[Polarized Sunglasses] How to choose polarizers to choose polarized Sunglasses

How to choose polarized Sunglasses

The first consideration is the quality of polarized Sunglasses

The primary function of polarizing Sunglasses is to prevent ultraviolet rays and filtrate polarized light. Good polarized Sunglasses lenses can block more than 90%of ultraviolet penetration. Please choose polarized Sunglasses with the best blocking of UV400 to the best obstruction of ultraviolet logo;The inferior polarization Sunglasses of the polarizing filtering function, such as dark Sunglasses, is darker with the light of the human eye and the pupils of human eyes will become larger, and the ultraviolet rays of the eyes will increase, increasing damage to human eyes.

Will there be discomfort in long -term wear polarized Sunglasses?

Genuine polarized Sunglasses have to be comfortable to wear; if you wear bad feelings such as discomfort, dizziness, headache, dry eyes, tingling, etc.Generally, inferior lenses have no technical and functional at all when manufacturing, and the lens materials are also very inferior. Choosing inferior polarizer Sunglasses cannot protect the eyes. On the contrary, it will cause damage to be worthless.

Select polarizing Sunglasses to focus on the protection function of the frame

The protection function of polarizing Sunglasses Apart from the basic functions such as anti -ultraviolet rays, avoiding strong light dazzling, and filtering glare, most polarizing Sunglasses frames are designed with surface arcs. In outdoor sports, it can effectively prevent wind and foreign body stimulation. In additionThe hardness of the lens and the flexibility of the frame of the frame must be considered whether it will hurt the human body.

The selected polarized Sunglasses should be true and natural

The color selection of polarized Sunglasses should be based on the color of the surrounding environment, the edges of the object are clear, and the principle of effectively identifying different color signal Lights.Especially when driving Sunglasses, it is guaranteed to drive safety.The color of the lens is better in gray, tea, and green, because these colors of lenses are better absorbed by infrared and ultraviolet rays, which can improve visual contrast and clarity. Wearing effects in severe air pollution or fog.

The identification of the quality of polarized Sunglasses

Generally, regular glasses shops have instruments to detect Sunglasses resisting ultraviolet capacity. Through instrument detection, you can know whether the glasses in your hands have reached the standard.In addition, the simple method of testing the quality of Sunglasses is: you can use the ultraviolet light sent by a banknote test or a banknote check machine to observe the UV logo pattern on the RMB through Sunglasses. If the quality of the Sunglasses is poor and there is no obstruction of the ultraviolet rays, it can still be clearly clear.When you see the UV logo pattern on the RMB, on the contrary, if the quality is excellent, you can't see it.

How to identify the authenticity of polarized Sunglasses

The polarized lens is made of synthetic resin, which is as light and precise as Contact lenses. After being made, it can be filtered to remove the road reflection under the wet surface or sunlight.Main advantages: light, can filter 99%of the dazzling reflection chaos, 99%of harmful ultraviolet light, not easy to break.In order to filter the dazzling light in the water surface, land or snow, add vertical special coatings to the lens, which is called polarized lens.It is most suitable for outdoor sports (such as driving, maritime activities, skiing or fishing).More and more people chose polarized Sunglasses when choosing Sunglasses.But how to distinguish the polarized Sunglasses you buy has the function of polarizing and UV400.

1. Find a liquid crystal display to face the level of the glasses at the screen. At this time, the lens has not changed. Then when the glasses rotate up the clockwise to 45 , the color of the lens becomes darker, and then rotates and returns to normal.Polarized lenses, if there is no change anyway, it is not polarizing.(Note that it must be a LCD display).

