University of California

Lawrence Livermore National Security, LLC

Hossein Heidari

Maxim Shusteff

Hayden Kingsley Taylor

Christopher M Spadaccini

Robert Matthew Panas

James S Oakdale

Brett Kelly

Kyle Champley

Indrasen Bhattacharya

Erika Jo Fong

Chi Chung Li

Trevor Rongey, Jr

Sui Man Luk

Samira Feili

Joseph Toombs

Heting Fu

A system for determining a light intensity field for use in manufacturing a 3D object from a volume of material. The system receives a 3D specification of a 3D geometry for the 3D object that specifies voxels within the volume that contain material that is to be part of the 3D object. The system employs a cost function for effectiveness of a light intensity field in manufacturing the 3D object. The cost function may be an adjoint of an Attenuated Radon Transform that models an energy dose that each voxel would receive during manufacture of the 3D object using the light intensity field. The system applies an optimization technique that employs the cost function to generate a measure of the effectiveness of possible light intensity fields and outputs an indication of a light intensity field that will be effective in manufacturing the 3D object.

Computed axial lithography optimization system

Methods and materials for volumetric additive manufacturing, including computed axial lithography ('CAL'), using photosensitive resins comprising a photocurable resin prepolymer; a photoinitiator; and (optionally) a curing inhibitor. In various embodiments, such photosensitive polymers comprise (a) one or more monomer (or prepolymer) molecules, which form the backbone of the polymer network of the polymeric material and define its architecture; and (b) a photoinitiator that captures illumination energy and initiates polymerization.

Photocurable resins for volumetric additive manufacturing

Growing community of inventors

Berkeley, CA, United States of America

Hossein Heidari