Half mirror and image display apparatus

摘要

There is provided an image display apparatus which enables an image displayed on a display device to be viewed through a half mirror. The half mirror includes two translucent resin substrates formed from resin, a metallic film composed Ag and disposed between the resin substrates, and dielectric films disposed between the metallic film and the resin substrates, respectively. Each of the dielectric films includes an SiO2 layer provided on the corresponding one of the substrates, an Al2O3 layer provided on the SiO2 layer, and a ZrO2 layer provided on the Al2O3 layer.

主权项

1. An image display apparatus comprising:
a display device that displays an image; and a half mirror, the half mirror comprising:
a first resin substrate and a second resin substrate formed from translucent resin;a metallic film at least containing Ag and disposed between the first resin substrate and the second resin substrate; anda first dielectric film disposed between the metallic film and the first resin substrate, whereinthe first dielectric film includes a first high-refractive-index layer and a first block layer,the first high-refractive-index layer is composed of ZrO2 and configured so as to contact the metallic film,the first block layer is disposed between the first high-refractive-index layer and the first resin substrate,the first block layer is composed of an Al2O3 layer,the Al2O3 layer of the first block layer has a thickness of not less than 5 nm,the first dielectric film has a thickness ranging from 200 nm to 1 μm, andthe half mirror transmits external light and reflects the image displayed on the display device to show the external light and the image combined with each other.