Method and apparatus for 3D printing using controlled UV laser-assisted polymerization

A method for forming a three-dimensional object, the method comprising the steps of:

• a. providing a UV-sensitive liquid resin within a transparent container;
• b. irradiating said UV-sensitive liquid resin with at least one beam of UV light from at least one UV laser to induce polymerization and form the three-dimensional object;
• c. controlling the operation of the at least one UV laser by independently adjusting locations of the at least one UV laser, movements of the at least one UV laser, intensities, and angles of incidence of the beam or beams emitted by said at least one UV laser within the UV-sensitive liquid resin;
• d. chilling the UV-sensitive liquid resin to prevent premature polymerization before the UV light penetrates deeper into the UV-sensitive liquid resin;
• and
• e. wherein the irradiating step includes using the at least one UV laser emitting light within a wavelength range of 200 to 450 nm, and further wherein the controlling the operation step includes controlling a precession maneuver, wherein controlling the laser's position and precession of the emitted laser beam such that the precession maneuver orients the beam to continuously pass through a single point.