WO2022123915A1 - 眼鏡レンズの加工方法及び眼鏡レンズの加工プログラム - Google Patents
眼鏡レンズの加工方法及び眼鏡レンズの加工プログラム Download PDFInfo
- Publication number
- WO2022123915A1 WO2022123915A1 PCT/JP2021/038553 JP2021038553W WO2022123915A1 WO 2022123915 A1 WO2022123915 A1 WO 2022123915A1 JP 2021038553 W JP2021038553 W JP 2021038553W WO 2022123915 A1 WO2022123915 A1 WO 2022123915A1
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- WIPO (PCT)
- Prior art keywords
- lens
- spectacle lens
- thickness
- frame
- processing
- Prior art date
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- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 111
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000008569 process Effects 0.000 claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims description 61
- 239000011521 glass Substances 0.000 description 13
- 230000005499 meniscus Effects 0.000 description 9
- 238000003860 storage Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241001422033 Thestylus Species 0.000 description 1
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- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
- G02C7/101—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having an electro-optical light valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
- B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
- B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C1/00—Assemblies of lenses with bridges or browbars
- G02C1/10—Special mounting grooves in the rim or on the lens
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/10—Electronic devices other than hearing aids
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C13/00—Assembling; Repairing; Cleaning
- G02C13/003—Measuring during assembly or fitting of spectacles
Definitions
- the present invention relates to a spectacle lens processing method and a spectacle lens processing program.
- the spectacle lens is processed into a contour shape corresponding to the frame (ball shape processing), and the spectacle lens is assembled to the frame.
- lens-shaped processing a technique for processing the peripheral portion of the spectacle lens with high accuracy and a technique for efficiently processing the peripheral portion have been proposed (for example, Patent Document 1).
- an electronic dimming spectacle in which an electronic element is provided on the surface or inside of the spectacle lens and the optical characteristics (light transmittance, color, etc.) are changed by changing the state of the electronic element (for example, Patent Document 2).
- Examples of electronic elements used in electronic dimming glasses include electrochromic elements (EC elements).
- the edge thickness of the peripheral portion of the lens is not constant in the lens that has been spherically processed into an outer shape corresponding to the non-circular frame.
- eyeglasses that hold the bevel of the outer peripheral part of the lens on the frame it is less likely to be restricted by the edge thickness when assembling the lens to the frame, and the peripheral part of the lens partially protrudes in the front-back direction with respect to the rim of the frame. In many cases, there is no problem.
- the variation in the edge thickness of the lens greatly affects the holding property and the assembling property of the lens by the frame. ..
- the frame itself of the lens is restricted, and it is required to deal with it.
- An object of the present invention is to provide a spectacle lens processing method and a spectacle lens processing program that enable the spectacle lens to be easily assembled to a frame without being restricted by the thickness of the peripheral portion of the lens in order to solve the above problems. And.
- the present invention is a method for processing a spectacle lens, which has an electronic element that overlaps with an optical element and supplies electric energy to the electronic element through a terminal portion arranged on one surface in the front-rear direction to obtain a dimming effect.
- the inside dimension information of the holding part in the frame having the holding part that holds the peripheral part by sandwiching it from the front and back is acquired, and the thickness information of the peripheral part of the spectacle lens processed into the outer shape corresponding to the frame is acquired, and the inside of the holding part is acquired.
- Based on the size information and the thickness information of the peripheral edge of the spectacle lens an interference region of the peripheral edge of the spectacle lens that does not fit in the holding portion is determined, and the other surface of the spectacle lens opposite to one surface is determined. Performs thickness adjustment processing to remove the interference region.
- one surface of the spectacle lens on which the terminal portion is arranged is a convex surface and the other surface on which the thickness adjustment process is performed is a concave surface.
- the thickness adjustment process it is preferable to remove only the portion of the radial direction of the spectacle lens that overlaps with the holding portion. In other words, it is preferable to maintain the shape of the other surface of the spectacle lens in the region on the inner diameter side of the holding portion.
- the present invention also has a spectacle lens in a spectacle lens processing program that has an electronic element that overlaps with an optical element and supplies electric energy to the electronic element through a terminal portion arranged on one surface in the front-rear direction to obtain a dimming effect.
- the peripheral edge of the spectacle lens processed into an outer shape corresponding to the frame by having the control unit that controls the processing of the spectacle lens acquire the internal dimension information of the holding portion in the frame having the holding portion that holds the peripheral portion of the spectacle lens by sandwiching it from the front and back.
- the thickness information of the portion is acquired, and based on the internal dimension information of the holding portion and the thickness information of the peripheral portion of the spectacle lens, the interference region of the peripheral portion of the spectacle lens that does not fit in the holding portion is determined, and one of the spectacle lenses is determined.
- the other surface opposite to the surface is subjected to thickness adjustment processing to remove the interference region.
- a spectacle lens it is possible to easily assemble a spectacle lens to a frame having a holding portion that sandwiches and holds the peripheral portion of the spectacle lens from the front and back without being restricted by the thickness of the peripheral portion of the lens.
- the electronic dimming spectacle 10 shown in FIG. 1 includes a spectacle lens processed (manufactured) by applying the present invention.
