Method for producing a hologram on a curved substrate plate, resulting substrate plate with hologram and a laminate, in particular a vehicle windscreen, containing said substrate plate

• Main Authors: Pinsker, Martin, Solchenbach, Tobias
• Format: Patent
• Language: English
• Published: 18.03.2025
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHIC PROCESSES OR APPARATUS; HOLOGRAPHY; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method for producing a hologram on a curved substrate plate includes providing a curved substrate plate having a substrate surface, the actual geometry of which is subject to a tolerance deviation with respect to a predetermined desired geometry; providing an inflatable cushion with a cushion surface that can be deformed under the effect of pressure and is preformed into the predetermined desired geometry or with a predetermined deviation therefrom; applying a holographic master in the form of a flexible thin layer to the deformable cushion surface and applying a hologram-recording layer to the substrate surface; pressing or placing the holographic master onto the hologram-recording layer by way of the cushion surface deformed to the actual geometry, thereby achieving full surface-area contact between them with a substantially constant predetermined layer thickness of the hologram-recording layer, and exposing the hologram-recording layer to form a hologram.