In addition to thedevelopment of science and technology, laser goggles also with more and morehigh-tech, it is also evolving, but who knows his history of development? Herewe look at the laser With the development of materials technology, manufacturingtechnology and optoelectronic technology, new materials, new technologies andnew technologies are emerging and are continuously applied to the manufactureof Laser safety glasses.
BeijingYige Optoelectronics Technology Co., Ltd. adopted a new process, the substratecoated with bright light on the VO2 film, made a broad spectrum anti-stronglaser laser goggles; and as LWTutt et al used non-linear scattering Program,greatly improving the laser protection lens laser damage threshold and so on.
Currentlyused, based on linear optical principles of laser protection mirror, whether itis absorption type, reflective type, or complex type, most of them can only bein a specific wavelength, and some can only be in a wavelength Play aprotective role. With the increase in the spectral line, coupled with the enemycan not predict what kind of use of the laser source, in combat theseprotective equipment ashamed to play a role, and sometimes even ineffective. Inorder to deal with the increasing number of laser lines, laser goggles arerequired to be able to protect the human eye at more laser lines. Some lasergoggles, such as the US Army Natick Development Center developed a standardlaser goggles, can be 8 wavelengths for laser protection. Thus representing thedevelopment direction of laser goggles.
Withthe emergence and application of wide-band tunable lasers and the increase inoptical power of laser weapons, the current laser goggles may fail due toexcessive laser power or laser wavelengths that are not the protectivewavelength of the filter. The use of nonlinear optics and nonlinear opticalmaterials to create optical switches and limiters, can handle any wavelength ofhigh power laser. Because these optical switches and limiting devices withbandwidth, fast response, high natural light transmittance advantages, thusrepresenting the laser goggles of another development direction.
Absorbentlaser goggles have a low total transmittance and a higher optical density atthe expense of visible light transmittance. Although the interference lasergoggles overcome these shortcomings, the wide angle is poor, with the laserincident angle Increased, easy to blue to the frequency shift and wrinkled typeof diffraction laser goggles can effectively reflect the specific wavelength ofthe laser, but also has a good visible light transmittance and wide angle.Therefore, based on the principle of linear optics developed laser protectionmirror, the wrinkled type of diffraction laser