JP2007240553A - Method for manufacturing spectacle lens - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing spectacle lens which has small influence on environment. <P>SOLUTION: In the method for manufacturing the spectacle lens, a cover range A of a semifinished lens is segmented in a semifinished lens manufacturing stage according to power S and power C. In a stage of manufacturing a spectacle lens, a semifinished lens having the power S and power C of a spectacle lens based upon order reception data from a customer within the cover range A is selected and then processed. Consequently, the processing quantity of the semifinished lens decreases and production amounts of cutting waste and polishing waste decrease to reduce influence on environment. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a spectacle lens manufacturing method for manufacturing a wide variety of semi-finished lenses.

  Conventionally, as a manufacturing method for eyeglass lenses, a base curve designed in advance to achieve optimal optical performance for spherical power (S power) and astigmatic power (C power) ordered from multiple types of semi-finished lenses is used. There is known a manufacturing method in which a semi-finished lens is selected, and the semi-finished lens is polished to form a spectacle lens corresponding to an order (for example, Patent Document 1).

  In the eyeglass lens manufacturing method described in Patent Document 1, manufacturing data for a lens manufacturing line is created based on customer prescription data, and the lens shape for each customer prescription is determined based on the manufacturing data. design. Then, NC processing data for creating the set lens shape with a numerically controlled turning machine is calculated in a calculation process. Then, in the semi-finished lens selection step, a semi-finished lens that is a source of a lens that satisfies the customer's prescription is selected manually or by an automatic warehouse. Thereafter, based on the data for NC processing, the semi-finished lens is cut and polished to produce a spectacle lens corresponding to the customer's prescription.

  Further, the semi-finished lens in the manufacturing method as described above is generally subdivided in advance as shown in FIG. In FIG. 8, the vertical axis indicates the frequency, the horizontal axis indicates the C frequency in a negative expression, and the unit is diopter (hereinafter referred to as D). In the following, the units of S frequency, C frequency, and base curve are all diopters, and the description of units is omitted. Here, these semi-finished lenses have such a shape that the required maximum center thickness and required maximum edge thickness of the lens in the range of S power and C power that it covers can be taken including the machining allowance for cutting and polishing. ing. For example, taking the 7.0-based semi-finished lens in FIG. 8 as an example, the required maximum center thickness is S + 4.0 where the S frequency is maximum, the required maximum edge thickness is S + 3.75, and the C frequency is −. It is at 3.00. FIG. 9 illustrates a method for determining the shape of the semi-finished lens, and shows a front view of the semi-finished lens and a cross-sectional view passing through the geometric center thereof. As shown in this figure, the semi-finished lens has a required maximum center thickness corresponding to the maximum S frequency and a required maximum edge thickness corresponding to the minimum frequency (minimum S frequency & minimum C frequency) plus a processing allowance. The back curve is set as follows. In this specification, the power condition for determining the shape of the semi-finished lens is appropriately referred to as the set SC power of the semi-finished lens.

Japanese Patent Laid-Open No. 10-175149 (see pages 6 to 7, see FIG. 1)

  By the way, in the semi-finished lens selection step in the conventional method of manufacturing a spectacle lens as described in Patent Document 1, a semi-finished lens as shown in FIG. 8 is selected. However, if the spectacle lens that satisfies the prescription data from the customer is far from the set SC power of the semi-finished lens, the cutting amount and the polishing amount increase. For example, when a spectacle lens having an S power of +1.00 and a C power of −0.25 is molded, the 4.0 base semi-finished lens in FIG. 8 is cut and polished. The set SC power of the semi-finished lens is formed so that the maximum S power is +1.50, the minimum S power is -2.00, and the minimum C power is -3.00.・ The amount of polishing increases. In addition, there are large and small lens diameters, but the lens diameter is determined assuming the largest lens shape. Finishing lens is used. For this reason, there is a problem that the amount of cutting waste generated by cutting or polishing increases, and the influence on the environment increases.

  In view of the above problems, an object of the present invention is to provide a method for manufacturing a spectacle lens that has a small influence on the environment, and a semi-finished lens used in the manufacturing method.

