Measurement of concentricity of core and cladding profiles of an

Details Measurement of concentricity of core and cladding profiles of an Measurement of concentricity of core and cladding profiles of an

1989-08-17

1991-02-12

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2504611, G01N 2186

Patent

active

049926667

ABSTRACT:
Concentricity of a light-transmissive core and its cladding is measured by stimulating U-V fluorescence in the core but not the cladding, independently imaging the core/cladding boundary and the outer surface of the cladding and determining their radial separation for different angular orientations of the core and its axis.

REFERENCES:
patent: 4362943 (1982-12-01), Presby
patent: 4506947 (1985-03-01), Tatekura
patent: 4690493 (1987-09-01), Khoe
patent: 4825092 (1989-04-01), Mehadji

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