Methods and apparatus for tomographic additive manufacturing with a spatially coherent light source
AssigneeEcole Polytechnique Federale De Lausanne (Epfl)
InventorsPaul Delrot, Damien Loterie, Christophe Moser
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Abstract
A method of fabricating a three-dimensional article comprises providing a spatially coherent light source (101, 201), generating from the light source (101, 201), patterns of light based on computed tomographic projections of the three-dimensional article, and projecting the patterns of light into a photoresponsive medium. The projecting is configured to define a three-dimensional dose distribution, thereby locally altering the phase of the photoresponsive medium and creating the article.
Claims8
A method of fabricating a three-dimensional article with volumetric additive manufacturing by computed projections, sad method comprising:
- providing a spatially coherent light source, wherein a beam-parameter product of the light source is less than 400 μm*rad or its etendue is lower than 0.16 mm2,
- generating from said light source, patterns of light based on computed projections of said three-dimensional article, and
- projecting said patterns of light into a photoresponsive medium, whereby the projecting is configured to define a three-dimensional dose distribution, thereby locally altering the phase of the photoresponsive medium and creating the article.
Dependencies are inferred from the claim text.