• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Methods for lens configuration are disclosed. A method includes erasing a lens by heating the lens to a defined erasure temperature and writing a refractive index spatial distribution in the lens using an exposure pattern of directed ultraviolet (UV) light. The lens may be used as an ophthalmic lens or a lens used in industry. The lens comprises a rewritable material, including, for example, liquid crystals. The lens may be erased using heat of a defined temperature. The lens may be rewritten by applying other exposure patterns to the lens using UV light.
    公开号:ES2782400A2
    申请号:ES202090037
    申请日:2019-02-15
    公开日:2020-09-14
    发明作者:Juan Antonio Quiroga；Ignacio Canga；Jose Alonso；Daniel Crespo
    申请人:Indizen Optical Technologies of America LLC；
    IPC主号:
    专利说明:

    [0002] Creation of rewritable lenses
    [0004] BACKGROUND
    [0006] [0001] Field
    [0008] [0002] This disclosure relates to the field of optics. In particular, this description refers to lenses that have modifiable and rewritable characteristics.
    [0010] [0003] Description of Related Art
    [0012] [0004] Ophthalmic lenses are designed to provide corrective optical power to improve vision by correcting aberrations or optical defects of the eye. They increase the quality of life by improving visual performance. Fixed power ophthalmic lenses have been known for years, and technical advances allow them to correct vision errors with greater precision. However, the visual correction required for an individual changes over time due to age-related physiological changes, such as the onset and progression of presbyopia. Additionally, an individual's necessary correction may change due to stress, illness, accidents, medical treatments, environmental conditions, and personal preferences. Therefore, there is a need for lenses that allow the optical power to be varied, either in its total value and / or in the power distribution or placement on the lens.
    [0014] [0005] Similarly, lenses are used in science and industry for many purposes, including light guides, delay plates, beam formers, telescopes, microscopes, and the like. In this case, as with ophthalmic lenses, when there are changing requirements, the lens has always been replaced. Many of these include or require disassembling and reassembling a lens. This leads to increased costs of purchasing a lens that meets the new requirements, as well as removal and reinstallation of the lens, which, depending on the application, may not be easy. Therefore, there is a need for lenses that allow the optical power to be varied, either in its total value and / or in the power distribution or placement on the lens, either independently of an installed location or in an installed state. .
    [0016] DESCRIPTION OF THE DRAWINGS
    [0018] [0006] Figure 1 is a flow chart of actions performed to create and re-record a rewritable lens.
    [0020] [0007] Figure 2 is a flow chart of steps taken to create and re-record a rewritable ophthalmic lens when the prescription changes, including lens erasure.
    [0022] [0008] Figure 3 is a flow chart of actions taken to configure and reconfigure a rewritable ophthalmic lens when a prescription changes.
    [0024] [0009] Figure 4A is a block diagram of liquid crystal in a rewritable lens after initial creation.
    [0026] [0010] Fig. 4B is a graph showing the initial spatial index distribution of the liquid crystal lens in Fig. 4A.
    [0028] [0011] Figure 5A is a block diagram of liquid crystal in a rewritable lens in an intermediate state after application of ultraviolet light to a portion of the lens.
    [0029] [0012] Fig. 5B is a graph showing the spatial index distribution of the liquid crystal lens in Fig. 5A.
    [0031] [0013] Figure 6A is a block diagram of liquid crystal in a rewritable lens after ultraviolet light is applied to a portion of the lens to shape the lens.
    [0033] [0014] Fig. 6B is a graph showing the spatial index distribution of the liquid crystal lens in Fig. 6A.
    [0035] [0015] Figure 7A is a block diagram of liquid crystal in a rewritable lens after heat is applied to the lens to erase the lens.
    [0037] [0016] Fig. 7B is a graph showing the spatial index distribution of the liquid crystal lens in Fig. 7A.
    [0039] [0017] Figures 8A, 8B, 8C and 8D are dark field circular images of exemplary liquid crystal rewritable lenses in setup, blanking, reconfiguration, and blanking, respectively.
    [0041] [0018] Figure 9 is a block diagram showing a device and computing environment used to implement the procedures for creating and re-recording a rewritable lens described in this invention.
