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31. 发明专利

AU2003260860A8 Optical scanning device 未知
公开(公告)号：AU2003260860A8
公开(公告)日：2004-05-04
申请号：AU2003260860
申请日：2003-09-12
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： LIEDENBAUM COEN T H F , TUKKER TEUNIS W
IPC分类号： G11B7/00 , G11B7/005 , G11B7/135 , G11B7/125
摘要： An optical scanning device 1 detects an information signal from an optical record carrier 2 using differential interference contrast. Two radiation beams 13 a , 13 b are generated and focused to two distinct spots 15 a , 15 b respectively displaced along a data track on the information layer of an optical record carrier. The relative positions of the spots in lands and pits can generate a path length difference between the reflected beams 17 a , 17 b. This path length difference causes the beams to interfere either constructively or destructively, depending on the relative land/pit position in the data track of the spots. This interference causes a detectable signal to be generated, the signal being representative of a transition from a pit to a land on the information layer 4 or vice versa.

32. 发明专利

CA2488825A1 DUAL STACK OPTICAL DATA STORAGE MEDIUM AND USE OF SUCH MEDIUM 未知
公开(公告)号：CA2488825A1
公开(公告)日：2003-12-24
申请号：CA2488825
申请日：2003-06-11
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： TUKKER TEUNIS W , HELLMIG JOACHIM W , STALLINGA SJOERD , MIJIRITSKII ANDREI
IPC分类号： G11B7/24038 , G11B7/241 , G11B7/24
摘要： A dual-stack optical data storage medium (20) is described for read out usin g a focused radiation beam (29) with a wavelength of 400 - 410 nm and a Numerical Aperture (NA) of 0.84 - 0.86. The medium has a substrate (21) and a first stack of layers named L0 (22) comprising a first information layer and a second stack of layers named L1 (23), comprising a second information layer. A radiation beam (29) transparent spacer layer (24) is present between L0 and L1. A transmission stack named TS0 with a thickness dTS0 and an effective refractive index nTS0 contains all layers between L0 and an entrance face (2 6) of the medium (20). A transmission stack named TS1 with a thickness dTS1 and an effective refractive index nTS1 containing all layers between L1 and the entrance face (26). The spacer layer (24) has a thickness selected from the range 20 - 30 ~m, the thickness dTS0 in dependence on the refractive index nTS0 and the thickness dTS1 in dependence on the refractive index nTS0 are within a specified area. In this way a reliable read out of both the first a nd the second information layer of respectively L0 and L1 is achieved.

33. 发明专利

DE602005007627D1 未知
公开(公告)号：DE602005007627D1
公开(公告)日：2008-07-31
申请号：DE602005007627
申请日：2005-11-11
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： MIJIRITSKII ANDREI , STALLINGA SJOERD , HENDRIKS BERNARDUS H W , KUIPER STEIN , IMMINK ALBERT H , TUKKER TEUNIS W , LIEDENBAUM COEN T
IPC分类号： G02B15/00 , G11B7/135
摘要： In an optical scanning device (10) capable of scanning an information plane of an optical record carrier (5) of different types such as BD, DVD and CD, the diameter of the radiation spot on the detector (7) is dependent on the numerical aperture of the objective system (4) that is used for scanning the record carrier An optimal design of the optical detection system for scanning a BD, result in a small radiation spot for the other types such as DVD and CD. By implementing an optical element (13) that increases the diameter of the radiation spot in the situation a DVD or CD is scanned, the influence of stray light is reduced and the tracking signals are improved

34. 发明专利

DE602005006436D1 未知
公开(公告)号：DE602005006436D1
公开(公告)日：2008-06-12
申请号：DE602005006436
申请日：2005-12-15
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： TUKKER TEUNIS W , VREHEN JORIS J , HENDRIKS BERNARDUS H , KUIPER STEIN
IPC分类号： G02B3/02 , G02B3/12 , G11B7/135
摘要： An optical scanning device for scanning optical record carriers having cover layers of different thicknesses. The scanning device has a first mode for scanning a first optical record carrier, a second mode for scanning a second optical record carrier and a third mode for scanning third optical record carrier. The device comprises an objective lens system and a switchable optical element having a first discrete state and a different, second discrete state. The element comprises: a fluid system including a first fluid and a different, second fluid (19); a wavefront modifier (17); and a fluid system switch for acting on the fluid system to switch between the first and second discrete states of the element. When the element is in the first discrete state, the wavefront modifier (17) is substantially covered by the first fluid, and when the element is in the second discrete state, the wavefront modifier (17) is substantially covered by the second fluid (19). The wavefront modifier includes a non-periodic phase structure including a plurality of stepped annular zones separated by steps, the zones forming a non-periodic radial pattern, and is characterized in that the wavefront modifier further includes an aspherical surface. The scanning device is arranged to operate using the element in the second state to generate spherical aberration when in the second mode, the aspherical surface of the element in the second state compensating for more than half of the spherical aberration due to the objective lens system and second record carrier in combination.

