TRANSPARENT WOOD SURFACE IMPRINTING OPTICAL DEVICE AND APPLICATION THEREOF
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United States of America
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Issued Date -
Nov 21, 2024
app pub date -
Aug 17, 2023
filing date -
Aug 17, 2023
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Abstract
A transparent wood surface imprinting optical device is provided. A preparation method for the device includes cleaning and drying surfaces of transparent wood, spin-coating polymethyl methacrylate (PMMA) on a substrate of the transparent wood to obtain a PMMA layer, and spin-coating an ultraviolet (UV) glue on the PMMA layer to obtain a UV glue layer; placing the transparent wood on a silicon wafer, attaching a transparent grating array imprinting template on the UV glue layer, exposing the UV glue layer, and removing the transparent grating array imprinting after the exposing, thereby to obtain a grating-structure-based transparent wood; and replacing the grating structure imprinting template by a lattice structure imprinting template to prepare lattice-structure-based transparent wood. The diffraction efficiency of the grating structure and the lattice structure on the transparent wood are greater and more stable than those of PMMA substrates.
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