US Patent 7997746 Arrangement for generating dual images

An arrangement and method for displaying at least a first and a second image. The arrangement comprises at least one light source (120, 121, 220, 221, 320, 321) adapted to generate light having at least a first and a second light characteristic; and at least a first and a second image forming element (122, 123, 222, 223, 322, 323) arranged to display a first and a second image (128, 129, 230, 231), respectively. The first image forming element (122, 222, 322) is at least responsive to the light having the first light characteristic. The second image forming element (123, 223, 323) is at least responsive to the light having the second light characteristic.