B15 is Brown sunlens, the G15 is a grey/green sunlens, and both two sunlenses light transmittance are 15%. B15 and G15 sunlens are just different on colors.
G15 sunlens is more classic, G15 suitable for indoor and outdoors, while B15 more suitable for very much strong sunny days.
So G15 and B15 is light reduction lens, which banned 85% light and reduce overall brightness.
Polarized is just another function lenses, it can eliminate light in one direction, Polarized eyewear set a angle to eliminate reflections caused by such as water, moisture or strong light shining pavement and sandy ground, snow reflected light tec., it more suitable for driving, fishing and outdoors activities.
As professional eyewear supplier, we can produce Polarized metal eyewear, handmade acetate eyewear in various lens colors.
Usually there is a plating/painting layer on the surface of metal eyewear, there are following simple aspects to judge the plating or painting quality of metal eyewear.
Observing metal eyewear plating layer, no pitting and uneven place, if there are pits or uneven place, the quality of metal eyewear is relatively poor.
It also can try to get metal eyewear cross on white A4 paper, see if there are any fading.
Metal eyewear under the rub with fingers, or gently claw with nails, see if there are any fade or the fingers tinted with painting colors. The quality of metal eyewear better, the fade or tinted won’t occurred.
Previous article we briefly introduced how to identify painting or plating finish for metal eyewear.
As we understand generally plating finish metal eyewear more firm and compact than the painting finish metal eyewear. According the disadvantages, how to make painting metal eyewear more firm and compact?
Normally, before metal eyewear painting processing, it should be plated a layer of chrome finish first, it can make painting metal eyewear as firm and compact as plating finish metal eyewear.
Chrome finish divide into white chrome and black-chrome finish. Black or matt black metal eyewear used black chrome finish; other painting metal eyewear used white chrome finish. To take an example, White, Red, Blue, Green, Purple, Yellow etc…
Why chrome finish can make painting finish metal eyewear as firm and compact as plating finish metal eyewear?
This is because chrome finished metal eyewear surface can form a honeycomb-like structure, which greatly improved the adhesion of painting on metal eyewear. Below picture under microscope for reference.
As for a metal eyewear supplier, the disadvantage of Chrome finish metal eyewear is that it is high difficult to rework .
During the metal eyewear production, the last producing process is painting or plating finish.
Painting or Plating finish is to spray or plating a layer of protective material on the metal eyewear; it can make the metal eyewear more beautiful, shiny, and more anti-corrosion.
How to identify the metal eyewear is painting or plating finish?
Generally, metal eyewear plating only three types: gold, silver, and gun with various colors such as light, middle, and dark colors.
Except for gold, silver, and gun, all other metal eyewear colors are panting finish.
To take an example, Black, White, Red, Blue, Green, Purple, Yellow etc…
These metal eyewear colors are all painting finished.
Compared with painting metal eyewear, plating metal eyewear plating layer is more firm and compact.