This unique target was developed to standardize an area of optical tolerancing that is most commonly determined theoretically. Our extensive experience in designing optical systems has shown that depth of field calculations can often yield very misleading results. This target solves the problem and very accurately determines the amount of shift an object can undertake before producing an unacceptable image. The definition of what constitutes an acceptable image is determined by the user and the application.
The DOF 5-15 is made up of two sets of scales. Each, when viewed at 45°, consists of horizontal and vertical lines at a frequency of 5 and 15 line pairs per mm. Instructions included.