71 results about "Optical tape" patented technology

Disclosed herein are aspects of optical tape technology, tape manufacturing, and tape usage. Methods and systems of tape technology disclose optical tape media including: configurations, formulations, markings, and structure; optical tape manufacturing methods, systems, and apparatus methods and systems including: curing processes, coating methods, embossing, drums, testing, tracking alignment stamper strip; optical tape methods and systems including: pick up head adapted for the disclosed optical tape; and optical tape uses including optical storage media devices for multimedia applications

Disclosed is an optical tape which contributes to a high recording density, and which achieves an enhanced flexibility in a width of a data track and a data format. The optical tape includes servo tracks being recorded thereon. These servo tracks contain respective servo signals, and are arranged lengthwise and adjacent to one another over a whole of a width or a part of the optical tape. Further, each of the servo tracks includes address signals being recorded thereon at predetermined intervals in isolation from the corresponding servo signals. These address signals indicate their respective locations of corresponding one of the servo tracks and their respective lengthwise locations on the optical tape. In addition, the servo signals are read from the respective servo tracks, and are used to adjust tracking on the optical tape.

Controlling humidity at the surface of a solution containing analyte and ligand, e.g., for an assay, is disclosed, wherein the control of the humidity induces evaporative stirring in the solution to bring analyte and ligand into contact more quickly than when using diffusion. An oven which blows air in a controlled stream across slides, with wells containing reagent and analyte, is disclosed. Also disclosed is optical tape which can replace a conventional glass coverslip used for viewing of the reaction results.

The method for filtering an optical signal comprising a plurality of channels lying on a grid of optical frequencies equally spaced by a frequency spacing and occupying an optical bandwidth, comprises: a) operating an optical filter comprising a plurality of resonators each having a respective free spectral range, wherein a first resonator of the plurality is optically coupled to the optical signal and the remaining resonators are optically coupled in series to the first resonator, so that a respective resonance of each one of the plurality of resonators falls within a first frequency band having bandwidth less than or equal to 15 GHz; b) operating the optical filter so as to obtain a separation between any resonance of at least one resonator falling within the optical bandwidth with respect to a resonance of at least another different resonator nearest to the any resonance, the separation being greater than or equal to 150 GHz and no more than 1 THz; c) tuning all the resonators of the optical filter so as to move all respective resonances of the resonators by a respective frequency interval greater than the frequency spacing while maintaining a distance between the any resonance of the at least one resonator with respect to the nearest resonance of the at least another different resonator not less than 150 GHz and no more than 1 THz; and d) operating the optical filter so that a further respective resonance of each one of the plurality of resonators falls within a second frequency band, different from the first frequency band, having bandwidth less than or equal to 15 GHz. A corresponding device for filtering an optical signal is disclosed.

The invention provides a temperature and concentration measuring system and method based on a double-optical-comb spectrum technology, and belongs to the technical field of laser absorption spectra. The measuring system comprises two optical frequency combs with the repetition frequency difference smaller than 1 MHz, a 2*2 optical fiber coupler, an optical band-pass filter, a collimator, a low-pass filter, a photoelectric detector, a data acquisition card and the like. The double optical combs are subjected to coupling beam splitting, one path is a measurement light path and is received by thephotoelectric detector after passing through to-be-measured gas and the optical band-pass filter, and the other path is a reference light path and is coupled to the photoelectric detector after passing through the optical band-pass filter. Interference signals generated by the double optical combs on the photoelectric detector are filtered by the low-pass filter and then acquired by the data acquisition card. Fourier transform is carried out on interference signals of measurement and reference light paths to extract absorption spectrum information. Finally, the temperature and the concentration are calculated based on a polychromatic method and a least square method. According to the invention, the precise spectral resolution capability of the optical frequency combs is utilized to realize wavelength-free calibration measurement of temperature and concentration, and the application prospect is wide.