    [0043] DETAILED DESCRIPTION
    [0045] [0019] New and innovative applications of liquid crystals can be used to create rewritable lenses to address the changing needs of eyeglass wearers and eyeglass wearers. The process described in this invention details how to manufacture rewritable lenses that allow the reconfiguration of the lens for modification and reuse. The lenses described in this invention allow the reuse of an existing lens. This reuse reduces the physical waste of the product. Furthermore, the rewritable lens described in this invention can be quickly reconfigured or re-recorded, resulting in increased customer satisfaction. For example, if a wearer has lenses made to conform to an ophthalmic prescription, the lenses can be re-engraved to fit the most recent new ophthalmic prescription when the patient's prescription changes. For example, if it is an industrial, laboratory, or technical environment, a lens can be re-recorded to meet new requirements for lens properties.
    [0047] [0020] The procedures presented in this invention are based on the use of liquid crystals. The lenses described in this invention are made of liquid crystals. The term "liquid crystal" is referred to in the present invention as LC. The lens can be constructed from and include both a rewritable material and a passive, unalterable material. Passive material is optional. The rewritable material is made of LC. LC-based materials used for the lenses disclosed in this invention include a polymer dispersed liquid crystal, a polymer stabilized liquid crystal, an encapsulated liquid crystal, a bistable liquid crystal, a bistable polymer dispersed liquid crystal, a bistable liquid crystal polymer stabilized, an encapsulated bistable liquid crystal. The LCs used in preparing the lens described in this invention may be mixtures of LCs having heat reversible exposure-induced polar alignment (EPA). In some implementations, for example, the LCs MLC2132, MLC2171 or MLC2172 marketed by Merck KGaA, based in Darmstadt (Germany) are used; LC QYPDLC-142 and QYTN802 sold by Qingdao QY Liquid Crystal Co., Ltd., based in Shandong, China; or LC 5CB available from SYNTHON Chemicals GmbH & Co. KG, based in Wolfen (Germany). MLC2132, MLC2171, or MLC2172 are LC mixtures that have heat reversible exposure-induced polar alignment (EPA). The QYPDLC-142, QYTN802 and 5CB LCs are mixed with an additional component that adds the EPA property to the LC. The additional component that is added is an LC monomer of High birefringence biphenyl-tolane with high response to UV light. When "non-EPA" LCs such as QYPDLC-142, QYTN802, and 5CB are mixed with biphenyl-tolane LC monomers, EPA activity appears with UV exposure. Examples of these components are the liquid crystal monomers PT3F, PT401 and PT502 sold by LCC Corporation, based in Fujiyoshida City, Japan.
    [0049] [0021] As used herein, the term "recordable" means that the lens can be engraved or shaped with particular optical properties. The term "rewritable" indicates that the lens may have optical properties etched into it, and then the optical properties of the lens may be changed multiple times. The rewritable lenses described in this invention do not require external or physical modifications such as grinding, cutting, or shaping of the lens. The rewritable lenses described in this invention remain stable and maintain the optical properties etched on them at common temperatures and under typical lighting and use conditions. This is distinguished from materials that revert to a previous state or to a state of rest when an energy source is removed. That is, according to the methods described in this invention, after the configuration of a rewritable lens, the optical properties of the lens remain constant and do not change. When using the rewritable lens in ophthalmic lenses, once a rewritable lens has been configured (or reconfigured), the optical properties of the lens remain constant and do not change when a patient wears or uses it. In this example, the ophthalmic lenses can be for spectacles or they can be intraocular lenses. The rewritable lenses described in this invention are particularly useful with implanted intraocular lenses, as the need for additional surgery is alleviated by the ability to achieve reconfiguration of the rewritable intraocular lens in the eye. When the rewritable lens is used in a technical environment or as an 'in situ' lens such as in cameras, microscopes, telescopes, headlights, waveguides, delay plates and others, after it has been configured (or reconfigured). ) a rewritable lens, the optical properties of the lens remain constant and do not change when used in your technical environment or on-site location.
    [0051] [0022] Rewritable lenses can be recorded or re-recorded when exposed to a visible or non-visible light exposure pattern. In one embodiment, UV light is used. Exposure is the product of irradiance over time, and the change in refractive index is a function of the exposure at each point. The relationship between exposure and refractive index is calibrated for the particular LC material used. The exposure pattern includes combinations of UV irradiance and time lengths for a plurality of locations on the lens. For example, an exposure H = 10 J / cm2 can be obtained using an irradiance E = 10 W / cm2 for a time t = 1 second or, in another example, the exposure can be obtained by an irradiance E = 1 W / cm2 for a time t = 10 seconds. In both examples, the exposure H = E * t = 10 J / cm2. Additional examples are explained below.
