Projection display apparatus

摘要

A projection display apparatus having three projection tubes for the projection of images of different primary colors wherein the images from the projection tubes are projected on an enlarged scale onto a screen through projection lenses. The display apparatus includes a first deflection unit having at least a first deflection coil mounted on a neck portion of a first projection tube, a second deflection unit having at least a second deflection coil mounted on a neck portion of a second projection tube and a third deflection unit having at least a third deflection coil mounted on a neck portion of a third projection tube. According to a feature of the display apparatus, a first linearity correction coil is coupled in series with a parallel connection of the second deflection unit and only one of the first and third deflection units.