DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: System and method for computed axial lithography (CAL) for 3D additive manufacturing

Abstract

In one aspect the present disclosure relates to a system for forming a three dimensional (3D) object from a volume of photo-responsive material contained within a material container. A plurality of optical projection subsystems are adapted to be arranged circumferentially around a material container containing the volume of photo-responsive material, and are controlled by a controller. The optical projection subsystems direct optical projections at a plurality of angles θ through the volume of photo-responsive material. The optical projections are further directed about a z axis extending through the volume of photo-responsive material. The plurality of optical subsystems are further controlled by the controller to provide each of the optical projections with a calculated three-dimensional intensity distribution acting over a fixed temporal exposure period, which is sufficient to at least one of cure or remove selected portions of the volume of photo-responsive material, and leave other portions unmodified, to form a desired 3D part.

Inventors:
; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of California, Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1893069
Patent Number(s):
11370173
Application Number:
16/691,053
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA); The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 11/21/2019
Country of Publication:
United States
Language:
English

Citation Formats

Kelly, Brett, Panas, Robert M., Shusteff, Maxim, Spadaccini, Christopher, Taylor, Hayden, and Bhattacharya, Indrasen. System and method for computed axial lithography (CAL) for 3D additive manufacturing. United States: N. p., 2022. Web.
Kelly, Brett, Panas, Robert M., Shusteff, Maxim, Spadaccini, Christopher, Taylor, Hayden, & Bhattacharya, Indrasen. System and method for computed axial lithography (CAL) for 3D additive manufacturing. United States.
Kelly, Brett, Panas, Robert M., Shusteff, Maxim, Spadaccini, Christopher, Taylor, Hayden, and Bhattacharya, Indrasen. Tue . "System and method for computed axial lithography (CAL) for 3D additive manufacturing". United States. https://www.osti.gov/servlets/purl/1893069.
@article{osti_1893069,
title = {System and method for computed axial lithography (CAL) for 3D additive manufacturing},
author = {Kelly, Brett and Panas, Robert M. and Shusteff, Maxim and Spadaccini, Christopher and Taylor, Hayden and Bhattacharya, Indrasen},
abstractNote = {In one aspect the present disclosure relates to a system for forming a three dimensional (3D) object from a volume of photo-responsive material contained within a material container. A plurality of optical projection subsystems are adapted to be arranged circumferentially around a material container containing the volume of photo-responsive material, and are controlled by a controller. The optical projection subsystems direct optical projections at a plurality of angles θ through the volume of photo-responsive material. The optical projections are further directed about a z axis extending through the volume of photo-responsive material. The plurality of optical subsystems are further controlled by the controller to provide each of the optical projections with a calculated three-dimensional intensity distribution acting over a fixed temporal exposure period, which is sufficient to at least one of cure or remove selected portions of the volume of photo-responsive material, and leave other portions unmodified, to form a desired 3D part.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {6}
}

Works referenced in this record:

High Resolution Projection Micro Stereolithography System And Method
patent-application, October 2015


High Efficiency Optical Combiner for Multiple Non-Coherent Light Sources
patent-application, June 2016


Methods of image reconstruction from projections applied to conformation radiotherapy
journal, October 1990


Optical Illumination System
patent-application, February 2016


Power-efficient steerable displays
patent-application, August 2015


System and method for writing an article of manufacture into bulk material
patent-application, September 2016


Ultralight Metallic Microlattices
journal, November 2011


Method and apparatus for producing a stepless 3-dimensional object by stereolithography
patent, June 1993


Three dimensional (3D) printer with near instantaneous object printing using a photo-curing liquid
patent-application, April 2016


Spatio-Temporal Light Field Cameras
patent-application, June 2016


Modeling of Oxygen-Inhibited Free Radical Photopolymerization in a PDMS Microfluidic Device
journal, November 2008


Three-dimensional modeling apparatus, object, and method of manufacturing an object
patent-application, February 2012


Three Dimensional Printing Apparatus
patent-application, October 2015


Microdroplet-based 3-D Volumetric Displays Utilizing Emitted And Moving Droplet Projection Screens
patent-application, December 2010


Apparatus for Fabrication of Three Dimensional Objects
patent-application, November 2014


Continuous liquid interface production of 3D objects
journal, March 2015


Near-eye light field displays
journal, November 2013


Numerical Transforms
journal, May 1990


Light-Curing Slips for the Stereolithographic Preparation of Dental Ceramics
patent-application, February 2010


Optical apparatus including a liquid crystal modulator
patent, March 1996


Stereolithographic method and apparatus in which a membrane separates phases
patent, April 1991


Three Dimensional (3D) Printing by Volumetric Addition Through Selective Curing of a Fluid Matrix
patent-application, March 2016