How to choose sunglasses guide

How to choose sunglasses, sunscreen clothing and sunglasses have gradually become one of the essential items in summer travel. Sunglasses can resist the ultraviolet rays brought by the sun and reduce the damage to the eyes, which is very fashionable. The following is a guide on how to choose sunglasses.

Sunglasses Selection Guide 1 Sunglasses Lens Materials

The same sunglasses may have different values because they are different. The general principle of sunglasses is that businesses can protect their eyes through specific dimming technology. Good quality sunglasses can even reduce direct light and eliminate ultraviolet rays. In addition to technology, there is a big decisive factor that distinguishes it from other sunglasses: different lens materials!

The lens materials of sunglasses mainly include PC, nylon, resin, polarizer, AC and glass. Let's take a look at their specific definitions!

1, PC mirror material: PC, which is polycarbonate lens, also has a special name in the market-space lens. Its disadvantage is poor thermal stability, and 100 will soften automatically. Its advantages are refractive index of 1 and 59 1, ultra-light texture, strong impact resistance and 100% ultraviolet protection.

2. Nylon material: Nylon lens is made of ultra-micro ultraviolet-resistant transparent crystal material, also known as memory nylon. The crystal of this material is petite, does not scatter visible light, and has excellent hard crack resistance, chemical resistance, elasticity and impact resistance. It belongs to high-grade lenses, and many big-name glasses will use this material. If you want to wear it for a long time, you may wish to choose this material.

3. Resin material: Resin lens is a kind of lens material chemically synthesized with resin as raw material. Its material is polymer chain structure, which is connected with each other and presents a three-dimensional network structure. The structure between molecules is relatively relaxed, and the resulting relative displacement space allows light to pass through 84% to 90%, which can effectively block ultraviolet rays. It is a good lens material with very high cost performance.

4.AC material: AC lens is also called acrylic lens, and the main material is polymethyl methacrylate, which is also commonly known as plexiglass. Strong toughness, light weight and good fog resistance are common glasses lenses.

5. Glass material: the glass lens is made of optical glass, which has the characteristics of high transmittance, high refractive index and stability. Moreover, the clarity of this kind of lens is slightly higher than that of resin lens, but it is also easy to break and has a heavy texture.

Lens types of sunglasses

Sunglasses, as a kind of protective glasses to a certain extent, are almost the same in material as ordinary glasses, but the original material of lenses alone is not enough to achieve the desired effect, so workers can achieve the finished product effect by processing lenses. There are five kinds of sunglasses lenses: colored lenses, anti-reflective protective lenses, color-changing lenses, painted lenses and polarized lenses.

1, color lens: This kind of lens is also called "dyed lens". In the process of making lenses, some chemicals are added to achieve the effect of making lenses appear in other colors and absorbing light with specific wavelengths. It is a common kind of lens.

2. Anti-reflective protective lens: This kind of lens is completely made, and a special coating is added to achieve the effect of reflecting strong light. Most of this coating is mainly magnesium fluoride, which can effectively block strong light without affecting visual clarity!

3. Colored lens: The manufacturing principle of this kind of lens is similar to that of light-resistant protective lens, and a special material coating is added to the lens to achieve a certain protective effect. The fundamental difference is that colored lenses have many colors and patterns, which are more popular with young people! Recently, the most popular color-coated lenses are gradient lenses. Through special addition technology, on the basis of protection, the colors show a gradient effect from deep to light, which brings people a different sense of fashion!

4. Color-changing lens: Color-changing lens is also called "photosensitive lens". It adds chemical substances such as silver halide to the original lens, which can automatically turn the lens into colored lens under strong light irradiation and play a protective role. This kind of lens is now a combination of myopia lens and sunglasses, which is particularly convenient for people with myopia.

5. Polarizing lens: Polarizing lens is to add a vertical special coating material to the lens, so that the lens can spontaneously filter the dazzling light refracted in sunlight and other directions, such as water and ground, thus protecting the eyes.

The style of sunglasses

Sunglasses have developed from a single form to a variety of diversification, in which countless fashion elements have been added, which brings people the benefits of fashion and increases the difficulty of selection. If you want to choose a sunglasses that suits you, the style of sunglasses can never be ignored. Sunglasses that suit you can modify facial lines to achieve the effect of fostering strengths and avoiding weaknesses. Let's take a look at the specific styles of sunglasses.

