The WHD(3.5:1) lens is developed for those applications which require both 16:9 and 4:3 projection on the same screen, particular useful in cinema front projection applications.

　　The WHD(3.5:1) lens transforms the original 4:3 picture on the LCD panels into a 16:9 format on the screen. Meanwhile there is still sufficient resolution for 4:3 projection of standard video or data projection.