Patent ID: 8917962

Claim:
A method of manufacturing a lightguide and light input coupler comprising a light transmitting film with a lightguide region continuously coupled to each coupling lightguide in an array of coupling lightguides, the array of coupling lightguides comprising a first linear fold region and a second linear fold region, said method comprising the steps of: a. increasing a distance between the first linear fold region and the second linear fold region of the array of coupling lightguides coupled to the lightguide region in a direction perpendicular to a light transmitting film surface at the first linear fold region; b. decreasing the distance between the first linear fold region and the second linear fold region of the array of coupling lightguides in a direction substantially perpendicular to the first linear fold region and parallel to the light transmitting film surface at the first linear fold region; c. increasing the distance between the first linear fold region and the second linear fold region of the array of coupling lightguides in a direction substantially parallel to the first linear fold region and parallel to the light transmitting film surface at the first linear fold region; and d. decreasing the distance between the first linear fold region and the second linear fold region of the array of coupling lightguides in a direction perpendicular to the light transmitting film surface at the first linear fold region such that the array of coupling lightguides are bent, disposed substantially one above another, and aligned substantially parallel to each other.