1, aviator sunglasses: This kind of sunglasses has been popular for a long time and is also the most basic style. Basically, all faces can be easily controlled, even square faces and round faces. This style can play the role of fostering strengths and avoiding weaknesses, so it is also the most popular among the public.

2. Round sunglasses: The most far-reaching influence of round sunglasses is the small fortune-telling glasses. This original type of glasses appeared in major costume film and television dramas. Although the lens at that time had little resistance to light, it was full of a sexy feeling from the inside out. On the basis of the increase of modern technical conditions, this style of glasses has different sizes, but it is still the original retro atmosphere!

3, polygonal sunglasses: This style of sunglasses has obvious angular lines on the frame, with angular lines. The most common ones are rectangular sunglasses and hexagonal sunglasses. This style of sunglasses can visually lengthen facial lines, improve the proportion of facial lines, and block the rounded face. More suitable for friends with round faces.

4. Cat's eye sunglasses: This style of sunglasses, also called triangle sunglasses, comes with this special gas field. Its main feature is that there is a prominent sharp corner design at the joint between the mirror frame and the temple, which is one of the most popular styles in recent times, giving people a feeling of high trend and overall coldness.

5. Irregular sunglasses: This style of sunglasses is diverse. Because of the addition of fashion factors, there is no specific name, and most of them are synonymous with decoration and personality. In recent years, the most common decorative sunglasses are lines, and various line border elements are added around the frame to decorate the face, which also gives people a different sense of fashion and handsomeness.

How to choose sunglasses? 2. Choice of sunglasses materials

Selection of lens materials: according to age, occupation, frequent activities and preferences.

Glass lens: high hardness, not easy to scratch, but easy to break.

Because of the nature of work or other reasons, it is easy to get dust on glasses and scratch them. It is best to choose glass lenses.

Resin lens: light weight, not easy to break, but low hardness, easy to scratch.

Because most children are naughty and playful, they often get eye injuries because their lenses are broken. Therefore, it is best for children to choose resin tablets. Also, color-changing lenses are also a good choice.

Second, the choice of sunglasses frame

Choose a frame shape: choose a frame that suits you according to your face.

The first type: round face

Not suitable for round sunglasses will make your face more bloated, and the shape of sunglasses should be as obvious as possible. Try to choose glasses with thick frames. If you choose sunglasses with slender and soft frames, your face will be more prominent, and at the same time, you should choose dark lenses, which will have the visual effect of "tightening" your face.

The second type: oval face

If you have an oval face, which is what we often call a standard face, congratulations on wearing any sunglasses you like. There is almost nothing to be picky about the face, you can HOLD any style of glasses! Even the round sunglasses that other faces can't avoid wearing on the standard face will murder the eyeball, and the choice of lenses will make the facial contour more layered.

The third type: square face

There are many Asians in this face, and the square face should wear round sunglasses with soft curves, and the frame should be thick and wide to express refreshment. Narrow and delicate sunglasses with a square face will look particularly small and out of proportion. Pilot sunglasses with slender frames are a good choice, which does not account for the proportion of the front face. Dark glasses with narrow mirrors will also widen the face visually. In addition, the style of upturned eyes at both ends of the mirror ring is not suitable for people with square faces.

The fourth kind: heart-shaped face.

Lightweight, polygonal sunglasses should be worn, and the width of the frame should not exceed the temples and match the contour of the face. The color of the lens should be lighter to reduce the weight above the face, and at the same time, avoid glasses with upturned sides, because this will emphasize the sharp chin.

The fifth type: diamond-shaped face

The forehead is narrow and the chin is pointed, but the cheekbones are obvious. Larger sunglasses will modify the prominent cheekbones, and the temples will be wider, just blocking the thin and narrow temples, which can modify the face and even give people the illusion of an oval face. Dark or saturated sunglasses are better, and light puffiness will make cheekbones more prominent.

Sixth: pear-shaped face

Face, face and forehead are narrow, but cheeks are wide. People with this face will have a heavier chin, so balancing facial lines is the first priority. People with pear-shaped faces are more suitable for choosing a playful style with both ends of the mirror beam upturned.