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1. (IN588/CHENP/2008) OPTICAL PICK-UP AND/OR RECORDING DEVICE

Office : India
Application Number: 588/CHENP/2008 Application Date: 04.02.2008
Publication Number: 588/CHENP/2008 Publication Date: 28.11.2008
Publication Kind : A
Prior PCT appl.: Application Number:PCTIB2006052159 ; Publication Number: Click to see the data
IPC:
G11B /
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
Applicants: KONINKLIJKE PHILIPS ELECTRONICS N. V
Inventors: ZIJP, FERRY
VERSCHUREN, COEN, A
Priority Data: 05106048.1 04.07.2005 EP
Title: (EN) OPTICAL PICK-UP AND/OR RECORDING DEVICE
Abstract:
(EN) For optical data storage applications a near field optical system can be used. In near field optical systems an accurate alignment of a solid immersion lens with respect to a disc surface is crucial. The correction of a tilt between the lens and the disc is performed by use of auxiliary beams. By comparing the gap signal for the auxiliary beams the air gap height and disc tilt can be determined.(Fig. 1)
Also published as:
KR1020080033347EP1905024JP2009500776US20080165632CN101218641MYPI 20063164
WO/2007/004141