Why high quality sunglasses is expensiver much than cheap sunglasses

High quality sunglasses have so much knowledge, let's take a look together

Many people wonder: high quality Sunglasses don't seem to use much material, why are they so expensive?

In fact, its manufacturing involves multiple fields such as optics, materials science, and ergonomics, each of which requires professional knowledge and skills.

1. The principle of sunglasses

The main function of sunglasses is to block ultraviolet rays. Do you know? There are three types of ultraviolet rays in sunlight: UVA, UVB, and UVC. UVC is absorbed by the atmosphere, so it mainly blocks UVA and UVB. These two types of ultraviolet rays can cause serious damage to the eyes. Long term exposure can lead to eye fatigue, dryness, inflammation, and even cataracts and other eye diseases. The anti UV function of the product mainly depends on the material of the lens. Among them, polycarbonate is the most commonly used material because it can effectively block ultraviolet rays, while also having good impact resistance and portability.

2. Design of Sunglasses

The shape of the frame directly affects the wearing comfort and visual effect of the product.  Acetate is one of the best material to make high quality glasses frames, it owns good performance of anti scratch, extension, handle and colorful diversity. The material of the lens determines its optical performance and service life. High quality lenses are usually made of special materials such as Nylon, high-definition, scratch resistant, and anti fog, and some also have other functions. For example, some products also have polarization function, which requires professional design.

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3. Quality

Quality inspection is a crucial step in ensuring high quality of sunglasses. The products produced need to undergo a series of strict quality inspections, including the size, optical performance, and UV resistance of the frame and lens. Only products that have passed the inspection can be considered qualified. When selecting, not only should their appearance design be considered, but also their professionalism and quality should be emphasized.

Why high quality sunglasses is expensiver much than cheap sunglasses

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