Phase-change type rewritable optical recording media, such as optical discs, optical cards, and optical tapes, where recorded data can be erased or overwritten and where data can be recorded with high speed and high density by applying a light beam can include an optical recording medium is one that includes a laminate member, which in various embodiments contains a transparent substrate, a first dielectric layer, a recording layer, a second dielectric layer, a light absorbing layer, and / or a reflecting layer. In various embodiments of the invention, the shortest distance between recorded marks in the recording direction along the track is less than lambd / NA, with lambd and NA denoting the wavelength of the light used and the numerical aperture of the objective lens of the optical head, respectively.

A method and apparatus for measuring bandwidth of light emitted from a laser is disclosed which may comprise: a first and second wavelength sensitive optical bandwidth detectors providing, respectively, an output representative of a first parameter indicative of the bandwidth of the emitted light as measured respectively by the first and second bandwidth detectors, and an actual bandwidth calculation apparatus adapted to utilize these two outputs as part of a multivariable linear equation employing predetermined calibration variables specific to either the first or the second bandwidth detector, to calculate a first actual bandwidth parameter or a second actual bandwidth parameter. The first actual bandwidth parameter may be a spectrum full width at some percent of the maximum (“FWXM”), and the second actual bandwidth parameter may be a portion containing some percentage of the energy (“EX”). The first and second bandwidth detectors may an etalon and the outputs may be representative of a fringe width of a fringe of an optical output of the respective etalon at FWXM. The precomputed calibration variables may be derived from respective three dimensional plots representing, respectively, detector outputs in relation to a calibrating input light with known values of the first and second actual bandwidth parameters, which may be FWXM and EX. The first / second three dimensional plot may provide a solution: (first / second output)=(a / d*(calibrating input light known value of FWXM))+(b / e*(calibrating input light known value of EX)+c / f; and the actual bandwidth calculation apparatus may use the derived equation: (first actual bandwidth parameter)=((b*(second output))−(e*(first output))+ce−bf) / (bd−ae), or the equation: (second actual bandwidth parameter)=((a*(second output))−(d*(first output))+cd−af) / (ae−bd). FWXM may be FWHM and EX may be E95. The transfer function of the first optical bandwidth detector may be selected to be much more sensitive to FWXM than to EX and the transfer function of the second optical bandwidth detector may be selected to be much more sensitive to EX than to FWXM.

The invention discloses a preparation method of an optical adhesive, a liquid optical adhesive and curved-screen optical tape and relates to the field of optical display. The optical adhesive comprises acrylic acid derivative polymer, acrylic acid derivative monomer and a photoinitiator, wherein the molecular weight of the acrylic acid derivative polymer is 20w-80w, and the acrylic acid derivativemonomer comprises Isobornyl methacrylate. The optical adhesive is high in adhesive force, high in adhesive force under high temperature, capable of inhibiting the generation of bubbles between the adhesive and a curved screen under high temperature and capable of satisfying high reliability requirements. The preparation method has the advantages that the method is simple and practicable, and theobtained products are applicable to the curved screen and high in high-temperature reliability.

The invention discloses a europium doped bismuth ferrite film, which comprises a silicon substrate with lanthanum nickelate as the buffer layer and a target material with a composition formula of Bi1-xEuxFeO3 (with x being greater than or equal to 0 and smaller than or equal to 0.07). The target material is deposited on the substrate. The invention also discloses a preparation method of the europium doped bismuth ferrite film. The method consists of: cleaning the substrate, placing the target material and the substrate in a film coating chamber, adjusting the pressure to less than 5*10<-4>Pa, raising the temperature of the substrate to 700DEG C at a speed of 10DEG C per minute; adjusting the sputtering pressure to 10Pa, maintaining the state for 10min under 700DEG C and an oxygen pressure of 10Pa, making adjustment to invert the substrate and rotate the target material in forward direction, keeping a 6cm distance between the substrate and the target material, employing a pulse laser to conduct film deposition for 60min and performing heat preservation for 30min, then conducting cooling at a speed of 20DEG C per minute to 200DEG C, and taking out the product, thus obtaining the europium doped bismuth ferrite film. The preparation method provided by the invention has the advantages of easily controllable reaction process and easily available raw materials. The europium doped bismuth ferrite film has significantly improved crystallization properties and electric leakage properties, and a smaller optical band gap, thus improving the photovoltaic properties of BiFeO3 films. The europium doped bismuth ferrite film has wide application prospects.

