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US 12,006,251 B2Granted
Micro-optical element having high bonding strength between glass substrate and micro-structure layer
AssigneeSCHOTT Glass Technologies (Suzhou) Co. Ltd.
InventorsHuiyan Fan, Yanquan Shan, Guangjun Zhang, Weizhi Deng
Life of this patent
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Abstract
A micro-optical element is provided that includes a glass substrate, a microstructure layer, and a bonding strength between the glass substrate and microstructure layer. The glass substrate has a thickness of less than or equal to 1500 μm and exhibits a glue contact angle of less than 45°. The microstructure layer is formed from polymer imprinted on the glass substrate. The bonding strength is larger than 0.5 MPa.
Claims24
A micro-optical element comprising:
- a glass substrate;
- a microstructure layer of polymer imprinted on the glass substrate;
- and
- a bonding strength between the microstructure layer and the glass substrate that is higher than 0.5 MPa,
- wherein the glass substrate has a thickness less than or equal to 1500 μm, a Total Thickness Variation (TTV) less than or equal to 40 μm, and a thickness tolerance of less than or equal to 80 μm.
2 more elements
A method for manufacturing a micro-optical element, comprising:
- providing a glass substrate with a thickness less than or equal to 1500 μm, a Total Thickness Variation (TTV) less than or equal to 40 μm, and a thickness tolerance of less than or equal to 80 μm;
- and
- applying a microstructured polymer layer to the glass substrate to form a microstructure layer such that a bonding strength between the microstructure layer and the glass substrate is higher than 0.5 MPa.
Dependencies are inferred from the claim text.