Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1995-04-27
1997-02-04
Turner, Samuel A.
Optics: measuring and testing
By particle light scattering
With photocell detection
356359, G01B 902
Patent
active
056004397
ABSTRACT:
A self-calibration system and method (125) determines the adequacy of an interferometer angle .phi. and surface curvatures in an inspection system (90). The inspection system (90) can contactlessly measure the disparity between two surfaces, such as the undercut or protrusion of an optical fiber (26) relative to a surrounding support material (36) at the endface (79) of an optical fiber termination (37). The inspection system (90) measures an offset of the fringe (113') in the image over the target (25') in the image (111a, 111b, 111c) in order to determine the disparity. In structure, the inspection system (90) has a measurement apparatus (91) with an interferometer (98) situated at the angle .phi. relative to the target (82) controlled by a machine vision system (92) for determining the degree of disparity. Further, the machine vision system (92) preferably employs the self-calibration system and method (125).
REFERENCES:
patent: 4738507 (1988-04-01), Palmquist
patent: 4738508 (1988-04-01), Palmquist
patent: 4787698 (1988-11-01), Lyons et al.
"Checkmate F5 System Instruction Manual," Oyokoden Lab Co., Ltd. (at least as early as 1991).
"Norland Fiber Interferometer," Norland Products Inc., New Brunswick, NJ. (1992).
"ZX-1 Zoom Interferometers," Direct Optical Research Company, Phoenix, AZ (at least as early as Jan. 1995).
"TOPO-3D Quick Tour Manual," Wyko Corporation, Tucson, AZ., Ltd. (Feb. 1990).
Csipkes Andrei
Palmquist John M.
Kim Robert
Lucent Technologies - Inc.
Turner Samuel A.
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