| 摘要 |
<p>PURPOSE:To form a hologram element that can obtain a bright reproduced image with low voltage by laminating plural crystal provided with transparent electrodes on both sides. CONSTITUTION:Transparent electrodes 2, 2 having lambda0/4 optical film thickness (lambda0 is wavelength of light source) are formed by evaporating In2O3 etc., on both sides (110 face) of a crystal plate 1 (for example; single crystal plate of bismuth silicon oxide, single crystal plate of bismuth germanate) that has electro-optical effect and optical conductive effect. Next, plural above-mentioned crystal plates are laminated on (110) face to make a hologram element (3 is an electric power source). As voltage can be applied to the above-mentioned element dividing into (n) parts, the element can be driven by 1/n power voltage compared with conventional element.</p> |
