WO2005118246A1 - 成形型の設計方法、成形型及び成形品 - Google Patents
成形型の設計方法、成形型及び成形品 Download PDFInfo
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- WO2005118246A1 WO2005118246A1 PCT/JP2005/009982 JP2005009982W WO2005118246A1 WO 2005118246 A1 WO2005118246 A1 WO 2005118246A1 JP 2005009982 W JP2005009982 W JP 2005009982W WO 2005118246 A1 WO2005118246 A1 WO 2005118246A1
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- Prior art keywords
- curved surface
- shape
- molded product
- design
- correction information
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3835—Designing moulds, e.g. using CAD-CAM
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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
-
- 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
- B29D11/00413—Production of simple or compound lenses made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges
-
- 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
- B29D11/0048—Moulds for lenses
- B29D11/00538—Feeding arrangements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
Definitions
- the present invention relates to a molding die design method for designing a molding die for molding a molded product having a desired shape by correcting a shape change of the molded product when molding the molded product (for example, an optical lens) from the molding die.
- the present invention also relates to a molding die designed by the method for designing a molding die, and a molded product molded by the molding die.
- the design value of the optical lens is used as it is for the mold, and then the mold is designed and manufactured.
- the optical lens is manufactured using the mold, the optical lens is manufactured in the same shape as the design value. May not be. The reason for this is that the molding surface of the mold is not accurately transferred to the lens surface due to molding shrinkage depending on the material and stress due to the shape of the optical lens.
- the molded optical lens when the optical lens is molded using a molding die having a spherical molding surface that forms a spherical lens, the molded optical lens may have a surface shape other than a spherical surface including an aspherical shape. Therefore, when designing a mold, it is necessary to take into account these various factors and add appropriate shape correction to the mold.
- the correction amount of the molding surface of these molds differs depending on the refractive power of the optical lens, the lens material, and the shape of the designed curved surface, and the combination tends to be complicated. To determine the appropriate amount of correction, it is necessary to experimentally verify the actual deformation in each mold.
- Specific operations include (a) test molding all types of optical lenses using a corresponding mold, and (b) measuring errors with respect to design values of the optical lenses. Then, (c) multiply the measured error by various coefficients to calculate a temporary correction amount (empirical value) and recreate the mold. (D) Test-mold the optical lens again with the reshaped mold, and (e) measure the shape error of the optical lens. It is a general method to optimize the correction by repeating the above (c) to (e).
- the astigmatic refractive power corresponding to the astigmatism prescription is in the range of 0.25 diopter (D) to 2.00 diopter one (D), and the unit of the refractive power is 0.25D pitch, the type of astigmatism is 8 Kind is required. Therefore, when the spherical and astigmatic prescriptions are combined, it is necessary to support 448 types of lens powers in one product, and since the mold is composed of the upper and lower molds, the total is 896 types .
- the correction method applied to the molding surface of the molding die involves a single curvature using the least squares method so that the error between the molded optical lens and the design value of the optical lens is minimized.
- a method is known in which a spherical shape having the following is obtained, and the curvature of the spherical shape is used as an average curvature to correct a molding die (first conventional technique).
- Patent Document 1 As a second conventional technique, in the case of a simple shape, a deformation in consideration of shrinkage can be predicted, and there is a method of applying the predicted value as a correction amount (Patent Document 1). .
- a three-dimensional shape is measured by an aspherical measuring device, a shape error from a design value is obtained, and correction is performed based on the shape error measurement value excluding a setting error for the measuring device.
- Patent Document 2 There is also a method (Patent Document 2).
- Patent Document 1 JP-A-2003-117925
- Patent Document 2 JP-A-8-216272
- an ophthalmic lens has a meniscus shape having convex and concave forces, and the shape is complicated. It is difficult to design a mold by predicting the amount of deformation in consideration of shrinkage.
- the shape error measurement value includes noise such as the roughness of the lens surface and the influence of foreign matter or the like attached to the lens surface. . For this reason, noise other than the shape error is reflected in the correction amount, and the accuracy of the correction is reduced, and the molding force may not be able to mold the optical lens with high accuracy.
- An object of the present invention has been made in view of the above-described circumstances, and corrects a shape deformation of a molded product when the molded product is molded from a molding die, thereby obtaining a desired shape having a curved surface of an aspherical surface. It is an object of the present invention to provide a molding die capable of efficiently designing a molding die for molding a molded product, and a method of designing the molding die.
- Another object of the present invention is to provide a molded product using the above mold. Means for solving the problem
- the method of designing a molding die according to claim 1 provides a molding die whose molding surface is formed into a spherically designed curved surface of a molded product, and uses the curved surface shape of the molded product molded from this molding die.
- the measured curved surface of the molded product is compared with the designed curved surface of the molded product to determine an error between the two curved surfaces, and information corresponding to the error is used to form a molded product having a curved spherical surface.
- the design value of the molding surface of the molding die that molds the molded product with the aspherical curved surface is corrected using the above correction information that is suitable for the molded product with the aspherical curved surface. It is characterized by designing.
- a method of designing a molding die according to claim 2 is the method according to claim 1, wherein the correction information suitable for a molded article having an aspherical curved surface is a curved surface to be molded.
- the correction information suitable for a molded article having an aspherical curved surface is a curved surface to be molded.
- the method for designing a molding die according to claim 3 provides a molding die whose molding surface is formed into a spherically designed curved surface of a molded product and prepares a curved surface shape of the molded product molded from this molding die. Measure and approximate the measured value to the aspheric surface equation to identify the curved surface of the molded product as an aspheric surface.
- the expression of the non-spherical surface includes a spherical component on the curved surface of the molded product and a spherical component on the curved surface of the molded product. It is a polynomial including components other than.
- a method for designing a molding die according to claim 5 is the invention according to claim 3 or 4, wherein the expression of the aspheric surface is a spherical component on the curved surface of the molded product and a spherical component on the curved surface of the molded product. It is characterized by adding components other than the shape.
- the method for designing a molding die according to claim 6 is the invention according to any one of claims 3 to 5, wherein the expression of the aspheric surface is such that: Z is the axis of the molding from the vertex of the molding.
- K is conic constant
- the overall shape correction information for correcting the overall shape of the molding surface of the molding die formed on the spherical design curved surface of the molded product is obtained.
- the polynomial component, which is the second term in (1), is used to calculate the shape of the molded product from the spherical surface to the curved surface.
