Lensometer is an instrument used for measuring the dioptre of spectacle and contact lenses, direction determination of the axes of cylilndrical lenses, prism effects, and also for marking the spectacle lenses.
In this project, having defined the optical system of lensometer and specified its optical elements along with their specifications, a complete system was designed, manufactured, mounted, and tested.
The results were compared with the results obtained with the standard types. There was no considerable difference.