Illumination measuring device

The utility model provides an illumination measuring device, which comprises a measuring probe, and is characterized in that a measuring surface adjusting mechanism is arranged on the measuring probe, the measuring surface adjusting mechanism comprises a plurality of light blocking pieces and an adjusting assembly, the plurality of light blocking pieces are arranged in an annular array, and a light passing area is formed in the central area of each light blocking piece; the adjusting assembly is connected with the light blocking piece and can adjust the position of the light blocking piece. The measuring probe has the advantages that the area of the measuring surface of the measuring probe can be adjusted by arranging the light blocking sheet, that is, only the luminous pattern passing through the light passing area can be received by the measuring surface of the measuring probe, and the rest part of the measuring surface of the measuring probe is covered by the light blocking sheet; therefore, more accurate