- This spectacle lens is an electronic dimming lens in which a lens which is an optical element and an electronic element for dimming are combined, and is referred to as a dimming lens 11 in the following description.
- the electronic photochromic glasses 10 are configured by assembling a pair of left and right photochromic lenses 11 to the frame 12.
- the electronic dimming glasses 10 include a dimming control unit (not shown), a power supply, and a dimming operation unit.
- the electronic light control lens 11 is controlled by the dimming control unit.
- the energization control to the element is performed, and the dimming effect of the dimming lens 11 can be obtained.
- the dimming control unit may change the dimming effect (light transmittance) of the dimming lens 11 in a plurality of stages according to the operation of the dimming operation unit.
- the frame 12 has a rim assembly 13 that holds a pair of left and right photochromic lenses 11, and a pair of temples 14 that are connected to the rim assembly 13.
- the rim assembly 13 has a configuration in which the left rim portion 13A holding the light control lens 11 for the left eye and the right rim portion 13B holding the light control lens 11 for the right eye are connected by a central bridge 13C. ..
- the left rim portion 13A and the right rim portion 13B each have a configuration in which the peripheral edge of the opening for exposing the photochromic lens 11 is surrounded in an annular shape, and the annular portion (holding portion 17 described later) surrounds the peripheral edge portion of the photochromic lens 11. To hold.
- Each temple 14 is connected to the left rim portion 13A and the right rim portion 13B near the left and right ends on the opposite side of the bridge 13C.
- the connecting portion of each temple 14 has a hinge structure, and each temple 14 is foldable with respect to the rim assembly 13.
- the rim assembly 13 is composed of two members, a front rim part 15 and a rear rim part 16 which are divided in the front-rear direction.
- the front rim part 15 is located on the front side
- the rear rim part 16 is located on the rear side
- the peripheral edge portion of the photochromic lens 11 is held by the front rim part 15 and the rear rim part 16 in a form of being sandwiched from the front-rear direction.
- the front rim part 15 has a front wall portion 15a constituting the front portion of the rim assembly 13, and a peripheral wall portion 15b protruding rearward from the peripheral edge of the front wall portion 15a.
- the peripheral wall 15b is provided on substantially the entire peripheral edge of the front rim part 15.
- the rear rim part 16 has a rear wall portion 16a constituting a rear surface portion of the rim assembly 13, and a protrusion 16b protruding forward from the rear wall portion 16a.
- the protrusion 16b is provided only in the vicinity of the left end of the left rim portion 13A, the vicinity of the right end of the right rim portion 13B, and the vicinity of the bridge 13C among the rear rim parts 16.
- the front end of the protrusion 16b abuts on the rear surface of the front wall portion 15a, and the relative positional relationship between the front rim part 15 and the rear rim part 16 in the front-rear direction is determined. That is, the protrusion 16b functions as a spacer that determines the front-rear distance between the front wall portion 15a of the front rim part 15 and the rear wall portion 16a of the rear rim part 16.
- the rear wall portion 16a has an outer shape that fits inside the peripheral wall portion 15b, and the peripheral wall portion 15b surrounds the outside of the rear wall portion 16a so that the front rim parts 15 and the rear rim parts 16 in the vertical and horizontal directions are formed. The relative positional relationship of is determined.
- the front rim part 15 and the rear rim part 16 each have a pair of left and right openings for exposing the photochromic lens 11.
- the front wall portion 15a and the rear wall portion 16a are formed with an inner edge portion 15c and an inner edge portion 16c surrounding these openings (see FIG. 3).
- the holding portion 17 is composed of the 15b and the rear wall portion 16a.
- the space surrounded on three sides by the holding portion 17 having a concave cross section is the lens holding space P.
- the lens holding space P is an annular groove portion (inner peripheral groove) that opens toward the inner peripheral side of the left rim portion 13A and the right rim portion 13B.
- the lens holding space P of the left rim portion 13A and the lens holding space P of the right rim portion 13B communicate with each other at the location of the bridge 13, and the conductive member 20 described later is arranged through the communication portion (see FIG. 2). ..
- the front rim part 15 and the rear rim part 16 are formed as separate parts and are fixed to each other in the manufacturing process of the electronic dimming glasses 10 to form the rim assembly 13.
- screws 18 (FIGS. 1 and 2) are used as means for fixing the front rim parts 15 and the rear rim parts 16.
- the front rim part 15 is provided with a screw portion 15d into which the screw 18 is screwed
- the rear rim part 16 is formed with a through hole 16d at a position corresponding to the screw portion 15d. ing.
- the front rim part 15 and the rear rim part 16 are fixed to each other by inserting the screw 18 into the through hole 16d from the rear and screwing it into the screwed portion 15d and applying a predetermined tightening torque.
- the vicinity of the connection position of the temple 14 of the left rim portion 13A and the right rim portion 13B is fastened and fixed by the screw 18, but the position of the screw fixing is not limited to this.
- a fixing means adheresive or the like
- a conductive member 20 (see FIGS. 2 and 3) is arranged inside the rim assembly 13. Further, although not shown, a power supply and a dimming control unit are provided inside one of the pair of temples 14 (the temple 14 on the right side in this embodiment).
- the conductive member 20 electrically connects the electrode on the photochromic lens 11 side (details will be described later) and the power supply in the temple 14.
