Laminat, Optisches Element und Optische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4729294

Anmeldetag

13. Mai 2024

Veröffentlichung

2. Januar 2025

Rechtsraum

EP

Abstract

Provided is a laminate having a low refractive index and high mechanical strength. A laminate (10) of the present disclosure includes a void-containing layer (11) and a pressure-sensitive adhesive/adhesive layer (12). The pressure-sensitive adhesive/adhesive layer (12) is directly laminated on one surface or both surfaces of the void-containing layer (11). A refractive index of the void-containing layer (11) measured in a state of the laminate (10) is 1.30 or less. Nanoindentation harness measured by pushing an indenter of a nano indenter into the pressure-sensitive adhesive/adhesive layer (12) for 2000 nm is 0.5 MPa or more. Peel strength of interlayer between the void-containing layer (11) and the pressure-sensitive adhesive/adhesive layer (12) measured by a tensile testing machine at a tensile speed of 0.3 m/min is 3 N/25 mm or more.

Anmelder

Firma

Nitto Denko Corporation

Land

🇯🇵 Japan