WO2008148567A1 - Mastervorrichtung - Google Patents
Mastervorrichtung Download PDFInfo
- Publication number
- WO2008148567A1 WO2008148567A1 PCT/EP2008/004536 EP2008004536W WO2008148567A1 WO 2008148567 A1 WO2008148567 A1 WO 2008148567A1 EP 2008004536 W EP2008004536 W EP 2008004536W WO 2008148567 A1 WO2008148567 A1 WO 2008148567A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- track
- track structure
- master device
- main
- light beam
- Prior art date
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00745—Sectoring or header formats within a track
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24082—Meandering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
Definitions
- the present invention relates to a master apparatus usable in the method of manufacturing an optical recording medium, an apparatus for manufacturing this master apparatus, a method of manufacturing this master apparatus, an optical recording medium, and a method of manufacturing the optical recording medium.
- Optical recording media are manufactured by a multi-stage process using a master device. Information is stored on the master device in the form of main track and sub-track structures, which are transmitted to the recording media as main and sub-tracks, generally called tracks.
- the preformed track is formed as either a depression or an elevation from the surrounding surface, the so-called "land".
- a track formed as a depression may at least partially be filled with a material whose reflection and / or transmission properties can be changed by light irradiation of a predetermined intensity and wavelength, preferably laser light, reversibly or irreversibly.
- the preformed track serves primarily to allow data to be recorded thereon by means of an information recording device. This is done by a predetermined change of a first feature of the track, such as preferably the reflection or transmission behavior of certain areas of the track. These changes are optically detectable and thus readable by this apparatus, and preferably by any commercially available optical information recording and / or reproducing apparatus.
- the areas of the track in which a predetermined optical change is made are called main data pits.
- the track usually also serves to track the scanning light beam of the information recording and / or reproducing apparatus by detecting second optically detectable features. In this way, the required positioning precision of the writing and reading light beam can be achieved even with a high surface density of the data structures to be written.
- the track is provided with third, optically detectable features, from which information about the linear recording speed can be derived, with which the data structures are preferable to write.
- the track may be sinusoidally deflected about the track center at a predetermined wavelength. By way of this wavelength, for a disc-shaped recording medium, for example, the rotational speed of the motor which rotates this recording medium can be controlled.
- the track is provided with fourth optically detectable features.
- auxiliary information in the track which contains a consecutive address code, is prerecorded in these recording media.
- the documents EP 0 265 695 B1 and EP 0 325 330 B1 describe recording media in which the wavelength of the track oscillation is changed as a function of the auxiliary information.
- optical information recording and / or reproducing apparatuses accept a steadily increasing number of different recording media of different recording materials, sometimes requiring different recording methods and / or recording speeds. Therefore, different recording parameters specific to each recording medium are required for recording. For this reason, in certain forms of known recording media, the pre-stored auxiliary information of the track is extended by control codes, which may contain, among other things, the write parameters specified for the respective recording medium.
- the European patent EP 0 397 238 B1 claims a record carrier in which the auxiliary information consisting of address and control codes is fed into the preformed track by means of a preformed track modulation which carries radial, sinusoidal modulation either by track wobble or Track variation includes recorded.
- a disadvantage of record carriers according to EP 0 397 238 B1 is that the data density of the auxiliary information, which can be introduced into the track via such a modulation, is considerably limited by the requirement of minimizing the influence on the error-free detectability of the data structures to be recorded.
- a disadvantage of record carriers according to DE 10 2005 027 222 A1 and DE 10 2005 018 089 A1 is that the auxiliary information is introduced into the track, as a result of which the data structures to be recorded can be influenced.
- Another object of the invention is to provide an apparatus for producing a recording medium according to the invention. This object is solved by the subject matter of claim 7.
- the invention has the object to provide an apparatus for producing a master device available. This object is solved by the subject matter of claim 17.
- the recording medium according to the invention, as well as the apparatus for producing the recording medium and the master device are subject matter of claims 16, 27 and 28, respectively.
- the master device according to the invention has a substantially spirally or concentrically extending main track structure and at least one substantially spirally or concentrically extending secondary track structure.
- the main track structure is a track structure by means of which a main track is formed on an optical recording medium produced according to the invention.
- the main track serves to guide at least one beam of an information recording and / or reproducing apparatus.