- the conductive member 20 is a flexible sheet-like member, and is specifically composed of a flexible printed substrate or the like. As shown in FIG. 2, the conductive member 20 is attached to the rear surface side of the front wall portion 15a.
- the conductive member 20 is fixed to the front rim part 15 by means such as double-sided tape or an adhesive.
- the temple 14 and the bridge 13C are connected to the positions near the upper edges of the left rim portion 13A and the right rim portion 13B.
- the conductive member 20 has an elongated shape extending in the left-right direction along the upper edge portion of the rim assembly 13. More specifically, as shown in FIG. 3, the conductive member 20 has a pair of left and right chevron portions 20a shaped along the upper edges of the left rim portion 13A and the right rim portion 13B, and a connecting portion having a shape along the bridge 13C. It is connected by 20b.
- the extension portion 20c extending from the chevron portion 20a on the right side is connected to the power supply and dimming control unit in the temple 14.
- the conductive member 20 is provided with a total of four connector portions 20d, one at each end of each chevron portion 20a. Conductable terminals are exposed on each connector portion 20d.
- the photochromic lens 11 is configured by superimposing an electrochromic element (EC element) 22 which is an electronic element for dimming on the front side of a lens 21 which is an optical element made of resin.
- EC element electrochromic element
- the lens 21 is a concave meniscus lens having a convex surface 21a on the front surface side and a concave surface 21b on the rear surface side
- the sheet-shaped electrochromic element 22 has a curved shape along the convex surface 21a of the lens 21.
- a coat layer having a predetermined function antireflection effect, ultraviolet or infrared transmission control, lens protection effect, etc.
- An edge surface 21c connecting the convex surface 21a and the concave surface 21b is formed on the outer peripheral portion of the lens 21.
- the peripheral portion is processed (ball shape) so as to have an outer shape corresponding to the rim assembly 13 (left rim portion 13A and right rim portion 13B) of the frame 12 while having the convex surface 21a and the concave surface 21b. (Process).
- the lens 21 and the electrochromic element 22 are manufactured separately, the electrochromic element 22 is preformed into a curved shape corresponding to the convex surface 21a of the lens 21, and then the electrochromic element 22 is manufactured. And the lens 21 can be bonded together. Alternatively, it is also possible to obtain the photochromic lens 11 by integrally molding the electrochromic element 22 at the time of molding the lens 21.
- the electrochromic element 22 is configured by laminating a first electrode layer, an electrochromic layer (light control layer), and a second electrode layer on a substrate such as resin. ..
- the electrochromic layer contains an electrochromic material that reversibly changes the optical properties by a redox reaction by applying a voltage.
- the first electrode layer and the second electrode layer of the electrochromic element 22 are transparent conductive films made of a transparent and conductive material, respectively.
- Two terminal portions 23 for the positive electrode and the negative electrode are provided on the front surface side of the peripheral edge portion of each photochromic lens 11, and a part of the first electrode layer constitutes one terminal portion 23, and the second terminal portion 23 is provided. A part of the electrode layer constitutes the other terminal portion 23.
- the electrochromic layer of the electrochromic element 22 is in a transparent state (highest visible light transmittance) in a normal state where no voltage is applied, and is colored to a predetermined color corresponding to the electrochromic material by applying a voltage to transmit light. Decrease the rate.
- the photochromic lens 11 Assemble the photochromic lens 11 configured as described above to the rim assembly 13. As shown in FIG. 2, the photochromic lens 11 is assembled in a state where the front rim part 15 and the rear rim part 16 are separated. A conductive member 20 is attached to the front rim part 15 in advance. When the photochromic lens 11 is attached to the front rim part 15 from the rear, the front surface (convex surface 21a side) of the peripheral edge portion of the photochromic lens 11 comes into contact with the front wall portion 15a.
- the rear rim part 16 is attached to the front rim part 15 from the rear and fixed by the screw 18, the rear surface (concave surface 21b side) of the peripheral edge portion of the photochromic lens 11 comes into contact with the rear wall portion 16a.
- the peripheral edge of the photochromic lens 11 is fitted into the lens holding space P of the rim assembly 13, and is sandwiched between the front wall portion 15a and the rear wall portion 16a from the front and back, thereby adjusting in the front-rear direction.
- the position of the optical lens 11 is determined.
- the edge surface 21c is located facing the peripheral wall 15b, and the position of the photochromic lens 11 in the height direction and the left-right direction is determined.
- the photochromic lens 11 may be further fixed to the rim assembly 13 with an adhesive or the like.
- the terminal portion 23 arranged on the front side of each photochromic lens 11 contacts the connector portion 20d of the conductive member 20 in a conductive state. This makes it possible to supply electrical energy from the power source in the temple 14 to the electrochromic element 22 via the conductive member 20.
- the contact points between the conductive member 20 and the terminal portion 23 are covered with the front wall portion 15a and the rear wall portion 16a of the rim assembly 13, and are not exposed to the appearance of the electronic dimming glasses 10.
- the terminal portion 23 Since the structure is such that the terminal portion 23 is brought into contact with the connector portion 20d of the conductive member 20 arranged on the rear surface side of the front wall portion 15a from the rear and further pressed by the rear wall portion 16a from the rear, the terminal portion is held.