- local shape correction information for correcting the local shape of the molding surface of the molding die formed on the design curved surface of the spherical shape of the molded product is obtained. It is characterized in that a database is created for each of the characteristics of the molded product having a spherical design curved surface separately and independently.
- the characteristic is determined based on the difference between the radius of curvature of the reference spherical surface represented by the spherical component and the radius of curvature of the spherical design surface of the molded product.
- a method of designing a molding die according to claim 9 is the invention according to claim 7 or 8, wherein the local shape correction information is obtained by converting the polynomial component, which is the second term of equation (1), into The shape change calculated using the height ( ⁇ value) of the component other than the spherical shape on the curved surface of the molded product and the height ( ⁇ value) of the designed curved surface of the spherical shape of the molded product It is characterized in that it is determined on the basis of the rate, and the above-mentioned shape change rate is stored in a database.
- a method of designing a molding die according to claim 10 is the invention according to any one of claims 3 to 9, wherein the characteristic of the molded product is a lens material of an optical lens which is the molded product and a spherical shape. Of the design curved surface.
- a method for designing a molding die according to claim 11 is the method according to any one of claims 3 to 10, wherein the molding surface of the molding die for molding a final molded product having an aspherical curved surface.
- the design is performed by adding the entire shape correction information and the local shape correction information in a database that are compatible with the molded product having the aspherical surface to the aspherical design surface of the molded product. It is a feature.
- the method of designing a molding die according to claim 12 is the invention according to claim 11, wherein the entire shape correction information in a database adapted to a final molded product having an aspherical curved surface.
- the local shape correction information, the curvature radius to be molded is the same lens material as that of the aspherical molded product, and the radius of curvature that matches the average radius of curvature of the aspherical design curved surface of the molded product is It is characterized in that it is the entire shape correction information and the local shape correction information that are databased for the design curved surface of the spherical molded product.
- a molding die according to claim 13 is characterized by being formed by performing the method of designing a molding die according to any one of claims 1 to 12.
- a molded article according to claim 14 is characterized by being molded using the mold according to claim 13.
- the molded article according to claim 15 is characterized in that the molded article according to claim 14 is a meniscus-shaped spectacle lens.
- information corresponding to an error between the measured curved surface of the molded product and the design curved surface of the spherical shape of the molded product is obtained by molding the molded product having the spherical curved surface.
- the design value of the molding surface of a molding die that molds a molded product with an aspherical curved surface is specified using the above-mentioned correction information that is suitable for the molded product with the aspherical curved surface. Correct and design.
- correction information suitable for a molded product having an aspherical curved surface correction information for correcting the design value of a molding surface of a molding die for molding a molded product having an aspherical curved surface can be obtained in a short time. Can be determined. As a result, it is possible to efficiently design a molding surface of a mold for molding a molded product having a desired shape having a curved aspheric surface.
- a molded product is molded from a molding die whose molding surface is formed into a spherically designed curved surface of the molded product. Is measured, the measured value is approximated to an aspherical surface equation, and the curved surface of the molded article is specified as an aspherical surface. From this, it is possible to quantify and specify not only the spherical surface component but also the component other than the spherical surface in the curved surface shape of the molded article by approximating the aspherical expression.
- the error between the curved surface of the molded product specified as an aspheric surface and the designed curved surface of the spherical shape of the molded product is obtained by accurately incorporating the spherical shape component and the component other than the spherical shape. Is also accurate.
- the measured value of the curved surface shape of the molded article is approximated to an aspherical expression, and the curved surface shape of the molded product is determined as an aspheric surface by quantitative determination. It is possible to extract only the surface shape of the curved surface of the molded article by eliminating noise such as difference and surface roughness of the curved surface of the molded article. Further, information corresponding to an error between the curved surface of the molded product specified by the aspherical formula and the design curved surface of the spherical shape of the molded product is used as correction information for molding a molded product having a spherical curved surface. A database is created for each characteristic of the molded article.
- the correction information for correcting the design value of the molding surface of a molding die for molding a molded product having an aspherical surface shape is obtained by extracting correction information suitable for a molded product having an aspherical curved surface into a database. It can be fixed in time.
- overall shape correction information for correcting the overall shape of the molding surface of the molding die formed on the spherical design curved surface of the molded product is obtained.
- the polynomial component which is the second term of the above equation (1), is formed on the spherically designed surface of the molded article.
- Local shape correction information for correcting a local shape of the molding surface of the molding die is obtained.
- the molding surface of the molding die can be designed by performing appropriate correction by reflecting the information.
- FIG. 1 is a side sectional view showing a mold having an upper mold and a lower mold manufactured by carrying out the first embodiment of the method of designing a mold according to the present invention.
- FIG. 5 is a graph showing a molding curved surface, a design curved surface, and the like of an optical lens which is a molded product subjected to a test molding force test molding in FIG.
- FIG. 7 is a schematic diagram showing calculation of overall shape correction information and local shape correction information in the design procedure of the upper mold and the lower mold of FIG.
- a molding die 10 shown in FIG. 1 is for molding a plastic spherical lens by a production method called a casting method, and includes an upper mold 11, a lower mold 12, and a gasket 13.
- the upper mold 11 and the lower mold 12 are collectively referred to as a lens matrix.
- the gasket 13 is formed in a cylindrical shape with an elastic resin, and keeps the upper mold 11 and the lower mold 12 apart from each other by a predetermined distance on the inner peripheral surface to maintain liquid tightness.
- a cavity 14 is constituted by the upper mold 11, the lower mold 12 and the gasket 13.
- the gasket 13 is provided with an injection part 15 for injecting a monomer, which is a raw material of an optical lens, into the cavity 14. Further, the height of the gasket 13 is set to a dimension that can secure the thickness of the peripheral portion of the optical lens which is a molded product.
- the upper mold 11 and the lower mold 12 are made of glass or the like.
- the upper mold 11 is formed in a concave shape so as to form a curved surface (convex surface) of the optical lens.
- the lower mold 12 is formed in a convex shape so as to form a curved surface (concave surface) of the optical lens.
- the surface forming the lens curved surface of the optical lens is called a used surface 16, and the surface not forming the lens curved surface is used. Not used surface 17
- a monomer that is a raw material of an optical lens is prepared (Sl).
