Arc centripetal array speed measuring probe and speed measuring method

The invention discloses an arc-shaped centripetal array speed measurement probe which comprises a light beam convergence control module and an array speed measurement probe module which are arranged adjacently. The array velocity measurement probe module provides a plurality of emergent rays, and the light beam convergence control module converges the emergent rays to a focus of the light beam convergence control module; the focus is located at the circle center of the convex surface section of the to-be-detected material; and the array speed measurement probe module receives light reflected by a to-be-measured part of the convex surface part of the to-be-measured material. The invention further discloses a single-row arc centripetal array speed measurement method. According to the single-row arc centripetal array velocity measurement probe and the velocity measurement method, the size of a convergent focus within 1mm can be realized, and the positioning precision can reach 0.02 mm; only one field debugging a