WO2020138134A1 - 光学部材の製造方法および光学部材 - Google Patents
光学部材の製造方法および光学部材 Download PDFInfo
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- WO2020138134A1 WO2020138134A1 PCT/JP2019/050745 JP2019050745W WO2020138134A1 WO 2020138134 A1 WO2020138134 A1 WO 2020138134A1 JP 2019050745 W JP2019050745 W JP 2019050745W WO 2020138134 A1 WO2020138134 A1 WO 2020138134A1
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- Prior art keywords
- thin film
- film
- optical
- optical member
- laser light
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/021—Lenses; Lens systems ; Methods of designing lenses with pattern for identification or with cosmetic or therapeutic effects
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
- B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
- B23K26/402—Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00865—Applying coatings; tinting; colouring
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic materials other than metals or composite materials
- B23K2103/52—Ceramics
-
- 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
- G02C7/104—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having spectral characteristics for purposes other than sun-protection
Definitions
- the present invention relates to an optical member manufacturing method and an optical member.
- a thin film (SnO2 film, Cr film, or the like) on the optical surface of the lens substrate is patterned in a predetermined pattern.
- a resist pattern is formed on the optical surface by an inkjet recording method (Inkjet Recording Method), a thin film is formed on the resist pattern, and then the resist pattern is removed to form a thin film. Partial peeling is performed (see, for example, Patent Document 1).
- the optical surface is curved, so it is necessary to form a resist pattern on the curved surface when patterning the thin film.
- the landing of the resist on the optical surface varies, so that the resist pattern may not be accurately formed on the optical surface, and as a result, highly accurate patterning may not be performed.
- the process steps for patterning may be complicated.
- the present invention can perform patterning with high accuracy even when performing patterning on a thin film on a curved optical surface of an optical member, and suppresses complication of processing steps for patterning.
- the purpose is to provide technology that can.
- the present invention has been devised to achieve the above object.
- the first aspect of the present invention is A film forming step of forming a thin film on the optical surface of the optical substrate having a curved optical surface, A removal step of partially removing the thin film on the optical surface to pattern the thin film, In the removing step, the thin film is removed by irradiating with a laser beam.
- the second aspect of the present invention is In the removing step, the method of manufacturing an optical member according to the first aspect, wherein the irradiation of the laser light is performed using a laser processing machine compatible with three-dimensional control of a focus position of the laser light.
- a third aspect of the present invention is A laser beam having a wavelength belonging to a wavelength band in which the difference between the transmittance with respect to the optical substrate and the transmittance with respect to the thin film is 1% or more is used as the laser beam irradiated in the removing step. It is a manufacturing method of an optical member as described.
- a fourth aspect of the present invention is Between the optical substrate and the thin film, a non-removing film forming step of forming a film of a material different from the thin film as a non-removing film, As the laser light irradiated in the removing step, in addition to the transmittance with respect to the optical base material, the transmittance with respect to the non-removed film has a difference of 1% or more from the transmittance with respect to the thin film. It is a manufacturing method of an optical member given in the 3rd mode using laser light.
- a fifth aspect of the present invention is The optical member is a method for manufacturing an optical member according to any one of the first to fourth aspects, which is a spectacle lens.
- a sixth aspect of the present invention is The thin film is the method for producing an optical member according to any one of the first to fifth aspects, which is a metal oxide film having absorption or a metal film.
- a seventh aspect of the present invention is The pattern portion formed by the patterning in the removing step is configured by arranging a plurality of same-shaped portions on the optical surface, and the dimensional variation of each of the same-shaped portions is ⁇ 10% or less. It is a method for manufacturing an optical member according to any one of the first to sixth aspects.
- An eighth aspect of the present invention is An optical substrate having a curved optical surface, A thin film formed on the optical surface of the optical substrate, And a pattern portion in which the thin film is partially removed,
- the pattern portion is an optical member configured by arranging a plurality of identical shaped portions on the optical surface.
- a ninth aspect of the present invention is The pattern portion is the optical member according to the eighth aspect, wherein the dimensional variation of each of the plurality of identically shaped portions is ⁇ 10% or less.
- a tenth aspect of the present invention is in the ninth aspect, the pattern portion has a dimensional variation of ⁇ 10% or less between the same-shaped portion arranged near the center of the optical surface and the same-shaped portion arranged near the periphery of the optical surface. It is the described optical member.
- An eleventh aspect of the present invention is The pattern portion constitutes a dot pattern,
- the said same shape part is an optical member as described in any one of 8th-10th aspect which comprises the dot in the said dot pattern.
- a twelfth aspect of the present invention is The pattern portion is the optical member according to any one of the eighth to eleventh aspects, which has a laser processing mark on a base surface exposed by removing the thin film.
- a thirteenth aspect of the present invention is The optical member is the optical member according to any one of the eighth to twelfth aspects, which is a spectacle lens.
- a fourteenth aspect of the present invention is The thin film is the optical member according to any one of the eighth to thirteenth aspects, which is a metal oxide film having absorption or a metal film.
- the patterning can be performed with high accuracy, and the processing steps for patterning are complicated. Can be suppressed.
- FIG. 3 is a diagram showing a relationship for a second lens base material having a refractive index of 1.60, and FIG.
- 6C is a diagram showing a relationship for a third lens base material having a refractive index of 1.67. It is a partial enlarged view which shows a specific example of the pattern part in the spectacle lens which concerns on one Embodiment of this invention, (a) is a figure which shows the microscope observation result of the pattern part which concerns on this embodiment, (b) is a comparative example. It is a figure which shows the microscope observation result of the pattern part obtained using the inkjet recording method which becomes. It is explanatory drawing which shows one specific example of the observation result by the laser microscope about the pattern part in the spectacle lens which concerns on one Embodiment of this invention.
- FIG. 1 is a plan view showing a configuration example of a spectacle lens exemplified in this embodiment
- FIG. 2 is a sectional view thereof.
