Information recording medium and its production method, and optical information recording reproducing apparatus
US7313080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2003 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Feb 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/24324
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording medium has a recording portion where three-dimensional information can be recorded. The recording portion includes at least one particle-containing layer (recording layer or a recording auxiliary layer) containing particles absorbing at least a part of light having a predetermined wavelength and substantially transparent to a recording light and a reproducing light having a wavelength longer than the predetermined wavelength and a particle holding material substantially transparent to the recording and reproducing lights. The mean particle size of the particles is preferably shorter than the wavelengths of the recording and reproducing lights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.