- Along the main track areas are arranged at least in sections, in which a plurality of main data pits can be formed.
- the regions of the track in which a predetermined optical change is made are referred to as main data pits in the context of the present invention.
- Secondary track structure in the sense of the invention denotes a track structure by means of the optical recording medium produced according to the invention a secondary lane is formed.
- the secondary lane has a substantially constant distance to the center of the main lane.
- the geometric center of the secondary track has a substantially constant distance to the geometric center of the main track.
- the geometric centerline of the sub lane structure has a radial distance of TP / N from the geometric centerline of the main lane structure, where TP denotes the track pitch between adjacent main lane structures and N is a number which is preferably between 8/3 and 12 / 3 is located.
- the secondary track structure has a smaller width than the main track structure.
- the sub-track structure has a smaller depth than the main track structure.
- the first auxiliary information contains application and / or control and / or security data.
- the second auxiliary information contains application and / or control and / or security data.
- the sub-track structure is arranged at least on one side of the main track structure, and may have interruptions that vary an optically detectable surface condition of the recording medium such that at least a first auxiliary information is imaged on the recording medium.
- this arrangement makes it possible to reduce the influence of the secondary track structure on the main track structure and, on the other hand, reduces the space requirement for the track structure, which in turn leads to a higher recording density.
- the optically detectable surface textures in the sense of the invention are reflection and / or transmission properties of the optical recording medium, which can be changed by a light irradiation of a predetermined intensity, preferably laser light, reversibly or irreversibly.
- an optical recording medium is a disk having a diameter of 110 to 130 mm, preferably 115-125 mm, more preferably 120 mm. But smaller diameters of e.g. 80 mm are possible.
- the optical recording medium further has on one side and / or both sides a predetermined surface level substantially equal to the entire area of one side.
- the sub track structure can create pilot mark areas on the recording medium with pilot marks in which auxiliary information is stored.
- pilot marking is areas in the secondary track in which predetermined optical / optically detectable changes are made, which can serve as auxiliary information.
- these secondary lane structures with contained pilot markings in the reading direction can be arranged both on both sides of a main track structure, or else only on one side of the main track structure.
- a conventional arrangement of photodiodes is designed such that the positions of the photodiodes are symmetrical to a center line in the direction of the tracks.
- Four central diodes are designed to detect the main track structure.
- two groups of two photodiodes each are arranged, in the following subspot diodes, which serve to detect the secondary track structures.
- the signals of these secondary track diodes are linked by the controller of the detector so that even in the presence of only one-sided secondary track structure, the pilot marks are detected meaningful.
- the secondary track structure is formed only on one side of the main track structure.
- the feature optically detectable in the recording medium is a substantially track-wise depression of the surface between two breaks.
- a substantially track-wise depression of the surface between two breaks optically detectable by the recording medium has a variable depth and / or width, which is thus not constant over the entire length of the groove.
- a substantially track-wise depression of the surface between two breaks which may be optically detected by the recording medium is not clearly defined, but transitions substantially smoothly into at least one (non-recessed) break.
- flowing in the sense of the invention means that the height profile of the secondary track structure is substantially continuous.
- the height and / or depth variation of the secondary track structure is configured such that the light intensity of the reflected secondary beam in the secondary beam photodiodes generates a preferably sinusoidal voltage profile, which serves to guide the track.
- a track width variation of the secondary track (analogous to the height and / or depth variation of the secondary track) generates a preferably sinusoidal voltage profile in the secondary beam photodiodes.
- a substantially sinusoidal voltage curve offers, in contrast to a rectangular or trapezoidal voltage curve, the advantage of possible harmonic-free tracking signals. This reduces the required bandwidth of the tracking signal, as shown by a Fourier transformation.
- a master device in the sense of the invention designates a master for recording media, preferably of glass, on which the main track structure and the secondary track structure are formed. Using this master device, optical recording media are produced in subsequent steps.
- the optically detectable characteristic of the recording medium is a substantially point-like surface texture between two breaks, arranged substantially in the track direction.
- punctiform means an extension in the track direction of 1 to 20 ⁇ m, preferably 3 to 15 ⁇ m, more preferably 5 to 10 ⁇ m.
