# US 12,763,102 B2 · Compact writing and reading head for hyper speed data recording on ceramic material > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,102 B2 - Document ID: US12763102B2 - Status: Granted - Kind: B2 - Application number: 19/103,992 - Filed: 2022-08-17 - Published: 2026-05-28 - Granted: 2026-10-13 - Earliest claimed: 2022-08-17 - Assignees: Ceramic Data Solutions GmbH - Applicants: Ceramic Data Solutions GmbH - Inventors: Christian Pflaum - Web page: https://patentgrep.com/patent/US12763102B2 ## CPC - G11B 7/08552: {using electro-optical elements} - G11B 7/00451: {involving ablation of the recording layer} - G11B 7/127: Lasers; Multiple laser arrays {(lasers per se H01S)} - G11B 7/1374: Objective lenses {(optical objectives per se G02B9/00)} - G11B 7/1395: Beam splitters or combiners (G11B7/1353, G11B7/1356 take precedence {; beam splitting or combining per se G02B27/10}) - G11B 7/243: comprising inorganic materials only, e.g. ablative layers - G11B 7/08564: {using galvanomirrors} - G11B 7/1359: Single prisms - G11B 7/1362: Mirrors - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract The present invention relates to a compact writing and reading head for hyper-speed data recording on ceramic material. ## Claims ### Claim 1 A method for recording data in a layer of a ceramic material, the method comprising: (a) providing the layer of the ceramic material; and (b) selectively illuminating a plurality of regions of the layer of the ceramic material with a laser beam using a digital micromirror device and at least one scanning device; (c) wherein parameters of the laser beam and a time of illumination for each of the selected regions are configured to ablate each of the selected regions in order to record data in the layer of the ceramic material by creating recesses in the layer of the ceramic material; and (d) wherein the laser beam originates from a picosecond laser or from a femtosecond laser, wherein the laser beam passes, in order, through a prism or a semi-transparent mirror, hits the digital micromirror device, and again passes through the prism or the semi-transparent mirror before selectively illuminating the plurality of regions of the layer of the ceramic material. ### Claim 2 (depends on 1) The method of claim 1, wherein providing the layer of the ceramic material comprises providing a ceramic substrate and coating the substrate with the layer of the ceramic material, wherein a material of the ceramic substrate is different from the layer of the ceramic material. ### Claim 3 (depends on 2) The method of claim 2, wherein the ceramic substrate is transparent to a wavelength of the laser beam. ### Claim 4 (depends on 3) The method of claim 3, wherein selectively illuminating the plurality of regions of the layer of the ceramic material with the laser beam using the digital micromirror device comprises illuminating the layer of the ceramic material through the transparent substrate. ### Claim 5 (depends on 1) The method of claim 1, wherein step (b) comprises: (b1) selectively illuminating the plurality of regions within a first area of the layer of the ceramic material; (b2) using the at least one scanning device to shift a focus to a second area of the layer of the ceramic material, wherein the second area is adjacent to the first area; and (b3) selectively illuminating a plurality of regions within the second area of the layer of the ceramic material. ### Claim 6 (depends on 5) The method of claim 5, wherein steps (b1) and (b2) are repeated for further adjacent areas of the layer of the ceramic material, wherein the areas are arranged linearly along a first axis. ### Claim 7 (depends on 5) The method of claim 5, wherein the at least one scanning device comprises one or more of a polygon scanner, an acousto-optic deflector, or a galvo scanner. ### Claim 8 (depends on 5) The method of claim 5, wherein the at least one scanning device comprises a first scanning device and a second scanning device, wherein the first scanning device is configured to shift the focus along a first axis, and wherein the second scanning device is configured to shift the focus along a second axis perpendicular to the first axis. ### Claim 9 A device for recording data in a layer of a ceramic material, the device comprising: a laser source comprising a picosecond laser or a femtosecond laser; a digital micromirror device adapted to emit multiple laser beams, wherein a fluence of each of the multiple laser beams emitted by the digital micromirror device is greater than 100 mJ/cm2; a prism or a semi-transparent mirror positioned between the laser source and the digital micromirror device; a substrate holder; focusing optics adapted to focus each of the multiple laser beams emitted by the digital micromirror device onto a substrate mounted on the substrate holder; and one or more scanning devices adapted to steer a pattern of the multiple laser beams emitted by the digital micromirror device over the substrate, thereby recording the data. ### Claim 10 (depends on 9) The device of claim 9, further comprising a reading device configured to image the recorded data. ### Claim 11 (depends on 10) The device of claim 10, further comprising a beam splitter between the prism or the semi-transparent mirror and the focusing optics adapted to allow light emitted from the substrate to pass to the reading device. ### Claim 12 (depends on 10) The device of claim 10, further comprising a light source adapted to illuminate the substrate via the prism or the semi-transparent mirror and the digital micromirror device and/or via the beam splitter. ### Claim 13 (depends on 9) The device of claim 9, wherein the one or more scanning devices comprises one or a combination of one or more galvo scanners, one or more polygon scanners, and one or more acousto-optic deflectors. ### Claim 14 (depends on 9) The device of claim 9, wherein the one or more scanning devices are arranged between the digital micromirror device and the focusing optics. ### Claim 15 (depends on 9) The device of claim 9, wherein the focusing optics comprise a focal reducer and an f-theta-objective. ### Claim 16 (depends on 15) The device of claim 15, wherein the focal reducer is arranged between the digital micromirror device and the one or more scanning devices. ### Claim 17 (depends on 15) The device of claim 15, wherein the one or more scanning devices are arranged between the focal reducer and the f-theta-objective. ### Claim 18 (depends on 9) The device of claim 9, further comprising a transport mechanism adapted to transport an elongated layer of a ceramic material. ### Claim 19 (depends on 18) The device of claim 18, further comprising a controller adapted to control the laser source, the one or more scanning devices, the digital micromirror device, and the transport mechanism so as to generate several patterns on adjacent areas over the substrate in order to create respective patterns of recesses. ### Claim 20 A device for recording data in a layer of a ceramic material, the device comprising: a laser source comprising a picosecond laser or a femtosecond laser; a digital micromirror device adapted to emit multiple laser beams; a prism or a semi-transparent mirror positioned between the laser source and the digital micromirror device; a substrate holder; focusing optics adapted to focus each of the multiple laser beams emitted by the digital micromirror device onto a substrate mounted on the substrate holder, wherein the focusing optics comprise a focal reducer and an f-theta-objective; and one or more scanning devices adapted to steer a pattern of the multiple laser beams emitted by the digital micromirror device over the substrate, thereby recording the data.