公开(公告)号：US5066525A

公开(公告)日：1991-11-19

申请号：US466852

申请日：1990-01-18

申请人： Fumihiko Nakamachi ,  Masanori Umebayashi

发明人： Fumihiko Nakamachi ,  Masanori Umebayashi

IPC分类号： B44F1/02 ,  G02B27/00 ,  G02B27/01 ,  G03H1/02

CPC分类号： B32B17/10761 ,  B32B17/10036 ,  B44F1/02 ,  G02B27/0103 ,  G03H1/0252 ,  G02B2027/0116 ,  G02B2027/0118 ,  G02B2027/012 ,  G03H2001/186 ,  G03H2001/2231 ,  G03H2250/37 ,  G03H2250/39 ,  Y10T428/24355 ,  Y10T428/31507 ,  Y10T428/3163 ,  Y10T428/31721 ,  Y10T428/31725 ,  Y10T428/31786 ,  Y10T428/31855 ,  Y10T428/31859

摘要： The invention relates to a laminated glass panel incorporating therein a hologram sheet. For example, the laminated glass panel is a vehicle windshield in which the hologram sheet is used as a combiner of a head-up display. As adhesive means, the laminated glass panel uses either one sheet or two sheets of polyvinyl butyral resin (PVB) film. In the former case the hologram sheet is interposed between the PVB film and one of the glass plate and shielded from the PVB film by a transparent resin or glass film which prevents the plasticizer contained in the PVB film from transferring to the hologram sheet. In the latter case the hologram sheet is interposed between the two sheets of PBB film and shielded from each PVB film by a transparent resin or glass film having the aforementioned property. By virtue of the shielding of the hologram sheet from the PVB film, the diffraction wavelength of the hologram sheet does not significantly shift from the aimed wavelength. To prevent blurring of the holographic images, it is preferable that each transparent film for the shielding purpose has a very smooth surface at least on the side facing the PVB film.

摘要翻译： 本发明涉及一种其中结合有全息图片的夹层玻璃面板。 例如，夹层玻璃面板是将全息图用作平视显示器的组合器的车辆挡风玻璃。 作为粘合剂，夹层玻璃板使用一片或两片聚乙烯醇缩丁醛树脂（PVB）膜。 在前一种情况下，全息图片介于PVB膜和玻璃板中的一个之间，并通过透明树脂或玻璃膜与PVB膜隔离，防止PVB膜中包含的增塑剂转移到全息图片上。 在后一种情况下，全息图片介于两张PBB薄膜之间，并通过具有上述特性的透明树脂或玻璃膜从每个PVB薄膜屏蔽。 通过全息图片从PVB膜的屏蔽，全息图的衍射波长与目标波长没有显着的偏移。 为了防止全息图像的模糊，优选的是，用于屏蔽目的的每个透明膜至少在面向PVB膜的一侧上具有非常光滑的表面。