Head-Up Display System
Patent No. EP4325272 (titled "Head-Up Display System") was filed by Fuyao Glass Industry Group on Nov 30, 2022. The application was issued on Oct 1, 2025.
Patent Summary
A head-up display (HUD) system comprises a projection device and laminated glass consisting of an outer glass sheet, an inner glass sheet, and a bonded thermoplastic interlayer. The glass features a first HUD region with $\ge$60% visible light transmittance and a second HUD region with $\le$30% visible light transmittance. The projection device generates first and second polarized lights, both $\ge$70% p-polarized. The first light incidents the first region at 45°–70°, where the region has $\ge$15% reflectance to p-polarized light at 65°. The second light incidents the second region at 60°–85°, where the region has $\ge$10% reflectance to p-polarized light at 65°. Reflective coatings may be transparent nanofilms, potentially utilizing a $\ge$4.5nm acid/alkali-resistant compound outermost layer to prevent red/yellowish discoloration.
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Date
Description
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EP4325272
- Application Number
- EP22900494A
- Filing Date
- Nov 30, 2022
- Status
- Granted And Under Opposition
- Aug 29, 2025
- Publication Date
- Oct 1, 2025
- External Links
- Slate, Register , Google Patents