    [0053] [0023] Rewritable lenses can fade (ie return to their original or transparent state) when exposed to heat. To erase the lens using heat, the lens must reach a defined erase temperature to erase. That is, the lens heats up to the defined erasing temperature. The defined erase temperature is a single value in the range of 70 to 130 degrees centigrade (inclusive). For example, in some embodiments, the defined erase temperature is 70, 92, 130, 75, 86, or 78 degrees centigrade. To reach this defined temperature, the lens can be heated in an oven or exposed to hot air, as long as the lens reaches the required defined erasure temperature. In addition to the hot air, infrared radiation can be used to heat the lens to the defined erasure temperature.
    [0055] [0024] The methods described in this invention use liquid crystal (LC) -based material to create and re-engrave lenses and, in particular, Gradient Index or GRIN lenses, changing the spatial distribution of the refractive index. The optical properties that can be etched or configured on a lens according to techniques described in this invention include refractive index, birefringence, and dioptric power, including sphere, cylinder, axis orientation, prism, and other vision-correcting attributes. These optical properties can be graduated, staggered, or positioned on the lens, and can affect all or only a portion of a viewing or wearing region of the lens. If more than one optical property can be recorded, each such property can be recorded (and re-recorded) in one or more regions of the lens, and there may be various combinations of the recordable optical properties in different regions of the lens. All changes are made without physically modifying the outer surface or the outer parts of the lens. Instead, the refractive index of the lens material is modified through the use of a UV beam.
    [0057] Referring now to Figure 1, a flow chart of actions in a procedure for creating and configuring lenses is shown. A lens is first obtained or created, as shown in block 110. Next, a usable blank lens is created, as shown in block 112. This can be accomplished by using heat or ultraviolet light to erase or clean the lens. . For example, in one implementation, a lens is created by placing LC material between sheets of quartz or in a quartz, glass, or plastic container. The container is configured and sized to suit a particular ophthalmic or technical application. The lens itself can be created according to the procedures described in US patent publication US20160377886. The LC material is then aligned to form a homogeneous cell. Alignment is important. In one embodiment, a magnetic field is applied to align the LC material. This produces a homogeneous cell with the director vector aligned horizontally with azimuth and polar angles 0 = 0 and 0 = 90 °, respectively, as shown in Figure 4A.
    [0059] [0026] The lens parameters are obtained, as shown in block 114. The lens parameters include near power, far power, and prism values, and may also additionally include one or more lens design values for the progression profile, corridor length, position of the beginning of a progression, position of the end of the progression, distribution of fields in distant and near regions, distribution of astigmatism in astigmatic lobes, maximum value of unwanted astigmatism, distribution of inset, and others. In an ophthalmic implementation, the lens parameters can be provided and / or derived from an ophthalmic lens prescription. The lens is configured based on the lens parameters by recording a spatial distribution of the refractive index by exposing the lens to an exposure pattern based on the lens parameters, as shown in block 116. The exposure pattern it can be recorded, in one embodiment, using ultraviolet (UV) light. The lens can be reconfigured in this same way, such that a current refractive index can be altered, modified, or otherwise changed, to a greater or lesser extent, to suit new requirements, applying UV light according to an exposure pattern to set the lens according to a different refractive index. The lens can be erased using heat, as shown at block 118. In other embodiments, infrared radiation can be used to heat the lens.