A method for forming an optical tape for data storage from a substrate film includes a step of patterning a curable liquid composition onto a side of the substrate film. Characteristically, the curable liquid composition includes a free radical photoinitiator and a polymerizable component that includes at least one acrylate. The curable liquid composition is illuminated with actinic radiation to form a patterned imprint layer disposed over the substrate film. A multilayer data recording assembly is placed over the imprint layer. An optical tape made by the method is also provided.

A method for forming an optical tape for data storage from a substrate film includes a step of patterning a curable liquid composition onto a side of the substrate film. Characteristically, the curable liquid composition includes a cationic photoinitiator and a polymerizable component selected from the group consisting of vinyl ethers, cyclohexene oxides, glycidyl ether epoxides, and combinations thereof. The curable liquid composition is illuminated with actinic radiation to form a patterned imprint layer disposed over the substrate film. A multilayer data recording assembly is placed over imprint layer. An optical tape made by the method is also provided.

Disclosed herein are aspects of optical tape technology, tape manufacturing, and tape usage. Methods and systems of tape technology disclose optical tape media including: configurations, formulations, markings, and structure; optical tape manufacturing methods, systems, and apparatus methods and systems including: curing processes, coating methods, embossing, drums, testing, tracking alignment stamper strip; optical tape methods and systems including: pick up head adapted for the disclosed optical tape; and optical tape uses including optical storage media devices for multimedia applications

The invention provides an alloy ultraviolet transparent conductive thin film and a preparation method and application thereof. The thin film is an A-doped ZrxSn1-xO2 n-type conductive thin film, and Ais Sb or Nb. According to the alloy ultraviolet transparent conductive thin film, Zr is doped into SnO2, so that the optical band gap of the alloy ultraviolet transparent conductive thin film is successfully increased, and a donor impurity A is doped into SnO2, so that the conductivity of the alloy ultraviolet transparent conductive thin film is successfully improved; the prepared conductive filmhas good permeability to deep ultraviolet and visible light; the conductive film is of a single-phase (100) oriented rutile structure and has good thermal stability, the ultraviolet and visible transmittance exceeds 90%, and the conductivity is good; and the preparation method of the alloy ultraviolet transparent conductive film provided by the invention has the advantages of simple required equipment and operation process, cheap and accessible raw materials, low production cost and favorable practical application prospects, and satisfies the conditions of large-scale industrial production.

Digital optical tape archival storage systems and methods are disclosed. A digital optical tape recorder may simultaneously write data and two or more guide tracks onto a digital optical tape recording medium. A digital optical taper reader may include a camera to capture a two-dimensional image of the digital optical tape recording medium, and an image processor to extract the data from the two-dimensional image.

Methods and apparatus for archival storage of an image are disclosed. The image is converted into one or more bit plane images. Fiducial markers are generated and written onto digital optical tape concurrent with writing the one or more bit plane images onto the digital optical tape.

The invention discloses a dichroscope based on a sandwich-like structure interface and a composite material and a preparation method of the dichroscope. A material A with the refractive index greaterthan 1.8 and a material B with the optical band gap greater than 6.0 eV are deposited simultaneously through electron beam evaporation technology to form the composite material to replace a single high-refractive-index material in a conventional dichroscope film to serve as a high-refractive-index film layer H, and a single low-refractive-index material C serves as a low-refractive-index film layer L; and by controlling the deposition rate of the material A, the deposition rate of the material B and the deposition rate of the material C, a transition interface of a sandwich-like structure is formed between the high-refractive-index film layer and the low-refractive-index film layer, and the transition interface structure serves as an A+B gradient material layer and AA+C gradient material layer. According to the dichroscope, the interface of the high-refractive-index film layer and the low-refractive-index film layer is designed to be the transition interface of the sandwich-like structure, and the interface bonding force, the laser damage threshold value and other performance of the dichroscope are improved on the premise that the spectral performance of a film is not affected.

