Standard vs Premium Progressive Lenses: What Are Their Differences
In the above part, we have introduced some basic information about standard and premium progressive lenses. So, what are their differences? In this section, we will show them.
Compared with premium progressive lenses, standard progressive lenses require large frames. Otherwise, you will limit your near vision. On the contrary, if you prefer small and less noticeable frames, premium progressive lenses are the better choice.
Compared with premium progressive lenses, standard progressive lenses are cheaper. For most people, standard lenses are affordable.
Compared with premium progressive lenses, standard progressive lenses are suitable for most people including children.
Premium progressive lenses are customized to your eyes and offer a wider viewing area than standard lenses.
Pure Titanium Glasses Frame Brand - MARCWALKS
So far, the industrial structure of the company has been very perfect, and all the single products are very good in the overall quality. Among them, the single product of the pure titanium spectacle frame series has been recognized by the industry and consumers in terms of material and workmanship. The company enjoys a high status among consumers.The variety is complete and the price is reasonable.They ensure product quality. With a variety of operating characteristics and the principle of small profits, they won the trust of most customers.
Design principle of progressive multifocal lens
For the same piece of the lens, the top is used to see far, the bottom is used to see close. The upper and lower degrees are different.
There is not a sudden change in the distance degree fixed above the lens to the near degree fixed below the lens, but a gradual transition between the two through gradual changes in refractive power, which has special benefits over common bifocals or trifocal lenses.
Loho Driving Glasses
Loho pioneered a new M2C model in the glasses industry. Depending on flexible supply chain management, it predicts that the market trend will break the industry monopoly, directly connects with the sales terminal from the factory, removes the intermediate cost, and occupies the absolute cost-performance advantage. Loho adopts omni-channel data operation to carry out the new retail operations. It uses a comprehensive new retail operation channel digital operation. Loho cooperates with world-renowned designers to keep up with the fashion trend, giving glasses a more cost-effective brand experience, so that everyone can enjoy equal fashion.
Sales points of note for color changing lens
The discoloration rate of the lens is related to the intensity of ultraviolet light. The stronger the ultraviolet light is, the faster the discoloration rate will be, while the vice versa. The degree of discoloration is related to the ambient temperature. The higher the temperature is, the color of the lens is slightly lighter. Otherwise, the color is slightly darker. With the progress of manufacturing technology, the discoloration rate, especially the fading rate of the discoloration lens has been greatly improved, and the interference of temperature on the color depth is becoming less and less. Either glass or resin lenses react only with ultraviolet light, not visible light, so in some environments, they do not darken.
Refractive index of spectacle lens
It is generally believed that the higher the refractive index, the better the spectacle lens. Such spectacle lenses are relatively thin, and of course, the price is a bit expensive. When the refractive index increases, the direction of the light entering the lens will change greatly, the focus will move to the lens, the focal length will be smaller, and the diopter will become larger. In order to keep the diopter unchanged, it is necessary to reduce the curvature of the lens, that is, to reduce the curvature of the mirror surface, so that the thickness of the lens can be reduced. This is why the larger the refractive index, the thinner the lens is. Under the same premise of other things, the larger the refractive index, the thinner the lens, the lighter and more beautiful the lens, and the higher the price, but the larger the refractive index is not the better.
Aluminum Night Driving Glasses
These night vision glasses feature advanced HD technology. The aluminum frame is lightweight, allowing you to comfortably wear your driving glasses and reduce glare for safe driving. Because the lenses are yellow, these glasses act as night vision goggles to reduce glare, reflections, and their negative effects, while improving and brightening the visual area. Polarized lenses have a special anti-reflective coating that eliminates intense reflected light and reduces glare and scattered reflections. They can double as day and night glasses, improving clarity around the clock.