page_about
  • PC diaphragm used as lens to become mainstream? What are the benefits of PC lenses?

    PC diaphragm used as lens to become mainstream? What are the benefits of PC lenses?

    Polycarbonate (PC), also known as PC plastic; It is a polymer containing carbonate group in the molecular chain. According to the structure of ester group, it can be divided into aliphatic group, aromatic group, aliphatic group - aromatic group and other types. PC lens m...
    Read more
  • How do 3D glasses for 3D movies work? What are the classifications of 3D glasses?

    How do 3D glasses for 3D movies work? What are the classifications of 3D glasses?

    Why do you wear 3D glasses to watch 3D movies? When shooting the film need to wear 3 d glasses is in some ways, people see objects of the stereo effect, because the 3 d film with two cameras, and simulate human two eyes, let the eye is a camera picture, in the right eye ...
    Read more
  • Anti-blue light and anti-blue light lens

    Anti-blue light and anti-blue light lens

    We refer to the light that the human eye can see as visible light, that is, "red orange yellow green blue blue purple". According to most national standards, visible light in the wavelength range of 400-500 nm is called blue light, which is the shortest wavelength and th...
    Read more
  • How do 3D glasses create a three-dimensional effect?

    How do 3D glasses create a three-dimensional effect?

    How do 3D glasses create a three-dimensional effect? There are actually many types of 3D glasses, but the principle of creating a three-dimensional effect is the same. The reason why the human eye can feel the three-dimensional sense is because the left and right eyes o...
    Read more
  • Progressive lenses for vision over 40

    Progressive lenses for vision over 40

    Progressive lenses for vision over 40 After age 40, no one likes to advertise their age — especially when you start having trouble reading fine print. Thankfully, today’s progressive eyeglass lenses make it impossible for others to tell you’ve reached “bifocal age.” Progr...
    Read more
  • Prevent blue light glasses can protect an eye, still can prevent myopic? Attention! It’s not for everyone…

    Prevent blue light glasses can protect an eye, still can prevent myopic? Attention! It’s not for everyone…

    I'm sure you've heard of blue-blocking glasses, right? Many people need to work with mobile phones and computers for a long time, specially equipped with anti-blue light glasses; Many parents heard that this kind of glasses can prevent myopia, have prepared a pair for th...
    Read more
  • 4 Common Lens Coatings for Glasses

    4 Common Lens Coatings for Glasses

    Lens coatings are applied to eyeglass lenses to enhance the durability, performance and appearance of your glasses. This is true whether you wear single vision, bifocal or progressive lenses. Anti-Scratch Coating No eyeglass lenses — not even glass lenses — are 100% scratch-proof. However, lenses...
    Read more
  • The physics of 3D glasses

    The physics of 3D glasses

    3D glasses, also known as "stereoscopic glasses," are special glasses that can be used to view 3D images or images. Stereoscopic glasses are divided into many color types, more common is red blue and red blue. The idea is to allow both eyes to see only one of two images ...
    Read more
  • How to choose the correct refractive index of lens?

    How to choose the correct refractive index of lens?

    When selecting the lens, there will be 1.56, 1.61, 1.67, 1.74 and other values to choose, this value refers to the refractive index of the lens. The higher the refractive index of the lens, the thinner the lens is and the harder the lens is. Of course, the higher the ref...
    Read more
  • Introduction and Principle of Photochromic lenses

    Sun Sensitive Color Changing Photochromic Pigment Photochromic lenses are produced by mixing photochromic pigments with lens monomer and then injecting it into a mold. Photochromic pigment is a specialty designed powder to change color when exposed to a UV light source, but reacts best to direct ...
    Read more
  • IMAX, DOLBY… What’s the difference

    IMAX Not all IMAX are “IMAX LASER”, IMAX Digital VS Laser IMAX has its own process from filming to screening, which guarantees the highest degree of viewing quality. IMAX has a new technology, larger screens, higher sound levels, and more color options. “Standard IMAX” e...
    Read more
  • Lens material, understanding why your lenses are thick or thin

    Glass lenses. In the early days of vision correction, all eyeglass lenses were made of glass. The main material for glass lenses is optical glass. The refractive index is higher than that of resin lens, so glass lens is thinner than resin lens in the same power. The refractive index of glass lens...
    Read more
12 Next > >> Page 1 / 2