Abstract: An optical system is coupled between a one-dimensional line image and a two-dimensional detector array. The line image is segmented and reimaged onto respective image cells of the detector array, each image cell being a row of detector cells. The optical system positionally segments the line image into lengths of a predetermined length. The predetermined length of the segments optically fit within the width of image cells within the array. The optical system reimages the line segments to image cell positions on the detector array. The optical system preferably employs diffractive (binary) optic elements.

Abstract: An optical velocity measuring device includes a pair of V/H sensors effectively located at two different distances from a moving object. Each sensor is used to determine an image velocity and a corresponding angular velocity of the object. The angular velocity measurements and the difference in distance or optical path length of the individual sensors are used to determine the absolute linear tangential speed of the object without determining the absolute distance to the object.