- the spectacle lens 10 has an object side surface and an eyeball side surface as optical surfaces.
- the “object side surface” is a surface located on the object side when the spectacles including the spectacle lens 10 are worn by the wearer.
- the “eyeball side surface” is the opposite, that is, the surface located on the eyeball side when the spectacles including the spectacle lens 10 are worn by the wearer. It is general that the surface on the object side is a convex surface and the surface on the eyeball side is a concave surface, that is, the spectacle lens 10 is a meniscus lens.
- the spectacle lens 10 in the present embodiment has a plurality of fine dots 21 arranged isotropically and uniformly on at least one of the object side surface and the eyeball side surface. 21 forms a predetermined pattern.
- the predetermined pattern may be partially formed. Further, the predetermined pattern may not be composed of the plurality of fine dots 21 but may be composed of, for example, characters or figures.
- a plurality of dots 21 forming a predetermined pattern are formed in the same shape (for example, circular shape). "The dots 21 are arranged isotropically and uniformly" means that the intervals between the adjacent dots 21 are arranged at a constant pitch P.
- the spectacle lens 10 having such a predetermined pattern has a lens base material 11 which is an optical base material and both surface sides thereof (that is, an object side surface and an eyeball side surface, respectively).
- the anti-reflection film (AR film) 14 is provided.
- the case where the patterning thin film 13 is provided on the object side surface is taken as an example, but the patterning thin film 13 is not limited to this, and may be provided on at least one surface.
- the spectacle lens 10 may have another film formed in addition to the HC film 12, the patterning thin film 13 and the AR film 14.
- the lens base material 11 is made of a general resin material used for an optical lens, and is molded into a predetermined lens shape. That is, the lens substrate 11 has an optical surface for forming a predetermined lens shape on each of the object side surface and the eyeball side surface.
- the predetermined lens shape may be any of a single focus lens, a multifocal lens, a progressive power lens, and the like. Regardless of the lens shape, at least one (generally both) of the optical surfaces of the lens substrate 11 is curved.
- the resin material forming the lens substrate 11 has a refractive index (nD) of about 1.50 to 1.74, for example.
- the lens base material 11 may be made of not only the resin material described above but also another resin material that can obtain a desired degree of refraction, or may be made of inorganic glass.
- the HC film 12 is made of, for example, a curable material containing a silicon compound, and is a film having a thickness of about 3 ⁇ m to 4 ⁇ m.
- the refractive index (nD) of the HC film 12 is close to the refractive index of the material of the lens substrate 11 described above, for example, about 1.49 to 1.74, and the film configuration is selected according to the material of the lens substrate 11. To be done.
- the durability of the spectacle lens 10 can be improved.
- the patterning thin film 13 is formed on the optical surface of the lens substrate 11 via the HC film 12, and is formed of, for example, a thin film having a thickness of several nm to several tens of nm.
- a material for forming the patterning thin film 13 for example, a metal or a metal oxide having a property of absorbing a laser beam described later is used. That is, the patterning thin film 13 is a metal oxide film or a metal film having absorption. Examples of such a film include chromium (Cr), tantalum (Ta), niobium (Nb), titanium (Ti), zirconium (Zr), gold (Au), silver (Ag), tin (Sn) and aluminum.
- Al tin dioxide
- SnO 2 tin dioxide
- the patterning thin film 13 also has a pattern portion 20 formed by partially removing the thin film.
- the pattern unit 20 constitutes the above-mentioned predetermined pattern.
- the pattern portion 20 is configured by arranging a plurality of same-shaped portions 21.
- the same-shaped portion 21 is formed by partially removing the thin film and corresponds to the dot 21 described above. That is, in the present embodiment, the pattern portion 20 constitutes a dot pattern which is a predetermined pattern, and the same-shaped portion 21 constitutes dots 21 in the dot pattern.
- the AR film 14 has a multi-layer structure in which films having different refractive indexes are laminated, and is a film that prevents reflection of light by an interference effect. However, it does not necessarily have a multi-layer structure, and may have a single-layer structure as long as a light reflection preventing effect can be obtained.
- the AR film 14 has a multi-layer structure of a low refractive index layer and a high refractive index layer
- the low refractive index film is made of, for example, silicon dioxide (SiO 2) having a refractive index of about 1.43 to 1.47.
- the high-refractive index film is made of a material having a higher refractive index than the low-refractive index film.
- Yttrium (Y2O3), and further, metal oxide such as aluminum oxide (Al2O3) are used at an appropriate ratio.
- FIG. 3 is a flowchart showing an example of the procedure of the manufacturing method according to the present embodiment.
- step 101 a lens base material 11 which is an optical base material is prepared (step 101, hereinafter the step is abbreviated as “S”).
- a step of forming the HC films 12 on both surface sides of the lens base material 11 is performed (S102).
- the HC film 12 may be formed by, for example, a dipping method using a solution in which a curable material containing a silicon compound is dissolved.
- the formed HC film 12 is not removed in the process described later. Therefore, in the film forming process of the HC film 12, a film made of a material different from that of the patterning thin film 13 is formed as a non-removal film between the lens substrate 11 and the patterning thin film 13 formed in the process described later. This corresponds to the “non-removed film forming step”.
- a thin film 13a of SnO2 film or Cr film to be the patterning thin film 13 is formed on the optical surface of the lens substrate 11 via the HC film 12. Is performed (S103). Specifically, a thin film 13a of SnO2 film or Cr film is formed on the HC film 12 on the convex side which is the object side surface. The film formation of such a thin film 13a may be performed by, for example, vacuum vapor deposition or sputtering. This step corresponds to a "film forming step" for forming the thin film 13a on the curved optical surface.
- a step of partially removing the thin film 13a to form the pattern portion 20 is performed (S104).
- This step corresponds to a "removal step" of patterning the thin film 13a by partially removing the thin film 13a.
