| 摘要 |
PURPOSE:To permit observation of a hologram from different angles by forming a relief hologram image part on one face of a transparent plastic substrate, providing a partially vapor deposited metallic layer thereon and coating the image part inclusive of said layer with a vapor deposited metal compd. layer. CONSTITUTION:The relief hologram image part 2 having a fine rugged pattern group of 1-2mum in pitch and 0.1-0.3mum in embossing depth is formed on one face of the transparent plastic substrate 1 consisting of a polystyrene resin or polycarbonate resin. The metallic layer 3 consisting of aluminum, chromium or the like is deposited by evaporation on the image part 2 while said layer is positioned at the center thereof and is adjusted to 100-2,000Angstrom film thickness. The metal compd. layer 4 which extends on the layer 2, has both functions to transmit and reflect light and consists of titanium oxide, silicon oxide, zinc oxide, etc., is deposited by evaporation on the end part inclusive of the above- mentioned metallic layer at the thickness adjusted to 100-5,000Angstrom . The entire surface is protected with a synthetic resin film if necessary. Then, the feel of the images are different between the layers 3 and 4 and, therefore, the observation from the different angles is possible.
|