2. The UV400 means 100%blocking ultraviolet rays.

The following method can simply measure the anti -ultraviolet effect of the lens or whether the lens has passed the UV400 identification.The Sunglasses on the market do not necessarily have the effect of isolation of ultraviolet rays. If you want to know if the lens can isolate ultraviolet rays:

Find an ultraviolet banknote test lamp and a one hundred yuan.You can see the RMB 100 of the RMB.If you have a lens with the UV400 function, you cannot see the anti -counterfeiting.

precautions for Polarized Meic mirror

1. Try to use polarized lenses for the lens of driving the lens.Because the biggest trouble of people's eyes when driving is glare and ultraviolet radiation.Only polarized lenses can effectively eliminate glare.As we all know, ultraviolet rays are chronic killers of the eyes, which can cause problems such as cornealitis and macular lesions.

2. Some special feature polarizers will not be obvious when testing polarizers. For example, driving mirrors (polarizing mirrors) lenses at night is relatively lighter, usually light yellow lenses. When testing polarizers, the lens is 45 when it is 45 .Through the lens, you can see that the color of the lens becomes dark yellow, and it will not become black and opaque like a gray lens.

1. How much is a lady's Beach towel?

Beach towel is a towel used when playing beach and beaches. It is often used for playing Outdoor beaches, wiping the body, covering the body after exercise, or laying on the beach. The Beach towel is very practical. Therefore, many friends who plan to go to the beach vacation areWant to buy a Beach towel, especially female friends, and buy a beautiful Beach towel can also become a beautiful landscape line to attract attention. How much is the Beach towel?

The price of the Beach towel is not uniform. It only takes a dozen twenty yuan for cheap, and there are more than 100 yuan. The specific price mainly depends on the brand, material, production process, size and other factors of the Beach towel.You can buy beach towels in large supermarkets or outdoor products stores, or you can buy it online, but many friends do nt know how to choose the Beach towel. Here are the selection strategies for beach towels.

2. How to buy a good Beach towel

The Beach towel can wipe the water on the body. As a rest lying cushion, it can also play a sunscreen. It can be described as a lot of use, but there are many different categories of beach towels. How to choose the Beach towel?

1. Select material

beach towels are made of pure cotton, polyester fiber material, mulberry silk materials, etc. The general Beach towel is made of cotton, which is more comfortable and the price is low.

2. Select color

The color and patterns of the Beach towel are relatively abundant, but there are also choices of solid color beach towels. The solid color Beach towel has only one color, very simple, and it looks very refreshing.The towel is also very eye -catching.

3. Selection size

beach towels are usually relatively large. This is designed to facilitate laying on the beach, but it is not convenient to carry on the Beach towel, it is not easy to wear on the body, and the price will be more expensive. ThereforeSelect the size of the body, so that it can be tied to the Beach towel at any time on the beach, which is more convenient.

One more thing to note is that after all, the Beach towel is directly exposed to the body. If you buy it, it is best to go to the offline physical store to try it to see if it is comfortable to avoid buying difficult products.

1. What is the price of table tennis shoes

With the improvement of technology, the use of side movement and step movement will increase. Wearing ordinary sneakers playing balls can easily damage the knee joint and easily cause ankle sprains.table tennis shoes can not only reduce the impact in the movement, protect the knee joint, increase friction with the ground, and prevent it from slipping at the foot and sprains.It is also helpful for the improvement of technology.A pair of professional table tennis shoes is very important, so what is the price of table tennis shoes?

table tennis shoes can generally be divided into high, medium, low -end, high -end shoes generally prices above 300 to more than 1,000 yuan, while low -grade is more than 200, or even tens of dollars can buy ideal table tennis training. Dedicated shoes.

Note: The above prices are all from the Internet, for reference only.

Second, the big table of table sashimi is small or small

The size of table tennis shoes has a great impact on comfort.If the shoes are too large, the feet will slide in the shoes, causing unstable and uncomfortable.On the contrary, if the shoes are too small, the feet will feel tight and uncomfortable, which will not only affect the performance of the game, but also cause harm to physical health.Suitable shoes can provide good support and protection, helping players to play the best level in the game.

The right table tennis shoes can also provide good stability.If the shoes are too large, the feet are difficult to control the shoes, resulting in instability.If the shoes are too small, the feet will feel tight and uncomfortable, which will also affect stability.Therefore, choosing the right size is very important for maintaining balance.