- track direction in the sense of the invention means the direction in which is written or read on or from the optical recording medium.
- an interruption is a change of the surface structure in the track direction.
- the main track structure is formed, at least in sections, but in particular completely, as a homogeneous surface texture in the track direction.
- AIs homogeneous in the context of the invention a region is designated, which has substantially no change in the surface condition in the track direction.
- the main track structure is formed, at least in sections, as a substantially punctiform surface texture in the track direction.
- the secondary track structure is formed at least in sections as a homogeneous surface texture in the track direction.
- the secondary track structure is formed at least in sections as a substantially point-like surface texture in the track direction.
- the secondary track structure has a surface finish which varies an optically detectable surface texture of a secondary track structure of the recording medium in such a way that a second auxiliary information is imaged on the recording medium.
- the optically detectable properties may be associated with the bits of a line code, such as the Biphase Mark code.
- a previous detectable property represents a logical "1" and an interruption represents a logical "0" of the line code.
- a logical "0" of the digital code for the auxiliary information of either a "00” or an "11” of the Biphase Mark code
- a logical "1" of the digital code for the auxiliary information of either a "01” or a "10””associated with the Biphase Mark Code so that no more than two consecutive 0's or 1's occur in the Biphase Mark Code.
- the main track structure is formed without track modulation.
- track modulation is to be understood as meaning a change in the track width perpendicular to the track direction and / or a change in the track center about a geometric mean value.
- the track width can be varied by a fixed value and / or by a variable value.
- the main track structure is formed with track modulation.
- the track modulation is a radial, substantially sinusoidal track modulation.
- the track modulation is a monofrequent track modulation.
- the track modulation is a track width modulation.
- the track modulation represents a further auxiliary information.
- the secondary track structure is arranged substantially at a constant radial distance from the geometric center of the main track structure.
- the device according to the invention for producing a master device has at least one first optical device for recording a main track structure by means of a first light beam on a base carrier, an electric motor. rooptical beam deflector, which is traversed by the first light beam, and / or a second optical device for recording a Mauspurst structure by means of a second light beam on the base support on.
- the second light beam passes through a second electro-optical beam deflector which adjusts a substantially equal radial distance between the center of the main track structure and the sub-track structure by means of a supplied control signal, and a sub-track structure generator controls the second light beam at least in response to a first and / or second auxiliary - formation.
- both light beams pass through a control unit which focuses these light beams on the base carrier to achieve a uniform light spot.
- a first light beam for recording a main structure track without means for directing the beam is directed onto the base carrier.
- this first light beam passes through this focusing control unit to compensate for any unevenness of this master device.
- a second light beam passes through an electro-optical beam deflector and is brought together with subsequent beam steering devices with this first light beam in front of this focusing control unit.
- an electro-optical beam deflector and a beam steering device for this first light beam can be dispensed with.
- a track width modulation of the first light beam is performed by means of the electro-optical beam deflector.
- the energy of the light beam is varied to produce the structure required for the secondary track, whereby a variation of the height and / or depth and / or width of the structures is achieved.
- a variation of the energy of the light beam will For example, achieved by the light beam with a suitable alternating signal, which is superimposed on a constant power is operated.
- the position of the laser focal points on the master is calculated by means of an image processing unit, and the position information is fed to at least one optical deflector.
- the laser focus of both beams set on the master is imaged onto a first measuring camera.
- the image information derived therefrom is supplied to at least one control computer and / or at least one image processing unit.
- the position of the laser focus points on the master can be calculated and / or adjusted and / or readjusted. In essence, this determines a measure of the distance of the secondary beam to the main beam which is used to control an optical deflector and / or a control computer. The determined actual value of the distance is compared with a desired value and readjusted if necessary exactly in-line.
- two measuring cameras are used on which the laser focus of both beams set on the master is imaged.
- the image information required for the control computer and the image processing unit are determined independently of one another and supplied separately to at least one control computer and at least one image processing unit.
- the first light beam is driven by means of a main track generator.
- the main track generator outputs a DC signal and an AC signal for driving the first light beam.
- the main track generator outputs an analog signal for driving the electro-optical beam deflector.
- the second light beam is driven by means of a secondary track generator.
- the auxiliary track generator outputs a DC signal and an AC signal for controlling the second light beam.
