Choosing the Right Type of Lens For the Job

The correct choice of lens finish plays an important part in the selection of safety glasses. Consider the following features of the varies lens type available when deciding what glasses are needed to get the job done in particular work situations.

Comparison of Lens Material

Lenses can be made from polycarbonate, plastic or glass, each with their own pros and cons.

Polycarbonate

  • Strongest material for impact resistance
  • Thinner and lighter than regular plastic or glass lenses
  • Low scratch resistance, so lenses are usually manufactured with a special scratch-resistant hard coat to increase their tolerance
  • Blocks 99.9% of UVA/UVB rays without any extra or special coatings
  • Most commonly used lens material for safety glasses.

Plastic

  • About one-half the weight of glass
  • Resistant to solvents and pitting
  • Better ultraviolet (UV) light protection than glass.
  • More choices for coatings and tinting.

Glass

  • Hardest lens material, twice as heavy as plastic lenses.
  • Offers the best protection against scratches
  • Can shatter more easily than plastic lenses
  • Don't provide as much protection from the sun's harmful ultraviolet (UV) rays.s