    [0061] [0027] With reference to Figure 2, a flow chart of actions taken to create and re-record a rewritable ophthalmic lens is shown when the prescription changes, including lens erasure. This procedure can be used in technical or other lenses when the demands or requirements of the refractive index of the lens change. When used in the ophthalmic context, the rewritable lens can be used as spectacle lenses, face shields, eye shields, goggles, insert lenses, respirator lenses, helmet lenses, intraocular lenses, refractive lenses, and diffractive lenses. Referring to FIG. 2, the patient's ophthalmic grade information is received, as shown at block 210. The ophthalmic grade can be received on paper and the information can then be entered into a computer system or can be transmitted by computer communication. The lens parameters for graduation are then generated, as shown in block 212. The lens is then recorded according to the parameters of the patient's ophthalmic prescription, as shown in block 214. Specifically, a Spatial distribution of the index of refraction in the lens when exposing the lens to an exposure pattern as a function of the lens parameters. The exposure pattern is generated using ultraviolet (UV) light. Usually, at some later time such as at an annual or other ophthalmic exam, an updated or modified ophthalmic graduation is obtained from the patient. The updated or modified ophthalmic prescription information is received from the patient, as shown in block 220. The lens parameters for the modified and updated prescription are generated based on the modified and updated ophthalmic prescription, as shown in the block 222. In this embodiment, the lens is erased, as shown in block 230. Erasing is accomplished with heat or infrared radiation. The lens is then re-recorded based on the parameters for the patient's updated and modified ophthalmic prescription, as shown in block 232. Specifically, a spatial distribution of the refractive index is recorded on the lens by exposing the lens to a Exposure pattern based on lens parameters derived from the patient's updated and modified ophthalmic prescription parameters. The exposure pattern is generated using ultraviolet (UV) light.
    [0063] Referring now to Figure 3, a flow chart of actions taken to configure and reconfigure a rewritable ophthalmic lens is shown when the prescription changes. This same procedure can be used in technical or other lenses when the demands or requirements of the refractive index of the lens are modified. Referring to Figure 3, the patient's ophthalmic grade information is received, as shown at block 310. The ophthalmic grade can be received on paper, and the information can then be entered into a computer system or transmitted over computer communication. Next, the lens parameters for prescription are generated, as shown in block 312. The lens is then configured with UV light based on the lens parameters for the patient's ophthalmic prescription, as shown at block 314. Specifically, a spatial distribution of refractive index is recorded on the lens by exposing the lens to an exposure pattern as a function of lens parameters. The exposure pattern is recorded with ultraviolet (UV) light. Usually, at some later time such as at an annual or other ophthalmic exam, an updated or modified ophthalmic graduation is obtained from the patient. The updated or modified ophthalmic prescription information is received from the patient, as shown in block 320. The lens parameters for the modified and updated prescription are generated based on the modified and updated ophthalmic prescription, as shown in the block 322. In this embodiment, reconfiguration parameters are generated based on evaluating the difference between the modified updated prescription and the original or previous prescription, as shown in block 330. The lens is reconfigured using UV light as a function of reconfiguration parameters. This is accomplished with heat or using UV light. The lens is reconfigured by recording limited portions of a spatial distribution of refractive index on the lens by exposing the lens to an exposure pattern of the limited portion based on the reconfiguration parameters. The exposure pattern of the limited portion is recorded using ultraviolet (UV) light.
    [0065] The lenses described in this invention include LC cells constructed using UV grade fused silica (quartz) sheets manufactured by AdValue Inc. The UV light source can be any high power plasma light such as, for example, the model HPLS343 high power plasma light source manufactured by Thorlabs Inc, based in Newton, New Jersey. The white light spectrum produced by the lamp in high plasma light can be filtered. In one configuration, light is filtered with a model FGUV11M UV bandpass filter (manufactured by Thorlabs Inc, based in Newton / New Jersey), which has a bandpass region of 275-375 nm and a maximum transmission at 325 nm. Source Plasma light is focused so that the typical irradiance in the LC lens is E = 100 µW / cm 2.
    [0067] [0030] To record on the lens, a UV source is used which emits below 385 nm with sufficient optical power. The smaller the wavelength, the more efficient the etching procedure. A wavelength of 365 nm is recommended in some implementations because it is the smallest wavelength that solid state emitters can achieve, which have lower cost and higher optical power. For example, devices such as the Luminus CBM-40-UV LED manufactured by Luminus, Inc., based in Sunnyvale, California, with an emission peak of 365 nm and a bandwidth of about 30 nm can be used. This UV LED has an optical output power of 12 W which, when focused, allows an irradiance of E = 2 W / cm 2.
