Patent ID: 8729804

Claim:
A switching module capable of adjusting a visual angle, the switching module comprising: an edge-type optical substrate having an emitting surface; a light source disposed by a side of the edge-type optical substrate and on a bottom of the side of the edge-type optical substrate, the light source comprising a plurality of light units, each light unit emitting a beam to the edge-type optical substrate according to a predetermined angle; an optical modulating component disposed between the light source and the edge-type optical substrate, the optical modulating component modulating divergence of the beam emitted from each light unit, so that the beam is guided out of the edge-type optical substrate via the emitting surface according to the predetermined angle; and an optical coupling component disposed on the other side of the edge-type optical substrate opposite to the light source, the beam emitted from the light source being guided into the edge-type optical substrate via the optical modulating component and the optical coupling component, the optical coupling component guiding the beam emitted from the light source into the edge-type optical substrate via the other side of the edge-type optical substrate in a reverse turning method.