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US 11,307,494 B2Granted
Hologram medium and optical element
AssigneeLG Chem, Ltd.
InventorsHeon Kim, Seokhoon Jang, Se Hyun Kwon, Yeongrae Chang, Jinseok Byun
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Abstract
The present disclosure relates to a hologram medium comprising: a polymer substrate including a polymer resin in which a silane-based functional group is located in a main chain or a branched chain, wherein a fine pattern is formed on at least one surface of the polymer substrate, and an optical element.
Claims17
A hologram medium comprising:
- a polymer substrate having a fine holographic relief pattern formed on at least one surface,
- wherein the polymer substrate comprises a cross-linked product between (1) a polymer matrix including a (meth)acrylate-based (co)polymer having a silane-based functional group in a branched chain and a silane crosslinking agent;
- and (2) a photoreactive monomer, and
- wherein the silane crosslinking agent includes a linear polyether main chain having a weight average molecular weight of 100 to 2000 and a silane functional group bonded to a terminal or branched chain of the main chain.
1 more element
Dependencies are inferred from the claim text.