Arc-shaped divergent array speed measuring probe and speed measuring method

The invention discloses an arc-shaped divergence array speed measurement probe which comprises a light beam divergence 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, the light beam divergence control module diverges the plurality of emergent rays, and the diverged rays intersect at the focus of the light beam divergence control module towards the extension line of the array velocity measurement probe module; the focus is located at the center of the concave surface section of the to-be-detected material; and the array speed measurement probe module receives light reflected by the to-be-measured part of the concave surface part of the to-be-measured material. The invention further discloses a single-row arc-shaped divergent array speed measurement method. The device is applied to speed detection of the concave surface part of the material under detonation loading, the device is very con