Patent ID: 6685792
Filing Date: 2004-02-03
Classification: G02B,Y10S,Y10T

Abstract:
A method of making an optical panel, comprising:individually coating a plurality of sheets in a substance having an index of refraction lower than that of the sheets; stacking the plurality of coated sheets, wherein each coated sheet is fastened to an adjoining coated sheet using an adhesive; applying pressure to the stack; curing the adhesive; cutting the stack to form an outlet face body having a first wedge shape with an outlet face thereon; repeating said individually coating, said stacking, said applying, and said curing to form a second stack; cutting the second stack to form an inlet face body having a second wedge shape with an inlet face thereon, the inlet face being smaller in surface area than the outlet face in each of two dimensions; and joining together the inlet face body and the outlet face body at a light redirection element, wherein the outlet face is disposed askew from the inlet face, for redirecting light incident into the inlet face body to a direction incident into the outlet face body. 2.The method of claim 1, wherein said stacking is repeated until between about 500 and about 800 sheets have been stacked.