Optics: image projectors – Stencil or perforated plate projector
Patent
1994-08-15
1995-12-19
Cuchlinski, Jr., William A.
Optics: image projectors
Stencil or perforated plate projector
353 12, G03B 2100
Patent
active
054772834
ABSTRACT:
An optical projecting device accurately aligns figures, letters and symbols using images, and grid lines projected on a work area during such tasks as graphic design layout. Prior art solutions to the problem of eliminating penciled guide lines to improve such graphic design layout involve the projection of reference lines. But one drawback is that there is no provision for moving, repositioning, or partially rotating, the images and reference lines relative to the work piece during the design layout operation. Another is that they include no provision for changing the image sizes when required during the progress of the work. A different technology as well as different illumination precepts overcome prior art drawbacks. The unit is the type which includes a housing, a light source within the housing, and an image bearing transparent panel. But the transparent panel is carried in a retainer adapted to be rotated. In addition swivel and pivotal means are provided for raising, lowering and moving the projecting unit.
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Cuchlinski Jr. William A.
Dowling William C.
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