- the patterning of the thin film 13a is performed by utilizing the irradiation of laser light, the details of which will be described later.
- the patterning thin film 13 having the pattern portion 20 is formed on the HC film 12 on the convex surface side.
- a cleaning step is performed to remove the residue, adhered matter (foreign matter) and the like during patterning (S105).
- a step of forming the AR film 14 is performed on each of the convex surface which is the object side surface and the concave surface which is the eyeball side surface (S106).
- the AR film 14 has a multi-layer structure, low refractive index layers and high refractive index layers are alternately laminated from the lower layer side.
- This film formation may be performed by applying ion-assisted vapor deposition, for example.
- the patterning for obtaining a predetermined pattern is performed by forming a resist pattern on the optical surface by an inkjet recording method and using the resist pattern.
- the resist pattern may not be accurately formed on the optical surface by resist pattern formation by the inkjet recording method, and as a result, highly accurate patterning may not be performed. Therefore, in the present embodiment, the patterning for obtaining the predetermined pattern (that is, the pattern portion 20) is performed by the laser processing using the irradiation of the laser light.
- the removing step (S104) when forming the pattern portion 20, only the portion of the thin film 13a to be removed is selectively irradiated with the laser light, and the energy of the laser light is used. Then, the thin film 13a is partially removed.
- Irradiation of the laser light at this time is performed using a laser processing machine corresponding to three-dimensional control of the focal position of the laser light.
- the laser processing machine includes a laser oscillator that oscillates a laser beam, a laser optical system that collects and irradiates the laser beam from the laser oscillator, and an object to be irradiated with the laser beam (in this embodiment, a thin film is formed. And a table portion to which a rear lens substrate) is fixed.
- a laser oscillator and a laser optical system may be integrated to form a laser head.
- "corresponding to the three-dimensional control of the focus position of the laser beam” means that at least one of the movement of the relative position between the laser optical system and the table portion or the optical path adjustment by the laser optical system,
- the focal position of the laser light applied to the object to be irradiated can be changed not only in the XY direction along the surface of the table portion but also in the Z direction along the optical axis direction of the laser light, and the variable mode thereof is also possible.
- the three-dimensional control of the focus position of the laser light is performed as follows. First, the pattern data regarding the pattern portion 20 to be formed and the surface data regarding the pattern forming surface of the lens substrate 11 on which the pattern portion 20 is formed are acquired. Then, the focal position of the laser light is changed in the XY directions according to the acquired pattern data, and the focal position of the laser light is also changed in the Z direction according to the acquired surface data. Such three-dimensional control of the focal position of the laser light may be performed using a control computer device connected to the laser processing machine.
- the patterning can be performed with high accuracy even when the thin film 13a on the curved optical surface is patterned. .. Moreover, since the thin film 13a can be directly patterned by using the laser light, the formation and removal of the resist pattern can be omitted.
- the laser beam irradiated in the removing step (S104) is for partially removing the thin film 13a, and the lens substrate 11 and the HC film 12 other than the thin film 13a should not be damaged by the irradiation. Is desirable. Therefore, in the present embodiment, laser light having the following wavelength is used for the irradiation of the laser light in the removing step (S104).
- FIG. 4 is an explanatory diagram showing the relationship between the wavelength of the laser light and the transmittance of the spectacle lens constituent member.
- FIG. 4A shows a case where a lens base material (first lens base material) 11 having a refractive index of 1.50 is used, the lens base material 11 is a single body (see a black broken line in the figure), the lens base material 11+HC film 12 The wavelength of the laser beam is changed for each of the lens base material 11+HC film 12+AR film 14 (refer to the black dotted line in the drawing) and the lens base material 11+thin film 13a (refer to the black solid line in the drawing). The specific example of the change of the transmittance at the time of making it is shown. Further, FIG.
- FIG. 4B shows a case where the lens base material (second lens base material) 11 having a refractive index of 1.60 is used, the lens base material 11 is a single body (see the black broken line in the figure), the lens base material 11+HC.
- the wavelength of the laser beam for each of the film 12 see the gray solid line in the figure
- the lens substrate 11+HC film 12+AR film 14 see the black dotted line in the diagram
- the lens substrate 11+thin film 13a see the black solid line in the diagram.
- FIG. 4C shows a case where the lens base material (third lens base material) 11 having a refractive index of 1.67 is used, the lens base material 11 alone (see the black broken line in the figure), the lens base material 11+HC.
- the wavelength of the laser beam for each of the film 12 see the gray solid line in the figure
- the lens substrate 11+HC film 12+AR film 14 see the black dotted line in the diagram
- the lens substrate 11+thin film 13a see the black solid line in the diagram.
- the transmittance sharply increases from the ultraviolet region of the laser light wavelength to the visible region, and the transmittance in the visible region (for example, 380 nm to 780 nm) and the near infrared region are increased.
- the difference in transmittance between the lens substrate 11+thin film 13a and the lens substrate 11 alone or the lens substrate 11+HC film 12 is large, but exceeds the wavelength region. It can be seen that there is a tendency that the difference becomes smaller.
- the transmittance When the transmittance is high, even if the member is irradiated with laser light, the energy of the laser light is difficult to be absorbed in the irradiated member (that is, the laser light is easily transmitted), so that the member is not damaged. Can be suppressed.
- the transmittance when the transmittance is low, the energy absorption rate of the irradiated laser light is high, so that processing or the like (for example, partial removal of a member) using the energy absorption can be efficiently performed. Therefore, if the difference in transmittance between the stacked members is large, it is possible to perform processing or the like using laser light on only one member.
- the difference between the transmittance of the lens substrate 11 and the transmittance of the thin film 13a of the laser light irradiated in the removing step (S104) is 1% or more, preferably 3% or more, A laser beam having a wavelength belonging to a wavelength band of 5% or more, and more preferably 10% or more is used.
