Laminat, Optisches Element und Optische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4782512

Anmeldetag

29. Juli 2024

Veröffentlichung

3. April 2025

Rechtsraum

EP

Abstract

A laminate includes a void-containing layer, and a pressure-sensitive adhesive/adhesive layer directly laminated on one surface or both surfaces of the void-containing layer. The pressure-sensitive adhesive/adhesive layer 12 is formed from a pressure-sensitive adhesive/adhesive including a (meth)acrylic polymer and an organic silyl group-containing compound. An organic silyl group of the organic silyl group-containing compound may or may not necessarily include a carbon-silicon bond. An increase rate of a refractive index of the void-containing layer before and after a heat durability test of holding at a temperature of 65°C and a relative humidity of 95% for 500 hours satisfies the following formula (1):(|n - n<0>| / n<0>) × 100 < 3.0 (1). In the formula (1), n represents the refractive index of the void-containing layer after the heat durability test, and n<0> represents the refractive index of the void-containing layer before the heat durability test.

Anmelder

Firma

Nitto Denko Corporation

Land

🇯🇵 Japan