- the photochromic lens 11 including the 23 can be easily assembled, and the connector portion 20d and the terminal portion 23 can be brought into contact with each other stably and with high accuracy.
- the peripheral edge portion of the photochromic lens 11 interferes with the front wall portion 15a and the rear wall portion 16a, and the rim Assembling the photochromic lens 11 to the assembly 13 becomes difficult. Further, even if the assembly is possible, the peripheral portion of the photochromic lens 11 is inserted into the lens holding space P while sliding toward the bottom portion (peripheral wall 15b) of the holding portion 17, so that the connector portion There is a possibility that the 20d and the terminal portion 23 may interfere with each other and may not be inserted smoothly.
- the photochromic lens 11 is a concave meniscus lens, and the longer the distance from the eye point EP (FIG. 4) to the peripheral edge of the lens, the thicker the edge thickness (the length of the edge surface 21c in the front-rear direction), and conversely.
- the edge thickness t at the distance ⁇ and the edge thickness t + t'at the distance ⁇ As shown in FIG.
- the thickness of the photochromic lens 11 is the sum of the thickness of the lens 21 and the thickness of the electrochromic element 22.
- the frame 12 (rim assembly 13) in the electronic photochromic glasses 10 has a structure in which the peripheral edge portion of the photochromic lens 11 is sandwiched and held from the front and back, it is necessary to appropriately manage the edge thickness of the photochromic lens 11.
- the thickness of the photochromic lens 11 in the front-rear direction exceeds the distance between the front wall portion 15a and the rear wall portion 16a (inner dimension of the holding portion 17)
- the lens holding space P cannot be entered.
- the inner dimension of the holding portion 17 in the front-rear direction from the front wall portion 15a to the rear wall portion 16a is the maximum thickness that can be held by the frame 12 (rim assembly 13).
- the edge thickness t described above is the maximum thickness that can be held by the holding portion 17, and the portion of the peripheral edge portion of the photochromic lens 11 where the edge thickness exceeds the maximum thickness is the lens holding space P. It becomes an interference region Q that does not fit in.
- the terminal portion 23 connected to the conductive member 20 is provided on the front side, the position reference in the front-rear direction of the portion to be accommodated in the lens holding space P is managed on the front side. Then, the portion behind the maximum thickness (t) set with the front side as a reference becomes the surplus thickness t'that does not fit in the lens holding space P. Further, interference with the rear rim part 16 may occur in the overlapping range h that overlaps with the rear wall portion 16a in the radial direction centered on the eye point EP. Therefore, in the superposition range h, the portion near the rear of the outer edge included in the surplus thickness t'is the interference region Q. This interference region Q includes a part of the concave surface 21b.
- FIG. 5 shows an example of a functional block for controlling the shape of the photochromic lens 11.
- a processing device cutting device, grinding device, etc.
- a processing device that processes the photochromic lens 11 may be provided with the entire functional block, or an external terminal (computer) that is provided separately from the processing device and sends instructions to the processing device functions. It may have a part of the block.
- the functional block for control has a control unit 30 that controls the overall processing of the photochromic lens 11.
- the control unit 30 includes a storage unit 31, a calculation unit 32, and a determination unit 33.
- the storage unit 31 is composed of storage means such as ROM (Read Only Memory) and RAM (Random Access Memory).
- the calculation unit 32 and the determination unit 33 are realized as functions of a processor such as a CPU (Central Processing Unit).
- the measuring unit 34 is provided with a measuring means for measuring the surface shape of the photochromic lens 11 and the dimensions of each part.
- the processing unit 35 includes a holding means for holding the photochromic lens 11, a cutting means for processing the photochromic lens 11 held by the holding means, and a grinding means.
- the machining program for performing machining according to the present embodiment is stored in the storage unit 31, and the control unit 30 reads and executes the machining program. In other words, the machining program causes the control unit 30 to perform processing in each step described later.
- the flowchart of FIG. 6 shows a processing process of the photochromic lens 11 (lens 21), particularly a ball-shaped processing process that enables the photochromic lens 11 to be assembled to the frame 12.
- the surface shapes of the convex surface 21a and the concave surface 21b are already formed on the lens 21.
- the processing content shown in the flowchart of FIG. 6 can be applied to either the state after the electrochromic element 22 is attached to the surface of the lens 21 or the state of the lens 21 alone before the electrochromic element 22 is attached.
- the target of the measurement by the measuring unit 34 and the processing by the processing unit 35 may be the lens 21 alone or the lens 21 and the electrochromic element 22 combined.
- the thickness information of the photochromic lens 11 can be acquired as the thickness of the lens 21 actually measured by the measuring unit 34 plus the thickness of the designed electrochromic element 22.
- step S1 the storage unit 31 of the control unit 30 stores frame shape data (three-dimensional data) including the shape and various dimensions related to the frame 12. From the frame shape data, it is possible to acquire the internal dimension information of the holding portion 17, such as the maximum thickness (maximum edge thickness t that can be held) of the lens holding space P and the depth in the radial direction (superimposition range h) described above. ..
- step S2 rough processing of the photochromic lens 11 is performed.
