Adjustable light field configuration of the backlight module

The present invention provides an adjustable backlight module structure of the light field, comprising a light source device, an optical structure layer, a first prism sheet and the second prism sheet. The light source device having a light emitting surface, and having a surface normal direction. An optical structure layer disposed above the surface and having a plurality of projections to the surface of the microstructure, wherein the micro structures will produce a light guide surface offset from the normal direction. A first prism sheet disposed on the side facing away from the layer structure of the optical light source device and having a first plurality of prisms extending along a first direction, wherein the plurality of first prism and the light leaving the cross-sectional structure of the optical layer in a first direction perpendicular to converged toward the normal direction.