The exact height of battery of green laser pointer is 65±2.0mm

Photonics, electronics, mechanical and electrical, mechanical, electronic, chemical and chemical related professional undergraduate and graduate students. Familiar with the knowledge of the Applied Optics and Optical software use; familiar with the process of optoelectronic products, works. Master the knowledge of the technology applications of optoelectronic products and processes. 3, familiar with the electronic power base circuit, electronic circuit and system design, commissioning experience; familiar with the use of a variety of electronic instrumentation. Familiar with the process of crystal production, works and production technology, application of knowledge. To master the theory of crystal growth, and have good research and practical ability. To understand the crystal testing means and Proficiency Test Equipment. Of course, the green laser beam light of   green laser pointer     has some shortcomings compared with other kinds of laser beam lights of the laser pointer.
Has a strong drawing, MAP READING ABILITY, master solidwork, office and other related computer software applications. Has a strong English reading and writing ability. Laser Power Supply Engineer: Bachelor degree or above, electricity or electronics related professionals. More than three years the field of switching power supply design experience, familiar with a variety of ac-dc, dc-dc circuit structure and principles, with a solid mathematical basis of analog circuits, analog circuit has a profound understanding of a profound understanding of the switching power supply, for switching power supply installation certification and emc standards requirements. Able to finish the single-arm, multi-output power supply design or module power supply design. Independently of the switching power supply design and production of the whole process, from project identification, circuit design, component selection, circuit testing and debugging, pcb board design, and electrical performance testing. The battery is especially used by some  usa green laser pointer    of the specific specification.
Familiar with the switching power supply performance requirements and test requirements, writing of new products related documents. Id power supply design experience staff priority. Laser Safety. The potential hazards of the laser. The laser beam hazards. Laser to produce high strength and high directionality of the beam. If directed, reflected or focused upon an object, the laser will be partially absorbed, will make the surface or the internal temperature rises, causing local changes or deformation of the materials. The body of the laser output is vulnerable, exposed in front of the laser can cause eye and skin injury in a particular environment. The application of laser in medicine has been expanded, and applications are expanding, such as not pay attention to the safety of the laser in the application process, it may cause accidental injury. Actually, Li of battery of  green laser pointer  is a kind of metallic element.
Laser damage to the eyes. The role of the wavelength of the eye. Laser damage, the most serious damage to the body in the eye. Wavelength of about 400nm (violet) to 1400nm (near infrared) laser, the absorption rate of the refractive medium low transmission rate, and the ability to focus (ie, concentrating power) of the refractive media. High intensity visible or near infrared light enters the eye through the refractive media of the human eye, the accumulation of light in the retina. The laser energy density and power density in the retina to several thousand or even several times, a lot of light on the retina at the moment poly Retinal photoreceptor cell layer and temperature increases, as well as coagulation necrosis of photoreceptor cells but lost the role of the photoreceptor. Some batteries adopt LiMno as the positive pole material of the battery of  green laser pointer    .
Laser together in the photoreceptor cells of protein coagulation caused by the overheating of degeneration is not reversible damage. Once the damage after it will cause permanent blindness of the eye. The laser wavelength, the different extent of the role of the eye, its consequences are also different. The far-infrared laser (wavelength longer than 1900nm) damage to the eye to the cornea, it is because this type of wavelength of the laser is almost entirely absorbed by the cornea, corneal damage are the most important, the main cause of keratitis and conjunctivitis. UV laser (wavelength 315-400nm), is almost entirely absorbed by the eye's lens while COSCO (wavelength shorter than 315nm) to corneal absorption, which can be caused by the lens and corneal opacities. And the exact height of battery of  green laser pointer is 65±2.0mm.