- the control section 30 controls the machining section 35 based on the frame shape data input to the storage section 31, and the outer peripheral shape of the photochromic lens 11 is contoured along the left rim section 13A and the right rim section 13B. To process.
- step S3 the control unit 30 controls the measurement unit 34 to acquire lens shape data. Specifically, the surface positions of the front and back surfaces of the photochromic lens 11 are measured.
- the measuring unit 34 can measure the lens surface position by tracing the lens surface of the photochromic lens 11 with a stylus and detecting the displacement of the stylus in the lens thickness direction.
- step S4 the calculation unit 32 of the control unit 30 calculates the edge thickness of the peripheral portion of the photochromic lens 11 based on the lens shape data obtained in step S3.
- the edge thickness calculation is performed over the entire circumference of the photochromic lens 11, and the calculation result is stored in the storage unit 31 as thickness information of the lens peripheral portion.
- lens shape data from the design value of the photochromic lens 11 (lens 21) without performing the measurement in step S3.
- the actual measurement in step S3 it is possible to eliminate the influence of the manufacturing error on the design value and improve the accuracy of the thickness information of the lens peripheral portion acquired in step S4.
- step S5 the peripheral edge portion of the photochromic lens 11, particularly the edge surface 21c, which is the contour, is finished based on the above-mentioned frame shape data and lens shape data.
- the outer peripheral shape of the photochromic lens 11 is determined, and then the thickness adjustment is performed.
- step S6 the calculation unit 32 and the determination unit 33 of the control unit 30 compare and calculate the internal dimension information of the holding unit 17 of the frame 12 and the thickness information of the peripheral portion of the photochromic lens 11 acquired earlier.
- Information on an interference region Q that does not fit in the lens holding space P of the holding portion 17 in the peripheral portion of the photochromic lens 11 is acquired. Specifically, the presence / absence of the interference region Q is determined, the position when the interference region Q exists is specified, and the data is stored in the storage unit 31.
- the process of step S6 may be performed between steps S4 and S5, or at the same time as the process of step S5.
- step S7 the determination unit 33 determines whether or not to perform the thickness adjustment process for removing the interference region Q based on the information acquired in step S6.
- step S7: NO the interference region Q does not exist (step S7: NO)
- the photochromic lens 11 is already in a state where it can be assembled to the frame 12, and the spherical processing is completed.
- step S7 If the interference region Q exists (step S7: YES), the process proceeds to step S8.
- step S8 the control unit 30 controls the processing unit 35 to perform thickness adjustment processing on the concave surface 21b side of the photochromic lens 11 to remove the interference region Q.
- the photochromic lens 11 is ready to be assembled to the frame 12, and the ball-shaped processing is completed.
- the peripheral edge portion of the photochromic lens 11 is stepped including a first surface 24 facing rearward and a second surface 25 facing the outer peripheral side.
- the first surface 24 is a plane perpendicular to the front-rear direction (the optical axis of the photochromic lens 11), and the outer peripheral portion of the first surface 24 is connected to the edge surface 21c.
- the second surface 25 is a surface extending rearward from the inner peripheral portion of the first surface 24, and has a curved shape along the inner edge portion 16c of the rear wall portion 16a of the rear rim part 16. In other words, the second surface 25 has a shape that fits into the inner edge portion 16c in the completed state of the electronic dimming glasses 10.
- the first surface 24 is formed as a surface that comes into contact with the front surface of the rear wall portion 16a of the rear rim part 16 when the peripheral edge portion of the photochromic lens 11 is held by the holding portion 17. From the viewpoint of not causing the interference region Q to interfere with the holding portion 17, it is possible to remove the lens peripheral portion up to a position in front of the first surface 24 (that is, more in the front-rear direction than in the present embodiment). However, as in the present embodiment, the first surface 24 formed with the minimum amount of removal toward the front can save time and cost required for processing such as cutting.
- the positioning effect in the front-rear direction can be obtained by the first surface 24, and the stability and position of the photochromic lens 11 incorporated in the frame 12 can be obtained. Contributes to improved accuracy.
- the first surface 24 has a planar shape facing rearward.
- a first surface 24 has an advantage that it has a simple shape and is easy to process, but a different shape can also be adopted.
- a protrusion protruding rearward from the first surface 24 may be partially provided so that the protrusion comes into contact with the rear wall portion 16a.
- the first surface 24 may be extended toward the inner diameter side and connected to the concave surface 21b without providing the second surface 25. It is possible. However, in this processing, when the photochromic lens 11 is attached to the frame 12, the first surface 24 (a flat surface extending toward the inner diameter side) is exposed around the concave surface 21b, which may adversely affect the optical performance and appearance. There is sex.
- the thickness of the peripheral portion of the lens is restricted with respect to the frame 12 having the holding portion 17 that sandwiches and holds the peripheral portion of the photochromic lens 11 from the front and back. It is possible to easily assemble the photochromic lens 11 without this.
- the interference region Q with the holding portion 17 is removed by processing the other surface (concave surface 21b side) on the opposite side. Therefore, it is possible to efficiently adjust the thickness of the lens with a high degree of freedom without affecting the feeding structure to the electrochromic element 22 which is an electronic element for dimming.
- FIG. 7 shows a modified example of the thickness adjustment processing of the photochromic lens 11.
