Home – Home – Jornals – Avtometriya 2004 number 5

Results of investigating the technique of measuring the diffraction efficiency of optical elements, which is based on scanning an element surface by a light beam with a limited aperture, are presented. Results of measuring the diffraction efficiency of a Fresnel lens, which are obtained by integral and scanning techniques are compared. The concept of a device for diffraction efficiency measurement by the two methods is considered. Experimental results are discussed.