FIELD: information technology.
SUBSTANCE: apparatus has a radiation source with two different wavelengths which is optically interfaced with a focusing system fitted with positioning apparatus, and a photodetector which is optically interfaced with the focusing system through a spectrum divider. The apparatus also has a controlled spectrum selector, with the required intensity ratios of light beams of each of the two wavelengths established at the output of the spectrum selector, and the focusing system has coordinate chromatism at the said wavelengths.
EFFECT: reduced cross coupling effect of photochromic layers of the multilayer optical disc when recording information and low probability of losing recorded information when reading.
5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| APPARATUS FOR RECORDING/READING INFORMATION IN MULTILAYER OPTICAL DISC | 2009 |
|
RU2414012C1 |
| MULTILAYER OPTICAL DISC | 2009 |
|
RU2405219C1 |
| METHOD OF RECORDING LATENT IMAGE | 2017 |
|
RU2699031C2 |
| OPTICAL HEAD TO WRITE ON OPTICAL DISK AND/OR READING OFF FROM OPTICAL DISK PHASE-ONLY SYNTHETIC HOLOGRAM TO BE USED IN SAID OPTICAL HEAD | 2006 |
|
RU2429550C2 |
| METHOD AND DEVICE FOR READING DATA FROM A GLASS CARRIER | 2019 |
|
RU2710388C1 |
| 0 |
|
SU516989A1 | |
| OPTICAL RECORD MEDIUM AND METHOD FOR DATA READING OFF OPTICAL RECORD MEDIUM | 2001 |
|
RU2195026C1 |
| ASSOCIATIVE FREQUENCY-SELECTIVE OPTICAL STORAGE DEVICE | 1990 |
|
SU1812887A1 |
| SOLID-STATE UPCONVERSION LASER | 2012 |
|
RU2497249C1 |
| CATADIOPTRIC LENS ( VARIANTS ) | 2002 |
|
RU2212695C1 |
