# US 12,759,268 B2 · Laminated glazing having holographic film laminated therein > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,759,268 B2 - Document ID: US12759268B2 - Status: Granted - Kind: B2 - Application number: 17/638,932 - Filed: 2020-08-28 - Published: 2022-09-15 - Granted: 2026-10-13 - Earliest claimed: 2019-08-30 - Assignees: Arc II Glass America Inc. - Applicants: Acr II Glass America Inc. - Inventors: Markus Walter Pohlen; Steven Scott Christman; Emily Anne Curtis; Yu Matsuda - Web page: https://patentgrep.com/patent/US12759268B2 ## CPC - B32B 17/10431: {Specific parts for the modulation of light incorporated into the laminated safety glass or glazing} - B32B 17/10036: {comprising two outer glass sheets} - B32B 17/10706: {being photo-polymerized} - B32B 2307/40: having particular optical properties - B32B 2307/732: Dimensional properties - B32B 2605/006: Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings - B60J 1/001: {Double glazing for vehicles} - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05) ## Abstract A laminated glazing is disclosed. Among other things, the laminated glazing includes a first glass sheet; a first interlayer; a photopolymer film; a second interlayer; and a second glass sheet, wherein the total thickness of the second glass sheet and the second interlayer is from 0.5 mm to 2.5 mm. ## Claims ### Claim 1 A laminated glazing, comprising: a first glass sheet; a first interlayer; a photopolymer film, the photopolymer film comprising a volume hologram; a second interlayer; and a second glass sheet, wherein a total thickness of the second glass sheet and the second interlayer is from 0.5 mm to 2.5 mm, and wherein the first glass sheet and the second glass sheet are the only glass components of the laminated glazing and each of the first interlayer, the photopolymer film, and the second interlayer are disposed between the first glass sheet and the second glass sheet. ### Claim 2 (depends on 1) The laminated glazing according to claim 1, wherein the total thickness of the second glass sheet and the second interlayer is from 0.7 mm to 2.0 mm. ### Claim 3 (depends on 1) The laminated glazing according to claim 1, wherein the thickness of the second glass sheet is from 1.0 mm to 1.6 mm. ### Claim 4 (depends on 3) The laminated glazing according to claim 3, wherein the thickness of the second glass sheet is from 1.1 mm to 1.4 mm. ### Claim 5 (depends on 1) The laminated glazing according to claim 1, wherein the thickness of the second interlayer is from 0.001 to 0.3 mm. ### Claim 6 (depends on 1) The laminated glazing according to claim 1, wherein a thickness of the first glass sheet is different from that of the second glass sheet. ### Claim 7 (depends on 6) The laminated glazing according to claim 6, wherein the first glass sheet is thicker than the second glass sheet. ### Claim 8 (depends on 7) The laminated glazing according to claim 7, wherein the second glass sheet has a concave surface and wherein the second glass sheet is configured to face a vehicle interior while installed in a vehicle. ### Claim 9 (depends on 1) The laminated glazing according to claim 1, wherein the second interlayer is formed on the photopolymer film or the second glass sheet. ### Claim 10 (depends on 1) The laminated glazing according to claim 1, wherein the laminated glazing comprises an automotive glazing. ### Claim 11 A method for preparing a glazing, comprising: laminating a first glass sheet, a first interlayer, a photopolymer film, a second interlayer, and a second glass sheet to provide a laminated glazing, the photopolymer film comprising a material configured to record a volume hologram; and applying a reactive light to the photopolymer film through a master holographic film, wherein the reactive light transmits through the master holographic film, the second glass sheet, and the second interlayer and records a volume hologram in the photopolymer film; wherein the first glass sheet and the second glass sheet are the only glass components of the laminated glazing and each of the first interlayer, the photopolymer film, and the second interlayer are disposed between the first glass sheet and the second glass sheet. ### Claim 12 (depends on 11) The method according to claim 11, wherein the total thickness of the second glass sheet and the second interlayer is from 0.7 mm to 1.8 mm. ### Claim 13 (depends on 12) The method according to claim 12, wherein the total thickness of the second glass sheet and the second interlayer is from 1.0 mm to 1.6 mm. ### Claim 14 (depends on 11) The method according to claim 11, wherein the thickness of the second glass sheet is from 1.0 mm to 1.6 mm. ### Claim 15 (depends on 14) The method according to claim 14, wherein the thickness of the second glass sheet is from 1.1 mm to 1.4 mm. ### Claim 16 (depends on 11) The method according to claim 11, wherein the thickness of the second interlayer is from 0.001 to 0.3 mm. ### Claim 17 (depends on 11) The method according to claim 11, wherein a thickness of the first glass sheet is different from that of the second glass sheet. ### Claim 18 (depends on 17) The method according to claim 17, wherein the thickness of the first glass sheet is greater than that of the second glass sheet. ### Claim 19 (depends on 11) The method according to claim 11, wherein the second interlayer is formed on the photopolymer film or the second glass sheet. ### Claim 20 (depends on 19) The method according to claim 19, wherein the second interlayer has a thickness from 1 to 100 μm.