- the transmittance for the HC film 12 which is a non-removed film, is different from the transmittance for the thin film 13a by 1% or more, preferably 3% or more, and more preferably 5%. % Or more, more preferably 10% or more, a laser beam having a wavelength belonging to a wavelength band is used.
- the difference from the transmittance for the thin film 13a is 1% or more, preferably 3% or more, more preferably 5% or more, still more preferably 10%. You may make it use the laser beam of the wavelength which belongs to the above wavelength bands.
- the transmittance of the lens substrate 11, the HC film 12, and the AR film 14 referred to here may include the transmittance of these laminated bodies.
- the wavelength band having a transmittance difference of 5% or more (that is, a more preferable transmittance difference), for example, in the case of the specific examples shown in FIGS. 4A to 4C, the wavelength band of 380 nm to 1150 nm Are listed.
- the removing step (S104) for example, laser light having a wavelength of 1064 nm is emitted as laser light having a wavelength belonging to such a wavelength band. If the laser light has a wavelength of 1064 nm, the transmittance difference is 10% or more, the transmittance of the lens base material 11 and the HC film 12 is 90% or more, and the influence of the laser light on the lens base material 11 is suppressed. Is possible.
- the transmittance difference is at least 1% or more, when the laser light is irradiated, the lens substrate 11 and the HC film 12 and the like are transmitted (though no damage is caused), but the thin film 13a is transmitted. Since it has a high absorption rate, it is possible to realize that only the irradiated portion is removed. That is, it is possible to directly pattern the thin film 13a using laser irradiation. Further, when the transmittance difference is preferably 3% or more, more preferably 5% or more, still more preferably 10% or more, direct patterning using laser irradiation can be ensured.
- the upper limit of the difference in transmittance is about 50%, considering that the lens substrate 11, the HC film 12, the thin film 13a, and the like all have optical transparency.
- the pattern portion 20 is formed by laser processing, and the laser processing is performed corresponding to the three-dimensional control of the focus position of laser light. Therefore, the pattern portion 20 is patterned with high precision, and specifically, is formed with the precision described below.
- FIG. 5 is a partially enlarged view showing a specific example of the pattern portion in the spectacle lens according to the present embodiment.
- the pattern portion 20 is a dot pattern formed of a plurality of dots (the same shape portion) 21, and the same microscopic observation result as the dot pattern arranged near the center of the optical surface of the spectacle lens 10.
- the results of microscopic observation of the dot patterns arranged near the periphery of the optical surface are shown side by side.
- FIG. 5A shows an example of a dot pattern according to the present embodiment obtained by laser processing
- FIG. 5B shows an example obtained by using an inkjet recording method as a comparative example. An example of a dot pattern is shown.
- the pattern portion 20 which is the dot pattern according to the present embodiment is configured by arranging dots (same shape portions) 21 on the optical surface, and each of the dots 21 respectively. Variation of ⁇ 10% or less, preferably 6% or less, more preferably 2% or less. Also, comparing the dots 21 forming the dot pattern arranged near the center of the optical surface of the spectacle lens 10 with the dots 21 forming the dot pattern arranged near the periphery of the optical surface, The dimensional variation is ⁇ 10% or less, preferably 6% or less, and more preferably 2% or less.
- the "dimensional variation” referred to here is (1) variation in the diameter dimension between the dots 21 having a substantially circular shape when viewed in a plane, and (2) vertical and horizontal diameter dimensions (aspect ratio) in a certain dot 21. Variation, at least one, and preferably both.
- the dimensional variation of the diameter of each dot 21 is, for example, 440 ⁇ 44 ⁇ m or less, preferably 440 ⁇ 26 ⁇ m or less, both near the center and near the periphery of the optical surface. It is preferably 440 ⁇ 8 ⁇ m or less.
- the variation in the aspect ratio of each dot 21 is, for example, 440 ⁇ 44 ⁇ m or less, preferably 440 ⁇ 26 ⁇ m or less, and more preferably 440 ⁇ 8 ⁇ m or less.
- the dimensional variation of each dot exceeds ⁇ 10%, specifically, exceeds 440 ⁇ 44 ⁇ m. Further, in particular, in the vicinity of the periphery of the optical surface, due to the time difference of ink landing, dot connection in which dots are connected to each other, or satellites (small dots) that are ejected around the original dots may occur. Therefore, the variation in aspect ratio tends to be large.
- the optical surface is a curved surface, for example, in the ink jet recording method, dimensional variation of more than ⁇ 10%, dot shape collapse (aspect ratio variation), etc. may occur.
- the pattern portion 20 formed by this is preferably ⁇ 10% or less, preferably. Can be suppressed to 6% or less, more preferably 2% or less.
- the degree of improvement is high as compared with the case of the inkjet recording method.
- the dot pattern is formed with extremely high accuracy, and as a result, the eyeglasses are formed. Stable quality can be secured for the lens 10.
- the optical surface is a curved surface
- the maximum dimensional variation will occur near the center and near the periphery of the optical surface, but as described in the present embodiment, the three-dimensional focus position If patterning is performed by irradiating laser light while controlling, the maximum dimensional variation can be suppressed to ⁇ 2% or less. Therefore, for example, even when the dot pattern is arranged over the entire surface of the curved optical surface, the dot pattern is formed with extremely high accuracy, and as a result, the spectacle lens 10 has stable quality. Can be secured.
- FIG. 6 is an explanatory diagram showing a specific example of an observation result of the pattern portion in the spectacle lens according to the present embodiment with a laser microscope.
- the pattern portion 20 formed by laser processing is a scan when the laser light is radiated in the removing step (S104) to the underlying surface where the thin film 13a is removed and exposed when observed by a laser microscope. It can be recognized that there is a laser processing mark along the mark. That is, if each dot 21 forming the pattern portion 20 has a laser processing mark, it is apparent that each dot 21 was formed by partially removing the thin film 13a by irradiation of laser light. Is recognized.
