The invention discloses a portable
laser-induced breakdown
spectroscopy analysis device. The portable
laser-induced breakdown
spectroscopy analysis device comprises a
laser device, a
beam splitting unit, a reflection mirror group, an off axis parabolic mirror and a
spectrograph; laser rays emitted by the laser device are transmitted to the reflection mirror group in parallel through the
beam splitting unit, and are focused on the surface of a sample to be tested after reflected with the reflection mirror group;
signal light rays emitted by the sample to be tested are emitted to the
beam splitting unit after reflected with the reflection mirror group; the laser rays and the
signal light rays are in coaxial in a light path between the beam splitting unit and the sample to be tested, are reflected to the off axis parabolic mirror through the beam slitting unit, and are transmitted to the
spectrograph after reflected with the off axis parabolic mirror, and are connected with a control boxfor
spectral analysis and display. By adopting the portable laser-induced breakdown
spectroscopy analysis device, the defects existing in a transmission-type non-coaxial spectroscopy analysis device are overcome, meanwhile
numerical aperture of focused laser rays is increased, focal spot number is reduced, the
energy density of the laser rays acting on the surface of an object is increased, an requirement of an instrument on the energy of the laser device is met, so that the portable laser-induced breakdown spectroscopy analysis device has considerably foreseeable industrial and commercial application value.