    [0069] [0031] In one version of the method, with respect to exposures and times, when using liquid crystal separation cells of 50 filled with MLC-2132, an exposure of H = 100-120 J / cm2 is applied to rotate the LC director vector from 90 to 0 °, designated H90. This rotation implies a change in the refractive index from ne to n0 and is the basis of the recording procedure. The value for H90 determines the time required to record the desired refractive index on a sample. In an example implementation, when H90 = 100 J / cm2, for a system consisting of the UV band pass filter UV plasma light source (for example, the Thorlabs configuration described above) with an irradiance of E = 0 , 1 W / cm 2, the recording procedure requires
    [0070] a time t = q ° J / ^ 2 = 1000 s at a point. In another example implementation, using
    [0071] a UV LED source (for example, the Luminus configuration described above) with a
    [0072] irradiance of E = 2 W / cm 2, a time of t is required
    [0073] recording procedure.
    [0075] Referring now to Figures 4A, 5A, 6A and 7A, the condition of the Gradient Index LC (GRIN) lens is shown in the steps of the procedures shown and described in Figures 1, 2 and 3 Initially, having created the lens as in block 110, a usable blank lens is created as shown in block 112 of Figure 1. The LC cell is constructed using a 410 LC material confined between two sheets of quartz 412 coated with a PMMA alignment layer 414. This lens in its initial state is shown in FIG. 4A. In the example shown, the polar angle of the LC director vector is 90 ° (marked d) for all positions and the effective refractive index is neff = ne for the entire LC lens. The polar angle of the LC director vector is zero for the lens. The effective index is ne in this example because linearly polarized light is used with azimuth oriented in the X direction (indicated by arrow 416 showing the state of polarization). For embodiments using liquid crystal dispersions, polarized light is not necessary, but natural light is used. Fig. 4B is a graph showing the distribution of the spatial index 420 of the liquid crystal lens in Fig. 4A. The initial distribution of the spatial index n0 ( X ) is constant, since the lens is blank.
    [0077] Referring now to Figure 5A, a liquid crystal block diagram is shown in a rewritable lens after application of ultraviolet light to a portion of the lens in an intermediate state. By exposing the marked section of the lens to UV light with the H1 exposure, the polar angle of the LC director vector in the irradiated area of the lens changes such that the refractive index changes in that area to an intermediate value n ( 0). That is, in the section 530 exposed to ultraviolet light of the LC material 510, the polar angle of the directing vector d changes from 90 to a given value of 0. However, the index of the section located to the left and to the right of the irradiated area 530 remains the same as in the initial state. The result is an LC lens with a space-dependent refractive index nt ( X) reflected in the graph shown in Figure 5B, which constitutes a gradient index lens (GRIN). With proper index distribution, a desired lens prescription can be created using this procedure.
    [0079] Referring now to FIG. 6A, a liquid crystal block diagram is shown in a rewritable lens after ultraviolet light is applied to a portion of the lens to configure the lens. When the exposure is large enough, H2, the LC director polar angle can reach 0 ° and the effective refractive index for the irradiated area changes to nerr = no. This will be the maximum change for the index of refraction. As shown in FIG. 6A, there is a refractive index of n0 inside the irradiated area 630 of the LC material 610 and ne outside. The new spatial distribution of the refractive index n2 ( X) is different from n1 ( X), and the GRIN lens generated in this way will be different from that shown in Figure 5A. In this way, the lens is configured as described in block 116 of Figure 1 and block 232 of Figure 2. Figure 6B is a graph showing the distribution of spatial index 620 of the liquid crystal lens in Figure 6A. The distribution of the spatial index 620 is the refractive index n2 ( X ).
    [0081] Referring now to FIG. 7A, a block diagram of a liquid crystal cell in a rewritable lens is shown after heat is applied to the lens to erase the lens. When the lens is heated to a high enough temperature for a long enough time as indicated in the shaded area 730, the polar angle returns to 90 ° and the refractive index is erased and the lens returns to its initial state, as shown in the lC 710 with a spatially constant index of refraction. This is how erasure is accomplished in blocks 118 and 230 of Figures 1 and 2. Regarding erasure times, in an example implementation, for a lens with 50-pitch LC cells, 10 can be used hours at 75 ° C. In some embodiments, higher temperatures will accelerate erasure; however, care must be taken not to overheat the lens. Fig. 7B is a graph showing the distribution of the spatial index 720 of the liquid crystal lens in Fig. 7A. The distribution of the spatial index n0 ( X) is constant, since the lens is blank.