- the inclined surface 16e is formed on the front surface side of the rear wall portion 16a of the rear rim part 16 as a configuration of the holding portion 17 of the frame 12.
- the inclined surface 16e has an inclined shape that approaches the eye point EP as it advances from the front to the rear, and the shape of the lens holding space P1 is different from the shape of the lens holding space P of FIG. 4 described above. ..
- step S1 of the flowchart of FIG. 6 the internal dimension information of the holding portion 17 including the inclined shape of the inclined surface 16e is acquired.
- step S6 of the flowchart the lens holding space P1 of the holding portion 17 of the peripheral portion of the photochromic lens 11 is based on the internal dimension information of the holding portion 17 of the frame 12 and the thickness information of the peripheral portion of the photochromic lens 11. Acquires information on the interference region Q1 that does not fit in the lens.
- the inclined surface 26 is formed on the peripheral edge of the photochromic lens 11.
- the inclined surface 26 is one continuous surface from the concave surface 21b to the edge surface 21c, and has an inclined shape that approaches the eye point EP as it progresses from the convex surface 21a side (front) to the concave surface 21b side (rear).
- the inclined surface 26 has a shape that fits into the inclined surface 16e of the rear rim part 16 in the completed state of the electronic dimming glasses 10.
- one inclined surface 26 may be formed continuously from the concave surface 21b to the edge surface 21c without dividing into surfaces such as the first surface 24 and the second surface 25.
- the interference region Q1 along the inclined surface 26 (FIG. 7). ) Is smaller than the amount of the interference region Q (FIG. 4) along the first surface 24 and the second surface 25.
- the photochromic lens 11 of the above embodiment is a concave meniscus lens, but it can also be applied to a convex meniscus lens.
- FIG. 8 shows a modified example applied to the thickness adjustment processing of the photochromic lens 40, which is a convex meniscus lens.
- the photochromic lens 40 is configured by superimposing an electrochromic element 42, which is an electronic element for dimming, on the rear surface side of the lens 41, which is an optical element made of resin.
- the lens 41 is a convex meniscus lens having a convex surface 41a on the front surface side and a concave surface 41b on the rear surface side, and an edge surface 41c connecting the convex surface 41a and the concave surface 41b is formed on the outer peripheral portion of the lens 41.
- the edge surface 41c is a surface extending in the front-rear direction.
- the sheet-shaped electrochromic element 42 has a curved shape along the concave surface 41b of the lens 41.
- Two terminal portions (not shown) for the positive electrode and the negative electrode connected to the first electrode layer and the second electrode layer of the electrochromic element 42 are arranged on the rear surface side of the peripheral edge portion of the photochromic lens 40. These terminal portions have the same role as the terminal portions 23 of the above-described embodiment.
- the photochromic lens 40 is held by the holding portions 45 provided on the front rim parts 43 and the rear rim parts 44 of the spectacle frame.
- the front rim part 43 has a front wall portion 43a.
- the rear rim part 44 has a rear wall portion 44a located behind the front wall portion 43a and a peripheral wall 44b protruding forward from the peripheral edge of the rear wall portion 44a.
- the holding portion 45 is formed with a lens holding space P2 surrounded on three sides by a front wall portion 43a, a rear wall portion 44a, and a peripheral wall portion 44b.
- An inner edge portion 43b and an inner edge portion 44c are formed on the inner peripheral side of the front wall portion 43a and the rear wall portion 44a.
- the lens holding space P2 is an annular groove portion (inner peripheral groove) that opens toward the inner peripheral side between the inner edge portion 43b and the inner edge portion 44c.
- a conductive member (not shown) is attached at a position along the rear wall portion 44a of the rear rim part 44.
- This conductive member has the same role as the conductive member 20 of the above-described embodiment.
- the photochromic lens 40 is assembled with the front rim part 43 and the rear rim part 44 separated.
- the rear surface (concave surface 41b side) of the peripheral edge portion of the photochromic lens 40 comes into contact with the rear wall portion 44a.
- the front surface (convex surface 41a side) of the peripheral edge portion of the photochromic lens 40 comes into contact with the front wall portion 43a.
- the position of the photochromic lens 40 in the front-rear direction is determined by being sandwiched between the front wall portion 43a and the rear wall portion 44a from the front and back. Further, the edge surface 41c is located facing the peripheral wall 44b, and the position of the photochromic lens 40 in the height direction and the left-right direction is determined.
- the terminal portion (not shown) arranged on the rear surface side of the photochromic lens 40 comes into contact with the connector portion of the conductive member (not shown) in a conductive state. This makes it possible to supply electrical energy to the electrochromic element 42.
- the photochromic lens 40 which is a convex meniscus lens, has a thicker edge as the distance from the eye point EP to the peripheral edge of the lens becomes shorter. Variations may occur. Since the holding portion 45 has a structure in which the peripheral edge portion of the photochromic lens 40 is sandwiched and held from the front and back, the thickness of the photochromic lens 40 in the front-rear direction is between the front wall portion 43a and the rear wall portion 44a (holding). It is necessary to manage it so that it fits within the inner dimensions of the part 45).
