products.Product size, power, and connection schemes can be customized according to customer needs, and fitted with a mounting fastener.without heating the surrounding medium. To achieve rapid heating, the use of the production efficiency in the automated assembly line equipment more improve.

The camera’s service life is more than 10 years, whether the infrared lamp life can reach this level(10 years)? Get the correct answer before. First you must understand the infrared lamp manufacturing principle At present, there are mainly three kinds of infrared lamp manufacturing model:1, halogen lamp: 2, multi chip LED, 3, Single chip LED. Halogen lamp is a traditional technology, high energy consumption, high quantity of heat, short service life, because of its low efficiency, evaluation Meter will gradually fade out of the IR LED market.Multi chip LED also has two kinds of forms, one kind is contains 4 to 8 LED chips; another is the array type light-emitting chip, containing 10 to 30 LED chips Why do the chip? Some theory from manufacturers: infrared lamp irradiation distance is not enough because the energy is not enough, more chip set Together, of course, energy is high, the farther the distance requires more energy,But the camera not can receive all infrared lighting.Multi chip LED due to inherent shortcomings of structure that does not light focus, emitting optical system is not reasonable, useful optical efficiency is relatively low (However, several times stronger than halogen lamps), its advantage is not effectively play out. For example, the array type LED, current up to 1000mA above, basically only A penny coin size, heat dissipation becomes a problem. LED is most afraid of fever, At the same time, multi chip LED Production requirements are very strict, each chip can have a little difference in performance, or a chip broken will be draw all finished Overall,compared with the single chip LED, multi chip LED service life is not enough Single chip LED has the advantages of simple production process, quality easy to guarantee, low heat, light emitting optical system is reasonable, In theory Single chip LED is the ideal device as the infrared lamp, the service life can reach more than 100000 hours. So, Is it right? All single chip LED lamp life is very good?

In fact, the answer is inaccurate. Are there were many reasons for this, such as some LED chip level is very low, high impurity; some production Technology doesn’t pass, leakage phenomenon; some super power use, rated at 20mA, but the use of 50mA or above; have no protection circuit, or the circuit design unreasonable, all these will lead to single chip LED of infrared light fast broken.

If you want to ensure that the infrared lamp service life,
First to choice the LED chip of high grade，High grade chips with high power and good consistency, luminous efficiency High heat is very small, a higher level quality of LED is 10 times than normal LED quality，of course, the price is very expensive.
Secondly, the optical system design Meter should be reasonable, luminous uniformity, higher utilization rate, heat dissipation is faster.

Third, we must strictly control the working voltage. LED is very sensitive to voltage, LED tube core will be burned when Voltage slightly higher; and the voltage slightly low luminous quantity will be greatly reduced. The best matching switch power supply of high quality, AC transmission Into the best voltage from 170 Volts to 270 volts can do better regulated power supply, suitable for harsh environment.

Fourth, the input power supply line selection of resistant high / low temperature is Good, and super soft bending. There is a manufacturer of infrared lamp and input power line can be work at 60 degrees below zero and high Temperature 250 degrees above, this product is worthy of trust.