In 1957, he created the Calypso-Phot for Jacques-Yves Cousteau under their Louisiana Spirotechnique company name. lieutenant was later licensed to Nikon, where it became the Nikonos, (for a period sold in Europe as the Calypso-Nikkor). De Wouters apparently worked in aviation earlier in life, possibly during World World War II, since he holds several patents for airplane improvements dating to that time period.
He died in Rome in 1973.