Film viewer and analyzer and method

Optics: motion pictures – Methods – Applications

Patent

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Details

356396, G03B 1918, G03B 2132

Patent

active

044822227

ABSTRACT:
An image viewing device is provided with movable projectors which superimpose illuminated marks on the image. Each projector can signal its location relative to a rest position and, by aligning the illuminated marks with selected features on the image, the distance between the features can be determined and displayed. Signal storage means permit comparisons between successive measurements. The viewing device can translate and rotate the viewed image so that the selected features can be aligned with the travel direction of the movable projectors.

REFERENCES:
patent: 3031923 (1962-05-01), Heidenhain
patent: 3131483 (1964-05-01), Koenig
patent: 3369444 (1968-02-01), Patrignani
patent: 3985448 (1976-10-01), Wiklund et al.

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