When choosing table tennis shoes, you must first take your feet.You can use ordinary measurement tools or professional 3D scanners for measurement.Next, according to the length of the feet, you can refer to the size table of table tennis shoes to select the appropriate shoe code.Different brands and styles of table tennis shoes may have different size standards, so it is best to choose shoes that match their own feet.

Third, table tennis shoes purchase skills

1. First of all, the choice of brand is very important.Well -known brands of table tennis shoes usually have better quality guarantee and after -sales service, and their reputation is better.For example, brands such as Red Shuangxi and Pisces have accumulated rich experience in the field of table tennis shoes and can provide professional technical support.

2. Secondly, the choice of material is also critical.table tennis shoes are mainly made of leather and fabrics.The leather material has good breathability, high comfort, and is suitable for occasions with higher summer or temperature. The fabric material is more flexible and lightweight, suitable for environment with low temperature or lower temperature.Choose the right material according to actual needs and wearing habits.

3. In addition, the function of table tennis shoes is also worthy of attention.Anti -slip, support and cushioning are the main functions.The anti -slip function ensures that you do not slide when you move; the support function enhances the foot stability and balance; the cushioning function reduces the impact on the feet when jumping.Choose the right function according to the habit of playing.

4. The choice of size is also important.If the foot type is normal, you can choose the standard size; if the foot type is wide or fat, it is recommended to choose a slightly larger size.It is best to try it on when buying to ensure that the shoes are suitable.Inappropriate sizes will affect the play experience.

5. The choice of insoles and socks cannot be ignored.The insoles can improve comfort and cushioning performance, while socks protect the feet and prevent slipping.Choose materials with good breathability and good cushioning performance to improve the ball experience.

6. Finally, the price is also a factor that needs to be considered.table tennis shoes with different brands, materials and functions are large.Select the right shoes according to actual needs and budget.When the budget is limited, you can choose a high -cost brand and model; when the budget is sufficient, you can consider high -end brands.

In summary, multiple factors need to be comprehensively considered to buy table tennis shoes.Select the right shoes according to your own needs and budget.At the same time, pay attention to the issues such as trying on and after -sales service.

[LED mirror front lights] How to pay attention to when using the LED mirror front lamp in the LED Mirror front light

LED lights are becoming more and more popular, so there are already manufacturers to make the LED mirror front lights with a set of mirrors and bathroom cabinets, so installation is relatively simple after buying.However, there are still many mirrors or bathroom cabinets designed separately. Those who want to install the front Lights of the mirror need to be purchased and installed by themselves.

How to choose the LED Mirror front light

1. The light source tile number should be selected.The LED mirror headlights are generally small on 7W, 10W, and 10W applications are more common.The LED mirror front lights are used for a few watts, depending on the size of the bathroom.The general household lighting is calculated according to 0.7w-1W/Square meter.

2. When choosing, look at the size and style of the mirror.If you want to choose integrated Lights, measure the width size of the mirror, and there are some independent Light bulb styles, and the number of choices should be more.

The shape and style of the front lamp are more diverse, and the style has color and monochrome. It is selected and adjusted according to the overall style of the bathroom.

3. There is also the choice of lampshade. The brightness of LED lights is generally relatively high. The lampshade of different processes can strengthen or weaken the strength of the light.Compared to the mirror surface, the frosted LED mirror front lights are not so dazzling, and the light is softer. This depends on personal choices. If you are afraid of darker, you can choose the mirror.

What should I pay attention to when using the LED Mirror front light

LED mirror front lights are different from the structure and glow of ordinary lamps, so the maintenance of LED energy -saving Lights is different from the maintenance of ordinary Lights.

1. It is generally seen that the LED's service life is relatively long, which is also relatively suitable for the suitable use environment.The instant pulse will destroy the fixed connection of the LED, so do not frequently switch when used as a bathroom front light.

