• The role of anti blue light glasses

    The role of anti blue light glasses

    Blue light blocking glasses are glasses that prevent blue light from irritating the eyes. Special anti-blue light glasses can effectively isolate ultraviolet and radiation and can filter blue light, suitable for watching computer or TV mobile phone use Anti-blue light glasses can effectively redu...
    Read more
  • The basics of glasses

    The basics of glasses

    1:lasses do not go to wear for a while, this will cause the retina to the lens for a while clear, for a while fuzzy activity will cause frequent degree rise. 2: can not squint eyes, can not see the words of squint eyes 3: wear a long time can be appropriate to take off to look at the distance for...
    Read more
  • Can wearing glasses let an eye deform?

    Can wearing glasses let an eye deform?

    In daily life, we often think that wearing glasses will cause the eyeball to deform, but it is not the case.  The purpose of wearing glasses is to let us see things more clearly and to some extent to relieve eye strain.  Personal unhealthy use eye habit is really the factor that causes myopia deg...
    Read more
  • The benefits of different colours of Photochromic lens

    The benefits of different colours of Photochromic lens

    1. Gray lens: can absorb infrared rays and 98% of ultraviolet rays. The great advantage of the gray lens is that it will not change the original color of the scene due to the lens, and the great satisfaction is that it can very effectively reduce the light intensity. The gray lens can evenly abso...
    Read more
  • knowledge of reading glasses

    knowledge of reading glasses

    What lens is good for reading glasses? 1. Under normal circumstances, the material of reading glasses should be made of metal, because only spectacle frames of this material will be better than those of ordinary materials, with strong corrosion resistance and strong impact resistance Generally sp...
    Read more
  • Wearing effect of polarized glasses

    Wearing effect of polarized glasses

    Polarized glasses provide another mechanism to protect the eyes. The reflected light from the asphalt road is relatively special polarized light.The difference between this reflected light and the light directly from the sun or any artificial light source lies in the problem of order. Polarized l...
    Read more
  • Inspection of sunglasses

    Inspection of sunglasses

    1. The principle of lens UV transmittance detection The transmittance measurement of sunglasses lenses cannot be processed as a simple average of the spectral transmittance at each wavelength, but should be obtained by weighted integration of the spectral transmittance according to the weight of ...
    Read more
  • Injection frame of eyewear

    Injection frame of eyewear

    1. Injection  material The injection molding process is to melt the plastic rice (mainly PC, plastic steel, TR), and inject it into the mold for cooling. The advantages are high dimensional stability of the whole batch, fast processing speed, and low overall cost. The disadvantage is that most of...
    Read more
  • Metal materials for spectacle frames

    Metal materials for spectacle frames

    1. Gold-enhanced material: It takes a golden silk as the basis, and its surface is covered with a layer of open (K) gold. There are two colors of open gold: white gold and yellow gold. A. gold This is a golden metal with good ductility and almost no oxidative discoloration. Since pure gold (24K) ...
    Read more
  • How to choose the right sunglasses?

    How to choose the right sunglasses?

    1)All sunglasses are anti-ultraviolet. Not all sunglasses are anti-ultraviolet. If you wear “sunglasses” that are not anti-ultraviolet, the lenses are too dark. In order to see things clearly, the pupils will naturally enlarge, and more ultraviolet rays will enter the eyes and the eyes will be af...
    Read more
  • Tips on using sunglasses

    Tips on using sunglasses

    1) Under normal circumstances, 8-40% of the light can penetrate sunglasses. Most people choose 15-25% sunglasses. Outdoors, most color-changing glasses are in this range, but the light transmittance of glasses from different manufacturers is different. Darker color changing glasses can penetrate ...
    Read more
  • Knowledge of glasses lenses

    Knowledge of glasses lenses

    1. What kinds of lens materials are there? Natural materials: crystal stone, high hardness, not easy to grind, can transmit ultraviolet rays, and has birefringence. Artificial materials: including inorganic glass, organic glass and optical resin. Inorganic glass: It is smelted from silica, calciu...
    Read more
12 Next > >> Page 1 / 2