This kind of laser pointer has multiple functions

 This kind of laser pointer  has multiple functions.
For example, in laser treatment, there is laser effective dose, ineffective dose and risk (destruction) dose thresholds problem; breeding experiments in the laser, there is a good choice increased yield and resistance to pests and strong theme among the best laser dose; in the laser protection work, in order to ensure personal safety, especially to find out the laser damage thresholds of the human eye problem; in laser fusion, the energy needed to play the neutron number, in order to achieve thermonuclear reaction, and so on. These require accurate measurement of laser energy, there is no accurate measurement of laser energy to reach the intended purpose of the study. Therefore, the accurate measurement of laser energy becomes increasingly important [2]. The powerful function of laser pointer  is the selling point of this kind of laser pointer  .
With the continuous development of laser technology, laser energy measurement tools (instruments) are constantly improved and updated. The early sixties, the laser appeared, people have used the lens to focus the laser beam penetrated to estimate how much laser energy blade, which is very rough determination of the laser energy. Was made of carbon graphite struggle to receive energy laser energy meter, with the galvanometer to show the laser energy, this is not the precise determination of the laser energy. Especially for high-power laser, because its power density is high, made of carbon graphite surface energy meter bucket can easily be broken laser. There are some commonly used tests of laser pulse energy is to use the energy card account, and its working principle is to convert light energy into heat energy, by measuring the temperature change caused by heat and light energy to achieve the measurement. The color difference of laser pointer  is not obvious.
But when the laser pulse energy is low, the temperature change is extremely small, and are subject to significant environmental impacts, this approach can not achieve accurate measurements. For most sensors, since the injury may not be directly measured by high-energy laser beam, so the need to obtain samples of low-power beam. In addition, to meet the requirements of real-time monitoring of laser, but also the need for beam sampling. Beam sampling not only the need to ensure that the sample beam intensity below the damage threshold monitoring sensors, but also need to ensure that the sample beam geometry, the wave front, polarization, spectral characteristics and temporal characteristics and other aspects of fidelity. The quality inspection should be performed for all kinds of laser pointer  . 
When the ambient temperature is high (> 30 ℃), the cooling temperature, the lower limit were set to 30 ℃, 25 ℃. When the ambient temperature is high (<30 ℃), the cooling temperature, the lower limit were set to 28 ℃, 23 ℃. Laser cooling system boot up to 3 minutes before opening the laser power. Laser cooling system compressor to be stopped, before cooling off the laser power. Control panel shown in Figure 3-1-4, the laser power control panel shown in Figure 3-1-1. Laser tag in addition to text and graphics are clear and beautiful performance of the equipment itself, but depends largely on the method of laser marking process is appropriate to take. The following description is from the impact of several aspects of the effect of laser tag related factors. This kind of laser pointer  has the strong visible feature.