This kind of green laser pointer is of very good the most ability

This kind of green laser pointer is of very good the most ability.
Produce laser light source, light sources and the general significantly different. Such as ordinary incandescent tungsten filament light source is heated by the current of atoms to the excited state, in the excited states of atoms continuously emitting radiation spontaneously. This common source of great scattering and diffuse, we can not control the formation of focused beam, it can not be used in laser printers. Laser beam laser printer needs must have the following characteristics: high directivity. The beam of light at a certain distance without scattering and diffuse. High monochromaticity. White light from the seven-color light component. High brightness, and conducive to the beam with a high concentration of physical energy. High coherence, easy stacking and separation. Laser light source is a laser scanning system, with good direction, color and strong, coherent and high energy concentration, ease of modulation and deflection characteristics. Early production of laser printers use more helium - neon (He-Ne) gas laser, the wavelength of 632.8μm, which is characterized by high output power, size, long life (typically greater than 10,000 hours), reliable performance, low noise, high output power. But because the volume is too large, and now basically obsolete. Modern laser printers using semiconductor lasers, gallium arsenic is common - gallium aluminum arsenide (CaAs-CaAlAs) series, the laser beam emitted near-infrared wavelength is generally (λ = 780μm), with the wavelength sensitivity of the photosensitive drum features to match.  You can input part of the paper tape or floppy disk, but also accept input from the communication system. Information processing part of the operating console, computer and hard disk drive components, enter the code and operational control in accordance with instructions, complete control, scheduling, schedule and exposure to fight four major programs, and control of the whole play, directing, scheduling and monitoring the role. Laser scan records in part by the laser line scan plane by the host computer records the output of the lattice-shaped handle information. The business area is now unable to do without green laser pointer. By a helium-neon laser output of the laser beam into the acousto-optic modulator output contains character information, a light beam as recorded by the neutral filter adjusted to fit a variety of photographic film by the energy, and then the beam expander allows the beam collimation, and then projected onto the cone-shaped multi-faceted rotating mirror reflected on the scanner; but also by the wide-angle lens, focusing light spot formed on the photosensitive material to scan along the X, and transportation agencies to promote the film for the Y displacement, a combination of text image. The advantage is a laser beam line is good, Resolving power of up to 400 lines per cm or more, the character of high-definition; discharge of character but not a single full-page.
Equipped with a laser-guided devices, can automatically guide the bomb targets. green laser pointer has developed into a pint-sized high-tech instrument. With a long range, high accuracy, very powerful and strong resistance to electronic interference. Projection, it is the use of set-top laser illuminator, laser beam irradiation first goal, after reflection by the target, a bomb mounted on the head by a laser seeker to receive, and then by the formation of photoelectric conversion signal, the control input bomb bay , rudder deflection control bombs, guided bombs hit the targets. Laser-guided bombs in ordinary weather conditions to capture the target rate, in case of rain, fog, dust, water to reduce accuracy.