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US 2025/0013197 A1Published application
Holographic recording medium, composition for forming photopolymer layer and optical element
AssigneeLG Chem, Ltd.
InventorsYeonhui YI, Hanna LEE, Min Soo KIM, Inkyu LEE, Chulsuk HONG, Soonhwa JUNG
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Abstract
The present invention relates to a holographic recording media wherein an adhesive force between the photopolymer layer and the adhesive protective layer before light irradiation is 500 to 5,000 gf/20 nm, and a haze value of the photopolymer layer is 3% or less, and an optical element including the holographic recording medium.
Claims13
A holographic recording media comprising a substratesubstrate;
- an adhesive protective layer;
- and a photopolymer layer,
- wherein an adhesive force between the photopolymer layer and the adhesive protective layer before light irradiation is 500 to 5,000 gf/20 nm, and
- wherein a haze value of the photopolymer layer measured in accordance with JIS K7136:2000 is 3% or less.
1 more element
A photopolymer composition for hologram formation comprising a polymer matrix or a precursor thereof;
- a photoreactive monomer including a monofunctional monomer and a polyfunctional monomer;
- an adhesive additive;
- and a photoinitiator,
- wherein a ratio of the monofunctional monomer among the photoreactive monomers is more than 40% by weight and 70% by weight or less.
1 more element
Dependencies are inferred from the claim text.