Conoscopic Holography is a simple implementation of a particular type of polarized light interference process based on crystal optics. In the basic interference set-up, a point of light is projected on a diffuse object. This point creates a light point, which diffuses light in every direction. In a Conoscopic system a complete solid angle of the diffused light is analyzed by the system. The measurement process retrieves the distance of the light point from a fixed reference plane.