35. 发明专利

DK1516323T3 未知
公开(公告)号：DK1516323T3
公开(公告)日：2007-05-14
申请号：DK03730434
申请日：2003-06-11
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： HELLMIG JOACHIM W , STALLINGA SJOERD , MIJIRITSKII ANDREI , TUKKER TEUNIS W
IPC分类号： G11B7/24038 , G11B7/241
摘要： A dual-stack optical data storage medium (20) is described for read out using a focused radiation beam (29) with a wavelength of 400 - 410 nm and a Numerical Aperture (NA) of 0.84 - 0.86. The medium has a substrate (21) and a first stack of layers named L0 (22) comprising a first information layer and a second stack of layers named L1 (23), comprising a second information layer. A radiation beam (29) transparent spacer layer (24) is present between L0 and L1. A transmission stack named TS0 with a thickness d TS0 and an effective refractive index n TS0 contains all layers between L0 and an entrance face (26) of the medium (20). A transmission stack named TS1 with a thickness d TS1 and an effective refractive index n TS1 containing all layers between L1 and the entrance face (26). The spacer layer (24) has a thickness selected from the range 20 - 30 µm, the thickness D TS0 in dependence on the refractive index n TS0 and the thickness D TS1 in dependence on the refractive index n TS0 are within a specified area. In this way a reliable read out of both the first and the second information layer of respectively L0 and L1 is achieved.

36. 发明专利

AT350749T 未知
公开(公告)号：AT350749T
公开(公告)日：2007-01-15
申请号：AT03730434
申请日：2003-06-11
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： HELLMIG JOACHIM W , MIJIRITSKII ANDREI , TUKKER TEUNIS W , STALLINGA SJOERD
IPC分类号： G11B7/24038 , G11B7/241 , G11B7/24
摘要： A dual-stack optical data storage medium (20) is described for read out using a focused radiation beam (29) with a wavelength of 400 - 410 nm and a Numerical Aperture (NA) of 0.84 - 0.86. The medium has a substrate (21) and a first stack of layers named L0 (22) comprising a first information layer and a second stack of layers named L1 (23), comprising a second information layer. A radiation beam (29) transparent spacer layer (24) is present between L0 and L1. A transmission stack named TS0 with a thickness d TS0 and an effective refractive index n TS0 contains all layers between L0 and an entrance face (26) of the medium (20). A transmission stack named TS1 with a thickness d TS1 and an effective refractive index n TS1 containing all layers between L1 and the entrance face (26). The spacer layer (24) has a thickness selected from the range 20 - 30 µm, the thickness D TS0 in dependence on the refractive index n TS0 and the thickness D TS1 in dependence on the refractive index n TS0 are within a specified area. In this way a reliable read out of both the first and the second information layer of respectively L0 and L1 is achieved.

37. 发明专利

AU2003259476A1 OPTICAL SCANNING DEVICE 未知
公开(公告)号：AU2003259476A1
公开(公告)日：2004-04-08
申请号：AU2003259476
申请日：2003-09-12
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： TUKKER TEUNIS W , HENDRIKS BERNARDUS H W , LIEDENBAUM COEN T H F , KUIPER STEIN
IPC分类号： G02B3/14 , G02B26/02 , G11B7/135 , G11B7/125
摘要： A optical scanning device ( 1 ) for scanning an information layer ( 2 ) with a radiation beam ( 25 ) in a writing mode and a reading mode comprises a radiation source ( 7 ) for emitting the beam and an objective lens ( 10 ) for converging the beam so as to form a scanning spot ( 19 ) in the information layer. The device also includes a scanning spot power switch ( 20 ) for switching the size of the cross-section of the beam between a first size at the writing mode and a second, larger size at the reading mode so as to switch the rim intensity of the beam between a first intensity level (Irim,writing) at the writing mode and a second, higher intensity level (Irim,reading) at the reading mode, thereby switching the light power of the scanning spot between a first power level (Pwriting) at the writing mode and a second, lower power level (Preading) at the reading mode.

