WProjector
W3LCD
WBioscop
WBrenkert Brenograph Jr.
WCinemeccanica
WCRT projector
WDigital Light Processing
WEidophor
WHandheld projector
WKeystone effect
WLCD projector
WMotiograph
WMovie projector
WOpaque projector
WOverhead projector
WPhantoscope
WPolylux (overhead projector)
WOptical comparator
WProjector camera systems
WTalaria projector
WTheatrograph
WVideo projector
WVitascope