The impact resistance of one-piece diving lenses comes first from the special materials used. This type of glass usually uses materials such as tempered glass or polycarbonate, which have high toughness and tensile strength. Compared with ordinary glass, they can withstand sudden external impacts better. When encountering rocks, corals or other hard objects underwater, the tempered glass can absorb part of the impact force and reduce the possibility of shattering. Even if a collision occurs, it is not easy to produce sharp fragments, reducing the risk of injury to the eyes and face.
The thickness of the glass is closely related to the impact resistance. Reasonable thickness design can enhance the protection without affecting the field of vision. Too thin glass is difficult to withstand a large impact, while too thick will increase weight and affect light transmittance. The thickness of one-piece diving lenses has been optimized to maintain its lightness while forming a sufficient barrier. When a collision occurs, the impact force is dispersed through its own thickness to avoid external force acting directly on one point, thereby reducing the probability of glass breakage and providing basic protection for underwater activities.
The surface treatment process further enhances the impact resistance of one-piece diving lenses. Many one-piece diving lenses are hardened to form a hard protective film. This film can enhance the surface hardness of the glass and reduce scratches or cracks caused by minor collisions. When encountering small sand and gravel impact underwater, the hardened layer can first withstand the impact and protect the main body of the glass from damage; even if a more serious collision occurs, this film can slow down the spread of cracks, buy reaction time for users, and reduce the immediate risk caused by the collision.
The connection between one-piece diving lenses and the frame also plays an auxiliary role in impact resistance. The frame is usually made of elastic material and fits tightly with the edge of the glass to form a certain buffer structure. When the glass is hit, the elasticity of the frame can absorb part of the impact force, reduce the force transmitted to the glass, and prevent the connection between the glass and the frame from breaking due to stress concentration. This overall design allows the glass and the frame to form a coordinated protection system instead of bearing the collision pressure alone, which improves the overall impact resistance of the diving goggles.
Impact resistance is also reflected in the anti-shattering characteristics of the glass. High-quality one-piece diving lenses are designed with safety in mind after breaking. Even if they break under strong collision, they will show blunt-angled fragments or cracks instead of sharp debris. This feature avoids the risk of fragments scratching the skin or piercing the eyes. Especially in underwater environments, it can reduce secondary injuries caused by glass shattering, allowing users to remain relatively safe after encountering a collision, buying time for evacuation or handling the situation.
According to the collision risks in different underwater environments, the impact resistance of one-piece diving lenses will be optimized in a targeted manner. For example, the impact resistance standard of diving goggles used for deep diving or cave diving will be higher, because the probability of encountering rock collision in these environments is greater, and once a danger occurs, the difficulty of rescue is also higher. Although the impact resistance of models used for snorkeling or recreational diving is slightly lower, it can also meet the needs of minor collisions that may be encountered in daily underwater activities. This differentiated design matches the impact resistance with the usage scenario to ensure the effectiveness of protection.
The edge treatment of the glass also affects the safety during impact resistance. The edges of one-piece diving lenses are usually polished and hemmed to remove sharp edges and corners, and then wrapped with frame material. When the glass is subjected to force due to a collision, the rounded edges can reduce stress concentration and reduce the possibility of breakage; even if the glass is damaged, the hemming can fix the fragments to prevent them from falling off or splashing. This kind of detailed treatment makes the impact resistance not only reflected in the glass itself, but also extends to the safety of the overall structure, fully coping with the risks that may be caused by underwater collisions.