- This monomer is a thermosetting resin, which is prepared by adding a catalyst and an ultraviolet absorber to the resin, and filtered with a filter (S2).
- the upper mold 11 and the lower mold 12 are assembled to the gasket 13 to complete the mold 10 (S3).
- the monomer prepared as described above is injected into the cavity 14 of the molding die 10, and is heated and polymerized in an electric furnace to be cured (S4).
- S5 the polymerization of the monomer
- the optical lens is classified into a finished product and a semi-finished product (semi-finished product), and the second surface is polished for the semi-finished product according to the prescription.
- a dyeing process to obtain a color product
- a strengthening coating process to strengthen against scratches
- an anti-reflection coating process for anti-reflection (S7) to anti-reflection
- S8 final inspection
- the finished product becomes a product after this final inspection (S9).
- the upper mold 11 and the lower mold 12 can be obtained by pressing both sides of the pressed thickness! And glass blanks.
- these glass blanks are prepared (S11).
- the surface defect layer on the pressed surface of the glass blunter is removed, and the used surface 16 and the non-used surface 17 are set to a predetermined radius of curvature.
- Use surface 16 and non-use surface 17 are obtained.
- the above calorie of the glass blantus is performed by grinding and polishing.
- a diamond wheel is used for a free-form surface grinder that performs NC control, and both surfaces (used surface 16 and non-used surface 17) of the glass blantus are provided with a predetermined radius of curvature. (S12).
- the upper mold 11 and the lower mold 12 are formed from the glass blantus.
- the polishing step was performed by using a polishing dish in which polyurethane or felt was adhered to a rubber hollow dish and using fine particles such as cerium oxide and zirconium oxide as an abrasive, and formed by grinding. Both surfaces of the upper mold 11 and the lower mold 12 are polished (S13). This grinder According to the process, the surface irregularities on the used surface 16 and the non-used surface 17 of the upper mold 11 and the lower mold 12 generated in the grinding process are removed to make the surface transparent (graining). Further, the used surface 16 and the non-used surface 17 are effectively finished to a sufficient surface accuracy.
- the upper mold 11 and the lower mold 12 are inspected (S14), and a hidden mark serving as a reference position of the layout pattern is marked on the use surface 16 (S15).
- the layout pattern indicates the optical layout of the optical lens, and is used when a circular optical lens is framed in an eyeglass frame. This layout pattern is erasably marked on the surface of the optical lens.
- a molding die 10 for test molding an optical lens as a molded product is prepared.
- the optical lens to be molded is a spherical lens having a spherical curved surface. Therefore, the use surface 16 as the molding surface in the upper mold 11 and the lower mold 12 of the molding die 10 is also formed in a spherical shape.
- the radius of curvature of the use surface 16 of the upper mold 11 and the lower mold 12 is a set value of the curved surface of the optical lens (for example, a design vertex radius of curvature R which is a radius of curvature of the vertex power of the lens).
- the curved surface of the optical lens having 0 is referred to as a design curved surface 20 (FIG. 5).
- a molding test is performed using the mold 10 having the above-described upper mold 11 and lower mold 12, a monomer is injected into the mold 10, and heat polymerization is performed to obtain a test molded article. Mold the optical lens.
- the curved shape of the test-molded optical lens is not formed into a spherical shape due to thermal shrinkage of the monomer.
- the present inventor has found that the main component of the amount of error due to a shape change after molding is approximated by an aspherical surface expression expressed by the following expression (1). I found what I could do. That is, the curved surface shape of the test-formed optical lens is formed into a shape other than a spherical surface including an aspherical shape.
- the curved shape of the surface of the formed optical lens is measured using a shape measuring device with reference to a transfer marking 32 (FIG. 9) described later (S21 in FIG. 7). Then, the measured value is approximated to an aspherical surface equation using the least squares method, and the curved surface of the test-formed optical lens is quantitatively determined and specified as an aspherical surface.
- Equation (1) is also referred to as Spencer's equation.
- equation (2) which is a modification of equation (1), is used to facilitate the calculation, and the measured values are approximated to equation (2) using the least squares method and quantified.
- equation (2) the coefficient including the vertex curvature C and the aspherical coefficient A of the equation (1).
- i of the coefficient B is an integer.
- Equation (1) Equation (2)
- the curved surface shape of the test-molded optical lens specified by the equation (1) is shown as a formed curved surface 21 in FIG.
- the formed curved surface 21 has an aspherical shape.
- ZN in FIG. 5 represents a component other than the spherical shape of the molding curved surface 21 of the optical lens quantified and specified by the equation (1), and is the second term of the equation (1). Shows polynomial components.
- the polynomial component indicated by ZN is an error component with respect to the reference spherical component of the first term of equation (1), as shown by reference numeral 23 in FIG. / Puru.
- the data of the optical lens specified by test molding and quantitatively determined by the equation (1) is analyzed (S22 in FIG. 7).
- the vertex curvature C vertex curvature radius R
- the aspherical coefficients A, A, A, and A of Expression (1) are used.
- the vertex radius of curvature of the molding curved surface 21 of the optical lens which is formed from the molding die 10 having the upper mold 11 and the lower mold 12 formed on the surface 20 and determined by the formula (1) and specified.
- the reference spherical component which is the first term of equation (1), which is determined by quantitatively determining the test-formed optical lens
- the polynomial component which is the second term of equation (1)
- FIG. 12B shows correction values of the spherical component of the shape error on the concave side.
- FIG. 12 (b) shows that even when the surface shape of the lens changes, the spherical component correction value on the concave side is constant except for a part of the shape.
- FIG. 12A shows correction values of the shape error on the convex side of the spherical component.
- the correction value shown in FIG. 12A shows that the convex shape is constant when the refractive power is 4D or more. That is, the overall shape correction value indicates that the correction value of the shape error is constant on both the concave and convex surfaces when the refractive power is 4D or more.
- the aspherical component of the shape error shows different values for all refractive powers, and there is no tendency for the shape error and the correction value and the shape of the molded product.
- the spherical component and the aspherical component of the shape error are integrally corrected. Therefore, the correction value is changed for all the shapes.
- the correction of the shape error spherical component of the lens shape having a refractive power of 4D or more, which does not need to be changed, is also changed, so that the correction value determination is further complicated. As a result, trial production is sufficiently repeated for all molds, and an appropriate correction value is determined.