- the secondary track generator outputs a DC voltage and / or AC signal for driving the second electro-optical beam deflector.
- control signal supplied to the second beam deflector is a DC voltage signal.
- the analog signal output by the main track generator for driving the electro-optical beam deflector is supplied to the electro-optical beam deflector.
- the recording medium of the present invention is obtained by a production method or apparatus for producing a recording medium using one of the above-described master devices.
- the inventive method for producing a master device comprises at least one of the following steps: exposing a base carrier with a main track structure by means of a first light beam, wherein the surface of the base carrier is provided with a photoresist, exposing the base carrier with a secondary track structure by means of a second light beam, developing the exposed photoresist, removing the exposed or unexposed photoresist from the base support, applying a first metallic layer to the base support, and / or applying a second metallic layer to the base support.
- Figs. 3-16 further examples of the arrangement of main lane and secondary lane structure
- FIG. 19 shows examples of possible structural profiles of the secondary track structure
- Fig. 20 is a schematic representation of the apparatus for producing a master device.
- FIG. 21 shows a schematic representation of another device for producing a master device with rectilinearly guided first light beam as a more cost-effective variant of the device from FIG. 20
- FIG. 22 shows a representation of the arrangement of the central photodiodes A, B, C, D and the photodiodes of the secondary beams E, F and G, H of a conventional reader / detector.
- FIG. 1 shows two examples of the arrangement of the main track structure 1 and the secondary track structure 2 on the master device.
- the main track structure 1 is formed as a substantially homogeneous track surface texture.
- the secondary track structure 2 is likewise designed as a surface texture which is substantially homogeneous in the track direction and is arranged on one side of the main track structure 1, the secondary track structure 2 having interruptions.
- the secondary track structure 2 may also be arranged on the opposite side of the main track structure 1.
- the secondary track structure 2 shown in FIG. 1 b) essentially corresponds to that in the secondary track structure 2 in FIG. 1 a), the interruptions in the secondary track structure 2 in the track direction being greater than the surface texture of the secondary track structure 2 which is substantially homogeneous in track alignment.
- the main track structure 1 corresponds to the main track on an optical recording medium
- the sub-track structure 2 corresponds to the sub-track or pilot track on an optical recording medium.
- the distances between the main track structures 1 are preferably chosen to be substantially constant in order to simplify the positioning of the write and read head over an optical recording medium.
- the secondary track structure 2 is further arranged substantially equidistant from the center of the main track structure 1. Particularly preferably, the distance between the main structures 1, and between the main track structure 1 and secondary track structure 2 is minimally selected in order to maximize the information density on the resulting recording medium.
- FIGS. 2 a) and 2 b) essentially correspond to FIGS. 1 a) and 1 b), wherein the secondary track structure 2 is arranged symmetrically on both sides of the main track structure 1.
- the secondary track structure 2 is further arranged in sections alternately on the respective opposite side of the main track structure 1.
- the arrangement of the sub-track structure 2 on alternately opposite sides of the main track structure 1 is advantageous in that a DC-free tracking signal can be obtained from the optical detection of the sub-track on the recording medium, in particular at substantially evenly distributed numbers of sub-track structures 2 on both sides of the main track structure 1.
- the secondary track structure 3 is formed as a substantially punctiform surface texture arranged substantially in the track direction and arranged on one side of the main track structure 1.
- FIG. 4 shows the sub-track structure 3, which is arranged symmetrically on both sides of the main track structure 1.
- the main track structure 4 is formed as a substantially track-wise homogeneous surface with discontinuities.
- the secondary track structures 2, 3 can be embodied as a substantially homogeneous surface texture (FIGS. 5 and 6) or as a substantially punctiform surface texture (FIGS. 7 and 8).
- the sub-track structures 2, 3 are arranged on one side of the main track structure 4.
- the sub-track structures 2, 3 are arranged symmetrically on both sides of the main track structure 4.
- the interruptions in the main track structure 4 can be regular or irregular, or have periodic patterns. By the breaks in the main track structure 4, it is possible to integrate possible auxiliary information into the main track structure and thus to further increase the information density on the recording medium.
- FIGS. 9 and 10 essentially correspond to FIGS. 1 and 2, wherein the main track structure 5 is formed as a substantially in-track homogeneous surface texture, which is monofrequently modulated.
