laser pointer has been revised and renewed

Here will introduce what the 3000 hour life time of laser pointer means
Antenna is an optical telescope; the receiver using various forms of photodetectors such as photomultiplier tubes, semiconductor photodiodes, avalanche photodiodes, infrared and visible light, multi-detector parts. The lidar uses pulsed or continuous wave two kinds of work, the detection method points to the direct detection and heterodyne detection. The laser weapon is a directional emission of the laser beam directly damage the target, or the failure of directed energy weapons. Depending on the operational use, the laser weapons can be divided into two major categories of tactical laser weapons and strategic laser weapons. Weapon system by the laser and tracking, targeting, launchers and other components, the commonly used laser chemical lasers, solid-state lasers, CO2 lasers. For example, the customer can customize that the total output power of laser pointer .
Laser treatment of vascular skin diseases is the selective absorption of oxygenated hemoglobin in a certain wavelength of laser, which led to a high degree of destruction of the vascular tissue with a high degree of accuracy and security, will not affect the surrounding adjacent tissue. Therefore, the laser treatment of telangiectasia is a significant effect. In addition, because the variable pulsed laser have been brought forth, are not satisfied with tattoo removal, as well as various types of pigmented skin lesions such as nevus of Ota, the treatment of senile plaques is a major breakthrough. The type of laser selective photothermolysis effect theory (ie, different wavelengths of laser selectively act on different colors of skin damage). Using its powerful instant power.  laser pointer  has been revised and renewed. 
At the same time, according to the firing position can be divided into space-based, land-based, carrier-based. The type of vehicle, and airborne, its uses can be divided into tactical and strategic categories. Tactical laser weapons put down the use of laser as the energy as conventional weapons, as the direct killing of enemy personnel, destroying tanks, aircraft, combat distance generally up to 20 km. The main representative of such weapons have laser guns and laser guns, they can send a strong laser beam to strike the enemy. In March 1978, the world's first laser guns in the United States was born. The laser gun style with ordinary rifle is not much different from the four major components: lasers, actuators, firing and rifle butts.
The high brightness of the laser to illuminate distant objects. Ruby laser beam emitted illumination on the moon is about 0.02 lux (light intensity units), bright red color, visible laser spot. If the illumination power of the strongest searchlights Moon, resulting in only about one trillion one-Lux, the human eye can not detect. Laser brightness very high mainly due to directional light. The large number of photons is concentrated in a very small space within the injection, the natural high energy density. The color of the light by the light's wavelength (or frequency) decision. The wavelength corresponds to a certain color.