Forming method of a pvb film for hud

Patent metadata

Field	Value
Publication number	US-2025033250-A1
Application number	US-202418914796-A
Country	US
Kind code	A1
Filing date	Oct 14, 2024
Priority date	Dec 29, 2016
Publication date	Jan 30, 2025
Grant date	—

Abstract

A PVB film for HUD, wherein an accuracy error of HUD imaging achievable by the PVB film is ±0.1 mrad, wherein a cross section of the PVB film in one direction is wedged, and a cross section of the PVB film in another direction is curved.

First claim

1 . A PVB film for HUD, wherein an accuracy error of HUD imaging achievable by the PVB film is ±0.1 mrad, wherein a cross section of the PVB film in one direction is wedged, and a cross section of the PVB film in another direction is curved.

2 . The PVB film for HUD according to claim 1 , wherein the one direction and the other direction are perpendicular to each other.

3 . The PVB film for HUD according to claim 1 , wherein cross sections of the PVB film in two directions are both curved.

4 . The PVB film for HUD according to claim 3 , wherein the two directions are perpendicular to each other.

5 . The PVB film for HUD according to claim 3 , wherein curved surfaces can compensate imaging accuracy based on a curved surface of a glass used by HUD imaging.

6 . A PVB film for HUD, wherein an accuracy error of HUD imaging achievable by the PVB film is ±0.1 mrad,
wherein a cross section of the PVB film in one direction is wedged, and a cross section of the PVB film in another direction is curved, and
wherein the PVB film is formed by a forming mold comprising an upper mold and a lower mold, the two of which can form an enclosed mold cavity when clamped together, wherein protective films are disposed on inner surfaces of the upper mold and the lower mold, respectively, for supporting PVB material and preventing the PVB material from bonding with the upper mold and the lower mold, and wherein shapes of the protective films match shapes of the upper mold and the lower mold,
wherein the forming mold is a thermal-press forming mold that receives a PVB film therein as forming material to manufacture a formed PVB film for HUD imaging,
wherein (a) a cross section of the mold cavity in one direction is wedged and a cross section of the mold cavity in another direction perpendicular to said one direction is curved such that the formed PVB film by the forming mold has a thickness that varies along said one direction and along said other direction, or (b) cross sections of the mold cavity in two directions, which are perpendicular to each other, are both curved such that the formed PVB film by the forming mold has a thickness that varies along each of said two directions, and
wherein curved surfaces can compensate imaging accuracy based on a curved surface of a glass used by HUD imaging.

Assignees

• Saint Gobain

Inventors

• Guo Xiaofeng

Classifications

• B29C59/02

  by mechanical means, e.g. pressing {(B29C59/007 takes precedence; embossing expanded porous articles B29C44/5627)} · CPC title

• B32B17/10935

  as a preformed layer, e.g. formed by extrusion · CPC title

• B29C2043/366

  plates pressurized by an actuator, e.g. ram drive, screw, vulcanizing presses · CPC title

• B32B2605/006

  Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings · CPC title

• B32B17/10889

  shaping the sheets, e.g. by using a mould (B32B17/10816 takes precedence) · CPC title