- FIGS. 11 and 12 essentially correspond to FIGS. 9 and 10, wherein the main track structure 6 is formed as a substantially in-track homogeneous surface texture, which is monofrequently modulated, wherein the main track structure 6 has interruptions.
- FIGS. 13-16 substantially correspond to FIGS. 9-12, with the difference that the secondary track structure 3 is designed as a substantially punctiform, substantially punctiform surface texture.
- FIG. 17 again shows four different possible embodiments of the shape of the main track structures 1, 4, 5 and 7.
- the main track structure 1 preferably has a width W of 200-800 nm, more preferably 400-600 nm, even more preferably 550 nm.
- the effective depth TH of the main track structure is preferably between 80 and 130 nm, more preferably between 90 and 120 nm. even more preferably at 105 nm.
- the distance TP between adjacent main track structures 1 is preferably 1000-2000 nm, more preferably 1600 nm.
- the main track structure 1 has a flank angle between a normal to the substantially planar surface of the master device and the flank of the main track structure 1 of preferably 30-50 °, more preferably 40 °.
- the secondary track structure 2 preferably has a width Wn of 100-400 nm, more preferably of 200-300 nm, even more preferably 250 nm.
- the effective depth TN of the sub-track structure is preferably between 25 and 75 nm, more preferably between 40 and 60 nm. even more preferably at 50 nm.
- the distance S between the main track structure 1 and the sub-track structure 2 is preferably 350-600 nm, more preferably 450-550 nm, still more preferably 500 nm.
- the length L of the sub-track structure 2 in the track direction is preferably between 10 and 60 ⁇ m.
- the radial distance S (preferably about 400-600 nm) of the main track structure 1 and the secondary track structure 2 is preferably chosen so that neither a considerable overlap with the track nor a disturbing crosstalk by the adjacent tracks arises.
- the length of the pilot marks that is, the pits mounted within the sub-track structure, is variable and corresponds to approximately half the wavelength associated with the usual track frequency of 22.05 kHz.
- the sub-track structure 2 has a flank angle between a normal to the substantially planar surface of the master device and the flank of the sub-track structure extending substantially parallel to the track direction of preferably 10-40 °, more preferably 25 °.
- the sub-track structure may be formed on one side only of the main track structure.
- FIG. 19 shows a schematic illustration of the secondary track structure 2 as a top view (FIG. 19 a) and four examples of a longitudinal section of the track structure of the master device (structural profiles FIGS. 19 b, 19 c, 19 d, 19 e).
- Fig. 19b shows a section of a structural profile of a secondary track structure 2 in the three pilot marks, i.e. Wells are introduced.
- the flanks 8 delimiting the recess substantially in the track direction are perpendicular to the substantially planar surface of the master device.
- the light beam reflected by these pilot markings when scanning the secondary track generates in the secondary track photodiodes E, F or G, H a substantially rectangular output voltage which is further processed, for example, for tracking.
- a disadvantage of substantially rectangular signals is that, compared to sinusoidal signals, increased number of harmonics thereby increasing the (frequency-dependent) bandwidth of the signal.
- FIG. 19c shows a section of a structural profile of a secondary track structure in which three pilot markings, ie depressions, are introduced.
- the rectilinear flanks 8 bounding the recess substantially in the track direction conclude a flank angle preferably between 10 ° -40 ° with a normal to the substantially planar surface of the master device preferably between 20 ° -30 °.
- beveled flanks offer the advantage that the output signals of the secondary track photodiodes E, F or G 1 H also have flatter signal edges, which (compared to rectangular output signals with steep signal edges) results in fewer harmonics and a smaller one Bandwidth of the signal results.
- Fig. 19d shows a section of a structural profile of a secondary track structure in the three pilot marks, i. Wells are introduced.
- the flanks 8 which delimit the depression substantially in the track direction, do not run in a straight line, but are concave as shown. In an alternative embodiment, however, the flanks can also be configured convex.
- Fig. 19e shows a section of a structural profile of a secondary lane structure in the three pilot marks, i.e. Wells are introduced.
- substantially sinusoidal output signals are generated in the secondary track photodiodes E, F or G, H, which are converted into tracking signals which are as harmless as possible to harmonics.
