Optical multiple-reflection arrangement

Details Optical multiple-reflection arrangement Optical multiple-reflection arrangement

1976-01-28

1977-06-28

Corbin, John K.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

G01N 2122

Patent

active

040322360

ABSTRACT:
Optical multiple-reflection arrangement comprising a light source, a lens separated from the source by its focal length in front of a retroreflector which returns a laterally offset beam, deflection means to displace the reflected image to one side of the source, and a second retroreflector near the image, whereby the measurement path between the retroreflectors is traversed at least four times by a beam from the source.

REFERENCES:
patent: 3617756 (1971-11-01), Sick
patent: 3857641 (1974-12-01), Gass
patent: 3860818 (1975-01-01), Stalder et al.
patent: 3885162 (1975-05-01), Geertz

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