  A method for manufacturing an eyeglass lens according to the present invention includes a semifinished lens having a specific base curve that covers a predetermined range of spherical power and astigmatic power, and a plurality of types having different spherical power and astigmatic power coverage ranges in advance. The semi-finished lens manufacturing process to be manufactured and the semi-finished lens manufactured in the semi-finished lens manufacturing process, the spherical power and astigmatic power of the spectacle lens ordered from the customer are within the cover range. The method includes a selection step of selecting a finish lens, and a molding step of cutting and polishing the semi-finished lens selected in the selection step to mold a spectacle lens.

  According to this invention, a semi-finished lens that covers a predetermined range of spherical power and astigmatism power is manufactured by the semi-finished lens manufacturing process, and the spherical power and astigmatism power corresponding to the customer's order in the selection process are included in the cover range. A semi-finished lens is selected, and the spectacle lens is formed by cutting and polishing the semi-finished lens. As a result, in the semi-finished lens manufacturing process, it is possible to manufacture a plurality of types of semi-finished lenses that are subdivided not only by the spherical power but also by the astigmatic power. In the selection process, both the spherical power and the astigmatic power are produced. A semi-finished lens can be selected. Therefore, the processing amount of the semi-finished lens in the molding process, that is, the cutting amount and the polishing amount can be reduced. Therefore, cutting scraps and polishing scraps generated in this processing can be reduced, and the influence on the environment is reduced. Moreover, the cost required for processing the amount of cutting waste can be reduced. Furthermore, since the number of parts that need to be processed is reduced, it is possible to contribute to the reduction of lens raw materials. Furthermore, since the amount of processing is reduced, the processing operation can be simplified and the operation time required for processing can be shortened. In addition to this, the power required for processing can be saved and energy saving can also be handled.

In the spectacle lens manufacturing method of the present invention, the semi-finished lens manufacturing process manufactures the semi-finished lens by reducing the cover range corresponding to the spherical power and astigmatism power of the spectacle lens type that has received a large number of orders from customers. It is preferable to do.
According to the present invention, the semi-finished lens cover range corresponding to the spherical power and astigmatism power of the spectacle lens types with a large number of orders from customers is set small, and the semi-finished lens is further subdivided. ing. For this reason, in the case of spectacle lens types with a large number of orders from customers, the amount of processing can be further reduced by selecting a semi-finished lens that covers the spherical power and astigmatism power of this spectacle lens type. It is possible to reduce cutting waste and polishing waste generated in the process.

In the eyeglass lens manufacturing method of the present invention, it is preferable that the semi-finished lens manufacturing process manufactures a semi-finished lens having a center thickness and a edge thickness corresponding to the cover range.
According to the present invention, since the semi-finished lens has a center thickness and an edge thickness covering a predetermined range of spherical power and astigmatic power, it is easy to cut and polish such a semi-finished lens. Glasses lenses can be molded.

In the spectacle lens manufacturing method of the present invention, it is preferable that the semi-finished lens manufacturing step manufactures a semi-finished lens having a lens diameter that covers a required diameter of the spectacle lens type ordered from a customer.
According to the present invention, since the semi-finished lens has a lens diameter that covers the required diameter of the spectacle lens ordered from the customer, the semi-finished lens can be easily ordered from the customer by cutting or polishing the semi-finished lens. Corresponding shapes of eyeglass lenses can be molded.

  Hereinafter, a spectacle lens manufacturing method and spectacle lens manufacturing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram schematically showing a manufacturing system including a spectacle lens manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is a front view of the semi-finished lens. FIG. 3 is a sectional view schematically showing a side section of the semifinished lens. FIG. 4 is a diagram showing a subdivided cover range of each semi-finished lens. FIG. 5 is a diagram showing statistics on the number of orders for eyeglass lenses.

  In FIG. 1, reference numeral 1 denotes a spectacle lens manufacturing system according to an embodiment of the present invention. The manufacturing system 1 includes a terminal device 2, a server device 3, and a processing and manufacturing machine 4. . Then, the manufacturing system 1 transmits the customer prescription data input from the terminal device 2 to the server device 3, and the server device 3 generates processing data for the eyeglass lens corresponding to the customer prescription data. Then, the processing data is transmitted from the server device 3 to the processing / manufacturing machine 4, and the processing / manufacturing machine 4 processes the semifinished lens based on the processing data, that is, cuts and polishes.

