How to choose sunglasses guide

Guide on how to choose sunglasses

Guide on how to choose sunglasses, sun protection clothing and sunglasses during summer travel have gradually become one of the indispensable items. Sunglasses can block ultraviolet rays brought by the sun, reduce damage to the eyes, and are very fashionable. Here is a guide on how to choose sunglasses. How to choose sunglasses guide 1

Lens material of sunglasses

The value of the same sunglasses may also be very different because of the different materials. The general principle of sunglasses is that merchants use specific light-adjusting technology to achieve eye protection. Good-quality sunglasses can even reduce direct light and eliminate ultraviolet rays. Apart from the technology, they are different from other sunglasses. The biggest decisive factor is the difference in lens material!

The main lens materials of sunglasses are divided into: PC lens, nylon lens, resin lens, polarizer lens, AC lens and glass lens. Let’s take a look at their specific definitions!

1. PC mirror material: PC is carbonated polyester lens. It also has a special name in the market - space lens. Its disadvantage is that its thermal stability is not good. Well, it will automatically become soft at 100°. The advantage is that the refractive index is 1.591, ultra-light texture, strong impact resistance, and 100% UV protection. Therefore, it is the designated lens material for sports glasses, and it is suitable for those who like outdoor sports. When people buy goggles or sunglasses, it is recommended to choose this lens material.

2. Nylon material: Nylon lenses are made of ultra-fine UV-resistant transparent crystal material, also commonly known as memory nylon. The crystals of this material are petite and do not scatter visible light. It has excellent hard cracking and chemical resistance, as well as strong elasticity and impact resistance. It is a high-end lens. Many big-name glasses use this material. If you want to wear it for a long time, you might as well choose this material.

3. Resin material: Resin lens is a kind of lens material that is chemically synthesized using resin as raw material. The interior of the material is a polymer chain structure, which is connected to each other. A three-dimensional network structure. The structure between molecules is relatively relaxed. The relative displacement space generated allows the light transmission rate to be 84% to 90%. It can effectively block ultraviolet rays and is a good lens material. , and the price/performance ratio is very high, very suitable for student parties.

4. AC material: AC lenses are also called acrylic lenses. The main material is polymethylmethacrylate, commonly known as plexiglass. It has strong toughness and is light in texture. It also has good anti-fog properties and is a more common type of spectacle lens.

5. Glass material: Glass lenses are made of optical glass as raw material, which exhibits high permeability, high refractive index, stability and other characteristics, and the clarity of this lens is higher than that of resin. The lens is slightly taller, but it also has the disadvantages of being easily broken and having a heavy texture.

Lens types of sunglasses

As a type of protective glasses to a certain extent, sunglasses are roughly the same as ordinary glasses in terms of material, but if you want to achieve the desired effect only by using the original material of the lens, The desired effect is far from enough, so workers process the lenses to achieve the effect shown in the finished product. There are five types of sunglasses lenses: colored lenses, anti-reflective protective lenses, photochromic lenses, tinted lenses, and polarized lenses.

1. Colored lenses: This kind of lens is also called "dyed lens". Some chemicals are added during the process of making the lens to make the lens show other colors and absorb specific The effect of wavelength light is a more common type of lens.

2. Anti-reflective protective lenses: This type of lens is made with a special coating added to it to achieve the effect of reflecting strong light. This coating is mostly made of fluorine. Mainly made of magnesium, it allows the lens to effectively block strong light without affecting visual clarity!

3. Colored lenses: The manufacturing principle of this type of lenses is similar to that of anti-light protective lenses. They both add a special substance coating to the lenses to achieve a certain protective effect. The fundamental difference is that Tinted lenses come in a wide variety of colors and patterns, making them more popular among young people! The most popular one these days is the gradient colored lenses, which use special adding technology to give the color a gradient effect from dark to light on the basis of protection, giving people a different sense of fashion!

4. Color-changing lenses: Color-changing lenses are also "photosensitive lenses". Chemical substances such as silver halide are added to the original lenses, which can automatically turn the lenses into colored lenses when exposed to strong light. , play a protective role. These lenses are now mostly a combination of myopia lenses and sunglasses, which are particularly convenient for people with myopia.

5. Polarized lenses: Polarized lenses add a vertical special coating material to the lenses, so that the lenses can spontaneously filter the dazzling light refracted from the same direction as the sun, such as the water surface, the ground, etc., so as to To achieve eye protection.