A groove-monitoring system (30) for imaging an optical tape surface (12) is provided. The optical tape surface (12) includes a plurality of groove patterns (18) embossed thereon. The groove-monitoring system includes an optical sensor (32), a first light source (38) directing a first light beam onto the optical tape surface (12) with a first angle of incidence such that the first light beam is directly reflected from the optical tape surface (12) and imaged by the optical sensor (32). The groove-monitoring system (30) also includes a second light source (40) directing a second light beam onto the optical tape surface (12) with a second angle of incidence such that the second light beam is diffracted from the optical tape surface (12) and imaged by the optical sensor (32) as a diffracted light image. The groove-monitoring system (30) is capable of simultaneously making an electronic image of both the groove pattern and the edges (20, 22) of an optical tape (10), in order to ensure that tape edges (20,22) and groove patterns meet parallelism requirements.

The invention discloses an optical strip which utilizes sunlight to generate power. The optical strip comprises a structure of which the inside is provided with solar cell plates, LED chips, connecting wires, a controller and an accumulator; clearance between the solar cell plates is provided with the LED chip; the LED chip and the solar cell plate are encapsulated together to form a solar cell component; power output by the solar cell component is stored in the accumulator through regulation and control of the controller; and the solar cell component utilizes electroluminescence of the accumulator and a plurality of solar cell components are connected to form the optical strip. The LED chip is directly encapsulated in the solar cell component and radiates; the plurality of solar cell component are connected to form the optical strip so as to save the trouble of external connection of the LED; the shape of the optical strip is more attractive; and a nanometer cell is used to reduce the use number of the other cells and effectively save space.

A method of making stamper plates for an embossing drum for embossing tape media is provided. The method includes forming one or more first stamper plates using a master template, and forming a second stamper plate from one of the one or more first stamper plates such that the second stamper plate and the one first stamper plate have inverse land and groove patterns. Furthermore, the second stamper plate and the one first stamper plate or another of the one or more first stamper plates are useable on the drum to emboss tape media.

An apparatus for driving a tape-shaped optical recording medium, which comprises a supply reel (41) for supplying an optical tape (40), a take-up reel (42) for taking-up the optical tape (40), a friction capstan (43) for driving the optical tape (40) to run to the take-up reel (42) from the supply reel (41) and a running guide member (46) for guiding the optical tape (40) running between the supply reel (41) and the take-up reel (42). The running guide member (46) has a flat portion forming a guide face portion (70) for facing to the optical tape (40) is operative to cause the optical tape (40) to run along the flat portion. Thereby, an area on the guide face portion (70) of the running guide member (46) where an incident position on the optical tape (40) of a light beam is fixed invariably can be stably maintained to be relatively wide.

Disclosed herein are aspects of optical tape technology. A segment (1210) on media (1110) includes tracks (1220) with length (1230). Segments (1210) may be separated by gaps / defects (1310). Within segment (1210), tracks (1220) each exhibit fields of modulated wobble indicative of a physical track address. Tracks (1220) may not line up across gaps (1310). While focused on a particular track and prior to encountering the first gap, servo system (1150) may record the specified physical address of the particular track. Once gap (1310) has passed the optical sensing element (1120), servo system (1150) may command sensing element (1120) to refocus and determine / record the physical track address of the post-gap track it is focused on. Servo system (1150) may then assign a single logical address to the recorded physical addresses.

In an optical tape drive having optical heads for writing data in tracks on an optical tape, each track having an off-track threshold, a system and method are disclosed for off-track write prevention. The system includes multiple actuators, each actuator configured to control a position of an associated optical heads. The system also includes a controller configured to determine a position of each of the optical heads relative to an associated track on the optical tape and to prevent, in response to an event causing an optical heads to have a position outside the off-track threshold of the associated track, only that optical head from writing data to the optical tape and to buffer a stream of data for that optical head for later processing.

