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<sup>−1</sup> in the range of ±10 m<sup>−1</sup> is demonstrated.
© 2003 Optical Society of America
(080.3630) Geometric optics : Lenses
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
Paul K. Buah-Bassuah, Bruno Tiribilli, Massimo Vassalli, and Giuseppe Molesini, "Simple Portable Lens Meter," Appl. Opt. 42, 5086-5090 (2003)