| 摘要 |
An apparatus (figure 1) and the method (figure 5) for rapid prototyping of a three-dimensional objet which includes a radiant energy source (12) of a wide beam of radiant energy of suitable intensity and wavelength for curing a layer of photo-curable resin (16) contained in an open vat, a spatial light modulator (SLM) (11) having an array of pixel elements (13) which are individually digitally controllable by a computer (10) for modulating the radiant energy beam projected from the radiant energy source on a pixel by pixel basis, to form a series of time sequential images of the cross-sectional laminate of the object, an optical system for focusing each image formed by the SLM (11), one at a time, onto successive layers of photo-curable resin for predetermined exposure times to thereby form stacked laminate of cured resin, each lamina of cured resin being in the shape of a different one of the cross-sectional laminae, and a piston support for lowering each lamina of cured resin after it is formed by the SLM and for depositing a layer of resin corresponding to the thickness of one cross-sectional lamina of the three-dimensional object before the step of projecting a new image by the SLM. The SLM, the piston support for lowering, and the optical system operate repeatedly and sequentially until a complete copy of the object is thereby produced. |
