Ehrke, H.-J.H.-J.EhrkeKuhlow, B.B.KuhlowRosin, T.T.RosinSinnig, T.T.SinnigTepe, R.R.TepeTroller, G.G.Troller2022-03-022022-03-021985https://publica.fraunhofer.de/handle/publica/173195Describes an improved light-valve system for color picture projection. An increased resolution is achieved by using finer carrier gratings regarding the deformation behaviour of the control layer. The efficiency of the light-valve is amended by applying cylindric lenses for illumination and use of interference filter stripes in the dark-filter system. In addition a new projection lamp with increased electro-optic efficiency is used. The concept for a projector with HDTV-capability is presented, whereby the total light output is 1600 lm by using a 400 W lamp.decolour televisioncolour television receiverselectro-optical deviceslampslensesoptical filtersoptical projectorstelevision systemsHDTV1600 lmlight output400 wlamplight-valve systemcolor picture projectionfiner carrier gratingsdeformation behaviourcontrol layercylindric lensesilluminationinterference filter stripesdark-filter systemelectro-optic efficiency621journal article