- a terminal portion (a portion connected to the conductive member) is provided on the rear surface side, and the position reference in the front-rear direction of the portion to be accommodated in the lens holding space P2 is managed on the rear surface side. Therefore, in a place where the edge thickness of the photochromic lens 40 is larger than the inner dimension of the holding portion 45, the region including a part of the convex surface 41a on the front side overlaps with the front wall portion 43a of the front rim part 43 (lens holding space P2). It becomes the interference area Q2.
- Thickness adjustment processing is performed to remove the interference region Q2 and adjust the shape of the peripheral edge of the photochromic lens 40.
- the flow of the thickness adjustment processing for the photochromic lens 40 is the same as the flow of the thickness adjustment processing of the photochromic lens 11 described above with reference to the flowchart of FIG. 6, and the details will be omitted.
- the difference from the thickness adjustment processing of the photochromic lens 11 is that in the case of the photochromic lens 40, the target of the thickness adjustment processing in step S8 is not the concave surface 41b side but the convex surface 41a side.
- a stepped processing including a first surface 46 facing forward and a second surface 47 facing the outer peripheral side is applied to the peripheral edge portion of the photochromic lens 40.
- the first surface 46 is a plane perpendicular to the front-rear direction, and the outer peripheral portion of the first surface 46 is connected to the vicinity of the leading edge of the edge surface 41c.
- the second surface 47 is a surface extending forward from the inner peripheral portion of the first surface 46, and has a shape along the inner edge portion 43c of the front wall portion 43a of the front rim part 43.
- the photochromic lens 11 of the above embodiment has a convex surface 21a on the front surface side, a concave surface 21b on the rear surface side, an electrochromic element 22 (including a terminal portion 23) on the convex surface 21a side, and a concave surface 21b.
- the interference region Q and the interference region Q1 are removed by processing to the side.
- the photochromic lens 40 has a convex surface 41a on the front surface side, a concave surface 41b on the rear surface side, an electrochromic element 42 on the concave surface 41b side, and an interference region Q2 by processing to the convex surface 21a side. It is being removed. It can also be applied to lenses and processing with different forms.
- the photochromic lens 11 similarly to the photochromic lens 40, it is possible to arrange the terminal portion on the concave surface 21b side and perform thickness adjustment processing (processing to remove the interference region) on the convex surface 21a side. be.
- the present invention is not limited to the type in which the entire electronic element is arranged on one surface of the photochromic lens, and at least the terminal portion connected to the electronic element is arranged on one surface. It can be applied if it is a lens.
- the electrochromic elements 22 and 42 are applied as the electronic elements constituting the photochromic lens 11 and the photochromic lens 40, but the present invention relates to a photochromic lens having an electronic element other than the electrochromic element. It can also be applied to processing.
- an electrophoretic element, a liquid crystal element, and the like are common to an electrochromic element in that the optical properties are changed by supplying electric energy. Therefore, the same effect can be obtained by applying the above-mentioned technique in the processing of a photochromic lens for eyeglasses using an electrophoretic element liquid crystal element as an electronic element.
- the term "dimming" in the present invention means all the optical effects of such various electronic elements on the optical element, and is used to change the light transmittance (light transmittance) and color in a narrow sense. Not limited.
- the edge surface 21c of the lens 21 in the above embodiment is a surface extending in the front-rear direction. Even if the edge surface 21c having this shape comes into contact with the peripheral wall 15b of the front rim part 15, it does not affect the position accuracy of the photochromic lens 11 in the front-rear direction.
- the outer peripheral shape of the lens 11 It is suitable as the outer peripheral shape of the lens 11.
- a lens outer peripheral shape different from the edge surface 21c may be selected.
- the outer peripheral shape of the lens may be set as a tapered surface that changes its radial position as it advances in the front-rear direction.
- the configuration of the holding portion in the frame is not limited to the holding portions 17 and 45 of the above embodiment.
- a holding portion having a U-shaped cross-sectional structure in which the peripheral walls 15b and 44b are curved may be used.
- the inclined surface 16e of the rear wall portion 16a is not parallel to the rear surface of the front wall portion 15a, but the rear surface of the front wall portion 15a is also the inclined surface 16e.
- a holding portion or the like having a V-shaped cross-sectional structure in which the portion sandwiching the peripheral edge portion of the lens from the front and back gradually widens toward the inner peripheral side may be used.
- the lenses 21 and 41 which are optical elements, are made of resin, but they may be applied to a glass lens.
- the present invention it becomes possible to easily assemble the spectacle lens to a frame having a holding portion that sandwiches and holds the peripheral portion of the spectacle lens from the front and back without being restricted by the thickness of the peripheral portion of the lens. It is possible to improve the productivity and design of optical glasses.
