Multiple magnification contour projector

Details Multiple magnification contour projector Multiple magnification contour projector

1998-03-16

1999-11-30

Dowling, William

Optics: image projectors

Structurally related projector and screen

Profile or silhouette

353 66, 353101, 356391, G03B 21261

Patent

active

059930098

ABSTRACT:
Several different magnification lenses are adjustably mounted in a contour projector housing for movement selectively and one by one into operative registry with an entrance lens that faces a workpiece that is to be inspected. Spaced illuminators in the housing direct light beams onto opposite sides of the workpiece to produce combined profile and surface images thereof that are projected by the entrance lens and the registering magnification lens onto the reflective surface of a first mirror. This mirror projects the combined, magnified images in the housing onto a second mirror, which then projects the combined images onto a projection screen mounted in the housing for observation by the person using the projector.

REFERENCES:
patent: 2552238 (1951-05-01), Turner et al.
patent: 2552272 (1951-05-01), Fultz
patent: 2552280 (1951-05-01), Hudak
patent: 2742815 (1956-04-01), Dietrich et al.
patent: 2804800 (1957-09-01), Stevens
patent: 2853920 (1958-03-01), Malfeld et al.
patent: 5402192 (1995-03-01), Gelman
patent: 5402193 (1995-03-01), Choate
patent: 5619031 (1997-04-01), Choate
patent: 5668665 (1997-09-01), Choate

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