- the pattern portion 20 (that is, the dots 21 formed by laser processing) is formed by patterning the thin film 13a on the curved optical surface, the pattern portion 20 is formed with extremely high accuracy. It has been done. Therefore, each dot 21 constitutes, for example, a dot pattern formed with extremely high precision, and as a result, stable quality of the spectacle lens 10 can be ensured.
- the diameter of the dot 21 has a specific value as an example, but the size is not necessarily limited thereto.
- the diameter DD of the dot 21 is, for example, 0.01 mm or more, more preferably 0.05 mm or more, further preferably 0.1 mm or more, and, for example, 5.0 mm or less, preferably 2.0 mm or less, more preferably Is 1.0 mm or less, and more preferably 0.5 mm or less.
- the distance AD from the center of one dot 21 to the center of another adjacent dot 21 is, for example, 0.1 mm or more, preferably 0.2 mm or more, more preferably 0.3 mm or more, and, for example, It is considered to be 5.0 mm or less, preferably 3.0 mm or less, more preferably 1.0 mm or less.
- the distance AD/diameter DD is preferably more than 1.0, more preferably 1.1 or more, even more preferably 1.2 or more, and preferably 2.0 or less, more preferably 1.8 or less, further It is considered to be preferably 1.5 or less. In any case, in this embodiment, the dimensional variation is suppressed to ⁇ 10% or less, preferably 6% or less, and more preferably 2% or less.
- the removing step (S104) patterning is performed using laser light. Therefore, the thin film 13a on the curved optical surface can be patterned with high accuracy, and stable quality can be secured for the spectacle lens 10 to be manufactured. Further, since the thin film 13a can be directly patterned by using the laser light, the formation and removal of the resist pattern can be omitted, and the complexity of the processing steps for patterning can be suppressed.
- the difference between the transmittance with respect to the lens substrate 11 and the transmittance with respect to the thin film 13a as the laser light emitted in the removing step (S104) is 1% or more, preferably 3% or more, and more preferably Laser light having a wavelength of 5% or more, and more preferably 10% or more is used.
- the transmittance difference is 1% or more, preferably 3% or more, and more preferably Laser light having a wavelength of 5% or more, and more preferably 10% or more is used.
- the transmittance for the HC film 12 is different from the transmittance for the thin film 13a.
- Laser light having a wavelength belonging to a wavelength band of 1% or more, preferably 3% or more, more preferably 5% or more, still more preferably 10% or more is used. Therefore, even when the HC film 12 is formed on the optical surface of the lens substrate 11, it is possible to directly perform patterning on the thin film 13a using laser irradiation.
- the spectacle lens 10 when the optical substrate is the lens substrate 11 and the optical member is the spectacle lens 10, the spectacle lens 10 may have a curved optical surface. Although it is general, even in that case, highly accurate patterning can be performed, so that stable quality of the spectacle lens 10 can be ensured.
- the thin film 13a is a SnO2 film or a Cr film
- the thin film 13a is not limited to the SnO2 film or the Cr film, and any other metal oxide film or metal film may be applied as long as it is an absorbing metal oxide film or a metal film. Is possible, and even in that case, the same effect can be obtained.
- the dimensional variation of each dot 21 forming the pattern portion 20 is ⁇ 10% or less, preferably 6% or less, more preferably It is less than 2%.
- the optical surface is a curved surface, for example, in the ink jet recording method, dimensional variation of more than ⁇ 10% occurs, but if patterning is performed by irradiating laser light while corresponding to three-dimensional control of the focal position, It is possible to suppress the dimensional variation of ⁇ 10% or less, preferably 6% or less, more preferably 2% or less. Therefore, even in the pattern portion 20 configured by arranging a plurality of dots 21, the patterning can be performed with high accuracy.
- the optical surface is a curved surface
- the maximum dimensional variation is ⁇ 10% or less, preferably 6% or less. More preferably, by suppressing the amount to 2% or less, the patterning on the thin film 13a can be made highly accurate, and it is very suitable for securing stable quality of the spectacle lens 10.
- the pattern portion 20 constitutes a dot pattern.
- the uniformity of each dot is very important in obtaining the effect as the dot pattern (for example, the effect of suppressing the amount of transmitted light). Even in that case, as described in this embodiment, if the dimensional variation of each dot is ⁇ 10% or less, the effect of the dot pattern can be surely obtained.
- the pattern portion 20 has a laser processing mark on the base surface exposed by removing the thin film 13a. If the pattern portion 20 has a laser processing mark, it is clear that the pattern portion 20 was formed by partially removing the thin film 13a by irradiation of laser light. In the case of the pattern portion 20 formed by using the laser light, the thin film 13a on the curved optical surface is patterned by corresponding to the three-dimensional control of the focus position when the laser light is irradiated. Even in this case, the patterning can be performed with high accuracy. Therefore, it is very suitable for ensuring stable quality of the spectacle lens 10.
- the patterning thin film 13 is formed on the HC film 12 is taken as an example, but the present invention is not limited to this. That is, the patterning thin film 13 may be directly formed on the lens substrate 11 without interposing the HC film 12, or may be a film of a type other than the HC film 12 interposed. It may be formed by.
- the pattern portion 20 is a dot pattern configured by a plurality of dots (the same shape portion) 21 is taken as an example, but the present invention is not limited to this. That is, the pattern portion 20 may be formed of, for example, characters or figures instead of being formed of the dots 21. Further, the pattern portion 20 may be formed partially instead of the entire optical surface of the spectacle lens 10. Further, fine dots 21 may be gathered to form a character or a figure.
