Multispectral optical axis repeated positioning detection device and detection method

The invention discloses a multispectral optical axis repeated positioning detection device and a detection method. The device comprises a theodolite part, a zero position detection part, a detected equipment part and a precise plane mirror, the high-precision theodolite is mounted on the theodolite mounting platform; the zero-position detection light pipe is mounted on the detection light pipe mounting platform; the zero position detection light tube and a detected product form an alignment light path; a detected product is mounted on the detected product mounting platform; the precise plane mirror is bonded on a detected product and forms an auto-collimation light path together with the theodolite. And detecting by using a detection device to obtain the optical axis change of the optical channel before and after the test of the tested product. Compared with the prior art, the optical axis repeated installation positioning detection device has the advantages that the machining requirements of multi-optical-ax