Method for aligning two reflective surfaces

Details Method for aligning two reflective surfaces Method for aligning two reflective surfaces

1993-07-15

1995-01-17

Evans, F. L.

Optics: measuring and testing

Angle measuring or angular axial alignment

Sides of angle or axes being aligned transverse to optical...

356138, 3561522, 250561, G01B 1126

Patent

active

053830164

ABSTRACT:
First and second plates (10 and 12), each having a reflective surface (14) opposite the reflective surface on the other plate, are aligned substantially parallel to each other by first separating the second plate (12) from the first one. A beam of collimated light (24) is then directed at the first plate (10) so the beam is reflected along a path lying in the field of view of a light detector (26). The second plate (12) is then positioned relative to the first plate (10) so that the beam (24) is reflected from the second plate onto the first plate for reflection therefrom onto the second plate so as to undergo at least one reverberation before being reflected from the second plate into the light detector so as to appear at substantially the same point before the plates were separated.

REFERENCES:
patent: 4774405 (1988-09-01), Malin
patent: 5042945 (1991-08-01), Shibata et al.

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