38. 发明专利

AU2002351139A1 OPTICAL SCANNING DEVICE 未知
公开(公告)号：AU2002351139A1
公开(公告)日：2003-06-30
申请号：AU2002351139
申请日：2002-12-06
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： TUKKER TEUNIS W , HENDRIKS BERNARDUS H W
IPC分类号： G02B13/18 , G02B13/24 , G02B27/00 , G11B7/00 , G11B7/09 , G11B7/095 , G11B7/135 , G11B7/125
摘要： An optical scanning device is for scanning an information layer (2) with a radiation beam (4). It includes: a radiation source (6) for providing said radiation beam, a lens system (7) for transforming said radiation beam to a scanning spot (17) on said information layer, and a wavefront modifier arranged between said radiation source and said scanning spot. The modifier including two elements (301, 302) having each an aspheric surface (301b, 302a) and being mutually linearly movable for introducing a wave-front modification in said second radiation beam. According to the invention, the aspheric surfaces are shaped so that: a first mutual linear displacement of the elements (301, 302) introduces a first wavefront modification (Wa) along a first axis (XO) in said second radiation beam, and a second mutual linear displacement of the elements introduces a second wavefront modification (Wb) along said second axis (YO) in said second radiation beam.

39. 发明专利

AU2002348880A8 Field curvature reduction for optical system 未知
公开(公告)号：AU2002348880A8
公开(公告)日：2003-06-17
申请号：AU2002348880
申请日：2002-12-05
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： VRIES JORRIT E DE , HENDRIKS BERNARDUS H W , TUKKER TEUNIS W
IPC分类号： G02B5/00 , G02B5/18 , G02B27/00 , G11B7/00 , G11B7/135 , G11B7/14
摘要： An optical head ( 1 ) for scanning an optical record carrier ( 2 ) is provided with a compensator ( 16 ) for compensating the field curvature aberration of the objective system ( 18 ) caused by operation of the optical head at a different field angles. A surface of the compensator ( 16 ) comprises a phase structure in the form of annular areas ( 52, 53, 54, 55, 56 ), the areas forming a non-periodic pattern of optical paths of different lengths. The optical paths change as a function of field angle and form a field angle-dependent wavefront deviation that compensates field curvature of the optical head.

40. 发明专利

CY1107587T1 ΜΕΣO ΑΠΟΘΗΚΕΥΣΕΩΣ ΟΠΤΙΚΩΝ ΔΕΔΟΜΕΝΩΝ ΣΕ ΔΥΟ ΣΤΟΙΒΕΣ ΚΑΙ Η ΧΡΗΣΙΜΟΠΟΙΗΣΗ ΕΝΟΣ ΤΕΤΟΙΟΥ ΜΕΣΟΥ 未知
公开(公告)号：CY1107587T1
公开(公告)日：2013-03-13
申请号：CY071100429
申请日：2007-03-28
申请人： KONINKL PHILIPS ELECTRONICS NV
发明人： HELLMIG JOACHIM W , MIJIRITSKII ANDREI , TUKKER TEUNIS W , STALLINGA SJOERD
IPC分类号： G11B7/24 , G11B7/24038 , G11B7/241
摘要： Έναμέσοαποθηκεύσεωςοπτικώνδεδομένωνδιπλήςστοιβάδος (20) περιγράφεταιδιαανάγνωσημεχρησιμοποίησημιαςεστιασμένηςδέσμηςμέσου (29) μεέναμήκοςκύματος 400-410 nm καιενόςαριθμητικούανοίγματος (ΝΑ) 0.84-0.86. Τομέσοέχειέναυπόστρωμα (21) καιμιαπρώτηστοιβάδαστρώσεωνπουονομάζεται L0 (22) καιπεριέχουνμιαπρώτηστρώσηπληροφορίαςκαιμιαδευτέραστοιβάδαστρώσεωνπουονομάζεται L1 (24), καιπεριέχειμιαδευτέραστρώσηπληροφορίας. Μιαδιαφανήςπαρεμβαλλoμένηστοιβάς (24) δέσμηςακτινοβολίας (29) ευρίσκεταιμεταξύ L0 και L1. Μιαστοιβάςμεταδόσεωςπουονομάζεται TS0 μεπάχος dTso καιαποτελεσματικόδείκτηδιαθλάσεως nTso πουπεριέχειόλεςτιςστρώσειςμεταξύ L0 καιμιαςόψεωςεισόδου (26) τουμέσου (20). Μιαστοίβαςμεταδόσεωςπουονομάζεται TS1 μεπάχος dTs1 καιαποτελεσματικόδείκτηδιαθλάσεως nsτ1 πουπεριέχειόλεςτιςστρώσειςμεταξύ L1 καιτηςόψεωςεισόδου (26). Ηπαρεμβαλλομένηστρώση (24) έχειέναπάχοςπουεκλέγεταιαπότηνπεριοχή 20-30 μm, τοπάχος dTS0 αναλόγωςτουδείκτουδιαθλάσεως nTS1 εμπίπτειεντόςτηςορισθείσηςπεριοχής. Κατάτοντρόποαυτόεπιτυγχάνεταιμιααξιόπιστοςανάγνωσηκαιτηςπρώτηςκαιτηςδευτέραςστρώσεωςπληροφορίαςτηςαντιστοίχου L0 και L1.

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