Patent ID: 8545084
Filing Date: 2013-10-01
Classification: G02B,Y10T

Abstract:
1. A light guide comprising: a front surface, a rear surface, and at least one edge separating the front and rear surfaces; a first light introduction position on one of the at least one edge; a second light introduction position on at least one edge and spaced away from the first light introduction position; a plurality of geometric light redirectors formed therein on one of the front surface and the rear surface of the light guide, wherein: a front face of each geometric light redirector intersects with the one of the front surface and the rear surface along an intersection line; the plurality of geometric light redirectors are configured to redirect light from at least one of the first and second light introduction positions toward the front surface; the plurality of geometric light redirectors include a first group of geometric light redirectors, the intersection line of each geometric light redirector of the first group of light redirectors being substantially perpendicular to a line connecting a midpoint of the intersection line with the first light introduction position; the plurality of geometric light redirectors include a second group of geometric light redirectors, the intersection line of each geometric light redirector of the second group of light redirectors being substantially perpendicular to a line connecting a midpoint of the intersection line with the second light introduction position; and a first region of the light guide wherein the geometric light redirectors associated with the first group and the geometric light redirectors associated with the second group are intermixed such that a line connecting a midpoint of the intersection line of at least one geometric light redirector of the first group with the first light introduction position intersects a line connecting a midpoint of the intersection line of at least one geometric light redirector of the second group with the second light introduction position.