Why are sunglasses more expensive than regular glasses?

In the sweltering summer heat, sunglasses are one of the easiest items to spot, with the exception of short skirts and hot pants, which are worn by almost everyone, which can improve the visual occlusion caused by strong sunlight.

1.Prevent retinal damage: There are many ultraviolet rays in the sun's rays, too much of which can damage the cornea and retina, but wearing sunglasses can protect against ultraviolet rays well, thus preventing damage to the retina.

2.Dust protection: Wearing sunglasses not only blocks out UV rays, but also better prevents dust particles from entering people's eyes in windy weather, and to a large extent, protects the eyes.

3.Protection from direct glare light: When the eye receives too much light, it causes the iris to shrink.

If it is too small, it can cause serious damage and affect the eyes. At this time, wearing sunglasses can well reduce the adjustment burden of the ciliary muscles of the eyes under strong light, so that the eyes can better see objects in natural light, making the eyes more Jennifer.

4.Clear light: As we all know, the frequency of light that people's eyes can recognize is limited, and there are many frequencies of light that the human eye cannot fully distinguish, which will lead to visual problems, so wearing sunglasses can be a good way to avoid this problem.

5.Prevent glare: I'm sure everyone is familiar with the reflection of water light. At this point, opting for sunglasses can better avoid some of the damage caused by glare.

6.Sunscreen: This is mainly for summer, it protects the fragile ** around the eyes.

From this, we can know that wearing sunglasses has many benefits, it can protect your eyes well and better match your clothes. However, despite the many benefits of wearing sunglasses, if you want to achieve better results, you must find a trustworthy sunglasses brand and choose one that is more market-conscious in order to better protect your eyes. While UV rays can be blocked by sunglasses, they are usually absorbed and then spread out, with the pupils flickering.

If you wear it all day, it can also cause serious damage to your eyes.

Ordinary glasses have a low production cost, and there is no need to use black lenses when making them, only ordinary lenses can be used, so you can save a certain cost, but the difference between sunglasses and it needs to have certain standards to block strong light.

Because sunglasses have a special design, it can block strong light and reflect light, so it is higher than ordinary glasses.

Sunglasses and ordinary glasses are generally to achieve the effect of anti-ultraviolet rays and radiation and other uses, which may be high in the production and material of sunglasses, and there is also the poor in the brand.

1. The effect is different: first of all, the requirement of sunglasses is to be able to achieve the effect of anti-ultraviolet rays, and the wavelength of ultraviolet rays is to 380, so the most basic requirement of sunglasses is to UV380 or more. Generally, it is UV400, and poor sunglasses cannot achieve such an effect, so the damage to the eyes is greater than that of not wearing it.

Because when people have dark vision, that is, when they wear sunglasses, their pupils are dilated, if you don't have the function of UV400, then ultraviolet rays will enter the eyes more, causing the chance of cataract occurrence to increase exponentially.

2. Different grades: high-end sunglasses belong to designer brands, and their shape, collocation, and fashion are the most cutting-edge and trendy, and can improve your grade.

3. Different materials: the material of high-end sunglasses again, the frame is mostly used for titanium alloy or pure titanium, Z titanium, ex titanium, etc., some of this material is used in the medical field, such as the stent for heart surgery, which is completely pollution-free, and the specific gravity is lighter than inferior sunglasses, and the electroplating process of titanium alloy is very good, and it will not fall off the paint and deform.

Glasses are an item that people often wear on a daily basis.

The functions of the glasses include several aspects to prepare for the next few aspects:

1. Correct vision.

2. Block strong light.

3. Beautiful. <>

These different functions give glasses different properties and states. Both in appearance and performance, glasses with different functions have different closed states.

In addition, according to the difference in value and **, glasses are also divided into two categories: **glasses and cheap glasses. There is a big difference between these two types of glasses.

Specifically, there are the following differences between the imitation of glasses and cheap glasses:

1. The material is different.

There are many different materials for glasses.

For example, there are various types of spectacle frames, such as metal and plastic.

Another example is spectacle lenses, which are made of glass and resin.

In addition, even if it is the same type of material, the value of the material is different, and it is reflected in the glasses in different states.

2. The brand value is different.

The strength of eyewear manufacturers is different.

Powerful glasses manufacturers have high brand value and high-end product positioning, and the best glasses will be higher.

The brand value of glasses manufacturers with relatively poor strength is relatively low, and the glasses they produce pay more attention to cost performance, which is relatively low.

3. The promotion efforts are different.

Glasses manufacturers who pay attention to brand image pay more attention to the promotion efforts, and the corresponding promotion costs will be higher, and the final glasses they produce will be higher.

Some manufacturers do not have much brand promotion, and the cost of this aspect is relatively low, and the glasses they produce will be lower.

4. The appearance design is different.

**The appearance design of the glasses is carefully designed by a strong professional team, which makes the appearance more beautiful and more comfortable to wear.

Cheap glasses are mostly molded and have a lower cost, but they are inferior in terms of appearance and wearing comfort.

5. The materials are different.

**Glasses are made of higher-end materials with better optical properties.

Cheap glasses are relatively inexpensive, and the optical performance will be relatively poor.

The above is the difference between ** glasses and cheap glasses.

With the prevalence of TV, computers, and mobile phones, most people are addicted to the Internet, but the consequence of being addicted to the Internet is to cause myopia, and now there are many eyes on the market, good glasses can correct vision, and glasses are also divided into many kinds, including ** glasses and low-cost glasses, so what is the difference between them, Today Sakura, we will briefly talk about it.

