Design of lab test system for boresight of multi-channel optical axes

An electro-optical equipment to detect the boresight of multi-channel optical axes in laboratory is introduced．A collimator is adopted to provide an infinite target for the test system. An off-axis parabolic total reflection optical system is used to satisfy the full-wavelength test without central obstruction. A ZnS multispectral beam-splitter is adopted to offer pointing reference for laser spot, and a Gauss ocular with temperature controlled cross hair is adopted to offer pointing reference for visible light and infrared wave band. In this way, the boresight test between optical axes for visible light, infrared and laser is realized．This test system is accurate and reliable. According to the preliminary estimate, the measured boresight accuracy between visible light and infrared reached 4.01″, visible light and laser reached 1.08″, infrared and laser reached 4.05″. This system can be used effectively in multi-channel opticalaxes boresight test.