SYSTEM AND METHOD FOR COMPUTED AXIAL LITHOGRAPHY (CAL) FOR 3D ADDITIVE MANUFACTURING

Title:

SYSTEM AND METHOD FOR COMPUTED AXIAL LITHOGRAPHY (CAL) FOR 3D ADDITIVE MANUFACTURING

Document Type and Number:

WIPO Patent Application WO/2018/208378

Kind Code:

A3

Abstract:

A method of forming a three dimensional (3D) object is disclosed. The method may involve providing a volume of photo-curable resin contained within an optically transparent resin container, and simultaneously directing optical projections from an optical subsystem at a plurality of angles θ through the volume of photo-curable resin. The optical beams are directed about a z axis extending through the volume of photo-curable resin. Each of the projections is provided with a calculated 2D spatial intensity function which creates a 3D intensity map. The projections act over a fixed temporal exposure period, during which the net exposure dose is sufficient to cure select portions of the volume of photo-curable resin, and to leave other portions uncured, to form a desired 3D part.

Inventors:

KELLY BRETT (US)
PANAS ROBERT (US)
SHUSTEFF MAXIM (US)
SPADACCINI CHRISTOPHER (US)
TAYLOR HAYDEN (US)
BHATTACHARYA INDRASEN (US)

Application Number:

PCT/US2018/024475

Publication Date:

December 13, 2018

Filing Date:

March 27, 2018

Export Citation:

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Assignee:

L LIVERMORE NAT SECURITY LLC (US)

International Classes:

B29C64/106; B29C64/264; B29C64/393; B33Y30/00; B33Y40/00; B33Y50/02

Domestic Patent References:

WO2016023133A1	2016-02-18
WO2016209654A1	2016-12-29

Foreign References:

US20100029801A1	2010-02-04
US8579620B2	2013-11-12
US20100321478A1	2010-12-23
US20160182782A1	2016-06-23

Other References: