Chemical coating method: 70 years back, coating method based largely on chemical reactions. This approach should strictly control the concentration of chemical solution, a combination of cross-linking agent, reaction time and circumstances. Yield and quality acquired, the Senate flaw missing, because, only set production. Commonly used processing method: a method for the swim, and another was treating method. For dipping method is based on the configuration attributes of the membrane preparation containing components of cool Bell Ross BR02 watches the solution, and then the glass heated to a certain temperature, great chemical solution in to the configuration, the out, drying, dip coating method can just only make two-mask the method. But a number of the lens design does not need double mask. Therefore, one other side must be cleaned, environmental load and increased prices. Still another deposition method, the perfect solution is would be to change a good picture attached to the rifle, Zinc oxide spray the surface of the glass, drying, and stereotypes. Glass carrier could be shifted or turned in order to increase film uniformity. May be plated double-sided or single-sided. Extension of this method of individuals there's a denial solution method. Falls of the solution to the lens center, high-speed rotation of the lens using centrifugal force, the solution is even "throw" on the surface. To the present viewpoint, the advantages of chemical coating, in its expense in equipment is low, so it is still a standard normal movie coating and low-cost method.
Physical coating method: chemical planning with a low cost, the benefits of easy operation, but in addition the relative pollution, not the shortcomings of multi-layer coating. Change to a brand new generation of physically coating engineering to vacuum evaporation, ion plating and other various forms. Physically power and uniformity of coating is normally higher than chemical coating, chemical coating layers with less physical methods to the more (because of multi-layer coating, the temperature and chemistry can influence the physical properties of top of the Vacheron Constantin Malte Replica Watches membrane ).
So that you can meet the requirements of photography, the contact is often essential to modern multi-layer covered on the film. Various features of the filters may be generally split into seven categories: antireflective film, echoing film, filtration membrane, polarized film, protective film and the membrane. The present day multi-layer technology can be generally traced back once again to 1971 by Asahi (PENTAX) Optics created SMC (super multi-layer) technology, in 1971, the effective use of this technology Takumar lenses in several big photography event spotlight. Nikon had been a coating technology, Titanium dioxide coating technology in a lot more than five theoretically possible. Japan's Canon and German Leitz (Leica's precursor) is also related to the positive development of coating technology, but the control of 7-layer coating remains extremely tough to break through the bottleneck! The other hand, FujiFilm stated they created EBC coating e-beam (electron-beam coating) claims around 11 levels! till Asahi (PENTAX) published right after the SMC technology, FujiFILM will quickly EBC finish technology into the production of final lenses.
Asahi's Breguet Reine de Naples Automatic Watch major sources of technology acquired from OCLI (Optical Coatings Laboratories Inc.), They modeled the multi-layer coating technology, improve and develop its technology and the cost get a grip on within the appropriate range. SMC as a point in photographic optics, which allows the development of modern wide-angle lens and ultra-long zoom lens possible. Asahi scientific discoveries, Magnesia so lots of the major camera manufacturers, including Zeiss, Nikon and Canon need certainly to pay licensing fees to utilize some or most of the Asahi engineering. Asahi's achievement, so that multi-layer contact has a new title change: Before, SC, said single-layer covering, TLC for the increase, SMC PENTAX engineering for the multi-layer, then there are multi-layer transparent membrane MC and SSC progress. EBC has been employed as Fuji is its trademark.
From the coating background, despite SMC's technology is quite attractive, but think about the maturity of less than Leica, hasn't been quickly set. In fact, in accordance with Maurizio Micci Fotografare 1974, written by the journal - an assessment check contact sparkle, are available in Super-Takumar> MC Takumar> EBC Fujinon glare evaluation, in fact, just the SMC Takumars score greater than Super-Takumars a little bit. In order to understand the LEICA consideration is not without reason. Since 1972, LEICA has been devoted to reducing the subject of optical lenses and other reports to control the glare until 1978 suddenly changed its initial place started to use multi-layer level technology. To a difficult coating 1981, and Fuji, since the development of a generation of electron beam coating technology, otherwise known. (Japan Fuji EBC reflect light improperly, also launched in 1981, Super EBC improved technology, still used ).