| abstract |
A display apparatus includes: a spectacle type frame mounted on a head portion of an observer; and an image display apparatus installed in the frame. The image display apparatus includes an image forming device, and an optical device allowing light output from the image forming device to be incident thereon, to be guided therein, and to be output therefrom. A dimmer which adjusts the amount of external light incident from the outside is disposed in an area of the optical device where the light is output. The dimmer includes a first transparent substrate and a second transparent substrate facing the first substrate, first and second electrodes which are mounted on the first and second substrates, respectively, and an electrolyte sealed between the first and second substrates and containing metal ions. The first electrode includes a conductive material of a fine line shape. The second electrode includes a transparent electrode layer. |