    [0083] [0036] Figures 8A, 8B, 8C and 8D are dark-field circular images of example GRIN liquid crystal lenses, created after configuration, erasure, reconfiguration, and erasure of a lens corresponding to the results of actions performed on the blocks 116, 118, 116 and 118 of Figure 1, respectively, or in blocks 214, 230, 232 and 230 of Figure 2, respectively. These images show the impact and effectiveness of the procedures described in this invention. For example, the GRIN lens depicted in Figures 8A, 8B, 8C and 8D was created using a 51 spacing LC cell and filled with LC MCL2132 using a PMMA alignment layer. The GRIN lens was recorded using 365nm UV light. An exposure of H = 132 Jcm ~ 2 was used for the first state of the GRIN lens shown in Figure 8A and of H = 106 Jcm ~ 2 for the second recorded state of the GRIN lens shown in Figure 8C. The first erasing operation resulting in the state of the lens shown in Figure 8B was performed by heating the LC lens for 10 hours at 75 ° C, and the second erasing operation resulting in the condition shown in the figure 8D was made by heating the lens at 75 ° C for 10 hours.
    [0085] [0037] The procedures described above in Figures 1, 2 and 3 can be accomplished or controlled using a computing device such as a personal computer or a workstation which can be coupled to a network for communication. The computing device can calculate the parameters, refractive indices, exposure patterns, and temperature to configure the rewritable lens. The computing device can calculate the measurements necessary to control the equipment used to record the rewritable lens and can also be used to control the equipment used to record the refractive indices of the rewritable lenses. The computing device can monitor UV light and heat used to record, re-record, configure, reconfigure, and erase rewritable lenses.
    [0086] Referring now to FIG. 9, there is shown a drawing of a computing environment 900 in which the procedures can be implemented. The procedures described in this invention can be implemented in software that is stored and executed on a computing device. The software can control the time, temperature, angles, UV light and other aspects and characteristics of the procedures described. A computing device, as used in this invention, refers to any device with a processor, memory, and storage device that executes instructions including, but not limited to, personal computers, 916 desktops, 910 server computers, minicomputers, mainframes, supercomputers, workstations, mobile devices such as computer tablets and smartphones, portable computers and 914 laptops. These computing devices can run an operating system including, for example, variations of the Microsoft Windows operating systems, Linux, Android, and Apple Mac, and can include or run virtual machines.
    [0088] [0039] The software is stored on a machine-readable storage medium on a storage device included with or otherwise coupled or connected to a computing device. That is, the software is stored on an electronic, machine-readable medium. These storage media include, for example, magnetic media such as hard drives; optical media such as compact discs (CD-ROM and CD-RW), digital versatile discs (DVD and DVD ± RW), and BLU-RAY; silicon-based storage, which includes solid state drives (or silicon storage devices) (SSDs) and flash memory cards; and other magnetic, optical and silicon storage media. As used in this invention, a storage device is a device that allows reading and / or writing to a storage medium. Storage devices include hard drives, SSDs, DVD drives, flash memory devices, and others.
    [0090] [0040] The computing device may include software to provide the functionality and features described in this invention. The computing device may include one or more of the following: logic arrays, memories, analog circuits, digital circuits, software, firmware, and processors such as microprocessors, field programmable logic gate arrays (FPGAs), application-specific integrated circuits (ASICs). ), programmable logic devices (PLD) and programmable logic matrices (PLA). The components of the computing device may include specialized units, circuitry, software, and interfaces to provide the functionality and features described in this invention. The procedures, functionality, and features described in this invention are fully or partially incorporated into the software that operates on a computing device and may be in the form of firmware, an application program, an applet (eg, a Java applet) , a browser plug-in, a COM object, a dynamic link library (DLL), a script, one or more subroutines, an operating system component or service, or a combination of these. Both hardware and software and their functions can be distributed in such a way that some components are performed by one computing device and others by other computing devices. The computing device may be, include, or be coupled directly or via a network 930 with specialized computing devices and programs, such as database programs and one or more database servers 920. The database servers may store information about the configuration of the lenses, information about the prescription of the lenses, parameters of creation of the lenses, etc. Network 930 can be a local area network (LAN), a wide area network (WAN), a combination of these, and it can be the internet.