- This embodiment is By separately obtaining the correction information by separating the spherical component and the aspherical component of the shape error, it is possible to perform appropriate correction and easily design a molding die.
- the difference ⁇ ⁇ ⁇ ⁇ in the ⁇ direction between the radius of curvature R and the design vertex radius of curvature R on the design surface 20 of the optical lens is defined as
- This overall shape correction information is correction information necessary for the molded optical lens to obtain a desired refractive power.
- the design vertex radius of curvature R on the design surface 20 of the optical lens may not coincide with the contraction rate of the material.
- the shrinkage ratio differs for each material.
- the molded product can be obtained by using the overall shape correction information and the local shape correction information described later. ) Can be formed into a desired shape.
- the spherical shape of the shaped curved surface 21 (FIG. 5) of the optical lens represented by the polynomial component, which is the second term of Equation (1), which is obtained by quantifying the shaped optical lens, is shown.
- the shape change rate is calculated using the height (Z value) ZN of the component other than the above and the height (Z value) ZM of the designed curved surface 20 of the optical lens.
- the local shape correction information is determined by calculating, at each position from the vertex of the optical lens, a value obtained by multiplying the shape change rate at the position by the height ZM of the design curved surface 20 of the optical lens at the position.
- the design value of each position from the lens apex on the use surface 16 of the upper mold 11 and the lower mold 12 formed on the design curved surface 20 of the optical lens corresponds to the position.
- the whole shape correction information (difference H) is added in the Z direction to the design value of the entire use surface 16 of the upper mold 11 and the lower mold 12 to which the local shape correction information has been added.
- the error of the spherical component on the curved surface 21 of the optical lens to be molded is eliminated.
- the design values of the use surface 16 of the upper mold 11 and the lower mold 12 are corrected, and the use surface 16 is designed.
- the addition of the overall shape correction information may be performed only on the design value of the working surface 16 of the lower mold 12.
- the reason is that the lower mold 12 is common to various optical lenses, and the number of surfaces 16 to be corrected is smaller than that of the upper mold 11! /.
- the reason is that the optical lens formed by the use surface 16 of the lower mold 12 This is because, by changing the radius of curvature of the curved surface (concave surface), the influence on the curved surface (convex surface) of the optical lens is considered to be uniform.
- the design value of the curved surface of the optical lens is expanded and the design value of the use surface 16 is increased. It is calculated (S31). Based on the calculated design values, the upper mold 11 and the lower mold 11 are adjusted so that the surface 16 to be used is equal to the design curved surface (design vertex radius of curvature R) of the optical lens.
- the mold 12 is manufactured, and the mold 10 is assembled (S32).
- the optical lens is test-molded by injecting the monomer into the assembled mold 10, and the curved shape of the optical lens as the molded product is shaped based on the transfer marking 32 (FIG. 9) described later. It measures using a measuring device (S33).
- a measuring device for example, a force non-contact type three-dimensional measuring device (for example, UA3P manufactured by Matsushita Electric Co., Ltd.) or the like mainly using Taylor Surf manufactured by Taylor Hobson can be used in this embodiment. Yes, and there is no particular limitation on the measuring device.
- a ruby or diamond is placed at the tip of the probe, the tip moves while contacting the surface of the lens, and scans the lens surface to measure the surface shape. It is only.
- the three-dimensional measuring device scans the surface by floating a minute amount from the measurement surface by the intermolecular force.
- the data of the optical lens quantified by the equation (1) is analyzed (S34).
- local shape correction information is calculated from (step S36).
- the calculated local shape correction information and overall shape correction information are applied to the upper mold 11 and the lower mold 12 formed on the design curved surface (design vertex radius of curvature R) of the optical lens.
- the design value is added to the design value of each use surface 16 to correct the use surface 16 (S37).
- the design of the non-use surface 17 of the upper mold 11 and the lower mold 12 is executed (S38). Then, data for the processing machine is created from the design values of the used surface 16 and the non-used surface 17 in the upper mold 11 and the lower mold 12 (S39). Thereafter, the glass blanks are selected, and the upper mold 11 and the lower mold 12 of the molding die 10 are manufactured by a grinding machine and a polishing machine (S40).
- the optical lens formed by the mold 10 having the upper mold 11 and the lower mold 12 manufactured as described above has a desired spherical surface.
- FIG. 10A shows a shape error measurement result when the curved surface of the molded article according to the present embodiment is measured in different diameter directions (two orthogonal directions in the figure).
- FIG. 10 (B) shows a shape error measurement result when the curved surface of the molded product according to the first conventional technique is measured in different diameter directions (two orthogonal directions in the figure).
- 10 (A) and 10 (B) show the measurement results of a molded product obtained by molding an optical lens having a surface refractive power of 5. OOD (diopter) with the molding die 10.
- OOD diopter
- the horizontal axis indicates the distance (mm) from the lens center (apex), and 0 at the center of the graph indicates the center of the optical lens.
- the vertical axis indicates the refractive power error amount, and OOD indicates no error.
- the shape error amount of the molded article formed by the present embodiment and the first conventional technique will be described in detail.
- the lens center will be described.
- the central part of the lens is frequently used and is particularly important as the optical center.
- the error amount at the center of the optical lens is clearly different, and the error amount is 0.06D in the present embodiment (FIG. 10 (A)), whereas the error amount is 0.06D in the first prior art (FIG. 10 (B)). This is the error amount of 0.18D. Therefore, it is understood that the accuracy of the present embodiment is three times higher than that of the above-described conventional technology.
- peripheral portions other than the lens center portion will be described.
- the shape error with respect to the design curved surface of the optical lens is smaller in the molded product according to the present embodiment at any position of each part of the lens. Comparing the shape error around the outer diameter of 50 mm of the spectacle lens used in the general spectacle frame, the error amount is about 0.02D in the present embodiment, but is 0.04D in the first prior art. . Therefore, it is clear that the accuracy of the present embodiment is about twice as high as that of the conventional technology.
- the amount of error in the present embodiment is smaller and more gradual from the center to the peripheral portion of the lens than in the first related art. Therefore, even if the gaze position moves from the central part to the peripheral part due to the rotation of the eyeball, there is also an effect that there is little discomfort.
- the optical lens molded by the molding die 10 according to the design method of the present embodiment has a shape substantially equal to the designed curved surface.
- the optical lens formed by the mold according to the first conventional technique has a shape far from the designed curved surface.
