What is the primary function of protective goggles in soldering and brazing?

The primary function of protective goggles in soldering and brazing is to protect against bright light. When soldering or brazing, various processes can produce intense light, particularly from open flames or bright solder material. This bright light can be harmful to the eyes, causing discomfort or even permanent damage if adequate protection is not used.

Goggles designed for this purpose typically have lenses that filter out harmful rays, ensuring that the eyes are shielded from excessive brightness and potential injury. In addition to protecting against bright light, these goggles also help in shielding the eyes from splashes of molten solder and flying debris that may occur during the soldering process. Thus, while enhancing visibility, preventing gas inhalation, and keeping eyes warm might be secondary considerations, the primary concern in this context is the safety and protection of the eyes from bright light and other hazards associated with the soldering and brazing processes.