FOLDED PATH SEQUENTIAL SCREENING SHADOWGRAPH
Original Publication Date: 1980-Feb-29
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
A screening shadowgraph for a copier optical system is shown in the figure. The device comprises a small lamp having a filament 2, parallel mirrors 4, 6, baffles 8, 10, a beam directing mirror 12 and a screen 14. The mirrors are masked in areas 4A, 6A to prevent overlapping of the beams creating, in effect, parallel rows of mirror segments 4', 6'.