- the vertical axis in FIGS. 10A and 10B indicates a refractive power error (unit: D (diopter)).
- This refractive power error is obtained by calculating the error of the radius of curvature r (unit: m) indicating the curved surface shape of the optical lens by the following equation (3) using the surface refractive power P (unit: D (diop ))).
- n is the refractive index of the optical lens.
- the sum of the respective surface refractive powers of the convex surface and the concave surface represents the refractive power of the optical lens.
- the transfer mark 32 (FIG. 9A) used as a reference when measuring the curved surface shape of the optical lens formed by the test will be described.
- the transfer mark 32 is formed by transferring the mark (not shown) formed on the use surface 16 of the upper mold 11 and the lower mold 12 of the mold 1S to the curved surface 31 of the optical lens 30 formed by the test molding. It is.
- the transfer mark 32 is formed by a vertex transfer mark portion 33 formed at the vertex O on the curved surface 31 of the optical lens 30 and the curved surface 31 perimeter And a pair of peripheral transfer mark portions 34A and 34B formed at a point symmetrical position with respect to the vertex O. Further, the vertex transfer mark portion 33 radiates at a predetermined distance from the main vertex transfer mark portion 35 formed at the vertex O of the curved surface 31 and is formed orthogonal to each other. And a sub vertex transfer mark portion 36.
- the main vertex transfer mark portion 35 is a circular convex portion having a diameter of about 0.5 mm.
- the peripheral transfer mark portions 34A and 34B are circular convex portions having a diameter of about 1 mm.
- the length S of the sub vertex transfer mark portions 36 is about 2 mm, the distance T between the sub vertex transfer mark portions 36 in the same straight line is about lmm, and the width dimension of these sub vertex transfer mark portions 36 is It is a rectangular projection of several tens of meters.
- the surface 16 to be used of the upper mold 11 and the lower mold 12 corresponds to the positions corresponding to the main vertex transfer mark portion 35, the sub vertex transfer mark portion 36, and the peripheral portion transfer mark portions 34A and 34B.
- a recess-shaped marking (not shown) having the following dimensions is formed.
- the vertex transfer marks 33 (the main vertex transfer mark portions 35 and the sub vertex transfer mark portions 36) and the peripheral portion transfer mark portions 34A and 34B are formed by being transferred onto the curved surface 31 of the optical lens 30.
- the markings for transferring the peripheral transfer mark portions 34A and 34B have a diameter of about lmm and are cut to a depth of several zm.
- the marking for transferring the main vertex transfer mark portion 35 has a diameter of about 0.5 mm and is cut to a depth of about 0.5 m or less. Further, the marking for transferring the sub vertex transfer mark portion 36 has a width of several tens of meters and is formed by marking to a depth of several tens of meters or less.
- the vertex transfer mark portion 33 (particularly the main vertex transfer mark portion 35) and the peripheral portion transfer mark portions 34A and 34B formed by being transferred to the curved surface 31 of the optical lens 30 pass through the vertex O of the curved surface 31. They are on the same straight line L1.
- the shape measuring instrument for measuring the shape of the curved surface 31 of the optical lens 30 passes through the peripheral transfer mark portion 34A, the vertex transfer mark portion 33, and the peripheral transfer mark portion 34B along the straight line L1 in order, and the curved surface 31 is used. By measuring the shape of the curved surface 31, the shape of the curved surface 31 can be accurately measured. Therefore, the vertex transfer mark portion 33 (particularly, the main vertex transfer mark portion 35) and the peripheral portion transfer mark portions 34A and 34B are located at positions where the curved surface 31 of the optical lens 30 is to be measured.
- the shape measuring instrument moves along the straight line L1 along the peripheral edge transfer mark portion 34A, the vertex transfer mark portion 33, and the like.
- the curved surface 31 of the optical lens 30 is measured by sequentially passing through the peripheral transfer mark portion 34B and the peripheral transfer mark portion 34B, since the vertex transfer mark portion 33 and the peripheral portion transfer mark portions 34A and 34B have extreme shape changes, Measured as loud noise. Therefore, when the noise of the vertex transfer mark portion 33 and the peripheral portion transfer mark portions 34A and 34B is not measured, the shape measurement on the curved surface 31 of the optical lens 30 by the shape measuring device must be accurately performed. Be clear. In this case, the setting of the optical lens 30 with respect to the shape measuring device is adjusted, and the shape measuring device sequentially passes through the peripheral portion transfer mark portion 34A, the vertex transfer mark portion 33, and the peripheral portion transfer mark portion 34B for measurement. To deal with.
- the measured value is approximated to the aspherical expression (1) or (2) using the least squares method as described above, so that there is no influence of noise on the measured value.
- the measurement error of the vertex transfer mark portion 33 and the peripheral portion transfer mark portions 34A and 34B is due to the fact that the peripheral portion transfer mark portions 34A and 34B are circular with a diameter of about lmm, And 34B are within about 0.5 mm.
- the main vertex transfer mark portion 35 of the vertex transfer mark portion 33 has a circular shape with a diameter of about 0.5 mm, the main vertex transfer mark portion 35 is within about 0.25 mm.
- the pair of the peripheral edge transfer mark portions 34A and 34B is not limited to being provided symmetrically with respect to the vertex O on the curved surface 31 of the optical lens 30, but may be provided in plural pairs.
- the other transfer marks 34A and 34B on the straight line L2 are rotated by a predetermined angle (for example, 90 degrees) with respect to the straight line L1 including the transfer marks 34A and 34B.
- a pair may be formed by transfer together with the transfer mark portions 34A and 34B.
- the shape measuring instrument measures the curved surface 31 of the optical lens 30 in different diameter directions along the straight lines L1 and L2, thereby accurately measuring the curved surface 31 of the optical lens 30 such as a toric lens in both orthogonal axial directions. It becomes possible to measure.
- the transfer mark 32 may be provided on the curved surface 31 of the optical lens 30 in an arbitrary direction, and the curved shape of the curved surface 31 may be measured by a shape measuring instrument in this direction.
- the curved surface of the lens is specified as an aspheric surface. Therefore, of the curved surface shape of the molded optical lens, not only the spherical component but also the non-spherical component can be quantified and specified by approximating the aspherical expression (1). Therefore, the error between the curved surface of the optical lens specified as an aspheric surface and the designed curved surface of the optical lens accurately captures the spherical shape component and the component other than the spherical shape. As a result, the correction information corresponding to the above error is also accurate, and the use surface 16 of the upper mold 11 and the lower mold 12 in the molding die 10 is accurately corrected, and the upper mold 11 and the lower mold 11 are corrected.
