In the car field, there is no enterprise specializes in the production of LED lamps. Only a few optoelectronic industries do the research and development in this area. The development bottleneck of domestic LED automotive lamps mainly comes from the following there aspects:(more)

In 1834, Peltier, a French physicist, found that through DC electricity one node becomes cold and the other one get hot in the closed circuit which is composed of two different metals. This effect was later named as the Peltier effect. Another name of TEC is Semiconductor refrigeration which is a kind of refrigeration method by taking advantages of the Peltier effect. The principle was shown in Figure 1. TECs consist of semiconductor thermoelectric elements (Ntype, Ptype), the metal flow deflector, ceramic disk, wherein the flow deflector is connected with the node of semiconductor thermoelectric elements. (more)

Except for being applied in the field of the refrigerator, water dispensers and other household appliances, the most important application of TEC is in the information technology field. As the cooling source of such electronic components as infrared detectors, lasers, computer chips and so on, generally, the cooling power of these devices is very small. (more)

After Edison invented the carbon incandescent lamp in 1879, lighting technology entered a new era. Reviewing the lighting history of the twentieth Century, people found out many new light sources, such as fluorescent lamps, mercury lamps, high/low pressure sodium lamps, metal halide lamps, compact fluorescent lamps, high frequency electrode less fluorescent lamps, microwave sulfur lamps and so on. Defects of the incandescent lamp are that the bulb is fragile, and it is easy to get an electric shock and power consumption of the tungsten wire is high under the condition of heating. Although fluorescent lamps save more energy than incandescent lamps, but it is not good for human vision and the mercury in the lamp tube is harmful to human body and environment. LED causes qualitative changes of lighting technology. Compared with the traditional lighting technology, LED is a semiconductor, which can convert electrical energy into visible light. LED belongs to the solid cold light source. The volume of LED is small, its weight is light and the structure is also very solid. Because of low working voltage, service life of LED is long. In accordance with the definition of light effect, LED luminous efficiency is not high, but because almost all of the LED spectra concentrate in the visible light spectrum, the efficiency can reach 80%~90%. However, visible efficiency of incandescent lamp of the same light effect is only 10%~20%. Generally, the power of the monomer LED is 0.05~1W and LED can meet different needs through the cluster mode.(more)

There are many kinds of heat sinks. In the view of manufacture, air cooled heat sinks can be divided into nano imprint lithography fins, extrusion heat sinks, casting heat sinks, folding heat sinks, improved casting heat sinks, forging heat sinks, cutting heat sinks, mechanical processing heat sinks and so on.(more)

As the active area of the LED chip is small and its working current is big, the operating temperature of the LED ship can increase in a short time. The rise of pn junction temperature of LED can make the optical output power decrease, accelerate the aging of a chip, and shorten the service life of the device. With the rise in junction temperature, the LED wavelength will have “red shift”. (The drift visual effect of the orange and amber LED is more obvious). So in view of adverse effects of color drift in the practical application, the thermal design will limit the highest junction temperature. In the high power LED cooling channel, the heat radiating substrate is the key link between internal and external cooling channel. It has the following functions at least.(more)

Each one has its specific temperature. For example, my temperature is 36.5℃. If my temperature changes more than 0.1℃, I will get sick. Just like people, laser also has the specific temperature when it is working. If the temperature of laser changes more than 0.1℃, it will not work normally, and we cannot get the result what we would like to have. So we need to control the laser’s temperature seriously. We offer you the best devices to control the laser temperature. (more)

Because of LED's advantages, LED is mainly used in the following aspects currently(more)

Heat sinks are a device which is used to dissipate heat of electronic elements in electrical appliances. There are many kinds of heat sink materials. The following describes are about the aluminum, copper and combinative radiation fins of copper and aluminum.(more)

Although the two cooling systems comply with the same thermal dynamics, a TEC has many obvious advantages: simple structure, small volume, light weight, high reliability, long service lifetime, no noise, small power consumption, low cost and so on. What’s more, there is no need for TECs to fill chemical consumables, which the mechanical cooling method needs. Because of no moving parts, there is no wear and tear for TECs. Thus TEC is an ideal cooling method, which can gradually take the place of the mechanical cooling method when cooling many components (such as CCD).(more)