The invention relates to the field of optical tapes, in particular to a high-viscosity optical film tape and a manufacturing process thereof. The high-viscosity optical film tape comprises a light release film layer, an optical adhesive layer and a heavy release film layer which are arranged from top to down sequentially, wherein the optical adhesive layer is made of an adhesive, and the adhesive is,prepared from the following components in parts by weight, 30-50 parts of butyl methacrylate, 15-30 parts of ethyl acrylate, 10-20 parts of trimethylopropane trimethacrylate, 3-8 parts of crylic acid, 2-5 parts of melamine formaldehyde resin, 1-4 parts of triethylene tetramine, 1-5 parts of nano silicon dioxide and 0.5-2 parts of initiator. The components of the adhesives coordinate with one other, so that the prepared optical film tape has the advantages of high light transmission, high temperature resistance and high adhesive strength when used for bonding; in addition, the manufacturing process is simple, the production efficiency is high, the product quality is stable, and the overall performance of the high-viscosity optical film tape is excellent.

The invention provides a method and a system for measuring an optical band gap. The method comprises the steps of measuring a to-be-measured sample by adopting an ellipsometer to obtain an ellipsometric data measured value; performing modeling and fitting calculation on the ellipsometric data, judging whether a fitting value obtained through fitting calculation is close to a measured value or not,if the fitting value obtained through fitting calculation is close to the measured value, performing reverse calculation by utilizing dispersion equation parameters obtained through fitting, and acquiring a chromatic dispersion curve of the refractive index and the extinction coefficient of the to-be-measured sample along with the change of the wavelength; acquiring an absorption coefficient of the to-be-measured sample according to the chromatic dispersion curve and an absorption coefficient formula; and solving the optical band gap of the to-be-measured sample according to the absorption coefficient and a Tauc formula. Since the ellipsometer has the features of being high in measurement precision and no requirement on transparency of the substrate material, the measurement of the optical band gap can be precisely realized, and the applicable range of the optical band gap measurement can be greatly expanded; and the method has good measurement effect on the materials such as thin-film material, non-transparent material, multi-layer or complex film structure material and like on the non-transparent substrate or single-side polished substrate.

The invention relates to a 'jump gap' servo mode provided to position an optical tape medium relative to a pickup head so that tracking may be reestablished after gaps in the servo tracks which occur in the pre- and post-amble fields. These gaps arise periodically because of a seam in the drum used to emboss the servo track on the tape medium. Also disclosed herein are other aspects of optical tape technology, tape manufacturing, and tape usage including: configurations, formulations, markings, and structure of the optical tape; manufacturing methods, systems, and apparatus including curing processes, coating methods, embossing, drums, testing, tracking alignment stamper strip; pick up head adapted for the disclosed optical tape; and optical tape uses including optical storage media devices for multimedia applications.

Digital optical tape archival storage systems and methods are disclosed. A digital optical tape recorder may simultaneously write data and two or more guide tracks onto a digital optical tape recording medium. A digital optical taper reader may include a camera to capture a two-dimensional image of the digital optical tape recording medium, and an image processor to extract the data from the two-dimensional image.

The invention discloses a virtual positioning method in optical multi-dimensional parameter measurement, which is applied to an optical measurement system composed of a two-dimensional visual sensor and an area array CCD camera, using a hollow regular tetrahedron as the target of the visual sensor to realize The steps of virtual positioning are: after measurement and calculation, determine a standard triangle on the hollow regular tetrahedron and draw it on the screen, which represents the ideal position of the visual sensor relative to the measured edge; The triangle formed by the light strips on the three edges of the hollow regular tetrahedron represents the actual position of the visual sensor relative to the measured edge; adjust the orientation and coordinates of the visual sensor so that the triangle represented by the light strips represents the actual position and the triangle represents the ideal position At this time, the orientation and coordinates of the vision sensor are determined as its measurement location. Compared with the traditional digital adjustment method, the present invention is intuitive, convenient and has high precision.

The invention discloses an organic-inorganic hybrid perovskite MAPbBr3 film material with a gradient energy band structure. The optical band gap of the MAPbBr3 film material is adjustable from 1.36-2.47eV, wherein MA represents an organic cation CH3NH3+, and the MAPbBr3 film material The thickness of the film is in the range of 40nm‑100nm. The invention also discloses a preparation method of the organic-inorganic hybrid perovskite MAPbBr3 film material with gradient energy band structure.