Micro nano-scale fiber high precision measuring method based on optical microscopy

The invention discloses a high-accuracy measuring system of novel micro-nano scale fiber based on optical microscopy, which is composed of a micro-optical amplification system, a photoelectric conversion device and a computer aided measuring system. The measuring system of the invention is characterized in that: an annular LED is adopted as a system light source for irradiating on a sample to be measured, and after reflected light passes through a light filter adaptive to the system, a fiber image is amplified by the micro-optical amplification system to form a microimage of high quality; through a CCD, an optical signal is transferred to an electrical signal and through an analog-digital converter, a digital signal is transmitted into a computer host; a matching image measuring system isused for pretreatment and measurement of a collected fiber digital image; finally, fiber morphological parameters obtained by the measurement are displayed. The system of the invention can collect themicroimage of high quality and has the advantages of high measuring accuracy, good reliability, low cost, wide measurement range and the like.