Leica Geosystems used to sell phase-based scanners. These units were actually rebadged Zoller+Frohlich scanners. But the partnership ended a few years ago when

Leica Geosystems used to sell phase-based scanners. These units were actually rebadged Zoller+Frohlich scanners. But the partnership ended a few years ago when Leica introduced the Pxx series. Today the company only makes time-of-flight scanners. source: I work at Leica Geosystems.