Electro-optical triangulation rangefinder for contour measuremen

Details Electro-optical triangulation rangefinder for contour measuremen Electro-optical triangulation rangefinder for contour measuremen

1980-04-29

1982-04-20

Punter, William H.

Optics: measuring and testing

By polarized light examination

With light attenuation

356 1, 356375, G01B 1124, G01C 310

Patent

active

043256406

ABSTRACT:
A non-contacting, electro-optical system adapted automatically to measure the contour of a shaped object held in a fixture with its contoured surface presented to an electro-optical triangulation rangefinder assembly. The assembly is constituted by a pivoted laser beam illuminator and a pivoted automatic tracker mounted for rotation at spaced pivot points on a supporting beam, the line extending between these points forming a triangulation baseline. The illuminator is caused to swing through a sector whereby the laser beam spot scans across the surface of the object being tested from one edge to the other. The angles assumed by the illuminator and those assumed by the tracker in the course of a scan are determined and fed to a computer in which the value of the baseline is stored, the computer calculating the changing spot location by triangulation.

REFERENCES:
patent: 3016464 (1962-01-01), Bailey
patent: 3180205 (1965-04-01), Heppe et al.
patent: 3381288 (1968-04-01), Van Vlodrop
patent: 3423589 (1969-01-01), Bardwell et al.
patent: 3442193 (1969-05-01), Pagel
patent: 3554646 (1971-01-01), Carlson
patent: 3633010 (1972-01-01), Svetlichny
patent: 3749501 (1973-07-01), Wieg
patent: 3951510 (1976-04-01), Lloyd
patent: 4021119 (1977-05-01), Stauffer

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