Lens Hardener

Tend electric oven-type machines that harden lenses.
picture of Lens Hardener

Quick Stats

Salary Range
$22,000 – $51,000

Data from U.S. Department of Labor

What do Lens Hardeners do?

Tends electric oven-type machine that hardens lenses used in safety eyeglasses, and tests hardness of lens, using steel-ball drop-test: Measures lens thickness with calipers to determine if lens meets thickness requirements for prescribed hardening. Positions lenses in holding fixture and pushes fixture into electric oven. Sets timer and temperature controls on oven according to chart specifications for prescribed hardness of lens. Removes lenses at end of cooling cycle, or places lenses in airflow to cool. Holds finished lens in polarized light fixture to detect defects produced by hardening. Places lens on bed of drop-test fixture and covers lens with cloth or plastic. Places steel ball of specified weight in release mechanism of fixture. Positions mechanism at specified distance from lens and releases ball. Discards broken lenses.

Should I be a Lens Hardener?

You should have a high school degree or higher and share these traits:
  • Flexible: You're open to change and think variety is the spice of life.
  • Reliable: You can always be counted on to do a good job.
  • Team Player: You're able to listen, communicate, and work with tons of different people.

  • How to become a Lens Hardener

    Most Lens Hardeners have no higher education and get on-the-job training. Think about earning a Certificate to increase your competitiveness in the field. Chart?chd=s:a9baaa&chl=|no+college+%2897%25%29|certificate+%283%25%29|||&cht=p3&chs=466x180&chxr=0,0,97
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