  The terminal device 2 is provided, for example, in a spectacle lens retail store or an ophthalmic clinic. Examples of the terminal device 2 include a personal computer. The terminal device 2 includes an external input / output unit 21, an input unit 22, a storage unit 23, a terminal control unit 24, and the like.

  The external input / output unit 21 is connected to the terminal control unit 24. The external input / output unit 21 is connected to the server device 3 via a network, and outputs predetermined information to the server device 3 based on a signal input from the terminal control unit 24. Also, the information transmitted from the server device 3 is recognized and input to the terminal control unit 24.

  The input unit 22 includes a control unit such as a mouse and a keyboard, and outputs input information input from the control unit to the terminal control unit. Examples of the input information include eyeglass lens order data based on a customer's prescription, and control information for controlling the operation of the terminal device 2.

  The storage unit 23 is connected to the terminal control unit 24 and stores various types of information input from the terminal control unit 24, that is, order data as described above. Further, based on a control signal from the terminal control unit 24, predetermined information and a program are output to the terminal control unit 24. The storage unit 23 may have a configuration including a drive and a driver that are readable and stored in a recording medium such as an HD (Hard Disc), a DVD (Digital Versatile Disc), an optical disc, or a memory card.

  Here, the order data stored in the storage unit 23 includes order date information regarding order date, spherical power (S power), astigmatism power (C power), astigmatism axis, addition power, prism, lens thickness, lens diameter, color. It is configured in a table concept with a plurality of records constructed by various information such as.

  When the terminal control unit 24 recognizes the input information from the input unit 22 and determines that the recognized information includes order data, the terminal control unit 24 inputs and stores the order data in the storage unit 23. Further, when it is determined that the input information from the input unit 22 includes command information for transmitting the order data to the server device 3, the order data recorded in the storage unit 23 is recognized and the external input / output unit 21 Control is performed to send the order data to the server device 3.

  The server device 3 includes an interface unit 31, an input unit 32, a storage unit 33, a calculation unit 34, and the like.

  The interface unit 31 recognizes information transmitted from the terminal device 2 via the network and outputs the information to the calculation unit 34. In addition, when information to be transmitted to the terminal device 2 is input from the calculation unit 34, the interface unit 31 performs output interface processing that is set in advance on the input information, via the network. Output to the terminal device 2.

  Similar to the terminal device 2, the input unit 32 includes a controller unit such as a keyboard and a mouse. And the input means 32 outputs various information to the calculating part 34 suitably by input operation of a control part.

  The storage means 33 stores the order data received from the terminal device 2, that is, stores it so that it can be read out.

  The calculation unit 34 recognizes the order data transmitted from the terminal device 2 input from the interface unit 31 and stores the order data in the storage unit 33. Further, processing data for processing the semi-finished lens is calculated based on the recognized order data. That is, the calculation unit 34 calculates a combination on a curved surface based on the customer's prescription based on the order data, designs a lens shape for each customer's prescription, and creates processing data. And the calculating part 34 controls the interface part 31, and performs control which transmits the process command information based on the calculated process data to the process manufacturing machine 4. FIG.

  The processing and manufacturing machine 4 includes a semi-finished lens manufacturing apparatus 41 and a spectacle lens manufacturing apparatus 42.

