Invention Grant
- Patent Title: Optically enhanced patternable photosensitivity via oxygen excitation
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Application No.: US15277645Application Date: 2016-09-27
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Publication No.: US10668708B2Publication Date: 2020-06-02
- Inventor: Ryan Hensleigh , Eric Duoss
- Applicant: Lawrence Livermore National Security, LLC
- Applicant Address: US CA Livermore
- Assignee: Lawrence Livermore National Security, LLC
- Current Assignee: Lawrence Livermore National Security, LLC
- Current Assignee Address: US CA Livermore
- Agency: Harness, Dickey & Pierce, PLC
- Main IPC: B29C64/264
- IPC: B29C64/264 ; B33Y50/02 ; B33Y10/00 ; B33Y30/00 ; B29C64/386 ; B29C64/20 ; B29C64/135 ; B29C64/124

Abstract:
A method is disclosed for performing a three dimensional (3D) printing process. The method involves generating a primary light beam having a wavelength sufficient to initiate polymerization of a photoresin, and patterning the primary light beam into a patterned primary beam. The patterned primary beam may be directed toward an ultraviolet (UV) or visible light sensitive photoresin to initiate polymerization of select areas of the photoresin. The photoresin may be illuminated with a secondary light beam having a wavelength of about 765 nm to stimulate triplet oxygen into singlet oxygen, to thus control oxygen inhibition in additional areas bordering the select areas, to control polymerization inhibition in the additional areas bordering the select areas.
Public/Granted literature
- US20180086007A1 OPTICALLY ENHANCED PATTERNABLE PHOTOSENSITIVITY VIA OXYGEN EXCITATION Public/Granted day:2018-03-29
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