Back to results
US 4,792,474 AGranted
Optical memory element
AssigneeSharp Kabushiki Kaisha
InventorsYoshiteru Murakami, Akira Takahashi, Yoshikazu Fujii, Hiroyuki Katayama, Kenji Ohta
Life of this patent
Estimating the term…
Abstract
An optical memory element comprises a substrate, a recording medium layer and an aluminum silicon nitride film laminated in this order.
Claims12
An optical memory element comprising:
- a substrate;
- a recording medium layer;
- and
- a dielectric layer made of an aluminum silicon nitride film.
1 more element
An optical memory element comprising:
- a substrate;
- a first dielectric layer;
- a recording medium layer;
- and
- a second dielectric layer, wherein at least one of the first and second dielectric layers is an aluminum silicon nitride film.
2 more elements
An optical memory element having a high recording sensitivity and a lower heat energy loss which comprises as a layered construction:
- a transparent substrate made of glass,
- a polycarbonate or an acrylic material,
- a first transparent dielectric layer formed on the transparent substrate,
- a rare earth transition metal alloy thin film formed as a recording medium on the first transparent dielectric layer,
- a second transparent dielectric layer formed on the rare earth transition metal alloy thin film, and
- a reflective layer formed on the second transparent dielectric layer, at least one of said first and second transparent dielectric layers being an aluminum silicon nitride film.
3 more elements
Dependencies are inferred from the claim text.