First of all, the material of glasses is different from cheap glasses, most of the glasses are optical resin sunglasses, most of these lenses are effective materials, through the lens of good permeability, the image image is relatively uniform, and the color reproduction is strong. There is no distortion, and the material is lightweight and the optical performance is very good.

The low-cost glasses are ordinary plastic lenses, his materials are relatively poor, the surface of the lens is not very tidy, the finish is not enough, the imaging will produce a blurry phenomenon, and the packaging is not standardized, there is no qualified mark. Some lenses are inaccurate in diopter and some have a lower finish, which can be fragile and hurt the eyes.

The frames they use are also different, the frames of the glasses are made of titanium alloy composite materials and organic resins, which have the advantage of good corrosion resistance, not easy to deform, not easy to fade, light material, and high elasticity. The frame of low-cost glasses is made of ordinary plastic, which does not have good softness and elasticity, and is easy to break after bending, and the stability is not high.

Finally, I hope that you usually use some glasses, which is conducive to the recovery of vision and can restore your eyes.

**The reason for **glasses** also covers a large part of the brand value of the manuscript family. Like other brands, promotion expenses are one of the most expensive operating expenses for eyewear brands at the moment.

A brand is widely recognized, it needs to invest a lot of advertising costs, and it can be achieved by slowly accumulating, and this part of the investment will be transformed into a part of the first. At the same time, large eyewear brands have a comprehensive quality inspection system, which is very professional in terms of appearance color, surface quality, strength and safety. In addition, the brand eyewear cooperates with high-quality factories to ensure that the quality of eyewear products can be stabilized.

**Glasses pay more attention to the sense of design, have high-quality designers in design, and ensure the popular appearance and structural safety of the product by continuously optimizing the appearance and structure. The hard work and creativity of the designer not only beautifies the decoration of the glasses, but also improves the comfort and convenience of wearing, especially the excellent foreign glasses brands have invested very much in this area.

The difference in material determines the texture, comfort and durability of glasses, and it is not easy for outsiders to see that cutting corners in this regard. The level of glasses products is also intuitively reflected in the material: for example, diamond trimmed spike round glasses and titanium alloy glasses will be a little more expensive, and the general plate is slightly cheaper, and some big brands have platinum frames** Naturally, there is no need to say more.

Cheap glasses are not so particular about the material, and the main thing is to control the material in order to reduce the cost.

My friend and I used to run an optical store, so we look at this issue from a personal perspective. First of all, buying a pair of glasses is scored in four parts: frames and glasses and optometry and liquid digging lenses.

There are many types of frames, and the common ones with more sales are TR90, plates, plastic steel, alloys, titanium alloys, pure titanium, etc. There are many kinds of materials, but they all look similar in front of customers, anyway, a pair of mirror frames, the mold is almost the same, and it is much worse. Different materials of frames because of different materials, properties and characteristics, the ex-factory price will be different, and then through the dealer to the retailer, the retailer will consider four aspects to determine the final sale**

1.Restocking** 2Frame brand 3

Frame style 4Frame features". As a customer, I generally look at the ** first, then look at the style and color, and then look at the effect on the face, while looking at the material will ask if the material is good for fear of being pitted, ** where is the gap between glasses and cheap glasses.

For regular optical stores, no matter how glasses are used, optometry and optometry services must be done wholeheartedly. Both buyers and sellers will believe in one sentence: you get what you pay for.

Except for a few small businesses**mess)**glasses frames are expensive:

One. Brand. Only the brand's things are on the top, and the natural quality of the same brand's things must keep up, otherwise you will smash your own brand.

Two. The style design is more unique Of course, it also depends on the customer's preference, and the expensive glasses sold in the general store are carefully selected by the owner himself. If you can sell the best, the style design will definitely be more individual.

Three. Material. This convenience is not an adequate condition. Because there are many materials for glasses, it is not possible to completely say which material is the best, because each has its own characteristics and determination, it can only be said that the raw materials of expensive glasses materials will be relatively better in terms of nuclear grade.

Glasses ** is mainly determined by technology, a 300 state beam glasses lenses and frames are only worth dozens of which are wanton technology, because the optometry and focus are tested is the wisdom of hail, so it was said that the future society is a talent-shaped society, which is the reason.

Protect your eyes better.

Tall and have a decent status.

The biggest difference between cheap and expensive sunglasses is the different lens material. Cheap sunglasses lenses are ordinary plastic lenses, and the clarity and shape are very poor, while expensive sunglasses use crystal lenses, which are very clear and shaped.

The outer packaging of regular anti-ultraviolet sunglasses must be marked with UV protection level (UV) according to national standards, and there are three types: UVA (filter wavelength in 320-420 nm), UVB (filter wavelength in Chunling 275-320 nm) and UV400 (filter wavelength below 400 nm).

All three have UV protection. Usually sunglasses have a UV index between 96 and 98, and in general, a UV index of 100 is unlikely.

The sunglasses are the same size as the frames and are designed and manufactured to standard specifications. The parameters of the size of the sunglasses are indicated on the temples, bridge of the nose or on the plaque for reference. For example:

53-16-130, which means the frame size is 53mm, the nose bridge size is 16mm, and the temple size is 130mm.

The principle of sunglasses

Sunglasses block uncomfortable glare while protecting the eyes from UV rays. All of this is possible thanks to metal powder filters, which "select" light when it hits it. Tinted glasses selectively absorb some of the wavelengths that make up the sun's rays because they use very fine metal powders (iron, copper, nickel, etc.).

In fact, when light hits the lens, it is reduced due to the so-called "destructive interference" process. That is, when certain wavelengths of light (in this case, ultraviolet A, ultraviolet B, and sometimes infrared) pass through the lens, they cancel each other out on the inside of the lens, i.e., in the direction of the eye.