The utility model relates to the field of measuring apparatus, specifically to a fringe counter. The fringe counter comprises a lens, a photoelectric element, a power supply, an analog-to-digital converter and a display, and is characterized in that a photosensor element is arranged behind the lens; the photosensor element is connected with the analog-to-digital converter; the analog-to-digital converter is connected with the display through a data cable; and the display is connected with the power supply through a power cord. The utility model can effectively avoid the harm of laser to human bodies in experiments, can improve measuring precision, and has the significant advantages of reasonable structure, simple and convenient operation, good measuring effect and the like.