- SYMBOLS 10 Glasses lens (optical member), 11... Lens base material (optical base material), 12... HC film (non-removal film), 13... Patterning thin film, 13a... Thin film, 14... AR film, 20... Pattern part, 21 ... Dots (same shape part)
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Abstract
Description
本発明の第1の態様は、
曲面状の光学面を有する光学基材の前記光学面上に薄膜を形成する成膜工程と、
前記光学面上の前記薄膜を部分的に除去して当該薄膜のパターニングを行う除去工程と、を備え、
前記除去工程では、レーザ光の照射により前記薄膜の除去を行う
光学部材の製造方法である。
前記除去工程では、前記レーザ光の照射を当該レーザ光の焦点位置の三次元制御に対応したレーザ加工機を用いて行う
第1の態様に記載の光学部材の製造方法である。
前記除去工程で照射するレーザ光として、前記光学基材に対する透過率と前記薄膜に対する透過率との差が1%以上である波長帯に属する波長のレーザ光を用いる
第1または第2の態様に記載の光学部材の製造方法である。
前記光学基材と前記薄膜との間に、前記薄膜とは異種材料の膜を非除去膜として形成する非除去膜形成工程を備え、
前記除去工程で照射するレーザ光として、前記光学基材に対する透過率に加え、前記非除去膜に対する透過率についても、前記薄膜に対する透過率との差が1%以上である波長帯に属する波長のレーザ光を用いる
第3の態様に記載の光学部材の製造方法である。
前記光学部材は、眼鏡レンズである
第1から第4のいずれかの1態様に記載の光学部材の製造方法である。
前記薄膜は、吸収を有する酸化金属膜または金属膜である
第1から第5のいずれかの1態様に記載の光学部材の製造方法である。
前記除去工程でのパターニングによって形成されるパターン部は、前記光学面上に複数の同一形状部分が配されて構成されているとともに、前記同一形状部分のそれぞれの寸法ばらつきが±10%以下である
第1から第6のいずれかの1態様に記載の光学部材の製造方法である。
曲面状の光学面を有する光学基材と、
前記光学基材の前記光学面上に形成される薄膜と、
前記薄膜が部分的に除去されてなるパターン部と、を備え、
前記パターン部は、前記光学面上に複数の同一形状部分が配されて構成されている
光学部材である。
前記パターン部は、前記複数の同一形状部分のそれぞれの寸法ばらつきが±10%以下である
第8の態様に記載の光学部材である。
前記パターン部は、前記光学面の中心近傍に配された前記同一形状部分と前記光学面の周縁近傍に配された前記同一形状部分との寸法ばらつきが±10%以下である
第9の態様に記載の光学部材である。
前記パターン部は、ドットパターンを構成するものであり、
前記同一形状部分は、前記ドットパターンにおけるドットを構成するものである
第8から第10のいずれか1態様に記載の光学部材である。
前記パターン部は、前記薄膜が除去されて露出する下地面にレーザ加工痕を有する
第8から第11のいずれかの1態様に記載の光学部材である。
前記光学部材は、眼鏡レンズである
第8から第12のいずれかの1態様に記載の光学部材である。
前記薄膜は、吸収を有する酸化金属膜または金属膜である
第8から第13のいずれかの1態様に記載の光学部材である。
まず、本実施形態で例に挙げる眼鏡レンズの概略構成について説明する。
図1は本実施形態で例に挙げる眼鏡レンズの構成例を示す平面図であり、図2はその断面図である。
眼鏡レンズ10は、光学面として、物体側の面と眼球側の面とを有する。「物体側の面」は、眼鏡レンズ10を備えた眼鏡が装用者に装用された際に物体側に位置する表面である。「眼球側の面」は、その反対、すなわち眼鏡レンズ10を備えた眼鏡が装用者に装用された際に眼球側に位置する表面である。物体側の面は凸面であり、眼球側の面は凹面であること、つまり眼鏡レンズ10はメニスカスレンズであることが一般的である。
レンズ基材11は、光学レンズに用いられる一般的な樹脂材料からなり、所定のレンズ形状に成形されてなるものである。つまり、レンズ基材11は、所定のレンズ形状を構成するための光学面を、物体側の面と眼球側の面とのそれぞれに有する。所定のレンズ形状は、単焦点レンズ、多焦点レンズ、累進屈折力レンズ等のいずれを構成するものであってもよい。いずれのレンズ形状の場合であっても、レンズ基材11におけるそれぞれの光学面は、少なくとも一方(一般的には両方)が曲面状となる。
レンズ基材11を構成する樹脂材料は、例えば屈折率(nD)1.50~1.74程度のものが用いられる。このような樹脂材料としては、例えば、アリルジグリコールカーボネート、ウレタン系樹脂、ポリカーボネート、チオウレタン系樹脂およびエピスルフィド樹脂が例示される。なお、レンズ基材11は、上述した樹脂材料ではなく、所望の屈折度が得られる他の樹脂材料によって構成してもよいし、また無機ガラスによって構成したものであってもよい。
HC膜12は、例えば、ケイ素化合物を含む硬化性材料を用いて構成されたもので、3μm~4μm程度の厚さで形成された膜である。HC膜12の屈折率(nD)は、上述したレンズ基材11の材料の屈折率に近く、例えば1.49~1.74程度であり、レンズ基材11の材料に応じて膜構成が選択される。このようなHC膜12の被覆によって、眼鏡レンズ10の耐久性向上が図れるようになる。
パターニング薄膜13は、レンズ基材11の光学面上にHC膜12を介して形成されたもので、例えば、数nm~数十nm程度の厚さの薄膜によって構成されたものである。パターニング薄膜13を構成する材料としては、例えば、後述するレーザ光を吸収する特性を有した金属または酸化金属を用いる。つまり、パターニング薄膜13は、吸収を有する酸化金属膜または金属膜である。このような膜としては、例えば、クロム(Cr)、タンタル(Ta)、ニオブ(Nb)、チタン(Ti)、ジルコニウム(Zr)、金(Au)、銀(Ag)、スズ(Sn)およびアルミニウム(Al)の中から選ばれる少なくとも一種の金属または酸化金属を含む膜であり、好ましくは二酸化スズ(SnO2)膜またはCr膜である。以下の説明では、主として、パターニング薄膜13がSnO2膜またはCr膜である場合を例に挙げる。
つまり、本実施形態において、パターン部20は所定パターンであるドットパターンを構成するものであり、同一形状部分21はドットパターンにおけるドット21を構成するものである。
AR膜14は、屈折率の異なる膜を積層させた多層構造を有し、干渉作用によって光の反射を防止する膜である。ただし、必ずしも多層構造である必要はなく、光の反射防止効果が得られれば、単層構造であってもよい。
