A New Combined Sandwich Method of Image Holographic Interferometry and Speckle Interferometry for 3-D Displacement Measurements
测量物体三维位移的像全息散斑夹片法

An improvement of sandwich method proposed by N. Abramson is suggested. On this paper, sandwich method of image holographic interferometry with two ference beams and speckle interferometry measurement. This method can effectively eliminate the influence of rigid body motion and those of reference light on measuring Young's fringes. Some examples are included to demonstrate the applicability of this method.