Ambient lighting for an image projector

A system is provided with the following. Means PL;MI which projects picture optical beam ILB on projection field PA for a display of picture PI on projection field PA, It is means 1 for generating the Ambient optical beam, Ambient light source LS;LS1 which generates the Ambient light, LS2, Ambient optical beam ALB;ALB1, and ALB2 are supplied. Means 1 to have Ambient optical beam ALB;ALB1, reflector RF;RF1 which reflect ALB2, and RF2 toward projection field PA so that collimator CO [which receives the Ambient light], or optical guide LG1, LG2, and the Ambient light field ALI that adjoined picture PI may be obtained.