Visual morphing using directionally selective microprisms

A method for providing information from images displayed in an electronic device, comprising the steps of:

• providing a mobile electronic device with a display consisting of a user's interface, a touch screen and a display screen;
• providing an optical waveguide comprising only a single layer substantially planar waveguide in the mobile electronic device;
• providing at least two different light sources in the mobile electronic device including a first light source for propagating light in a first direction defining a Y direction and a second light source for propagating light in a second direction defining a Z direction, said Y direction being at an angle of inclination to the Z direction;
• providing directional optical microprisms on the waveguide, said microprisms comprising
• a first array of microprisms comprising Y directional microprisms for emitting light only in the first direction defining a Y direction;
• a second array of microprisms comprising Z directional microprisms for emitting light only in the second direction defining a Z direction;
• and
• a third array of microprisms comprising YZ directional microprisms for emitting light in the first and second direction defining the Y and Z directions;
• propagating light in the first direction defining the Y direction from the first light source into the waveguide;
• emitting light from the first and third arrays of microprisms out of the waveguide in response to light propagating in the Y direction from the first light source;
• propagating light in the second direction defining the Z direction from the second light source into the waveguide;
• emitting light from the second and third arrays of microprisms out of the waveguide in response to light propagating in the Z direction from the second light source;
• displaying a first array of images on the display of the mobile electronic device in response to light emitted from the first and third arrays of microprisms when light is propagated in the Y direction from the first light source;
• and
• displaying a second array of images on the display of the mobile electronic device in response to light emitted from the second and third arrays of microprisms when light is propagated in the Z direction from the second light source.