Method and apparatus for producing three-dimensional objects

Details Method and apparatus for producing three-dimensional objects Method and apparatus for producing three-dimensional objects

1990-03-12

1992-09-29

Arnold, Bruce Y.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359900, 365119, 264 22, G02B 2608, G11C 1300, B29C 3508

Patent

active

051518139

ABSTRACT:
A three-dimensional object producing method, and the apparatus for carrying it out, of the type in which a beam is irradiated on a liquid surface of a liquid photo-curable resin to form a succession of cured resin layers corresponding to successive cross-sectional laminae of the three-dimensional object and step-wise moving the cured resin layers as they are formed to build up a three-dimensional copy of object, wherein the improvement of the method comprises vector-scanning the beam on a first layer of photo-curable resin along one or more paths corresponding to the contour or contours of a first one of the cross-sectional laminae of the object, thereafter, raster-scanning the beam on one or more layers of photo-curable resin which are subsequent to the first layer of photo-curable resin, and alternating repeating these different scanning steps until a complete copy of the object is thereby produced.

REFERENCES:
patent: 4041476 (1977-08-01), Swainson
patent: 4575330 (1986-03-01), Hull
patent: 4961154 (1990-10-01), Pomerantz et al.
patent: 5009585 (1991-04-01), Hirano et al.
patent: 5011635 (1991-04-01), Murphy et al.
patent: 5015424 (1991-05-01), Smalley

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