- the bandwidth required for the signal is minimized as far as possible.
- FIG. 20 shows an exemplary embodiment of a device according to the invention for producing the main track structure 1 and the secondary track structure 2 on the master device 16.
- a first monochromatic light source 11 for example comprising a laser, generates a first light beam having a first wavelength approximately equal to the width of the main track structure 1.
- the intensity of the first light beam can be adjusted so that a photoresist provided on the surface of the master device 16 is suitably exposed to produce the predetermined geometry of the main track structure 1.
- the main track generator 18 may also generate pit structures, ie, substantially point-like surface variations, by direct digital laser drive, and may provide an analog signal for generating track wobble with the electro-optic beam deflector 13.
- the thickness of the photoresist preferably corresponds to the depth of the main track structure 1 to be generated.
- the required beam geometry is generated by means of a beam former 13 and a movable objective lens such that the width of the light spot of the first light beam on the surface of the master device 16 is approximately the width the main track structure 1 is adjusted.
- the master device is appropriately moved parallel to the focal plane of the first light beam, so that the light spot on the photoresist describes the desired spiral or concentric circular main track structure 1.
- the movable objective lens 15 is readjusted continuously by means of the focus control unit in order to obtain a uniform light spot.
- a second monochromatic light source 12 which may also comprise a laser, generates a second light beam having a second wavelength approximately equal to the width of the sub-track structure 2.
- the second light beam 12 may be varied in intensity with the aid of a sub-track structure formatter 19 such that the photoresist on the surface of the master device 16 is suitably exposed to produce the predetermined geometry of the sub-track structure 2.
- auxiliary information is introduced into the sub track structure 2.
- the depth of the secondary track structure 2 with respect to the depth of the main track structure 1 can be reduced by reducing the light intensity of the second light path 2.
- beam 12 is chosen to be lower than the light intensity of the first light beam 11.
- the depth and / or width of the secondary track can also be changed continuously, so that a height profile as shown for example in Fig. 19e.
- the laser can be controlled by the secondary track pattern formatter 19 with a suitable alternating signal, which is superimposed on a constant power.
- the beam deflector 14 By means of the beam deflector 14 and the imaging optics 15, the light spot of the second light beam 12 is generated on the surface of the master device 16, which corresponds approximately to the width of the secondary track structure 2 in its diameter. If the beam deflector 14 is additionally driven by an alternating signal, two secondary track structures 2 can be written symmetrically to the main track structure 1.
- a mirror unit allows a centered superposition of the light beams 11 and 12.
- Light spot of the first light beam 11 on the surface of the master device corresponds to the radial distance of the lines of symmetry of the secondary track structure 2 from the line of symmetry of the main track structure 1. This distance can
- the device for generating the main track structure 1 and the secondary track structure 2 on the master device 16 also has a control computer 20 which drives the main track formatter 18, the slave track formatter 19 and at least one turntable 17 on which the master device 16 rests.
- FIG. 21 shows a further device according to the invention for generating the main track structure 1 and the secondary track structure 2 on the master device 16.
- Two monochromatic light sources 11 and 12 each generate a light beam, which by means of a beam guiding device, for example comprising a mirror and a beam collecting device, through an optical system 15 are directed towards the surface of the master device.
- Fig. 22 shows an arrangement of the central photodiodes A, B, C, D and the photodiodes E, F and G, H for the secondary tracks, as they can be found in a commercially available reading device.
- the arrangement of the photodiodes is symmetrical to the center line M.
- the included arrow indicates the course direction of the tracks.
- the mathematical combination of the secondary track diodes by the control of the detector or of the burner allows the formation of the secondary track structure only on one side of the main structural track.
- FIG. 23 shows another device according to the invention for producing the main track structure 1 and the secondary track structure 2 on the master device.
- the laser focus of both light beams set on the master is imaged by decoupling from the existing beam path onto a first measuring camera and a second measuring camera.
- the image information of the second measuring camera derived therefrom is supplied to the control computer 20 and supplied to the image processing unit 30.
- the position of the laser focus points on the master is calculated. This determines a measure of the distance used to drive the electro-optical deflector 14. It is thus possible to control the distance of the secondary lane to the main lane in-line and to adjust continuously if necessary.
