What are the basic knowledge about PC lenses?

What are the basic knowledge about PC lenses?

PC lenses are also called "space tablets" and "cosmic tablets". The chemical name is polycarbonate, which is a thermoplastic material (that is, the raw material is solid, and the lens is also solid after being heated), so this lens is too heated after it is finished. It will deform and is not suitable for high humidity and heat.

1. The PC lens has extremely strong toughness and is not broken (2cm can be used for bulletproof glass), so it is also called a safety lens. With a specific gravity of only 2 grams per cubic centimeter, it is currently the lightest material used in lenses. If there is no problem in the process, the weight is 37% lighter than the general resin sheet, and the impact resistance is 12 times higher than the general resin!

2. The PC lens has good anti-ultraviolet performance and is not easy to yellow. Therefore, it is very suitable for use in sports and can effectively ensure the safety of sports.

3. Made of polycarbonate materials, degradable lenses, environmentally friendly products, national initiative.

4. The lens aspherical process design reduces the aberration and makes the impression more real.

2. Reasons why PC lenses are not popular

1. Frequently priced up by the eyewear store (often raised to a high price of several thousand yuan in the eyewear store);

2. Lens cutting machine or lens edging machine that is easy to damage the store (the store does not love);

3. Slightly more expensive than resin lenses

4. Very little inventory and scarce supply.

Third, the suitable group of PC lenses

1. Elementary and middle school students: PC lenses in European and American countries have become the primary and middle school students to wear the safest lenses

2. Athletes: As the athletes will have some fierce confrontation, the strong impact of the PC lens can better protect the eyes.

3. Those with low-degree frameless frames: PC lenses can prevent the occurrence of chipping and cracking at the punching holes of general resin lenses.

Fourth, the maintenance method of PC lenses

1. The cotton lens cloth should be used when wiping the PC lens, but it is not possible to wipe the lens often. Because the PC is neutral, it often generates static electricity and will absorb the oil fumes in the air, which will damage the lens.

2. When cleaning, use alcohol or neutral detergent to wipe the test, then rinse with water, and finally use a cotton mirror cloth or a soft paper towel to absorb the water.

5. Attention in daily life

1. Don't bring your glasses into the bathroom or high-temperature places, and don't put them on the platform of the car.

2. If you want to spray hair gel or gel water on your hair, take off the glasses and spray again. If you don't pay attention to the above situation, it will cause peeling.

3. The rival of PC tablets is nail polish remover. Normally, do not touch the lens. Currently, PC lenses are not widely used due to price reasons.