ENDOSCOPE WITH DISTANCE MEASUREMENT FUNCTION AND DISTANCE MEASUREMENT METHOD

摘要: An endoscopic distance measurement method, which causes a single wavelength light source in an observation unit at front end of flexible tube endoscope to emit predetermined object be measured via diffraction grating so as form zero-order bright spot, positive first-order spot and negative on the surface objectthrough optical diffraction, then capture image from capturing endoscope, calculate magnification using first arithmeticlogic calculating host actual between two adjacent spots being projected second arithmetic logic third logic.