Micro-displacement measuring device using laser

摘要

The objective of the present invention is to provide an objective lens which has a pinhole at an output end to which light is irradiated for irradiating a displacement to which a phase is slightly moved and is provided with a laser for irradiating light through the pinhole, A driving inspection body for adjusting the degree of diffraction of light passing through the lens and a telescope for observing the light passing through the objective lens can be optically inspected with the driving characteristics of two axes, And more particularly, to a micro displacement measurement apparatus using a laser which is easy to configure and improved in productivity.