The quality and performance of green laser pointer

After 30 years of development, military laser range finder has been updated for two generations, research and development of three generations. The first generation of laser range finder, infrared ruby laser emission 0.6943um and photomultiplier tube detector, because of concealment of low efficiency, bulky, heavy weight, low power consumption will soon be replaced by second-generation laser rangefinder . Second-generation laser rangefinder using near-infrared emission 1.06um Nd laser and silicon photodiode or silicon avalanche photodiode detector is better than the first generation of concealment, high efficiency, compact, low power consumption, second-generation laser ranging The small machine development has progressed rapidly. The third-generation laser range finder, eye-safe laser rangefinder. It is the location of   green laser pointer they are supposed to use.
Has been developed into various models of three different types of operating wavelength 10.6um and 1.54um eye-safe laser rangefinder, has entered the production and application stages. At the same time, the laser ranging technology is gradually applied to the civil field. Lasted nearly 30 years since the early 1970s, many foreign universities, research institutions and companies have carried out research in this area. The earliest study of Finland Oulu University electrical engineering and the Finnish technical research center, research from the various sub-systems to the machine and its applications, and applied research carried out jointly with several well-known companies in the United States, Russia, and its products involving industrial, aerospace, marine and robot vision, and many other aspects. The customer stores  green laser pointer in the good condition.
There are a number of well-known companies in the United States carried out the research in this area, Schwartz Electro-Optics laser wave measuring device developed for the U.S. national data center, for unattended waves measuring stations; developed for the United States Federal Government Highway Administration automatic laser sensing system for vehicle speed and altitude measurements. Specially designed in 1992 in Atlanta, USA laser company for the police hand-held eye-safe laser diode rangefinder for ranging and speed of vehicles. Over the last decade, there are several U.S. companies to carry out research in this area reported. In 1996, the United States Bushnell launched the 400 LD laser range finder Yardaga400 ranging capability of 400m, was named one of the world's 100 major scientific and technological achievements in 1997, then introduced the ranging capability of 500m-1000m series laser ranging machine. It will take much time and personnel to test the quality and performance of  green laser pointer .
1998 U.S. Tasoc companies ranging capability for 800 yards cameras the type Laserstie of LD laser range finder. U.S. LaserTech Leica launched in recent years ranging capability of 1000 meters, one meter accuracy handheld Shandong University of Science and Technology bachelor's degree thesis introduction telescope rangefinder. Since 1995, the international eye-safe semiconductor laser ranging technology development very quickly, has launched a wavelength within the 800-900nm range, the peak power of 10W, pulse width of 20-50ns, repetition rate of 1-10kHz, measuring the distance 10m-1km of the laser range finder [4]. It will take a lot to perform the quality control process of  green laser pointer .
The laser rangefinder prototype research began in the 1980s, is developed on the basis of the original solid, gas laser rangefinder. At present, CASIC 58 1983, developed a measurement range 200m, accuracy of ± 0.5m, the repetition rate of 100Hz laser range finder. Shanghai Institute of Optics and Fine Mechanics in 1996 developed a portable semiconductor laser range finder, the operating wavelength of 800-900nm, the diffuse reflectance of the concrete wall ranging up to 100m, using 300MHz counting mode, the distance measurement accuracy of ± 0.5m, the repetition frequency of 1kHz. China Institute of Metrology, 1999, Department of Information Engineering optoelectronics and abroad to develop low-cost, portable semiconductor laser range finder, the operating wavelength of 905nm, the role of distance measuring 1 km, the repetition frequency of 100Hz, accuracy of <± 1m, in Shanghai, fourth won the Silver Award in Science and Technology Fair. If the quantity of the order of  green laser pointer  is too large.