- the mold 12 can be designed.
- the measured value of the curved surface shape of the molded optical lens is approximated to the aspherical expression (1), and the curved surface shape of the optical lens is quantified and specified as an aspherical surface. Therefore, noises such as measurement errors and surface roughness of the curved surface of the optical lens included in the measured values can be eliminated, and only the measured values of the curved surface of the optical lens can be extracted. For this reason, the upper mold 11 and the lower mold 12 can be designed by accurately correcting the use surface 16 of the upper mold 11 and the lower mold 12 in the molding die 10.
- the overall shape correction information for correcting the overall shape of the used surface 16 of the upper mold 11 and the lower mold 12 in the molding die 10 is obtained.
- the upper mold 11 and the lower mold 12 are used. Find local shape correction information for correcting the local shape of the surface 16 to be used.
- the overall shape correction information and the local shape correction information are obtained separately and independently, so that the error of the optical lens (the error of the spherical shape component and the error of the component other than the spherical shape) can be accurately corrected.
- the upper mold 11 and the lower mold 12 can be designed by reflecting and making appropriate corrections.
- the correction information corresponding to (difference) can be easily calculated, and the upper mold 11 and the lower mold 12 of the molding die 10 for molding the optical lens having the desired shape can be easily designed.
- a mark (not shown) provided on the use surface 16 of the upper mold 11 and the lower mold 12 of the molding die 10 is transferred to the curved surface 31 of the optical lens 30 shown in FIG.
- Transfer marks 32 (vertex transfer mark portions 33, peripheral transfer mark portions 34A and 34B) are formed.
- the transfer mark 32 is located at a position to be measured on the curved surface 31 of the optical lens 30.
- the shape of the curved surface 31 of the optical lens 30 is measured with reference to the transfer marking 32 located at the position to be measured. Thereby, the measurement of the curved surface shape of the optical lens 30 can be accurately performed.
- the measured value is approximated to equation (1) or equation (2) for the aspherical surface
- the curved surface of the optical lens is specified as an aspherical surface
- correction information is calculated
- the upper mold model in the mold 10 is calculated.
- the use surface 16 of the mold 11 and the lower mold 12 can be accurately designed.
- FIG. 11 is a graph showing a shape change rate curve which is a part of the local shape correction information in a database used in the second embodiment of the molding die designing method according to the present invention.
- FIG. 12 is a graph showing database-based overall shape correction information used in the second embodiment of the molding die design method according to the present invention.
- the same parts as those in the first embodiment are denoted by the same reference numerals and names, and description thereof is omitted.
- the second embodiment differs from the first embodiment in the following points.
- steps S31 to S40 are performed in advance for all types of molds. At this time, each correction information is stored in a database. After creating the database, steps S35 to S40 are performed without performing steps S31 to S34.
- the first embodiment relates to a lens material and a design curved surface shape of an optical lens.
- the correction information is used to directly design the upper mold 11 and the lower mold 12 of the molding die 10.
- the correction information obtained at that time is compiled into a database for each characteristic of the optical lens. After the database is created, it is not necessary to perform test molding again, or only by simple test molding, using the correction information stored in the database, the upper mold 10 for mass-producing each optical lens. It is designed by correcting the design values of the working surface 16 of the lower mold 12 and the lower mold 12.
- an upper mold of a large number of molding dies 10 for molding each of a plurality of types of optical lenses having different design curved surfaces The surface 16 to be used in the mold 11 and the lower mold 12 is designed.
- An optical lens is test-molded by using a number of the designed molds 10, and a curved surface shape is measured for each of the molded optical lenses. Then, similarly to the above embodiment, the measured value is approximated to the equation (2) to quantify the curved surface shape of each optical lens.
- the vertex curvature C and the aspherical coefficient A the aspherical coefficient A
- Fig. 11 when a plurality of optical lenses having different design curved surfaces are molded, the shape change rate curves of the molded optical lenses are shown at each position of the lens apex force of the optical lens. .
- the lens material of the optical lens has a refractive index of 1.699.
- the horizontal axis indicates the distance (mm) from the lens center, and 0 at the center of the graph indicates the optical lens center.
- the vertical axis in FIG. 11 indicates the shape change rate, and 0% indicates no shape change. Indicates that no correction is required.
- the shape change rate curve of the molded optical lens is calculated for each lens material having a different refractive index and for each shape of the designed curved surface of the optical lens, and is converted into a database.
- Symbols a, b, c, d, and e in FIG. 11 indicate that the shape (curvature radius) of the design surface of the optical lens is + 2.00D equivalent shape, 0.000D equivalent shape, -2.00D equivalent shape, -6, respectively.
- a shape change rate curve in the case of a .00D-equivalent shape and a 10.00D-equivalent shape is shown.
- Fig. 12 shows the surface refractive power (D) in which the horizontal axis represents the lens shape.
- Numerical value 1 on the horizontal axis shows a lens shape with a large radius of curvature and a small curve value
- numerical value 6 on the horizontal axis shows It shows a lens shape with a small radius of curvature and a large force value.
- the vertical axis is the overall shape correction value
- OD indicates that correction that does not change the shape is not required.
- Fig. 12 shows the relationship between the overall shape correction information of the formed optical lens and the shape of the designed curved surface of the optical lens when a plurality of optical lenses with different designed curved surface shapes are formed. ⁇ and the concave side are indicated by a curve j8.
- the optical lens is a meniscus eyeglass lens having a refractive index of 1.699 and a convex surface and a concave surface.
- the overall shape correction information of the molded optical lens is calculated for each lens material having a different refractive index and for each shape of the designed curved surface of the optical lens, and is stored in a database.
- Figs. 11 and 12 the shape (curvature radius) of the designed curved surface of the optical lens is expressed by converting the surface refractive power (unit: D (diopter)) using the above-mentioned equation (3). Being done.
- the shape change curve d in FIG. 11 is selected. Then, by multiplying the corresponding lens design surface height by (Z value), the local correction information is Confirm at all positions of the lens. Similarly, if the curved surface shape is equivalent to 10.00D, the shape change rate curve e in FIG. 11 is selected.
