The biggest difference between domestic lenses and imported lenses is the transparency and brightness of the lenses.

The existing imported lens brands in China are mainly big brands such as Essilor in France, Zeiss Heuer in Japan and Nikon. These brands of lenses are commonly used by us.

There are many domestic brands seen in optical shops, mainly Wanxin, Yue Ming and Wei Xing.

Characteristics of lens protrusion

Precise grinding, exquisite optical curved surface design, outstanding light transmittance and anti-reflection performance, excellent visual imaging quality, soft film color and extremely high visual comfort, because the physicist ErnstKarlAbbe, inventor of lens Abbe number, is one of the founders of Zeiss.

Therefore, Zeiss lens has always paid special attention to the control of Abbe number. At the same refractive index, the dispersion of Zeiss lens is much lower than that of other brands, and the wearing comfort is greatly improved.

The film has high hardness, good wear resistance, not easy to scratch, and good waterproof and anti-oil pollution effects.

Children can choose good students, depending on the perfect lens series, which can relatively effectively control the growth of myopia in the development process. Young people can choose the diamond crystal love series, which can effectively alleviate the eye discomfort caused by watching the screen of electronic products for a long time.

Middle-aged people can choose anti-fatigue series, and long-term close-up use of eyes will cause symptoms such as visual fatigue. People who are over middle age can choose progressive series. People who are over middle age are prone to presbyopia and can't see clearly.

Advantages: Imported lenses have better quality, while domestic lenses have better cost performance.

Difference: The main difference between imported lenses and domestic lenses lies in the different materials and technological methods of lenses. Each brand has different material layers and different characteristics.

Tips for preventing myopia

1. Gaze into the distance: When we play mobile phone for too long, we can relax and look at the distance more, which can move the lens, play a positive role and relieve eye fatigue.

2. Look at more green plants: Because green can relax and has no irritation to the eyes, if the eyes are uncomfortable, look at green plants after a while.

3. Don't play with your mobile phone in the dark: it will do great harm to your eyesight, so avoid playing with your mobile phone in the dark.

Method for protect eyes

1. Eat more foods that are good for your eyes in your daily diet, which can ensure a balanced nutrition without affecting your health.

2. Do some eye movements frequently at ordinary times, which can relax nerves and relieve stress.

If you want to see a doctor in time when your eyes are uncomfortable, treat them as soon as possible.

When you use your eyes for a period of time, you'd better relax, especially if you read or stare at the electronic screen for a long time, your eyes will feel tired, and you can reduce the burden on your eyes by relaxing.

The above contents refer to Sanding Health Network.

How to distinguish between domestic glasses and imported glasses?

The difference between domestic lenses and imported lenses lies in the differences in materials and processing methods. Each brand has different material layers and different characteristics. Comparatively speaking, the quality of imported lenses is better!

Is there a difference between imported lenses and domestic lenses?

Of course, there is a difference between imported lenses and domestic lenses. The main difference lies in the different materials and processing methods of lenses. When shopping, many people like to struggle whether it is better to buy domestic goods or imported goods. In fact, after years of development, many things in China will not be worse than those imported, so sometimes find a domestic brand and you may find that domestic products have already surpassed imports. Just like domestic lenses.

Speaking of domestic lenses and lens lenses, many people may not know such an important message. In fact, more than 98% of the glasses in the world are made in this super processing factory in China. Maybe the glasses you are using now are actually made in China, although they are labeled as imported. Therefore, don't think that only foreign countries can make high-quality glasses. This is a completely wrong cognition.

Of course, it can't be said that domestic lenses are completely good. After all, there is not only one manufacturer that makes lenses. The materials used by different manufacturers are similar, and the actual manufacturing process cannot be generalized. Therefore, there is no uniform and fixed answer to the quality of products. The quality of lenses produced by some manufacturers is very good, and the wear resistance and transmittance are not much different from those of some imported brands. There are brand lenses such as Essilor and Zeiss abroad, and there are also high-quality brands such as Wanxin and Yue Ming in China.

In fact, as long as the quality of brand lenses produced by big factories is very reliable, as long as you buy regular products, they are not necessarily worse than imported ones. You know, many imported products on the market are mostly counterfeit. The different manufacturing materials and process methods of domestic lenses and imported lenses also lead to different brand bargaining. Although the quality of domestic brand lenses is similar to that of imported lenses, the price of domestic lenses is much cheaper than that of imported lenses. In terms of cost performance, domestic lenses are actually more worth choosing.

The difference between imported vr glasses and domestic VR

General VR products are divided into three categories: external headsets, VR all-in-one machines and mobile terminal display devices.

External headphones have a good experience and the screen is independent. But the price is more expensive, such as HTCvive and Samsung gearvr.

VR all-in-one machine can enjoy the visual impact brought by 3D stereoscopic effect in the virtual world without any input and output devices.

Mobile phone VR is commonly used in China, that is, mobile terminal display equipment. You can experience 3D effects by wearing a mobile phone, and there are many low-end brands, such as Storm, Fantasy, Small House and so on.

What's the difference between imported glasses and domestic glasses?

The main difference lies in the choice of lens materials and process methods.

The material film of each brand is different and its characteristics are different. Let's take a foreign brand-German Zeiss as an example. The film of Zeiss in Germany is a lotus film, which embodies the characteristics that the lens is not easy to get wet and has strong anti-pollution ability, flower resistance and strong anti-reflection ability.

Coupled with the high photometric accuracy of Zeiss, Zeiss lens can be called the world's top lens. But now the quality of many industries in China has kept up.

Domestic optical technical indicators are also fully qualified, and many well-known imported brands are actually made in China. The domestic quality is really changing with each passing day, and it is more and more trustworthy.

For example, the domestic brand ApolloLens, relying on the advanced R&D and manufacturing strength of its parent company, has established a complete basic product system of refractive index point films and customized films from 1.49 to 1.90 in the garage, and has also developed smart mirrors, new pupils, Sport-ech, Star Blue, Super Beauty and so on for people with high-quality visual needs.

The optical performance, protective performance, wear resistance and thinness of the lens have been further optimized. Rich product line and excellent product quality make it stand among the powerful lens brands in China.

Excellent R&D capability and best-selling products make Apollo lens one of the few domestic lenses that can compete with Essilor and Zeiss, and also ensure the quality of customers. And Apollo is more cost-effective than imported lenses, so you can learn more about it.