Editorial Note 2013101524 There are 2 pages only of description An electric laser Technical field This invention involves a device case and especially involves an electric laser. Background technology The device case is a component which utilizes stimulated radiation principle to make light amplify in some stimulated substances or vibrate for emission. Red, green, blue and green fiber laser with visible wavelength uses light and electricity and other means to stimulate substances so that some particles are stimulated to high energy state. When the number of the particles in such state is more than that of the particles in low-energy state, due to stimulated radiation, the substances will amplify optical radiation for the wave with certain length. In other words, the optical radiation with such wave length will send out optical radiation with amplified strength which is consistent with the position, frequency and direction of the incoming light wave when passing through the substances. This is called laser amplifier. If the stimulated substance is placed in the resonant cavity, optical radiation reflects and spreads back and forth along the axis in the resonant cavity. After passing through the substance many times, optical radiation is amplified many times to form a beam of light beam laser with heavy intensity ad concentrated direction. This is laser oscillator. The total solid device case of laser diode pump has the advantages of high efficiency, compact structure, high beam quality, stable performance and long service life. Thus, it receives more and more attention. It is especially widely applied in such fields as single-frequency operation, spectroscopy, coherent communication, laser radar, gravitational wave detection and optical data storage. Existing device cases generally adopt external power sully to supply power for the device case. Due to the limitations in the length of the cable or power supply, in some cases, the application of such device cases is greatly restricted. Content of the invention Aiming at the problems of existing device cases in the application process, this invention comes up with an electric laser. This invention solves existing problems with the following technical proposal: An electric laser includes: laser emission head, device case, start button, brightness control button, built-in power supply, power adapter, charging port and shell. The laser emission head is installed on the top of the device case; the shell is installed at the bottom of the device case. The device case is equipped with start button and brightness control button. The start button is used to cut or switch on the power supply of the device case. The brightness control button is used to adjust the brightness of the device case.
The built-in power supply is installed in the shell at the bottom of the device case; the built-in power supply which provides power for the device case is connected with the device case. The shell is equipped with a charging port; the power adapter is connected with the built-in power supply through the charging port for charging built-in power supply. Beneficial effects of this invention are as follows: an electric laser adopts built-in power supply to provide power for the device case; meanwhile, the device case is equipped with the power adapter so that the application of the device case is not limited to the cable or power supply. This invention has simple structure, rational design, low cost and wide application prospect. Descriptions of the attached figure Figure 1 is the structure diagram of this invention. 1 Laser emission head; 2 device case; 3 start button; 4 brightness control button; 5 built-in power supply; 6 power adapter; 7 charging port; 8 shell Detailed mode of execution Further description of the invention is conducted as follows in combination of the attached figure: As shown in Figure 1, an electric laser includes: laser emission head 1, device case 2, start button 3, brightness control button 4, built-in power supply 5, power adapter 6, charging port 7 and shell 8. The laser emission head 1 is installed on the top of the device case 2; the shell 8 is installed at the bottom of the device case 2. As shown in Figure 1, the device case 2 is equipped with start button 3 and brightness control button 4. The start button 3 is used to cut or switch on the power supply of the device case. The brightness control button 4 is used to adjust the brightness of the device case. As shown in Figure 1, the built-in power supply 5 is installed in the shell 8 at the bottom of the device case 2; the built-in power supply 5 which provides power for the device case 2 is connected with the device case 2. As shown in Figure 1, the shell 8 is equipped with the charging port 7; the power adapter 6 is connected with the built-in power supply 5 through the charging port 7 for charging built-in power supply 5. An electric laser adopts built-in power supply to provide power for the device case; meanwhile, the device case is equipped with the power adapter so that the application of the device case is not limited to the cable or power supply.