Selecting the right lens material for safety glasses is essential to ensuring maximum comfort and protection. Four materials stand out among the many options: Trivex, polycarbonate and high-index plastics. Each material has its own benefits and limitations. The selection process is tailored to the individual's needs and environment. We'll do a comparison to help you choose your safety glasses.

POLYCARBONATE FILM: THE IMPACT RESISTANT WARRIOR

The polycarbonate lenses offer unbeatable impact resistance and are therefore a popular choice for Safety Glasses. Originally developed for aerospace, these lenses offer superior protection with less weight. They are up to 10x more impact resistant than plastic or glasses.

PROS

Lightweight, UV protection, and exceptional impact resistance.

CONS

These lenses offer a slightly lower optical clarity than other alternatives, and are more likely to scratch without a protective layer.

TRIVEX: The CLARITY CHAMPION

Trivex safety lenses are a relatively new entrant to the market. They offer a great balance between optical clarity and impact resistance. These lenses are similar to polycarbonate in terms of impact resistance, but they offer better clarity. They also have a higher Abbe rating which reduces chromatic distortion for the wearer.

PRODUCTS

Lightweight, excellent optical clarity and UV protection.

CONS

The lower index of 1.530 makes it slightly thicker and more expensive.

High-Index Plastic Lenses: The Sleek Solution

Plastics with high-index are ideal for those who want thinner and more attractive lenses, without compromising on vision correction. These lenses are perfect for those with strong prescriptions. They reduce the thickness of the lens and its weight. This can be beneficial for safety eyewear that is designed to provide long-term comfort.

PROS

These lenses are thinner and lighter than trivex or polycarbonate standard lenses. They are suitable for prescriptions with strong strengths.

CONS

It is less impact resistant than Trivex or polycarbonate, but it's more expensive and requires additional UV protection coatings.

GLASS LIENSES: A TRADITIONIST'S CHOICE

The oldest eyewear materials are glass lenses , which are prized for the excellent optical clarity they provide and their resistance to scratches. They have fallen out of favour for safety applications because they are heavy and susceptible to breaking upon impact.

PRODUCTS

High-quality optical clarity and scratch resistance.

CONS

The material is heavy, but it can break upon impact. It's also less comfortable to wear for long periods of time, has no UV protection and only meets Z87.1 safety standards.

Making the right choice for your needs

Consider the demands of the environment you work in and the main attributes that you require from a safety lens.

FOR MAXIMUM INVESTIGATION RESISTANCE

Trivex and polycarbonate lenses offer superior optical clarity, while Trivex is slightly lighter.

FOR OPTICAL CORRECTION IN THIN LENSES

Plastics with a high index are perfect for prescriptions that require safety features, such as strong medications.

FOR TRADITION OPTICAL CLEARNESS

Glass lenses are known for their clarity and scratch resistance. However, they should not be used in high-risk environments because of the weight and risk of shattering.

CONCLUSION: a CLEAR Vision for Safety

There are many options for safety lenses. Polycarbonate, Trivex and high-index plastics offer a variety of choices tailored to specific needs. There's a lens type for every need, whether it is optical clarity, impact resistance or aesthetic appeal. Understanding the strengths and limits of each lens material will help you choose the right safety eyewear for your vision.

WHAT MARK APPEARS ON THE FRAME OF INDUSTRIAL-CERTIFIED SAFETY GLASSES?

Understanding the markings on your safety glasses will help you know what your glasses protect you from. Markings can feel overwhelming when it comes to industrial quality safety glasses. However, it’s crucial for both personal and professional safety. Let’s break this down into easy-to-understand pieces, ensuring you can make an informed choice about your eye protection.

DIFFERENT TYPES OF RATINGS

Safety glasses are primarily evaluated based on their ability to withstand impact, optical clarity, and sometimes their resistance to chemicals or radiation. The most common standards you’ll encounter are set by the American National Standards Institute (ANSI) and the European Committee for Standardization (EN).

ANSI Z87.1

This is a prevalent standard in the United States. Glasses that meet or exceed this standard are marked with “Z87” (standard impact) or “Z87+” (high impact) on the frame or lens. The “+” indicates a higher level of protection against high-velocity impacts.

EN 166

This European standard is similar to ANSI’s, with ratings for basic (S), increased (F), high (B), and very high (A) energy impacts. Frames and lenses meeting this standard will have “EN 166” followed by a letter indicating the level of protection.

MILITARY BALLISTIC STANDARDS

Some glasses meet military ballistic standards for highly hazardous environments, offering even higher levels of impact protection. These are often marked with “MIL-PRF-31013” for spectacles or “MIL-DTL-43511D” for goggles, indicating compliance with military specifications.

MARKINGS ON FRAMES

On the frame of industrial quality safety glasses, the markings provide a quick reference to the level of protection offered. For ANSI Z87.1 compliant glasses, look for:

Z87

Indicates basic impact resistance. Suitable for general protection against flying debris and particles.

Z87+

Signifies high-impact resistance. These are recommended for high-risk environments where high-speed particles or objects pose a threat.

LENS MARKINGS

Besides the frame, lenses might also have markings indicating additional protections, such as “U” for UV protection, “L” for light filtering, or “W” for welding applications.

BASIC IMPACT (Z87)

These glasses are your standard safety glasses. They’ll protect your eyes from dust, debris, and low-speed impacts — ideal for most shop work or general construction.

HIGH IMPACT (Z87+)

These are your heavy-duty protectors. If you’re working with power tools, heavy machinery, or in environments where high-speed particles are a concern, these are your go-to.

EN STANDARDS

For those in Europe, EN 166 provides a similar tier of protection, from basic to very high energy impacts. The specific letter marking (S, F, B, A) will guide you to the right choice based on your risk level.

MILITARY STANDARDS

For the ultimate protection, especially in tactical or extreme industrial environments, look for military-grade markings. Designed to withstand ballistic impacts, often used by law enforcement and military personnel.

In conclusion, understanding the markings on your safety glasses can make a huge difference in ensuring eye protection. Whether you’re in a low-risk environment requiring basic impact protection or a high-risk area where high impact resistance is necessary, there’s a pair of safety glasses designed to meet your needs. When selecting your next pair of industrial-quality safety glasses, always look for these crucial markings to ensure your eyes are well-protected against potential hazards.