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US 2025/0353947 A1Published application
Hologram recording medium, preparation method thereof and optical element comprising the same
AssigneeLG Chem, Ltd.
InventorsMin Soo KIM, Yongjoon HEO, Hanna LEE, Soonhwa JUNG, Chulsuk HONG
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Abstract
The present disclosure relates to a hologram recording medium, a preparation method thereof, and an optical element including the same. The hologram recording medium can have excellent optical recording characteristics and low haze by controlling an element ratio of fluorine on the surface of the photopolymer layer to a specific range, and can provide an optical element with excellent visibility.
Claims19
A hologram recording medium comprising:
- a photopolymer layer which includes a polymer matrix formed by crosslinking a siloxane-based polymer containing a silane functional group and an acrylic-based polyol;
- a photoreactive monomer and a photoinitiator system or a photopolymer obtained therefrom;
- and a fluorinated compound,
- wherein based on the total amount of carbon, oxygen, fluorine and silicon atoms on a surface of the photopolymer layer as confirmed by Electron Spectroscopy for Chemical Analysis, an element ratio of the fluorine is 0.05 to 3 atomic %.
1 more element
A method for preparing a hologram recording medium, comprising the steps of:
- applying a photopolymer composition to form a photopolymer layer, wherein the photopolymer composition comprises a polymer matrix formed by crosslinking a siloxane-based polymer containing a silane functional group and an acrylic-based polyol, or a precursor thereof;
- a fluorinated compound;
- a photoreactive monomer;
- and a photoinitiator system;
- and
- irradiating a coherent laser onto a predetermined region of the photopolymer layer and selectively polymerizing the photoreactive monomer contained in the photopolymer layer to record optical information,
- wherein based on the total amount of carbon, oxygen, fluorine and silicon atoms on a surface of the photopolymer layer as confirmed by Electron Spectroscopy for Chemical Analysis, an element ratio of the fluorine is 0.05 to 3 atomic %.
4 more elements
Dependencies are inferred from the claim text.