AR膜14が低屈折率層と高屈折率層との多層構造である場合、低屈折率膜は、例えば、屈折率1.43~1.47程度の二酸化珪素(SiO2)からなる。また、高屈折率膜は、低屈折率膜よりも高い屈折率を有する材料からなり、例えば、酸化ニオブ(Nb2O5)、酸化タンタル(Ta2O5)、酸化チタン(TiO2)、酸化ジルコニウム(ZrO2)、酸化イットリウム(Y2O3)、さらには酸化アルミニウム(Al2O3)等の金属酸化物を、適宜の割合で用いて構成される。
このようなAR膜14の被覆によって、眼鏡レンズ10を透した像の視認性向上が図れるようになる。
次に、上述した構成の眼鏡レンズ10を製造する手順、すなわち本実施形態に係る眼鏡レンズの製造方法の手順の一例について、具体的に説明する。
図3は、本実施形態に係る製造方法の手順の一例を示すフロー図である。
眼鏡レンズ10の製造にあたっては、まず、第1の工程として、光学基材であるレンズ基材11を用意する(ステップ101、以下ステップを「S」と略す。)。
ここで、第4の工程として行う除去工程(S104)について、さらに詳しく説明する。
このときのレーザ光の照射は、当該レーザ光の焦点位置の三次元制御に対応したレーザ加工機を用いて行う。
ところで、除去工程(S104)で照射するレーザ光は、薄膜13aを部分的に除去するためのものであり、薄膜13a以外のレンズ基材11およびHC膜12には照射によるダメージ等を与えないことが望ましい。そこで、本実施形態においては、除去工程(S104)でのレーザ光の照射にあたり、以下のような波長のレーザ光を用いる。
なお、透過率差の上限は、レンズ基材11、HC膜12、薄膜13a等がいずれも光透過性を有すること考慮すると、50%程度である。
ここで、除去工程(S104)でのパターニングによって形成されるパターン部20について、具体例を挙げて説明する。
また、眼鏡レンズ10の光学面の中心近傍に配されたドットパターンを構成するドット21と、同光学面の周縁近傍に配されたドットパターンを構成するドット21とを比べてみても、それぞれの寸法ばらつきが±10%以下、好ましくは6%以下、より好ましくは2%以下となっている。
ここでいう「寸法ばらつき」とは、(1)平面視したときに略真円形状の各ドット21の間の径寸法のばらつきと、(2)あるドット21における縦横の径寸法(アスペクト比)のばらつき、の少なくとも一方、好ましくは両方のことをいう。具体的には、上記(1)については、光学面の中心近傍および周縁近傍のいずれにおいても、各ドット21の径の寸法ばらつきが、例えば、440±44μm以下、好ましくは440±26μm以下、より好ましくは440±8μm以下に収まっている。また、上記(2)についても、各ドット21のアスペクト比のばらつきが、例えば、440±44μm以下、好ましくは440±26μm以下、より好ましくは440±8μm以下に収まっている。
図6は、本実施形態に係る眼鏡レンズにおけるパターン部についてのレーザ顕微鏡による観察結果の一具体例を示す説明図である。
図例のように、レーザ加工によって形成されたパターン部20は、レーザ顕微鏡によって観察すれば、薄膜13aが除去されて露出する下地面に、除去工程(S104)でレーザ光を照射した際のスキャンの跡に沿ったレーザ加工痕が存在することが認識できる。つまり、パターン部20を構成する各ドット21がレーザ加工痕を有していれば、それぞれのドット21は、レーザ光の照射により薄膜13aを部分的に除去して形成されたことが明らかであると認められる。
ドット21の直径DDは、例えば、0.01mm以上、より好ましくは0.05mm以上、さらに好ましくは0.1mm以上であり、そして、例えば、5.0mm以下、好ましくは2.0mm以下、より好ましくは1.0mm以下、さらに好ましくは0.5mm以下とすることが考えられる。
また、あるドット21の中心から隣接する他のドット21の中心までの間隔ADは、例えば、0.1mm以上、好ましくは0.2mm以上、より好ましくは0.3mm以上であり、そして、例えば、5.0mm以下、好ましくは3.0mm以下、より好ましくは1.0mm以下とすることが考えられる。
間隔AD/直径DDは、好ましくは1.0超、より好ましくは1.1以上、さらに好ましくは1.2以上であり、そして、好ましくは2.0以下、より好ましくは1.8以下、さらに好ましくは1.5以下とすることが考えられる。
いずれの場合においても、本実施形態において、寸法ばらつきは、±10%以下、好ましくは6%以下、より好ましくは2%以下に抑えられているものとする。
本実施形態によれば、以下に示す1つまたは複数の効果が得られる。
特に、光学面が曲面状である場合、特に光学面の中心近傍と周縁近傍とで最大寸法ばらつきが生じてしまう可能性が高いが、その最大寸法ばらつきを±10%以下、好ましくは6%以下、より好ましくは2%以下に抑えることで、薄膜13aへのパターニングの高精度化が図れ、眼鏡レンズ10について安定した品質を確保する上で非常に好適なものとなる。
以上に本発明の実施形態を説明したが、上述した開示内容は、本発明の例示的な実施形態を示すものである。すなわち、本発明の技術的範囲は、上述の例示的な実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。
Claims (14)
- 曲面状の光学面を有する光学基材の前記光学面上に薄膜を形成する成膜工程と、
前記光学面上の前記薄膜を部分的に除去して当該薄膜のパターニングを行う除去工程と、を備え、
前記除去工程では、レーザ光の照射により前記薄膜の除去を行う
光学部材の製造方法。 - 前記除去工程では、前記レーザ光の照射を当該レーザ光の焦点位置の三次元制御に対応したレーザ加工機を用いて行う
請求項1に記載の光学部材の製造方法。 - 前記除去工程で照射するレーザ光として、前記光学基材に対する透過率と前記薄膜に対する透過率との差が1%以上である波長帯に属する波長のレーザ光を用いる
請求項1または2に記載の光学部材の製造方法。 - 前記光学基材と前記薄膜との間に、前記薄膜とは異種材料の膜を非除去膜として形成する非除去膜形成工程を備え、
前記除去工程で照射するレーザ光として、前記光学基材に対する透過率に加え、前記非除去膜に対する透過率についても、前記薄膜に対する透過率との差が1%以上である波長帯に属する波長のレーザ光を用いる
請求項3に記載の光学部材の製造方法。 - 前記光学部材は、眼鏡レンズである
請求項1から4のいずれか1項に記載の光学部材の製造方法。 - 前記薄膜は、吸収を有する酸化金属膜または金属膜である
請求項1から5のいずれか1項に記載の光学部材の製造方法。 - 前記除去工程でのパターニングによって形成されるパターン部は、前記光学面上に複数の同一形状部分が配されて構成されているとともに、前記同一形状部分のそれぞれの寸法ばらつきが±10%以下である
