フレネルホログラムを用いた相関計

抄録

This paper analyzes the conditions to get correlation pattern of two diffusing patterns A and B using Fresnel hologram. These conditions are as follows:
(1) When recording a hologram, pattern A and reference beam are arranged symmetrically with respect to the axis which the fixed origin on hologram and vertical to the hologram plane.
(2) When reconstnlcting a hologram, the distance between pattern B and the fixed origin is made equal to the distance from pattern A to the origin.
(a) In the case of conjugate image, incident angle of pattern B is coincident with that of pattern A.
(b) In the case of direct image, it is coincident with that of reference beam. The above conditions are only realized at the fixed origin on hologram.