- FIG. 11 shows that the shape change rate curve dynamically changes when the curved surface shape changes even with the same lens material. Furthermore, the surface shape value is 1.
- the OOD curve c in FIG. 11
- the OOD curve d in FIG. 11
- OOD curve d in FIG. 11
- the curved surface shape value 10.OOD curve e in FIG. 11
- OOD curve c in FIG. 11
- the whole lens material having the same lens material (having the same refractive index) and the same design curved shape as the optical lens to be mass-produced extract the shape correction information.
- FIG. 12 shows that, even if the lens material is the same, if the curved surface shape changes, the overall shape correction value also changes irregularly.
- the overall shape correction value is proportional to the surface power from 0 to 3D.
- the surface refractive power is larger than 4D, the overall shape correction value becomes constant at -0.05D.
- the whole shape correction value is constant except for a part of the surface refractive power. Therefore, it can be understood that shape change of a complicated shape such as a lens cannot be predicted at present, and it is difficult to perform appropriate correction with the conventional technology.
- the use surface 16 of the upper mold 11 and the lower mold 12 of the molding die 10 is designed to have a design curved surface of an optical lens to be mass-produced.
- the design values of the working surface 16 described above are added to the local shape correction information calculated based on the shape change rate curve extracted from the database as described above, and the overall shape extracted from the database.
- the correction information and the correction information are added in the Z direction.
- the design values of the working surface 16 of the upper mold 11 and the lower mold 12 for molding the optical lens to be mass-produced are corrected and calculated, and the upper mold of the molding die 10 is calculated.
- the second embodiment has the same effects as the effects (1) to (5) of the first embodiment, and also has the following effect (6). ).
- correction information for forming a molded product (optical lens) having a spherical curved surface, which is made into a database in the second embodiment, is used. Designing the surface to be used as the molding surface in the upper mold and the lower mold of the mold that molds a molded product (optical lens) with a curved aspheric surface using the shape change rate (part of the It is designed to correct the value.
- the whole shape correction information for molding an optical lens having a spherical curved surface and the shape change rate as a part of the local shape correction information are stored in a database for each characteristic of the optical lens having a spherical design curved surface.
- the method for implementing the method is the same as in the second embodiment, and a description thereof will be omitted.
- the characteristics of the optical lens are a lens material of the optical lens having a spherical curved surface and a design curved surface having a spherical shape.
- the design of the surface to be used in the upper mold and the lower mold of a molding die for molding an optical lens having an aspherical curved surface is based on a database based on an optical lens having an aspherical shape.
- the overall shape correction information and the shape change that is a part of the local shape correction information Start by taking the conversion rate.
- the curved surface to be molded is the same lens material as the aspherical optical lens, and the apex radius of curvature or the radius of curvature coincides with the average radius of curvature of the aspherical design curved surface of the optical lens.
- the apex radius of curvature is, for example, the radius of curvature at the apex of the aspherical design surface of the optical lens to be molded.
- the above-mentioned average radius of curvature refers to the average radius of curvature of the entire aspherical design surface of the optical lens to be molded.
- the radius of curvature at the top of the design curved surface of an optical lens whose aspheric surface is to be molded is +2. OOD (diopter).
- the corresponding database is referred to. For example, from the whole shape correction information shown in FIG. 12, on the convex side as the whole shape correction information, the corresponding whole shape correction value 0 on the curve ⁇ in the 2D of “refracting power representing the convex side lens shape” on the horizontal axis. Remove 100D.
- the value at an arbitrary position from the lens vertex in the extracted shape change rate is multiplied by the height (Z value) of the design curved surface of the aspherical shape of the optical lens at the corresponding position.
- the local shape correction information at the position is calculated.
- the local shape correction information is calculated at all positions of the optical lens whose curved surface is aspheric.
- Database force Adds the local shape correction information calculated based on the extracted shape change rate and the entire shape correction information from which the database force is also extracted in the z direction.
- the local shape correction information calculated at each position of the optical lens having the aspherical curved surface is converted into the upper mold and the lower mold designed on the aspherical design curved surface. Add in the Z direction to the design value of each position on the mold use surface.
- the whole shape correction information the whole shape correction information from which the database force is also taken out is used, for example, for the top of the upper mold and the lower mold used on the design surface of the aspherical shape. Add to the design value in the Z direction.
- the upper mold of the mold for molding an optical lens having an aspherical curved surface and the design value of the used surface in the lower mold are corrected and calculated, and the upper mold of the mold is calculated. Design the mold and lower mold.
- the third embodiment also has the following effect (7) in addition to the effects (1) to (5) of the first embodiment.
- an optical lens is manufactured by molding using a casting method.
- the present invention can be applied to a case where an optical lens is manufactured by a manufacturing method other than the casting method.
- it is applied to correction of cutting surface shape data in grinding, correction of shape of polishing tool (polishing plate) in polishing and correction of refractive power. it can.
- the present invention is applicable to correction of a thermo-soft mold.
- the molding die is glass
- the present invention can be applied to the case of molding with another molding die having a high heat shrinkage, for example, a mold.
- a force toric surface, an atomic surface, or the like described in the case of a rotationally symmetric optical lens having a spherical surface or an optical lens having an aspheric surface as a final molded product can be used as a final molded product.
- the main meridian has two main meridians perpendicular to the toric surface, and each main meridian has a spherical shape.
- An atomic surface is one whose main meridian is formed in an aspherical shape.
- the curved surface shape of the optical lens as a molded product is measured on one meridian (that is, diameter) passing through the center of the optical lens, and data analysis is performed.
- the data may be measured on multiple meridians (that is, diameters) passing through the center of the optical lens, the data may be interpreted, and an average value of these may be calculated.
- FIG. 1 is a side sectional view showing a mold having an upper mold and a lower mold manufactured by carrying out a first embodiment of a method of designing a mold according to the present invention.
- FIG. 2 is a side sectional view showing the lower mold of FIG. 1.
- FIG. 3 is a flowchart showing a procedure for manufacturing an optical lens (plastic lens) using the mold of FIG. 1.
- FIG. 4 is a flowchart showing a manufacturing procedure of an upper mold and a lower mold of FIG. 1.
- FIG. 5 is a graph showing a molding curved surface 21 and a design curved surface 20 of an optical lens which is a molded product subjected to test molding in FIG.