  The semi-finished lens manufacturing apparatus 41 manufactures a plurality of types of semi-finished lenses 5 to be processed into spectacle lenses. As shown in FIGS. 2 and 3, the semi-finished lens 5 is formed into a planar circular shape or a substantially elliptical shape having a lens diameter α, a center thickness β, and an edge thickness γ that are large enough to take a predetermined lens shape K. Lens. In FIG. 2, (A) is laid out so that a fitting point (FP), which is a point on the lens that should come in front of the eye when the frame is put, is at the geometric center (GC) of the lens. In this case, a lens diameter α is required in which the distance from the fitting point to the position on the target lens that is furthest away is the radius. (B) shows a case where the required lens diameter is reduced by shifting the fitting point from the geometric center (GC), and the size of the semi-finished lens is reduced by making it a substantially elliptical shape. Usually, the fitting point is biased upward from the center of the target lens shape to the nose side. In general, (B) requires less lens material, but a circular semi-finished lens as shown in (A) is often used because a circular shape is easier to process and is advantageous in terms of total economy. Often done. Regarding the geometric center and the fitting point, processing is somewhat complicated, but the fitting point may be decentered from the geometric center. In order to simplify the description below, the shape of the semi-finished lens is described as a circle, and the lens diameter is described as α. In the case of an elliptical shape, there are two dimension values, a major axis α1 and a minor axis α2, but the lens diameter α means both of them as an index indicating the size.

Here, the semi-finished lens manufacturing apparatus 41 manufactures a plurality of types of semi-finished lenses 5 having different center thickness β and edge thickness γ. Then, the back curve 5A of the semi-finished lens 5 is determined by the center thickness β and the edge thickness γ.
Further, as a type of the semi-finished lens 5, as shown in FIG. 4, the cover range A is subdivided according to the S frequency and C frequency of the eyeglass lens to be manufactured. At this time, the size of the cover range of the semi-finished lens 5 is set according to the number of orders received by customers. Here, the number of orders received by the customer is a numerical value calculated by statistically analyzing the order data transmitted from the terminal device. For example, the number of orders as shown in FIG. FIG. 5 is a diagram statistically showing the number of orders for the customer's eyeglass lenses. In FIG. 5, the range indicated by 6A is the range in which the number of orders received by the customer is the largest, and the number of orders received decreases with distance from this range 6A. Then, according to the number of orders as described above, for example, in the vicinity of the range 6A where the number of orders is large, the size of the cover range A is set small. That is, the semi-finished lens 5 is the same as the conventional one of FIG. 8 with respect to the base curve, but with respect to the base curves 4.0 and 2.5, +0.75 to +1.50, −0. Divided into 25 to +0.50, -1.25 to -0.50, -2.00 to -1.25, -3.00 to -2.25, -4.00 to -3.25, and It is divided into 0.00 to -0.50, -0.75 to -1.25, -1.50 to -3.00 according to the C frequency over all base curves.

  Further, the semi-finished lens manufacturing apparatus 41, with respect to each cover range A, with respect to the maximum S frequency, the maximum S frequency of each cover range, the minimum S frequency and the minimum C frequency, the lower right corner of each cover range ( The semi-finished lens 5 is manufactured with a set SC power (indicated by a double circle in the figure). For example, in FIG. 4, in the semi-finished lens 5 in the cover range A that is +2.75 to +3.50 with respect to the S frequency and 0.00 to −0.50 with respect to the C frequency, the maximum S frequency +3. The semi-finished lens 5 is manufactured by setting the center thickness β and the edge thickness γ so as to correspond to the spectacle lens having 00, minimum S power +2.75, and minimum C power −0.50. In such a semi-finished lens 5, when producing a spectacle lens having an S power of +2.75 and a C power of −0.50, the generation amount of cutting waste and polishing waste is reduced. Minimal.

  Then, the semi-finished lens manufacturing apparatus 41 manufactures the semi-finished lens 5 having a plurality of types of lens diameters α, for example, lens diameters α of 70 mm, 75 mm, 80 mm, etc., corresponding to the required diameter of the spectacle lens to be manufactured. Here, the number of semi-finished lenses 5 to be manufactured is set in accordance with the number of orders received by customers. For example, the statistical data based on the order data transmitted from the terminal device 2 indicates that the ratio between the number of orders for eyeglass lenses with a lens diameter α corresponding to 70 mm and the number of orders for eyeglass lenses with a lens diameter α corresponding to 80 mm is For example, when the ratio is 9: 1, the ratio of the number of manufactured semi-finished lenses 5 having a lens diameter α of 70 mm and the number of manufactured semi-finished lenses having a lens diameter α of 80 mm is 9: 1. 5 is manufactured.

  Further, the semi-finished lens 5 manufactured by the semi-finished lens manufacturing apparatus 41 is stocked in, for example, a warehouse.

