Popis: |
Holographic optical elements (HOEs) are very interesting optical devices based on the holography technique and have been spotlighted in the augmented reality (AR) application recently. The HOEs have optically see-through property due to their high angular-selectivity, which has an extensive potential to be employed as an image combiner for the AR devices. Various optical functions, such as reflection, lens and diffusing, can be implemented with thin-layer HOEs. This advantage can replace the conventional bulky optics with HOEs for a compact form factor. In addition, multi-functionality can be realized with multiplexed recording, and optical mass production is possible, which is especially useful for AR display systems. |