    [0092] [0041] Final comments
    [0094] [0042] Throughout this description, the embodiments and examples shown are to be construed as exemplary and not as limitations on apparatus and procedures. described or claimed. Although many of the examples presented in this invention involve specific combinations of process actions or system elements, it should be understood that those actions and those elements can be combined in other ways to achieve the same objectives. When it comes to flow charts, additional and fewer steps can be performed, and the steps shown can be combined or refined to accomplish the procedures described in this invention. Actions, elements, and features discussed only in relation to one embodiment are not intended to be excluded from a similar role in other embodiments.
    [0096] [0043] As used in this invention, "plurality" means two or more. As used in this invention, a "set" of elements can include one or more of such elements. As used in this invention, either in the written description or in the claims, the terms "comprising", "including", "carrying", "having", "containing", "involving" and the like are to be understood as open, that is, meant to include, but are not limited to. Only the transitional phrases "consisting of" and "consisting essentially of", respectively, are closed or semi-closed transitional phrases with respect to the claims. The use of ordinal terms such as "first", "second", "third", etc., in claims to modify one element of claim does not by itself connote any priority, precedence or order of one element of claim over another or the temporal order in which the actions of a procedure are performed, but are simply used as labels to distinguish a claim element that has a certain name from another element that has the same name (except for the use of the ordinal term) for distinguish the elements of claim. As used in this invention, "and / or" means that the listed items are alternatives, but the alternatives also include any combination of the listed items.
    权利要求:
    Claims (22)
    [1]
    1. A procedure for the configuration of lenses comprising:
    erasing a lens by heating the lens to a defined erasing temperature;
    record a first spatial distribution of refractive index on the lens using a first directed ultraviolet light exposure pattern.
    [2]
    2. The lens shaping method of claim 1 wherein the lens comprises a rewritable material.
    [3]
    The method for the lens configuration of claim 2 wherein the rewritable material is selected from the group including a liquid crystal, a polymer dispersed liquid crystal, a polymer stabilized liquid crystal, an encapsulated liquid crystal, a bistable liquid, a polymer dispersed bistable liquid crystal, a polymer stabilized bistable liquid crystal, an encapsulated bistable liquid crystal.
    [4]
    The method for shaping the lenses of claim 1 further comprising
    record a second spatial distribution of the refractive index on the lens using a second exposure pattern, where the second refractive index is different from the first refractive index.
    [5]
    The method for the lens configuration of claim 4 wherein the first refractive index spatial distribution corresponds to a first refractive power distribution and the second refractive index spatial distribution corresponds to a second power distribution.
    [6]
    The method for the lens configuration of claim 4 wherein the first spatial distribution of the refractive index corresponds to a first ophthalmic graduation of a patient and the second spatial distribution of the refractive index corresponds to a second ophthalmic graduation of a patient.
    [7]
    7. The method of lens shaping of claim 2 wherein the lens further comprises a passive material.
    [8]
    The lens shaping method of claim 1 wherein the lenses are selected from the group including spectacle lenses, face shields, eye shields, goggles, insert lenses, respirator lenses, helmet lenses, lenses intraoculars, refractive lenses and diffractive lenses.
    [9]
    The method for shaping the lenses of claim 1 wherein the first exposure pattern has a spatial distribution and a temporal distribution.
    [10]
    10. A procedure for the creation and configuration of rewritable lenses comprising:
    create a rewritable lens from a specialized material that includes liquid crystals
    engrave a first spatial distribution of refractive index on the rewritable lens using a first UV light exposure pattern
    erase the refractive index by heating the rewritable lens to a defined erase temperature.
    [11]
    The method for creating and configuring rewritable lenses of claim 10 further comprising
    engraving a second spatial distribution of the refractive index on the rewritable lens using a second UV light exposure pattern, where the second refractive index is different from the first refractive index.
    [12]
    12. The method for creating and configuring rewritable lenses of claim 10 wherein the defined erasing temperature is 70 to 130 degrees centigrade, inclusive.
    [13]
    13. The method for creating and configuring rewritable lenses of claim 10 wherein the first spatial distribution of the refractive index corresponds to a first refractive power distribution and the second spatial distribution of the refractive index corresponds to a second power distribution .
    [14]
    The method for creating and configuring rewritable lenses of claim 10 wherein the first spatial distribution of the refractive index corresponds to a first ophthalmic graduation of a patient and the second spatial distribution of the refractive index corresponds to a second ophthalmic graduation of a patient.
