Title: System and method for curved light sheet projection during two-photon polymerization

Abstract

A laser-based manufacturing system is disclosed for fabricating non-planar three-dimensional layers. The system may have a laser for producing a laser beam with a plurality of optical wavelengths. An optically dispersive element may be used for receiving the laser beam and splitting the beam into a plurality of distinct beam components, wherein each beam component has spatially separated optical spectral components. A phase mask may be used which is configured to receive at least one of the beam components emerging from the dispersive element and to create a modified beam. One or more focusing elements may then be used to receive the modified beam emerging from the phase mask and to focus the modified beam into a non-planar light sheet for use in fabricating a part.

Inventors:

Saha, Sourabh Kumar; Chen, Shih-Chi; Chang, Yina

Issue Date:

2021-10-19

Research Org.:

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1859971

Patent Number(s):

11150484

Application Number:

15/983,872

Assignee:

Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

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B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

B23K26/06 - Shaping the laser beam, e.g. by masks or multi-focusing
B23K26/067 - Dividing the beam into multiple beams, e.g. multifocusing
B23K26/073 - Shaping the laser spot
B23K26/355 - {Texturing}

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C64/135 - the energy source being concentrated, e.g. scanning lasers or focused light sources
B29C64/268 - using laser beams
B29C64/286 - Optical filters, e.g. masks

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

B33Y10/00 - Processes of additive manufacturing
B33Y30/00 - Apparatus for additive manufacturing

G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

G02B21/086 - {for transillumination only}
G02B26/0833 - {the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
G02B27/106 - {for splitting or combining a plurality of identical beams or images, e.g. image replication}
G02B27/14 - operating by reflection only

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DOE Contract Number:  

AC52-07NA27344

Resource Type:

Patent

Resource Relation:

Patent File Date: 05/18/2018

Country of Publication:

United States

Language:

English