Product Description:The reflection of metal mirrors is caused by the metal coating.
The metal mirror is a mirror obtained by using a thin metal coating, and the metal coating can be produced by evaporation technology or sputtering technology. As for the metal coating on the sink, it is usually glass or metal. Common metal coatings include aluminum, silver, or gold; copper, chromium, or other nickel-chromium alloys are less common. The metal coating is usually coated with one or more thin dielectric materials to protect the metal coating from oxidation or scratching. These protective coatings are more wear resistant than uncoated and more sensitive than dielectric mirrors. Careful cleaning is required at the interface between metal and optics. And metal mirrors are sensitive to humidity and corrosive gases.
Reflectivity can also be enhanced with multiple protective coatings, which result in enhanced metal coatings. At this time, the metal dielectric coating not only has the large bandwidth of the metal mirror, but also has the high reflectivity and damage threshold of the dielectric mirror.
A big advantage of metallic mirrors over dielectric mirrors is that their reflectivity is the same over a wide spectral range, independent of the angle of incidence and polarization state. Moreover, the metal reflector is simple to manufacture and relatively inexpensive. Therefore, ordinary mirrors are made of metal mirrors. Sometimes ultrashort pulses with very wide bandwidth also need to use metal mirrors, because it is difficult to obtain sufficient reflection bandwidth with dielectric mirrors. In addition, the chromatic dispersion of metal mirrors is also very weak, and the reflection phase shift has little wavelength dependence. Dielectric mirrors can work at long infrared wavelengths. In this wavelength region, it is difficult for dielectric mirrors to work because the medium has strong absorption of light at this wavelength.
First surface metal mirror and second surface metal mirror:
In the first surface metal mirror, the reflective coating is on the side of the incident light. Light passes through the coating, but does not reach the sink.
The reflective coating of the second surface metal mirror is on the other side of the sink, so the coating can be better protected. Light passes through the substrate both before and after reflection. Such mirrors are more common in home applications. Technically applied, Fresnel reflections on the first surface can be problematic (eg ghosting, power loss) and sometimes chromatic dispersion of the glass is also an issue.
Main Cooperation Materials Manufacturers: CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,C-LASER,ETC
Main Export Countries & Areas: Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.
Raytekoptics Extra value added services offered: 1). Optical workcraft & process solution design; 2). Rough processing raw materials; 3). Semi finishing raw materials; 4). Fabricate custom sizes and shapes; 5). Design and supply custom coatings; 6). Modify and resurface customer supplied materials; 7). Drill holes, notch glass and provide beveled substrates; 8). Precision polish optics with non-standard aspect ratios;
Payment Method: by T/T or Western Union. Delivery time: 7-10 days. Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offersquality warranty for our optics products with "3R" policy. For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.
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