- FIG. 24 shows another device according to the invention for producing the main track structure 1 and the secondary track structure 2 on the master device. Compared to the device from FIG. 23, only one measuring camera is used. whose image information is supplied to both the control computer 20 and the image processing unit 30 for further processing.
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Abstract
Description
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Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08759074A EP2158589A1 (de) | 2007-06-06 | 2008-06-06 | Mastervorrichtung |
CN200880019171.1A CN101802914A (zh) | 2007-06-06 | 2008-06-06 | 主机装置 |
MX2009013105A MX2009013105A (es) | 2007-06-06 | 2008-06-06 | Dispositivo maestro. |
US12/602,872 US20110032810A1 (en) | 2007-06-06 | 2008-06-06 | Master device |
CA2690315A CA2690315A1 (en) | 2007-06-06 | 2008-06-06 | Master device |
BRPI0814242-4A2A BRPI0814242A2 (pt) | 2007-06-06 | 2008-06-06 | Dispositivo mestre, mídia de registro, dispositivo para produzir um dispositivo mestre, processo para produzir um dispositivo mestre |
JP2010510695A JP2010529584A (ja) | 2007-06-06 | 2008-06-06 | マスターデバイス |
Applications Claiming Priority (6)
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DE102007026302.5 | 2007-06-06 | ||
DE200710026302 DE102007026302A1 (de) | 2007-06-06 | 2007-06-06 | Mastervorrichtung |
DE102008004254.4 | 2008-01-14 | ||
DE200810004254 DE102008004254A1 (de) | 2008-01-14 | 2008-01-14 | Mastervorrichtung |
DE102008018222.2 | 2008-04-10 | ||
DE200810018222 DE102008018222A1 (de) | 2008-04-10 | 2008-04-10 | Mastervorrichtung |
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WO2008148567A1 true WO2008148567A1 (de) | 2008-12-11 |
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PCT/EP2008/004536 WO2008148567A1 (de) | 2007-06-06 | 2008-06-06 | Mastervorrichtung |
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US (1) | US20110032810A1 (de) |
EP (1) | EP2158589A1 (de) |
JP (1) | JP2010529584A (de) |
KR (1) | KR20100035156A (de) |
CN (1) | CN101802914A (de) |
BR (1) | BRPI0814242A2 (de) |
CA (1) | CA2690315A1 (de) |
MX (1) | MX2009013105A (de) |
TW (1) | TW200907958A (de) |
WO (1) | WO2008148567A1 (de) |
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TW201243842A (en) * | 2011-04-26 | 2012-11-01 | Princo Corp | Recordable compact disk and method of manufacturing recordable compact disk compatible with CD-R |
CN117733511B (zh) * | 2023-12-29 | 2024-06-18 | 苏州弘盛耀电子科技有限公司 | 一种激光切割的显示器返修拆解设备、系统及方法 |
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EP0397238A1 (de) * | 1989-05-08 | 1990-11-14 | Koninklijke Philips Electronics N.V. | Informationsaufzeichnungssystem, Aufzeichnungsverfahren und Aufzeichnungsträger zur Anwendung in einem derartigen Informationsaufzeichnungssystem |
EP0479577A2 (de) | 1990-10-03 | 1992-04-08 | Canon Kabushiki Kaisha | Optisches Aufzeichnungsmedium und Verfahren zur dessen Herstellung |
EP0490547A1 (de) | 1990-11-30 | 1992-06-17 | Sharp Kabushiki Kaisha | Verfahren zur Herstellung einer Photomaske für optische Speicherung |
EP0851416A2 (de) | 1992-05-15 | 1998-07-01 | Sharp Kabushiki Kaisha | Optische Platte und Verfahren zur Herstellung einer optischen Platte |
US5882554A (en) | 1995-06-15 | 1999-03-16 | Nec Corporation | Method for exposing optical master disk |
EP1118983A2 (de) | 1995-06-26 | 2001-07-25 | Pioneer Electric Corporation | Optische Platte, Lesesystem und Verfahren zur Herstellung der Platte |
