Dimension measuring apparatus

Details Dimension measuring apparatus Dimension measuring apparatus

1974-12-13

1976-07-20

Stolwein, Walter

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250560, 356156, H01J 314

Patent

active

039708470

ABSTRACT:
The present invention provides a measuring apparatus comprising at least four photocells adapted to be simultaneously, synchronously displaced in a common plane on respective linear paths for scanning a projected image of a zone to be measured, said paths being arranged to intersect at a single point whereby the photocells are caused to move radially relative to that point in scanning the image.

REFERENCES:
patent: 2810316 (1957-10-01), Snyder
patent: 2931917 (1960-04-01), Beelitz
patent: 2941087 (1960-06-01), Blumberg et al.
patent: 3513247 (1970-05-01), Anderson et al.

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