Excellent target for Vision/Optical System analysis. Ruling pattern consists of Ronchi ruling sections 1mm wide x 25 mm high. Ruling pattern sections vary in frequency from 5 to 200 lp/mm in 5 lp/mm increments for 5-120 lp/mm and then 10 lp/mm for 120-200 lp/mm. Target is ideal for quick resolution determination. Also useful for Contrast, Parallax, and MTF calculations.
Target is formed in reflective chrome on a stable glass substrate. Pattern is on top surface (right-reading looking through.)