Helmet lens What are the main aspects?
The black lenses of some helmets can block ultraviolet rays, while the black lenses of other helmets cannot block ultraviolet rays.
First, the helmet lens is black, which is a filter. This is a cheap accessory that can significantly change the appearance of your photos.
Here is how the helmet lens works:
Prevent eye dizziness, reduce eye fatigue, improve resolution, and play a certain role in heat insulation.
Secondly, for color photography, prepare several basic compensation filters and several special effect filters, which will be discussed later.
3. If you want to be different from black and white, you are suggested to bring three basic filters in your photo bag: medium yellow, light green and red.
When cleaning the inside of the helmet, dirt often accumulates after a long time of use, producing an odor. In this case, cleaning should be carried out. The detergent used should be neutral shampoo, shampoo is preferred. In order to avoid odor left by detergent, its use should be controlled. When brushing the helmet, do not use too much force.
Otherwise, the cushioning material will deform and lose its cushioning function. After cleaning, dry the water with towel or paper towel and place it in a ventilated place for natural drying. Do not use a hair dryer.
Our helmets need regular cleaning. It is very important to keep them clean. I hope this is helpful.
Some of the foam cushioning materials in helmets have low density, which can not even be compared with the foam pads in household appliances. They will break if you gently dig them - not in line with scratches.
Some linings are uncomfortable to the touch, so choose carefully.
Motorcycle helmet price
Watch it. Dirty factories make helmets from recycled materials. If the helmet is slightly dropped, it will break and become smelly and soft in the sun. The garbage may contain some toxic and harmful substances in the recycling process. Because helmets are cheap, many people buy them. For safety, we cannot be greedy.
How to buy motorcycle helmets and how to wear motorcycle helmets when driving and riding motorcycles are clear provisions of China's road traffic regulations, and are important measures to ensure the safety of motorcycle drivers and passengers. If you wear a helmet, please wear a helmet. Therefore, it is necessary to master some knowledge of safety helmets, purchase safety helmets, use and maintain safety helmets correctly.
The shell of the helmet plays an important role in the safety of the helmet, so the selection of its material is very important. The general materials are ABS and glass fiber. Good helmets are made of carbon fiber, but they are expensive.
Buffer layer The main function of the buffer layer is to absorb external shocks. Imagine a hard shell helmet without cushioning. When impacted by external force, the external force will directly act on the head through the hard shell, thus damaging the head. Therefore, the thickness of the buffer layer and the quality of the material determine the buffer capacity of the helmet. The buffer layer is mainly made of polystyrene foam.
The main function of the lining is to enhance the comfort of wearing, which is generally made of soft flannelette.
The hat band is used to fix the helmet firmly on the head. Its combination includes camphor type, ring buckle type and paste type.
The chin jacket is part of the helmet, which means there are more jackets under the nose to protect the lips and chin. When impacted, it gives more protection to the face. Usually has a complete helmet. Air inlet and outlet.
Goggles protect eyes and face. Its materials include plastics (such as polycarbonate resin) and reinforced glass (such as PMMA resin), of which the reinforced glass has excellent scratch resistance. Readers are advised to choose goggles of good quality as far as possible, because goggles of poor quality are easy to break and pierce the face during impact.