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- Optics & Photonics (AREA)
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- Inorganic Chemistry (AREA)
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Abstract
Description
Claims (4)
- 光学素子と重なる電子素子を有し、前後方向の一方の面に配した端子部を通じて前記電子素子に電気エネルギーを供給して調光効果を得る眼鏡レンズの加工方法において、
前記眼鏡レンズの周縁部を前後から挟んで保持する保持部を有するフレームにおける前記保持部の内寸情報を取得し、
前記フレームに対応する外形形状に加工した前記眼鏡レンズの周縁部の厚み情報を取得し、
前記保持部の内寸情報と前記眼鏡レンズの周縁部の厚み情報とに基づき、前記眼鏡レンズの周縁部のうち前記保持部に収まらない干渉領域を判定し、
前記眼鏡レンズの前記一方の面とは反対の他方の面に対して、前記干渉領域を除去する厚み調整加工を行うことを特徴とする眼鏡レンズの加工方法。 - 前記眼鏡レンズの前記一方の面は凸面であり、前記他方の面は凹面であることを特徴とする請求項1に記載の眼鏡レンズの加工方法。
- 前記厚み調整加工は、前記眼鏡レンズの径方向のうち、前記保持部と重なる部分のみを除去することを特徴とする請求項1又は2に記載の眼鏡レンズの加工方法。
- 光学素子と重なる電子素子を有し、前後方向の一方の面に配した端子部を通じて前記電子素子に電気エネルギーを供給して調光効果を得る眼鏡レンズの加工プログラムにおいて、
前記眼鏡レンズの加工を制御する制御部に、
前記眼鏡レンズの周縁部を前後から挟んで保持する保持部を有するフレームにおける前記保持部の内寸情報を取得させ、
前記フレームに対応する外形形状に加工した前記眼鏡レンズの周縁部の厚み情報を取得させ、
前記保持部の内寸情報と前記眼鏡レンズの周縁部の厚み情報とに基づき、前記眼鏡レンズの周縁部のうち前記保持部に収まらない干渉領域を判定させ、
前記眼鏡レンズの前記一方の面とは反対の他方の面に対して、前記干渉領域を除去する厚み調整加工を行わせることを特徴とする眼鏡レンズの加工プログラム。
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JP2022568085A JPWO2022123915A1 (ja) | 2020-12-07 | 2021-10-19 | |
CN202180082091.6A CN116829304A (zh) | 2020-12-07 | 2021-10-19 | 眼镜镜片的加工方法及眼镜镜片的加工程序 |
KR1020237022612A KR20230121080A (ko) | 2020-12-07 | 2021-10-19 | 안경 렌즈의 가공 방법 및 안경 렌즈의 가공 프로그램 |
US18/255,890 US20240019719A1 (en) | 2020-12-07 | 2021-10-19 | Spectacle lens processing method and spectacle lens processing program |
EP21903019.4A EP4258044A4 (en) | 2020-12-07 | 2021-10-19 | SPECTACLE LENS TREATMENT DEVICE AND SPECTACLE LENS TREATMENT PROGRAM |
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JP2020202672 | 2020-12-07 | ||
JP2020-202672 | 2020-12-07 |
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US (1) | US20240019719A1 (ja) |
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JP (1) | JPWO2022123915A1 (ja) |
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WO2019229725A2 (en) * | 2018-06-02 | 2019-12-05 | BODDEDA, Apparao | A smart contact lens for performing wireless operations and a method of producing the same |
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WO2020136175A1 (en) * | 2018-12-24 | 2020-07-02 | Essilor International | Method for obtaining data representative of the outline of a shoulder delimiting a step-back portion in an eyeglass |
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JP6390103B2 (ja) * | 2014-01-14 | 2018-09-19 | 株式会社ニデック | レンズ周縁加工装置、及びレンズ周縁加工プログラム |
EP3608705A1 (en) * | 2018-08-10 | 2020-02-12 | Ricoh Company, Ltd. | Glasses-type device and charger for glasses-type device |
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2021
- 2021-10-19 KR KR1020237022612A patent/KR20230121080A/ko unknown
- 2021-10-19 US US18/255,890 patent/US20240019719A1/en active Pending
- 2021-10-19 CN CN202180082091.6A patent/CN116829304A/zh active Pending
- 2021-10-19 EP EP21903019.4A patent/EP4258044A4/en active Pending
- 2021-10-19 JP JP2022568085A patent/JPWO2022123915A1/ja active Pending
- 2021-10-19 WO PCT/JP2021/038553 patent/WO2022123915A1/ja active Application Filing
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JPH0224206B2 (ja) | 1982-05-12 | 1990-05-28 | Honshu Paper Co Ltd | |
JP2001047348A (ja) | 1999-08-06 | 2001-02-20 | Hoya Corp | レンズ加工方法 |
JP2012185490A (ja) * | 2011-02-16 | 2012-09-27 | Nidek Co Ltd | 眼鏡レンズ加工形状取得方法 |
WO2017104466A1 (ja) * | 2015-12-15 | 2017-06-22 | 株式会社リコー | エレクトロクロミック装置 |
WO2019026416A1 (ja) * | 2017-07-31 | 2019-02-07 | 株式会社ニデック | 眼鏡枠形状測定装置、及びレンズ加工装置 |
WO2020136175A1 (en) * | 2018-12-24 | 2020-07-02 | Essilor International | Method for obtaining data representative of the outline of a shoulder delimiting a step-back portion in an eyeglass |
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EP4258044A1 (en) | 2023-10-11 |
US20240019719A1 (en) | 2024-01-18 |
EP4258044A4 (en) | 2024-10-23 |
CN116829304A (zh) | 2023-09-29 |
JPWO2022123915A1 (ja) | 2022-06-16 |
KR20230121080A (ko) | 2023-08-17 |
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