Patent ID: 6957006
Filing Date: 2005-10-18
Classification: G02B

Abstract:
1. An optical element made of transparent material with a high refractive index comprising: a light incoming surface, a light outgoing surface that is not parallel with the light incoming surface, a pair of planes that are facing each other, and a curved light path converting surface, wherein the pair of planes is formed nearly perpendicular to the light incoming surface and the light outgoing surface, the distance between the pair of planes of the optical element becomes smaller gradually from the light incoming surface toward the light outgoing surface, the curved light path converting surface is formed nearly perpendicular to the pair of planes, and the shape thereof is defined so as to reflect and converge light coming from the light incoming surface, the light coming in from the light incoming surface goes toward the light path converting surface, and via a light path for the light to be reflected and converged on the light path converting surface and go out from the light outgoing surface, and when the light path is projected onto a plane parallel to the planes, the light is reflected substantially only on the light path converting surface.