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Dual wavelength negative imaging DLP-SLA system

Patent ·
OSTI ID:1840486

The present disclosure relates to a digital light projector (DLP) system which has first and second light sources. The first optical source may generate a first beam at a first wavelength which causes polymerization of a photopolymerizable resist. The second optical source may generate a second beam at a second wavelength different from the first wavelength, and where the second beam inhibits polymerization of the photopolymerizable resist. A digital micromirror device (DMD) is included which has a plurality of micromirrors and is configured to be illuminated by the first and second beams and to generate a pattern on the micromirrors which has light from the first and second light wavelengths controlled by the micromirror position. The first light image causes polymerization of a first portion of the photopolymerizable resist, while the second image inhibits polymerization of a second portion of the photopolymerizable resist.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
11,130,288
Application Number:
16/020,529
OSTI ID:
1840486
Country of Publication:
United States
Language:
English

References (12)

Super-resolution nanolithography in photoreduction polymers
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conference August 2011
New photoresists for super-resolution photo-inhibition nanofabrication
  • Cao, Yaoyu; Gan, Zongsong; Jia, Baohua
  • 2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian Conference on Optics, Lasers and Spectroscopy and the Australian Conference on Optical Fibre Technology https://doi.org/10.1109/IQEC-CLEO.2011.6194019
conference August 2011
Photopolymer Materials and Processes for Advanced Technologies journal November 2013
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On Stereolithography journal September 2012
A review of the issues surrounding three-dimensional computed tomography for medical modelling using rapid prototyping techniques journal February 2010
Two-color photo-initiation/inhibition lithography conference February 2010
Two-Wavelength, Photo-Initiation and Photo-Inhibition Competing for Selective Photo-Patterning of Hydrogel Porous Microstructures journal May 2018
Stereolithographic models derived from X-ray computed tomography - Reproduction accuracy journal August 1997
Medical Rapid Prototyping Technologies: State of the Art and Current Limitations for Application in Oral and Maxillofacial Surgery journal July 2005
3-D Printing the History of Mechanisms journal October 2004
Dynamic modeling of superresolution photoinduced-inhibition nanolithography journal July 2012

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