The focimeter is a necessary tool for any optician. It responds to the need to have stable reference samples that allow each optician to offer, on the one hand, optically excellent lenses and, on the other, to demonstrate the precision and reliability of the instrumentation in the event of disputes and complaints. The legislation currently in force for consumer protection presupposes that the accuracy and reliability of the instrument, the procedures and the registrations that are performed in the verification process must be demonstrated.
The calibration set for front focometers is equipped with 12 samples suitable to cover the whole range of powers of the lenses of common ophthalmic use. The interval with neighboring steps is designed to ensure control of all measurable powers. The lenses are made with quality optical glass and with technologies used exclusively for the realization of fine optics. For the unambiguous identification of the pieces and for their protection, the lenses are inserted in a plastic frame on which the nominal power and the serial number of the set are engraved.
For cylindrical lenses this data is engraved directly on the lens glass.