    [15]
    The method for creating and configuring rewritable lenses of claim 10 wherein the liquid crystals include at least one selected from the group including a liquid crystal, a polymer dispersed liquid crystal, a polymer stabilized liquid crystal, a encapsulated liquid crystal, a bistable liquid crystal, a polymer dispersed bistable liquid crystal, a polymer stabilized bistable liquid crystal, an encapsulated bistable liquid crystal.
    [16]
    16. The method for creating and configuring rewritable lenses of claim 10 wherein the rewritable lens further comprises a passive material.
    [17]
    17. The method for creating and configuring rewritable lenses of claim 10 wherein the creation includes applying a magnetic, electric or electromagnetic field to the rewritable lens.
    [18]
    The method for creating and configuring rewritable lenses of claim 10 wherein the rewritable lenses are selected from the group including spectacle lenses, face shields, eye shields, goggles, insert lenses, respirator lenses, lenses for helmets, intraocular lenses, refractive lenses and diffractive lenses.
    [19]
    19. The method for creating and configuring rewritable lenses of claim 10 wherein the first exposure pattern has a spatial distribution and a temporal distribution.
    [20]
    The method for creating and configuring rewritable lenses of claim 10 wherein the erasure is achieved by heating directed to a specific region of the rewritable lens.
    [21]
    21. The method for creating and configuring rewritable lenses of claim 10 wherein heating is achieved by applying infrared radiation for a defined period of time.
    [22]
    22. The method for creating and configuring rewritable lenses of claim 10 wherein heating is achieved by placing the rewritable lens in an oven for a defined period of time.
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    同族专利:
    公开号 | 公开日
    EP3756041A4|2021-12-01|
    DE112019000878T5|2020-11-05|
    EP3756041A1|2020-12-30|
    GB202011471D0|2020-09-09|
    JP2021514072A|2021-06-03|
    US10698231B2|2020-06-30|
    WO2019164772A1|2019-08-29|
    CN111771154A|2020-10-13|
    DE112019000878B4|2021-11-04|
    US20190258080A1|2019-08-22|
    GB2583866A|2020-11-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS60179825A|1984-02-27|1985-09-13|Hitachi Ltd|Display device|
    US4795248A|1984-08-31|1989-01-03|Olympus Optical Company Ltd.|Liquid crystal eyeglass|
    AT178645T|1991-05-02|1999-04-15|Univ Kent State Ohio|LIQUID CRYSTAL LIGHT MODULATION DEVICE AND MATERIAL|
    JP3102970B2|1993-07-28|2000-10-23|シャープ株式会社|Information display device and method of manufacturing the same|
    KR0182876B1|1996-01-09|1999-05-01|구자홍|Method for controlling pretilt direction for lcd cell|
    US6619799B1|1999-07-02|2003-09-16|E-Vision, Llc|Optical lens system with electro-active lens having alterably different focal lengths|
    CN1225509C|2001-02-19|2005-11-02|捷时雅株式会社|Radiation-sensitive composition capable of having refractive index distribution|
    SG172726A1|2006-06-23|2011-07-28|Pixeloptics Inc|Electronic adapter for electro-active spectacle lenses|
    AR064986A1|2007-01-22|2009-05-06|Pixeloptics Inc|CHOLESTERIC LIQUID CRYSTAL MATERIAL IN ELECTROACTIVE LENS|
    WO2014172712A2|2013-04-19|2014-10-23|The Regents Of The University Of Colorado|Rewriteable aberration-corrected gradient-index intraocular lenses|
    US20180284482A1|2014-11-07|2018-10-04|Ep Global Communications, Inc.|Method and apparatus for an adaptive focus lens|
    CN107077009B|2015-05-20|2019-11-15|Rx视觉股份有限公司|Method for modifying the adjustable lenticular refractive power of light|
    US9726907B2|2015-06-23|2017-08-08|Indizen Optical Technologies, S.L.|Rewritable lens and method of manufacturing|
    法律状态:
    2020-09-14| BA2A| Patent application published|Ref document number: 2782400 Country of ref document: ES Kind code of ref document: A2 Effective date: 20200914 |
    优先权:
    申请号 | 申请日 | 专利标题
    US15/899,999|US10698231B2|2018-02-20|2018-02-20|Creating rewritable lenses|
    PCT/US2019/018342|WO2019164772A1|2018-02-20|2019-02-15|Creating rewritable lenses|
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