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公开(公告)号：EP4421552A1
公开(公告)日：2024-08-28
申请号：EP21965006.6
申请日：2021-11-23
发明人： TSO, Fai , HE, Lishan , ZENG, Dong , HUANG, Fengzhu , CHEN, Guofu , LU, Guoshui , LIN, Gaoqiang , FUKUHARA, Kohta
摘要： A head-up display (HUD) window includes a window glass and a projector (1). The window glass includes a glass layer (2) and a transparent nano coating (3). The transparent nano coating (3) is disposed on the glass layer (2). The projector (1) is configured to generate and project a projection light ray onto the window glass to form a projection image. A proportion of P-polarized light in the projection light ray is greater than or equal to 70%. The transparent nano coating (3) is capable of reflecting at least part of the P-polarized light incident. The window glass has a reflectivity for the P-polarized light greater than or equal to 5%. The window glass has a visible light transmittance greater than or equal to 70%. The window glass has a total solar energy transmittance less than or equal to 50%. The window glass in the disclosure has a good thermal insulation effect, thereby satisfying the usage requirements of thermal comfort.
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公开(公告)号：EP4266112A1
公开(公告)日：2023-10-25
申请号：EP21934552.7
申请日：2021-11-05
发明人： TSO, Fai , HE, Lishan , ZENG, Dong , ZHANG, Xiaorong , HUANG, Fengzhu , CHEN, Guofu , FUKUHARA, Kohta
摘要： This disclosure relates to the field of a Head up display system technology, and more particularly to a Head up display system for image display with a transparent nano film, and the disclosure specifically provides a Head up display system capable of eliminating deficiencies of Head up display images such as being reddish or yellowish. The Head up display system includes a projection light source, laminated glass, and a transparent nano film. The transparent nano film includes at least one laminated structure consisting of a high refractive-index layer/a low refractive-index layer, where the high refractive-index layer/the low refractive-index layer is deposited sequentially outwards from the surface of the inner glass pane. The projection light source is configured to generate P-polarized light. A ratio of near-red light reflectivity R1 at wavelengths ranging from 580 nm to 680 nm of the laminated glass with the transparent nano film to near-blue light reflectivity R2 at wavelengths ranging from 420 nm to 470 nm of the laminated glass with the transparent nano film is R1/R2=1.0~2.0. In the disclosure, deficiencies of Head up display images such as being reddish or yellowish can be eliminated, to generate the Head up display images in neutral color, and thus the Head up display images can be more colorful to implement full-color display. Furthermore, full-color display can also be implemented at a lower cost, thereby reducing a cost of a selected projection light source.
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公开(公告)号：EP4206792A1
公开(公告)日：2023-07-05
申请号：EP22787589.5
申请日：2022-04-14
发明人： TSO, Fai , HE, Lishan , HUANG, Fengzhu , ZHU, Rui , LU, Guoshui , FUKUHARA, Kohta
IPC分类号： G02B27/01
摘要： This disclosure relates to the field of head-up display (HUD) technology, and more particularly to an HUD system with a transparent nano film for image display. Specifically, an HUD system including ultra-thin glass is provided in the disclosure. The HUD system includes a projection light source, and laminated glass, and a transparent nano film. The transparent nano film includes at least two metal layers. The projection light source is configured to generate P-polarized light. The laminated glass provided with the transparent nano film has a maximum reflectivity Rmax and a minimum reflectivity Rmin for the P-polarized light that has the incident angle ranging from 45° to 72°, where Rmax/Rmin ranges from 1.0 to 2.0. In the disclosure, a clear HUD image without visual ghosting can be generated, so that requirements of high reflectivity for P-polarized light, high transmittance for visible light, and low reflectivity for visible light of the fourth surface may be satisfied, thereby rendering an HUD image in neutral color, and enriching the color of the HUD image to achieve full-color display.
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公开(公告)号：EP4446796A1
公开(公告)日：2024-10-16
申请号：EP23740116.1
申请日：2023-01-17
发明人： TSO, Fai , HE, Lishan , HUANG, Fengzhu , ZENG, Dong , CHEN, Guofu , ZHANG, Xiaorong , FUKUHARA, Kohta
IPC分类号： G02B27/01 , C03C27/12 , C03C17/34 , C03C17/36 , B32B7/023 , B32B17/10 , B32B27/42 , B32B33/00
摘要： Provided in the embodiments of the present disclosure are a laminated glass and a head-up display system. The laminated glass includes: an inner glass plate, an interlayer film and an outer glass plate, in which a side of the inner glass plate away from the interlayer film is provided with a first transparent nano-coating for reflecting P-polarized light, the first transparent nano-coating includes at least one stacked structure composed of a high-refractive-index material layer and a low-refractive-index material layer which are sequentially deposited outwards from a surface of the inner glass plate, a second transparent nano-coating includes dielectric layers and electrically conductive layers, and each of the electrically conductive layers is sandwiched between two of the dielectric layers; the high-refractive-index material layer has a refractive index greater than or equal to 1.9, the low-refractive-index material layer has a refractive index less than or equal to 1.8, and the laminated glass has a P-polarized light reflectivity greater than or equal to 16% at an incident angle of 65°. The present disclosure can improve both the P-polarized light reflectivity of the laminated glass and the smoothness of a P-polarized light reflection spectrum of the laminated glass, and can improve a brightness and a display comfort of a head-up display system using the laminated glass.
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公开(公告)号：EP4325272A1
公开(公告)日：2024-02-21
申请号：EP22900494.0
申请日：2022-11-30
发明人： TSO, Fai , HE, Lishan , HUANG, Fengzhu , ZENG, Dong , ZHU, Rui , CHEN, Jianping , FUKUHARA, Kohta
IPC分类号： G02B27/01
摘要： The present application relates to a head-up display system. The head-up display system includes a laminated glass and a projection device. The laminated glass includes an outer glass sheet, a thermoplastic interlayer and an inner glass sheet. The laminated glass includes a first head-up display region and a second head-up display region. The projection device can generate first polarized light and second polarized light. At least about 70% of the first polarized light is p-polarized light, and at least about 70% of the second polarized light is p-polarized light.
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公开(公告)号：EP4265411A8
公开(公告)日：2023-12-13
申请号：EP22871077.8
申请日：2022-05-19
发明人： TSO, Fai , HUANG, Fengzhu , ZENG, Dong , LIN, Shituan , ZHANG, Xiaorong , FUKUHARA, Kohta
摘要： Head-up display (HUD) glass and a head-up display system are provided in the disclosure. The Head-up display glass includes an outer surface and an inner surface opposite to the outer surface. A transparent nanofilm used for reflecting P-polarized light is disposed on the inner surface, and the transparent nanofilm includes a first high-refractive-index-layer, a second high-refractive-index-layer, a first low-refractive-index-layer, a third high-refractive-index-layer, and a second low-refractive-index-layer which are sequentially stacked on the inner surface. A refractive index of each of the first high-refractive-index-layer, the second high-refractive-index-layer, and the third high-refractive-index-layer is greater than 1.8, and a refractive index of each of the first low-refractive-index-layer and the second low-refractive-index-layer is less than or equal to 1.8. The technical solutions of the disclosure can solve the problem that a HUD image presented by the traditional head-up display glass is not clear, so that a driver or passenger can see a clearer HUD image, improving visual comfort and user experience.
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