US 11,900,624 B2
Digital fringe projection and multi-spectral polarization imaging for rapid 3D reconstruction
Stanley Pau, Tucson, AZ (US); and Rongguang Liang, Tucson, AZ (US)
Assigned to Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
Filed by Arizona Board of Regents on Behalf of the University of Arizona, Tucson, AZ (US)
Filed on Mar. 13, 2023, as Appl. No. 18/183,005.
Application 18/183,005 is a division of application No. 16/770,793, granted, now 11,605,172, previously published as PCT/US2018/064478, filed on Dec. 7, 2018.
Claims priority of provisional application 62/596,589, filed on Dec. 8, 2017.
Prior Publication US 2023/0342959 A1, Oct. 26, 2023
Int. Cl. G06T 7/521 (2017.01); G01B 11/25 (2006.01); G06T 17/00 (2006.01)
CPC G06T 7/521 (2017.01) [G01B 11/25 (2013.01); G06T 17/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system for producing optical fringe patterns, comprising:
a first beam splitter configured to receive light from a light source;
a first spatial light modulator positioned to receive the light after reflection from the first beam splitter and to produce a first reflected light that is modulated in one or both of space and amplitude;
a second beam splitter configured to receive the first reflected light after traversal through the first beam splitter; and
a second spatial light modulator positioned to receive light after traversal through the first beam splitter and to produce a second reflected light that is modulated in one or both of space and amplitude, wherein the second beam splitter is configured to produce a set of fringe patterns, wherein each fringe pattern has a particular phase, polarization or intensity characteristic that is different from another one of the fringe patterns.