公开(公告)号：US20170122879A1

公开(公告)日：2017-05-04

申请号：US14930069

申请日：2015-11-02

Applicant: THE BOEING COMPANY

Inventor： Michael J. SCHAFFER

IPC: G01N21/93 ,  G01N21/88

CPC classification number: G01N21/93 ,  G01N21/8803 ,  G01N21/954 ,  G01N2201/13 ,  G02B27/62

Abstract: A borescope calibration device is provided that includes a base having a planar surface and a plurality of reference surfaces on a side of the base opposing the planar surface, each of the plurality of reference surfaces having a height that decreases along a length of the base, a fixture that positions an optical head along a reference line that is parallel to the planar surface and providing a fixed distance between the reference surfaces and the optical head, the fixture being movable along a length of the base, and a target pattern formed on each of the reference surfaces.