- FIG. 6 The deviation of the deviation of the polynomial component of the molded surface 21 of the optical lens specified by the equation (1) from the reference spherical surface component (curved surface shape 22) in FIG.
- FIG. 3 is a graph showing each position of the lens with a dash.
- FIG. 7 is a schematic diagram showing calculation of overall shape correction information and local shape correction information in the design procedure of the upper mold and the lower mold of FIG. 1.
- FIG. 8 is a flowchart specifically showing a design procedure of an upper mold and a lower mold of FIG. 1.
- FIG. 9 (A) is a front view showing the transfer marking formed on the curved surface of the optical lens by being transferred by the mold of FIG. 1, and (B) is a vertex transfer marking of FIG. 9 (A).
- 9 (C) is a partially enlarged view showing the peripheral edge transfer marking of FIG. 9 (A).
- FIG. 10 shows, at each position of the optical lens, a shape error that a molding curved surface of an optical lens as a molded product has with respect to a design curved surface, and (A) is designed by the molding die design method in the first embodiment.
- FIG. 8B is a graph of an optical lens molded using a molding die, wherein (B) shows an optical lens molded by a molding die designed by correcting using the average curvature in the first conventional technique. It is a graph in case of a lens.
- FIG. 11 is a graph showing a shape change rate which is a part of local shape correction information stored in a database used in a second embodiment of the molding die designing method according to the present invention.
- FIG. 12 is a graph showing database-based overall shape correction information used in a second embodiment of the molding die designing method according to the present invention.
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- Ophthalmology & Optometry (AREA)
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- General Physics & Mathematics (AREA)
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- Injection Moulding Of Plastics Or The Like (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP05745621A EP1752271B1 (en) | 2004-06-03 | 2005-05-31 | Mold designing method |
JP2006514101A JP4656531B2 (ja) | 2004-06-03 | 2005-05-31 | 成形型の設計方法 |
US10/555,385 US7251538B2 (en) | 2004-06-03 | 2005-05-31 | Method for designing mold, mold, and molded product |
AT05745621T ATE553901T1 (de) | 2004-06-03 | 2005-05-31 | Formwerkzeugdesignverfahren |
US11/819,091 US7546175B2 (en) | 2004-06-03 | 2007-06-25 | Method for designing mold, mold and molded product |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004166118 | 2004-06-03 | ||
JP2004-166061 | 2004-06-03 | ||
JP2004-166118 | 2004-06-03 | ||
JP2004166061 | 2004-06-03 |
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US10/555,385 A-371-Of-International US7251538B2 (en) | 2004-06-03 | 2005-05-31 | Method for designing mold, mold, and molded product |
US11/819,091 Division US7546175B2 (en) | 2004-06-03 | 2007-06-25 | Method for designing mold, mold and molded product |
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WO2005118246A1 true WO2005118246A1 (ja) | 2005-12-15 |
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PCT/JP2005/009982 WO2005118246A1 (ja) | 2004-06-03 | 2005-05-31 | 成形型の設計方法、成形型及び成形品 |
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US (2) | US7251538B2 (ja) |
EP (1) | EP1752271B1 (ja) |
JP (1) | JP4656531B2 (ja) |
KR (1) | KR20070029662A (ja) |
CN (1) | CN101722598B (ja) |
AT (1) | ATE553901T1 (ja) |
WO (1) | WO2005118246A1 (ja) |
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EP1944145A3 (en) * | 2007-01-09 | 2011-11-30 | Schott AG | Moulding tool for moulding a ceramic green body and use of said moulding tool |
JP2013003156A (ja) * | 2011-06-10 | 2013-01-07 | Hoya Corp | レンズ製造方法、及び眼鏡レンズ製造システム |
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CN1980779B (zh) * | 2004-05-31 | 2012-02-15 | Hoya株式会社 | 成形模的设计方法、成形模及成形品 |
TWM364865U (en) * | 2009-05-07 | 2009-09-11 | E Pin Optical Industry Co Ltd | Miniature stacked glass lens module |
US20100284089A1 (en) * | 2009-05-07 | 2010-11-11 | San-Woei Shyu | Stacked optical glass lens array, stacked lens module and manufacturing method thereof |
TW201111144A (en) | 2009-09-30 | 2011-04-01 | E Pin Optical Industry Co Ltd | High sag optical lens and method for fast molding the same |
JP6096019B2 (ja) * | 2012-03-26 | 2017-03-15 | Hoya株式会社 | モールド用成形型、モールド及び眼鏡レンズの製造方法 |
DE102012023635A1 (de) * | 2012-12-03 | 2014-06-05 | Miro Gmbh | Augenimplantat und Verfahren zu seiner Herstellung |
US20140255940A1 (en) * | 2013-03-07 | 2014-09-11 | Hologic, Inc. | Multi-well plate and method of use |
KR101504153B1 (ko) * | 2013-11-29 | 2015-03-19 | 송화섭 | 조립 및 가공이 용이한 고글용 렌즈 블랭크 |
EP3115188A1 (de) * | 2015-07-09 | 2017-01-11 | Carl Zeiss Vision International GmbH | Brillenglasrohling mit auf einen beschichtungsvorgang angepasster geometrie |
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EP1944145A3 (en) * | 2007-01-09 | 2011-11-30 | Schott AG | Moulding tool for moulding a ceramic green body and use of said moulding tool |
US8180482B2 (en) | 2007-01-09 | 2012-05-15 | Schott Ag | Method for producing a rotationally symmetric lens from a ceramic green body and moulding tool for performing the method |
JP2013003156A (ja) * | 2011-06-10 | 2013-01-07 | Hoya Corp | レンズ製造方法、及び眼鏡レンズ製造システム |
Also Published As
Publication number | Publication date |
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CN101722598B (zh) | 2012-11-28 |
ATE553901T1 (de) | 2012-05-15 |
JPWO2005118246A1 (ja) | 2008-04-03 |
EP1752271A4 (en) | 2010-06-02 |
US7251538B2 (en) | 2007-07-31 |
CN101722598A (zh) | 2010-06-09 |
EP1752271A1 (en) | 2007-02-14 |
JP4656531B2 (ja) | 2011-03-23 |
US20080004736A1 (en) | 2008-01-03 |
US20070043463A1 (en) | 2007-02-22 |
US7546175B2 (en) | 2009-06-09 |
KR20070029662A (ko) | 2007-03-14 |
EP1752271B1 (en) | 2012-04-18 |
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