METHOD FOR PRODUCING HOLOGRAPHIC OPTICAL ELEMENT, AND DISPLAY DEVICE INCLUDING HOLOGRAPHIC OPTICAL ELEMENT PRODUCED BY THAT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a holographic optical element not causing fringes.SOLUTION: A method for producing a holographic optical element comprises: providing a recording stack comprising at least one recording element laminated on at least one supporting element; irradiating at least a part of the recording stack with at least one recording beam while the recording stack bends; providing a bending deviation threshold ξfor the recording stack; and adjusting at least one first process parameter such that an expected maximum bending deviation ξof the recording stack does not exceed the bending deviation threshold. During the irradiating step, the at least one first process parameter influences the bending behavior of the recording stack.SELECTED DRAWING: Figure 5