DE102005018089A1 (de) | 2005-04-19 | 2006-10-26 | Maiworm & Dr. Bosien Grundstücks GbR | Aufzeichnungsmedium, Vorrichtung zu dessen Herstellung sowie eine Vorrichtung zur optischen Informationsaufzeichnung auf und/oder -wiedergabe von diesem Aufzeichnungsmedium |
DE102005027222A1 (de) | 2005-06-13 | 2006-12-14 | Maiworm & Dr. Bosien Grundstücks GbR | Aufzeichnungsmedium, Vorrichtung zu dessen Herstellung sowie eine Vorrichtung zur optischen Informationsaufzeichnung auf und/oder -wiedergabe von diesem Aufzeichnungsmedium |
-
2008
- 2008-06-06 CN CN200880019171.1A patent/CN101802914A/zh active Pending
- 2008-06-06 US US12/602,872 patent/US20110032810A1/en not_active Abandoned
- 2008-06-06 BR BRPI0814242-4A2A patent/BRPI0814242A2/pt not_active IP Right Cessation
- 2008-06-06 EP EP08759074A patent/EP2158589A1/de not_active Withdrawn
- 2008-06-06 CA CA2690315A patent/CA2690315A1/en not_active Abandoned
- 2008-06-06 MX MX2009013105A patent/MX2009013105A/es not_active Application Discontinuation
- 2008-06-06 JP JP2010510695A patent/JP2010529584A/ja active Pending
- 2008-06-06 KR KR1020107000052A patent/KR20100035156A/ko not_active Application Discontinuation
- 2008-06-06 TW TW097121140A patent/TW200907958A/zh unknown
- 2008-06-06 WO PCT/EP2008/004536 patent/WO2008148567A1/de active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0397238A1 (de) * | 1989-05-08 | 1990-11-14 | Koninklijke Philips Electronics N.V. | Informationsaufzeichnungssystem, Aufzeichnungsverfahren und Aufzeichnungsträger zur Anwendung in einem derartigen Informationsaufzeichnungssystem |
EP0397238B1 (de) | 1989-05-08 | 1995-11-22 | Koninklijke Philips Electronics N.V. | Informationsaufzeichnungssystem, Aufzeichnungsverfahren und Aufzeichnungsträger zur Anwendung in einem derartigen Informationsaufzeichnungssystem |
EP0479577A2 (de) | 1990-10-03 | 1992-04-08 | Canon Kabushiki Kaisha | Optisches Aufzeichnungsmedium und Verfahren zur dessen Herstellung |
EP0490547A1 (de) | 1990-11-30 | 1992-06-17 | Sharp Kabushiki Kaisha | Verfahren zur Herstellung einer Photomaske für optische Speicherung |
EP0851416A2 (de) | 1992-05-15 | 1998-07-01 | Sharp Kabushiki Kaisha | Optische Platte und Verfahren zur Herstellung einer optischen Platte |
US5882554A (en) | 1995-06-15 | 1999-03-16 | Nec Corporation | Method for exposing optical master disk |
EP1118983A2 (de) | 1995-06-26 | 2001-07-25 | Pioneer Electric Corporation | Optische Platte, Lesesystem und Verfahren zur Herstellung der Platte |
DE102005018089A1 (de) | 2005-04-19 | 2006-10-26 | Maiworm & Dr. Bosien Grundstücks GbR | Aufzeichnungsmedium, Vorrichtung zu dessen Herstellung sowie eine Vorrichtung zur optischen Informationsaufzeichnung auf und/oder -wiedergabe von diesem Aufzeichnungsmedium |
DE102005027222A1 (de) | 2005-06-13 | 2006-12-14 | Maiworm & Dr. Bosien Grundstücks GbR | Aufzeichnungsmedium, Vorrichtung zu dessen Herstellung sowie eine Vorrichtung zur optischen Informationsaufzeichnung auf und/oder -wiedergabe von diesem Aufzeichnungsmedium |
Also Published As
Publication number | Publication date |
---|---|
CA2690315A1 (en) | 2008-12-11 |
CN101802914A (zh) | 2010-08-11 |
KR20100035156A (ko) | 2010-04-02 |
US20110032810A1 (en) | 2011-02-10 |
MX2009013105A (es) | 2010-09-10 |
BRPI0814242A2 (pt) | 2015-01-06 |
JP2010529584A (ja) | 2010-08-26 |
EP2158589A1 (de) | 2010-03-03 |
TW200907958A (en) | 2009-02-16 |
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