請求項1から6のいずれか1項に記載の光学部材の製造方法。 - 曲面状の光学面を有する光学基材と、
前記光学基材の前記光学面上に形成される薄膜と、
前記薄膜が部分的に除去されてなるパターン部と、を備え、
前記パターン部は、前記光学面上に複数の同一形状部分が配されて構成されている
光学部材。 - 前記パターン部は、前記複数の同一形状部分のそれぞれの寸法ばらつきが±10%以下である
請求項8に記載の光学部材。 - 前記パターン部は、前記光学面の中心近傍に配された前記同一形状部分と前記光学面の周縁近傍に配された前記同一形状部分との寸法ばらつきが±10%以下である
請求項9に記載の光学部材。 - 前記パターン部は、ドットパターンを構成するものであり、
前記同一形状部分は、前記ドットパターンにおけるドットを構成するものである
請求項8から10のいずれか1項に記載の光学部材。 - 前記パターン部は、前記薄膜が除去されて露出する下地面にレーザ加工痕を有する
請求項8から11のいずれか1項に記載の光学部材。 - 前記光学部材は、眼鏡レンズである
請求項8から12のいずれか1項に記載の光学部材。 - 前記薄膜は、吸収を有する酸化金属膜または金属膜である
請求項8から13のいずれか1項に記載の光学部材。
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| CN202311438851.XA CN117270234B (zh) | 2018-12-28 | 2019-12-25 | 光学部件的制造方法及光学部件 |
| CN201980071954.2A CN112969958B (zh) | 2018-12-28 | 2019-12-25 | 光学部件的制造方法及光学部件 |
| EP19904988.3A EP3904949A4 (en) | 2018-12-28 | 2019-12-25 | MANUFACTURING PROCESS FOR OPTICAL ELEMENT AND OPTICAL ELEMENT |
| JP2020563333A JP7202397B2 (ja) | 2018-12-28 | 2019-12-25 | 光学部材の製造方法および光学部材 |
| US17/418,432 US12360394B2 (en) | 2018-12-28 | 2019-12-25 | Method for manufacturing optical member and optical member |
| JP2022186595A JP7629896B2 (ja) | 2018-12-28 | 2022-11-22 | 光学部材 |
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| JP2018-246478 | 2018-12-28 | ||
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| JP2018246478 | 2018-12-28 |
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| PCT/JP2019/050745 Ceased WO2020138134A1 (ja) | 2018-12-28 | 2019-12-25 | 光学部材の製造方法および光学部材 |
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| Country | Link |
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| US (1) | US12360394B2 (ja) |
| EP (1) | EP3904949A4 (ja) |
| JP (2) | JP7202397B2 (ja) |
| CN (2) | CN117270234B (ja) |
| WO (1) | WO2020138134A1 (ja) |
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| JP2024522399A (ja) * | 2021-05-28 | 2024-06-19 | サイトグラス・ヴィジョン・インコーポレイテッド | 近視の進行を弱めるための眼科用レンズおよびそれを形成するためのレーザベースの方法 |
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| KR20240028513A (ko) * | 2021-12-22 | 2024-03-05 | 호야 렌즈 타일랜드 리미티드 | 안경 렌즈의 제조 방법, 안경 렌즈, 및 안경 |
| IT202200016152A1 (it) * | 2022-07-29 | 2024-01-29 | Luxottica Srl | Lente per occhiali a specchiatura selettiva e metodo per la realizzazione di una lente a specchiatura selettiva. |
| CN115519326A (zh) * | 2022-10-14 | 2022-12-27 | 西安交通大学 | 金属材质的防近视眼镜镜片模具的制备方法 |
| CN117631319A (zh) * | 2023-11-08 | 2024-03-01 | 江苏康耐特光学有限公司 | 一种矫正近视用屈光力的眼镜片 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US12360394B2 (en) | 2025-07-15 |
| CN112969958A (zh) | 2021-06-15 |
| CN117270234A (zh) | 2023-12-22 |
| EP3904949A1 (en) | 2021-11-03 |
| JP2023022149A (ja) | 2023-02-14 |
| JPWO2020138134A1 (ja) | 2021-10-07 |
| CN117270234B (zh) | 2026-04-10 |
| JP7202397B2 (ja) | 2023-01-11 |
| EP3904949A4 (en) | 2022-08-17 |
| CN112969958B (zh) | 2023-11-14 |
| US20210397020A1 (en) | 2021-12-23 |
| JP7629896B2 (ja) | 2025-02-14 |
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