A Mecmesin Vortex-i torque tester is
helping an optics company deliver
vision to sight-challenged people in
the developing world. Adlens makes
adjustable lenses and has an
innovation centre in Oxford. Its
liquid-filled lenses let the wearer selfadjust
magnification of their
spectacles manually. Lenses are
adjusted by thumb-and-finger
rotatable dials on the frame and are
detachable once the correct
magnification has been selected.

A Mecmesin Vortex-i computercontrolled
torque tester is used to
ascertain that rotating components of
the lenses are reliable and easy to use.

A sample lens, with dial attached is
fitted to a special fixture on the
Vortex-i. The Vortex-i is preprogrammed
to perform 10 or 1.5
rotations, 1.5. for end-of-line checks,
and 10 for destructive verification
testing. The graphical representation,
provided by the systems software,
Emperor, means easy identification of
anomalies in the dials movement.