Styles of sunglasses

Sunglasses have evolved from a single form to a variety of styles now, with countless fashion elements added to them. While bringing fashion benefits to people, it also increases the difficulty of selection. If you want to choose a pair of sunglasses that suits you, the style and type of sunglasses must not be ignored. Sunglasses that suit you can modify your facial lines to maximize your strengths and avoid weaknesses. Effect, let’s take a look at the specific styles of sunglasses!

1. Aviator sunglasses: This kind of sunglasses is a style that has become popular very early and is also the most basic style. It can be easily controlled by basically all face shapes, even square faces and round faces. Face, this style can have the effect of maximizing strengths and avoiding weaknesses, so it is also the most popular among the public.

2. Round sunglasses: The most profound influence of round sunglasses is on fortune-telling glasses. This original type of glasses appeared in major costume movies and TV dramas, although the lenses at that time had little resistance to light. Big, but it has a sense of personality from the inside out. In modern times, based on the increase in technical conditions, this style of glasses comes in different sizes, but the innate retro flavor remains unchanged!

3. Polygonal sunglasses: This style of sunglasses has obvious angular lines on the frame. The most common ones are rectangular sunglasses and hexagonal sunglasses. This style of sunglasses can visually It lengthens facial lines, improves facial line proportions, and blocks the roundness of the face. It is more suitable for friends with round faces.

4. Cat-eye sunglasses: This style of sunglasses is also commonly known as triangular sunglasses. It has a special aura. The main feature is that the frame and The place where the temples are connected has a prominent sharp angle design, which is one of the most popular styles in recent times. The overall design gives people a trendy and cool feeling.

5. Irregular sunglasses: This style of sunglasses has become more diverse. Due to the addition of trend factors, there is no specific name, and most of them are synonymous with decoration and personality. In recent years, The most common ones are sunglasses with line decoration. Various line border elements are added around the frame to modify the face shape and give people a unique sense of fashion and handsomeness. Guide on how to choose sunglasses 2

1. Selection of sunglass materials

Choosing lens materials: You should choose based on your age, occupation, regular activities, and preferences.

Glass lenses: High hardness, not prone to scratches, but easily broken.

If the spectacle lenses are easily stained with dust and scratched due to the nature of work or other reasons, it is best to choose glass lenses.

Resin lenses: light in weight and not easily broken, but low in hardness and prone to scratches.

Because most children are naughty and playful, eye injuries from broken lenses often occur. Therefore, it is best for children to choose resin lenses. Also, photochromic lenses are also a good choice.

2. Selection of sunglass frames

Choose the shape of the frame: You should choose the frame that suits you according to your face shape

One type: Round face

It is not suitable to wear round sunglasses. A round shape will make the face more bloated. The shape of the sunglasses should also be as square as possible. Try to choose glasses with thick frames. If you choose glasses with slim and soft frame lines, Sunglasses will make your face look bigger, and you should also choose dark lenses that have the visual effect of "tightening" your face

Second type: Oval face

If you have an oval face, It is what we often call a standard face, so congratulations, you can wear any kind of sunglasses you like. There is almost no fault in the face shape and you can hold any style of glasses! Even round sunglasses, which are avoided by other face shapes, will kill the eyeballs when worn on a standard face. The choice of lenses will make the facial contour more layered.

The third type: square face

This face shape is more common in Asians. Square faces should wear round sunglasses with soft curves at the corners. The frames should be thick and wide to show crispness. , Narrow and delicate sunglasses will look particularly small and disproportionate when matched with a square face. Pilot sunglasses with slender frames are a good choice, as they do not take up much of the proportion of the face. Sunglasses with too narrow mirror width will also The face looks wider visually. In addition, the style with upturned ends of the mirror rim is not suitable for people with square faces.

Type 4: Heart-shaped face

It is advisable to wear lightweight and polygonal sunglasses. The width of the frame should not exceed the temples and should be in line with the face. The silhouettes should match each other, and the lenses should be of lighter color to reduce the weight on the upper part of the face. You should avoid wearing frames with upturned sides, as this will emphasize the sharp lower jaw

The fifth type : Diamond-shaped face

Narrow forehead, pointed chin but more obvious cheekbones. Larger sunglasses will modify the protruding cheekbones, and the temples should be wider, so that they can block the thin and narrow temples. , can modify the face shape and even give people the illusion of an oval face. Dark or highly saturated sunglasses are better, while light-colored sunglasses will make the cheekbones more prominent.

Type 6: Pear-shaped face

A face with a narrow forehead but wider cheeks. People with this face shape will have a heavier chin, so balancing the facial lines is the first step. First of all, choose a playful style with upturned ends of the mirror bridge, which is more suitable for people with pear-shaped faces