How to choose the right safety glasses for laser welding

In today's era of increasingly common use of laser technology, laser welding is also widely used in various fields. Laser welding glasses are an indispensable part of any work field or environment using laser welding. In this article, we will first analyze how to choose safety glasses for laser welding from the aspects of the advantages of laser welding.

1. What are the advantages of laser welding?

① The weld quality is high, which can achieve high-precision, high-strength and high-density connections, avoiding defects such as pores, cracks, oxidation, etc. in traditional welding. The weld surface is smooth and uniform, and the welding strength is high;

② The welding speed is fast, the energy density is high, and the melting and solidification time is relatively short, which can greatly improve the production efficiency, especially for mass production occasions;

③ Wide range of applicable materials: Laser welding can not only weld various metal materials, such as steel, aluminum, copper, nickel, titanium, etc., but also can be used for welding some non-metallic materials, such as plastics, ceramics, etc.;

④ The energy utilization rate of laser welding is high, which reduces energy consumption and production costs.

Because of these advantages of laser welding, laser welding has begun to slowly replace traditional welding. Choosing the right laser safety glasses is essential to ensure your safety and optimize your workflow.

2. Choosing the right laser welding safety glasses requires considering several factors:

①. Determine the laser wavelength

The first step is to determine the wavelength of the laser you are using. Laser wavelengths are measured in nanometers (nm) and vary depending on the type of laser:

532 nm (green laser)

808 nm - 1064 nm (infrared laser)

The laser safety glasses we choose must match the wavelength of the laser to effectively block harmful radiation.

②. Understand Optical Density (OD) Requirements

Optical density (OD) measures the ability of glasses to reduce laser intensity. The higher the OD value, the better the protection. For laser welding, the recommended OD range is generally OD4 to OD7, depending on the power level of the laser.

For example:

Low-power lasers: OD4–OD5

High-power lasers: OD7 and above

Make sure the OD matches the wavelength of the laser.

③. Look for certification standards

Quality laser safety glasses meet international safety standards to ensure reliable protection. Check certifications, such as:

ANSI Z136.1 (US laser safety standard)

EN 207 (European standard for laser glasses)

Glasses should list the certified wavelength range and OD value. Laser safety glasses from LaserPair are compliant with ANSI Z136.1 (US laser safety standard) and EN 207 (European laser eyewear standard).

④. Consider frame design

Comfort is key when wearing laser safety glasses for long periods of time. Look for features such as:

Lightweight frame

Adjustable temples or straps

Can be worn by both myopic and non-myopic people

Some designs also offer side protection for enhanced safety.

Our laser safety glasses from LaserPair meet these requirements. They are suitable for both myopic and non-myopic people. The temples of the glasses can be adjusted and they are also equipped with straps. The sides of the frames are also widened to better protect our eyes from laser damage.

⑤. Evaluate visible light transmittance (VLT)

Visible light transmittance (VLT) determines how much harmless light passes through the lens. A higher VLT ensures better visibility while still blocking harmful laser radiation. However, laser welding is generally accompanied by a dazzling white flash, which requires laser protective glasses to protect our eyes from both laser radiation and white flash. Our LP-YHP-2 DIN4 laser welding safety glasses from LaserPair are protective glasses designed specifically for laser welding.

⑥. Choose reliable brands and suppliers

Choose well-known brands known for quality and compliance with safety standards, such as:

Uvex

NoIR

LaserPair

Always buy from authorized dealers to avoid buying counterfeit products. Check detailed product descriptions and customer reviews to make an informed decision.

Summary

Choosing the right laser welding safety glasses is essential to our health and productivity. By understanding the specifications of the laser, checking for compliance with safety standards, and choosing a comfortable design, we can ensure the best protection in any laser welding environment.