FIELD: information technologies.
SUBSTANCE: device comprises a lens of spherical aberration correction, having one surface shaped with a larger curvature compared to the other surface; and a sliding part that slides along a guide element. The protruding part of the sliding part is configured so that it is installed within the limits of the side surface of the reflective surface of the upward reflecting mirror, and a part of the spherical aberration correction lens protruding away from a lens holder, is applied onto the reflective surface of the upward reflecting mirror, when the lens of the spherical aberration correction is approaching the upward reflecting mirror as close as possible.
EFFECT: reduced dimensions of the device and increased range of spherical aberration correction.
15 cl, 8 dwg
Title | Year | Author | Number |
---|---|---|---|
OPTICAL FOCUSING SYSTEM, OPTICAL HEAD DEVICE, AS WELL AS OPTICAL RECORDING AND PLAYBACK DEVICE IN WHICH SAID OPTICAL FOCUSING SYSTEM IS USED | 2005 |
|
RU2379769C2 |
OPTICAL HEAD UNIT AND OPTICAL DISC DEVICE | 2005 |
|
RU2399964C2 |
OPTICAL HEAD DEVICE AND DIFFRACTION ELEMENT, OPTICAL DATA DEVICE, COMPUTER, DISC PLAYER, AUTOMOBILE NAVIGATION SYSTEM, OPTICAL DISC RECORDING DEVICE AND VEHICLE | 2007 |
|
RU2437173C2 |
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 |
CATADIOPTRIC OPTICAL SYSTEM, FOR OPTICAL REPRODUCING HEAD AND OPTICAL-DISK MEMORY; OPTICAL DISK | 1998 |
|
RU2169400C2 |
OPTICAL SCANNING UNIT | 1986 |
|
RU2037860C1 |
OPTICAL SCANNING DEVICE AND OPTICAL PLAYER, CONTAINING SAID OPTICAL SCANNING DEVICE | 2001 |
|
RU2271579C2 |
OPTICAL SCANNING DEVICE AND IMAGE FORMATION DEVICE USING SUCH ANALYSER | 2008 |
|
RU2392648C1 |
OPTICAL READER (DESIGN VERSIONS) | 1996 |
|
RU2140672C1 |
DATA STORAGE DEVICE MANUFACTURING PROCESS (ALTERNATIVES) | 1996 |
|
RU2188464C2 |
Authors
Dates
2011-09-10—Published
2007-01-23—Filed