Method and apparatus for establishing an alignment grid or patte

Details Method and apparatus for establishing an alignment grid or patte Method and apparatus for establishing an alignment grid or patte

1995-09-07

1996-10-01

Dowling, William C.

Optics: image projectors

Projected image combined with real object

353 62, G03B 2100

Patent

active

055606962

ABSTRACT:
A light board includes a translucent support defining a support surface thereon, and an alignment pattern generator is located adjacent the support for establishing an alignment pattern. The alignment pattern generator includes a number of light-emitting elements. A photo duplicating device may be provided for duplicating a layout aligned on the alignment patter. The light board may be incorporated into a "photocopy machine." The light board may likewise be used as a light table, and the like.

REFERENCES:
patent: 3323415 (1967-06-01), Tobias
patent: 3749485 (1973-07-01), Carter et al.
patent: 3807846 (1974-04-01), Swank
patent: 4739487 (1988-04-01), Bonnet et al.
patent: 4910541 (1990-03-01), Morgan
patent: 5153386 (1992-10-01), Siefer et al.
patent: 5477283 (1995-12-01), Casey

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