| 摘要 |
Digital video projection device comprising a light source ( 3 ) to produce an image building light beam ( 7 ), one or more lenses ( 4 ), a light valve ( 5 ) and a colour wheel ( 6 ), characterized in that means are provided for altering the relative position of the colour wheel ( 6 ) in view of the path of said light beam ( 7 ), between at least a first position wherein the colour wheel ( 6 ) interferes with the image building light beam ( 7 ) and a second position wherein it does not interfere with said light beam ( 7 ), such that the device can be switched between two operation modes, in particular a video mode wherein the colour wheel ( 6 ) is positioned in the path of said light beam ( 7 ) and a light mode, wherein the colour wheel is positioned in the second position and does not interfere with said light beam ( 7 ).
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