Simple portable lens meter.
A device measuring the optical power of simple lenses by means of moiré phenomena is described. The relevant equations are derived, and a working instrument is presented. A power measuring accuracy better than 0.25 m(-1) in the range of +/- 10 m(-1) is demonstrated.
Buah-Bassuah
Paul K
PK
Laser and Fibre Optics Centre, Department of Physics, University of Cape Coast, Cape Coast, Ghana.
Tiribilli
Bruno
B
Vassalli
Massimo
M
Molesini
Giuseppe
G