Method of checking collinearity

Details Method of checking collinearity Method of checking collinearity

1988-11-30

1989-11-14

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

Alignment of axes nominally coaxial

G01B 1127

Patent

active

048803065

ABSTRACT:
For a device having first and second, centrally-bored conduits in substantially collinear alignment along a longitudinal axis, the method checks collinearity of the conduits. Each conduit has a discrete inside diameter, and the method comprises directing light through the conduit which has the greatest inside diameter and displaying the light on a planar surface, downstream thereof, as a circular image. Then, light is directed through a second of said conduit create an emerging beam, and displaying the beam on the planar surface to ascertain its central, or offset, impingement relative to the circular image.

REFERENCES:
patent: 3800388 (1974-04-01), Borner et al.
patent: 3892488 (1975-07-01), Edmonds
patent: 3999841 (1976-12-01), Dakss et al.
patent: 4289374 (1981-09-01), Franken et al.
patent: 4294546 (1981-10-01), Killmann et al.
patent: 4474469 (1984-10-01), Abe
patent: 4738174 (1988-04-01), Bloomquist

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