Portable optical axis detection module for dual-wavelength laser reconnaissance system

The invention discloses a portable optical axis detection module for a dual-wavelength laser reconnaissance system. 1.06 [mu]m laser and 1.57 [mu]m laser output by equipment to be detected are combined by a beam combining prism and then enter a beam splitting compensation prism group through a focusing objective lens group; the light splitting compensation prism group outputs first reflected lightwith the wavelength of 1.06 [mu]m, second reflected light with the wavelength of 450-650nm and third reflected light with the wavelength of 1.57 [mu]m, and the attenuated first reflected light, the attenuated third reflected light and the second reflected light are combined by the beam combining compensation prism and then enter the light splitting prism; and the two parts of light split by the beam splitter prism respectively enter the InGaAs imaging assembly and the reticle. The module can achieve the precise detection of the laser optical axis pointing stability and optical axis parallelism error of the dual-wavel