PROBE UNIT FOR PHOTOACOUSTIC ANALYSIS AND PHOTOACOUSTIC ANALYSIS APPARATUS

摘要

[Problem] To prevent output of measuring beams in unnecessary directions in photoacoustic analysis using a probe unit. [Solution] An photoacoustic analysis probe unit (80) is equipped with a probe unit body (70), a sliding member (81) provided so as to be movable forward and backward relative to a housing member (71) in the longitudinal direction of the probe unit (80), a closeable cover member (82) configured from a light-blocking material, and an elastic member (84) provided to apply a forward elastic force on the sliding member (81). The cover member (82) is configured to cover a detection surface (3s) when closed, to open and close in conjunction with the forward and backward movement of the sliding member (81), and to open from a closed state when the sliding member (81) moves from a forward position to a backward position.