Schematic illustration of achromatic metalenses for AR/VR displays based on three-dimensional nanofabrication. (IMAGE)

Pohang University of Science & Technology (POSTECH)

Schematic illustration of achromatic metalenses for AR/VR displays based on three-dimensional nanofabrication.

Caption

Top: Conceptual illustration of the fabrication of a three-dimensional achromatic metalens using two-photon lithography and its application to an OLED near-eye display. The fabricated metalens is integrated with an OLED display to form a sharp full-color image at the retinal plane.

Bottom: Fabrication of a three-dimensional achromatic metalens using a printable grayscale EBL-based nano-template and demonstration of full-color OLED near-eye display imaging. After fabricating a height-encoded nano-template, the three-dimensional metalens is repeatedly replicated using resin and integrated with an OLED display to achieve chromatic-aberration-corrected full-color imaging. Compared with a chromatic metalens, the achromatic metalens reconstructs RGB images more clearly at a single focal plane.

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POSTECH

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