2. ELED light should pay attention to moisture-proof. Generally, the LED energy-saving light is required to store the temperature of -40 C -100 C, and the relative humidity is below 85%.After the packaging bag is opened, the relative humidity is below 60%, so the bathroom should maintain good ventilation and cleaning.

3. Any behavior of squeezing resin may damage the metal wire inside the LED energy -saving lamp, so you cannot use the unknown chemical liquid to clean the LED Mirror front light, which may damage the surface of the lamp body resin and even cause collagen cracks.If it is cleaned thoroughly, soak the LED Mirror front light into the alcohol at room temperature and grasp the time within one minute.

The LED Mirror front light is a new fashion decorative in the bathroom space, but the price is tens to hundreds of, which is very different.LED Mirror front light chips are small and fast at decay. Do not fall into the low -cost trap of the merchant.

[Beach chair folding chair] How to buy a classified beach chair folding chair of beach chair folding chair

Classification of beach chair folding chair

Beach chair is a category in a Leisure chair.Beach chairs can be divided into cloth beach chairs, leisure beach chairs, Outdoor beach chairs, folding beach chairs, with leather, stainless steel, plastic and other materials. It is a comfortable chair for Outdoor leisure and indoor rest.The production of leisure beach chairs is generally hand -woven. Because it is soft to use, it feels comfortable and generous, has good breathability, and is more and more popular with the owner.Outdoor beach chairs are not only a convenient chair Tool for leisure people, but also a beautiful landscape in the city.

How to buy beach chair folding chair

1. The depth of the beach chair

Generally speaking, in a more formal occasion, people's sitting positions are very straight, and more people like to sit in front of the chair to be "shallow".However, if you are at home, you may sit deeply when you relax, and the whole person seems to be caught in a chair.When buying, you can sit and see first. Try the depth of the whole body when you enter the seat. You can know whether it takes into account the needs of public private.

2. The height of the beach chair foot

The height of the beach chair foot is related to the long legs of the user. Except for the high chair of the chair, the seat height of the general chair will not be too exaggerated, but if there are those with short or young children in the family,Also consider it.

3. The height of the beach chair handrail

If you have a habit of putting your hands on your hands, you may wish to choose a chair with a lower armrest or no armrest.If you like to shrink the whole person in the middle of the chair, then the chair with higher handrails and deep seats is probably the best choice.

4. The height of the back of the beach chair

For those who like "sitting in danger", in addition to choosing a stool without a armrest or back, you can also choose a low -handrail and a low -back chair. At this timeIf the back is leaning on the back, you may choose a chair with a higher back of the back. At this time, you can also see if the height of the back is near the neck, and sometimes the chair near the neck is high.The 90 -degree angle is placed on the back, so it is easy to cause cervical damage.

5. The slope of the beach chair

The slope of the back and the soft comfort of the "additional object" should also be considered.

The slope of the back of the chair is based on 90 degrees. Most chairs are slightly greater than 90 degrees. In this way, people's center of gravity can be slightly backward, and the whole person can sit on the chair steadily.The chair with a large casual function has a larger slope, which makes people look like "lying" on the chair.

6. The softness of the beach chair

Whether the softness of the chair cushion and the back of the back is comfortable. If the chair with a cushion or back is not added, just look at the hardness of the material itself. The "additional part" should pay attention to what the internal filling is used.Essence

7. The stability of the beach chair

Looking at the details of the chair structure, you can know the stability of the chair. The inspection of the joints such as tenon, screws, etc. are very important.It is recommended that when buying, the user should try to sit and see it, and shake the body slightly to experience the stability of the chair.

For the purchase skills of leisure beach chairs, the above are more practical and convenient.Nowadays, the structure of the beach chair and the selection of materials such as materials are similar, and the brand must be guaranteed.The more well -known Outdoor leisure chairs of Zhongtian and Xiyu Lang Saisali. In fact, the purchase of beach chairs does not need to work too hard, just pay more attention to details.