公开(公告)号：US20210116367A1

公开(公告)日：2021-04-22

申请号：US17044390

申请日：2019-06-20

Applicant: Lumus Ltd.

Inventor： Jonathan GELBERG ,  Yuval RUBIN ,  Michael ADEL

IPC: G01N21/45 ,  G01J9/02 ,  G01M11/00 ,  G01M11/02

Abstract: A system and method for measuring refractive index inhomogeneity between plates of a Lightguide Optical Element (LOE) uses an innovative measuring technique based on a shearing interferometric technique conventionally used to observe interference and test the collimation of light beams. Another feature of the current implementation is an innovative method for analyzing the characteristics of the generated interferogram to characterize discrepancies between adjacent plates in an LOE.