Make tools, fittings, and small metal pieces used in other products.
Inspects precision optical and ophthalmic lenses at various stages of production to ensure specified standards have been met, using precision measuring instruments: Reads prescription and work order to ascertain lens specifications. Examines lenses for defects, such as pits, scratches, unpolished areas, bubbles, and chips, using magnifying glass and polarized light. Verifies lens dimensions, such as thickness, size, curve, and position of bifocal element, using mechanical and fixed measuring instruments, such as calibrated microscope, micrometer, and test glass. Compares lens to sample to verify specified color. Mounts lenses on optical centering and power determining instrument, adjusts dials to focus and center test pattern, and compares power, centering, and axis readings with prescription to ensure specified standards have been met. Measures properties, such as coating thickness, angles, curves, and focal length of lens, using electronic, optical, and electromechanical measuring instruments, such as spectrometer, collimator, goniometer, and facimeters. Marks and routes defective lenses for rework or salvage. May clean optics to facilitate inspection. May be designated according to stage in production as Final Inspector; In-Process Inspector; or according to type lens inspected as Camera-Lens Inspector; Contact-Lens Inspector; Instrument-Lens Inspector; Ophthalmic-Lens Inspector; Prism Inspector; Reticle Inspector.