The sound characteristics of headphones are as follows:headphones with memory card
1. The sound b
Se næste indlæg >
How to buy sports glasses
chuangjianxinboke
As the types of outdoor sports are rich and diverse, including extreme cycling, outdoor mountaineering, jogging, skiing, golf, camping and other sports, the functional requirements of sports glasses are also different for different sports.
For those engaged in intense extreme sports, sports safety protective glasses should be equipped, which are safe (PC lenses), protection (TR-90 frame), comfortable (non-slip nose pads and foot covers), and beautiful (match sports and leisure clothing) ). The windshield is suitable for long-term sports in the outside world, especially for sports enthusiasts in areas with strong wind and sand. In order to meet the needs of myopia sports enthusiasts, the birth of myopia sports glasses has brought them a gospel. sunglasses custom The function of myopia sports glasses not only includes the performance of general myopia glasses, but also uses PC material to resist the impact surface, so that myopic friends can also enjoy the fun of sports. There are long-term exposure to the sun, strong and long-term sun exposure, you need to buy polarized sports glasses.
For mountain climbers, the snow on the mountains can easily damage the eyes. In terms of ultraviolet rays, the reflected light of snow at a height of 10,000 feet is more than 50% higher than that of the sea. The retina of the naked eye is easily damaged, which causes great pain and is called snow blindness. Sunglasses can reduce this. Harm, but don’t be fooled by cloudy weather, because ultraviolet rays will penetrate the clouds, dazzling light will cause headaches, and sports glasses will have a 95-100 filtering effect.
Sports glasses for glacier travel must have a penetration rate of 5-10, while multi-purpose sports glasses must have a penetration rate of 20. Look in the mirror when you buy. If you can easily see your eyes, they are too bright. The color of the lens is gray or green. It is better to choose yellow lenses. For infrared rays, unless you are directly facing the sun, you will be directly damaged. However, general sports glasses can prevent infrared rays from penetrating and protect your eyes. Sports glasses must have side protection devices to reduce the sun penetrating the eyes, but You must have good ventilation equipment to prevent lens fogging, or use anti-fog lenses or anti-fog cleaners. You need to bring a spare pair of sports glasses to avoid loss. You can also use cardboard or clothes to cut thin strips to cover your eyes.
Most rock climbers prefer to use contact lenses, because the glasses will slide on the bridge of the nose, which can improve visual acuity and will not appear water spots, but there are still shortcomings. For example, too much sun, wind, sand, and dirt can cause eye inflammation, and at the same time It is not easy to clean and maintain in the suburbs.
like：
Ingen kommentarer endnu