Green green laser pointer emits green light directly through  semiconductor laser
Green laser module technology used, the material has a high demand, the price of more expensive materials, production of the factory is relatively small, so the cost is relatively high.
Green than red flip flip pen pen expensive, mainly because of green flip pen green laser module using flip than the red pen red laser modules used in a lot more expensive.green laser pointerhas the function good for energy saving.
V. receivers with and without u u disk drive difference
U disk with the receiver: the receiver both as U disk, but also when the receiver.
U disk without the receiver: the receiver only when the receiver.
U disk itself is not the receiver. Receiver with U disk is based on the receiver chip built-in storage, realize U disc function.
Six laser power and the relationship between color overview
More laser power, output power they need to build on the same basis. This kind of green laser pointeris good for equipment maintenance.Then, the laser power of decision to the following aspects:
1 divergence angle: this is better understood, the greater the divergence angle, and its range of more recent. Therefore, the low divergence of the laser in the long-range destruction on a decisive advantage. In general, when light-emitting area of the same, the longer the wavelength, the greater the divergence angle. Therefore, more red than the infrared long-range advantage. However, due to the existence of different mechanisms of laser-produced difference, so when the power is the same, they are very difficult to light the same area. The maintenance can prolong the life time of green laser pointer.For example, infrared light-emitting area 808 will be much larger than the 980, so in the same power, the divergence angle of 808 would be bigger than 980.
2 Focus limit: with long-range corresponding to the close focus is killing. When the laser parallel to the same degree, different wavelengths of laser have different focus limit, such as 10640 far-infrared laser focus limit is about 532 green 20 times, in other words, the same power, the 532 in the unit area of radiated power is 10 640 20 times, the gap is quite large. In general, the longer the wavelength of the laser, the Focus on the limit will be greater.
3 with the penetrating heat effect: laser destruction, mainly energy density. Therefore, the lower penetration of the laser, the energy density can have a better performance. However, the laser wavelength and penetration, and there is no absolute relationship between, such as air, the visible range is the longer the wavelength the stronger penetration. green laser pointercan be controlled in groups.But in the long-wave infrared stage, it has significant thermal effects, so it's penetrating to become weak. Glass is also true, CO2 laser can be carved glass, but the 532 laser can not. So, for this, should first understand the characteristics of the target material impact on the penetration of various wavelengths.
4 absorption: this is very important, different colors of objects on the various wavelengths of laser absorptive capacity has a very significant difference. green laser pointercan be controlled point to point.With the absorption of the worst color, and white; by the absorption of the most obvious anti-color, and black rather.
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