  The spectacle lens manufacturing apparatus 42 is an apparatus that manufactures spectacle lenses by cutting and polishing the semi-finished lens 5.

  The eyeglass lens manufacturing apparatus 42 selects the stock semi-finished lens 5 based on the processing data transmitted from the server apparatus 3, attaches the selected semi-finished lens 5 to a cutting machine and a polishing machine, and performs cutting and cutting. Grind. Specifically, the spectacle lens manufacturing apparatus 42 recognizes the S power and C power of the target spectacle lens and the required diameter of the spectacle lens based on the processing data transmitted from the server device 3. Then, the spectacle lens manufacturing apparatus 42 selects the semi-finished lens 5 having a lens diameter corresponding to the required diameter based on the recognized required diameter of the spectacle lens. Further, the eyeglass lens manufacturing apparatus 42 selects the semi-finished lens 5 having these S frequency and C frequency within the cover range A based on the recognized S frequency and C frequency. The selection of these semi-finished lenses 5 may be automatically selected by an automatic warehouse or the like, or may be manually selected.

  Then, the spectacle lens manufacturing apparatus 42 cuts and polishes the surface of the selected semi-finished lens 5 based on the processing data to manufacture the spectacle lens.

[Glass Lens Manufacturing Method]
A method for manufacturing a spectacle lens in the spectacle lens manufacturing system 1 will be described with reference to the drawings. FIG. 6 is a flowchart showing a manufacturing process of the semi-finished lens. FIG. 7 is a flowchart showing the manufacturing process of the eyeglass lens.

First, the manufacturing method of the semifinished lens 5 used for manufacturing the spectacle lens will be described.
In manufacturing the semi-finished lens 5, first, order data is input based on the customer's prescription at the input unit 22 of the terminal device 2. When the terminal device 2 performs control to transmit, for example, order data to the server device 3, the terminal control unit 24 of the terminal device 2 transmits the order data to the server device 3.

  Then, when the server device 3 receives and recognizes the order data transmitted from the terminal device 2 (step S01), the server device 3 generates statistical data based on the order data (step S02). That is, the calculation unit 34 of the server device 3 refers to each record of the order data and recognizes the S frequency, the C frequency, and the required diameter of the spectacle lens from these records. For example, as shown in FIG. Generate statistical data that is a statistic of the data.

  And the calculating part 34 of the server apparatus 3 sets the cover range A of the semifinished lens 5 based on the statistical data produced | generated in step S02 (step S03). That is, in the statistical data, the cover range A corresponding to the vicinity of the S frequency and C frequency of the spectacle lens type having a large number of orders is set small, while the cover corresponding to the S frequency and C frequency of the spectacle lens type having a small order number is set. Set the range A large. Thereby, the cover range of the segmented semi-finished lens 5 as shown in FIG. 4 is set.

  Further, the calculation unit 34 of the server device 3 sets the number of manufactured semi-finished lenses 5 based on the statistical data. In other words, a large number of semi-finished lenses 5 having a lens diameter α corresponding to the required diameters of spectacle lens types with a large number of orders are set, and semi-finished lenses with a lens diameter α corresponding to the required diameters of spectacle lens types with a small number of orders. The number of lenses 5 manufactured is set to be small.

  Then, the calculation unit 34 of the server device 3 determines the center thickness β and the edge thickness γ of the semifinished lens 5 based on the cover range A as shown in FIG. 4 set as described above, and the calculation unit 34. Determines the number of semi-finished lenses 5 manufactured according to the difference in lens diameter α. Then, semi-finished lens manufacturing command information is generated based on these determination items, and the semi-finished lens manufacturing command information is transmitted to the processing and manufacturing machine 4.

  When receiving the semi-finished lens manufacturing command information from the server device 3, the processing and manufacturing machine 4 controls the semi-finished lens manufacturing device 41 based on the semi-finished lens manufacturing command information to manufacture the semi-finished lens 5 ( Step S04). The manufactured semi-finished lenses 5 are stocked in a warehouse or the like (step S05).

  Next, a method for manufacturing a spectacle lens using the semifinished lens 5 manufactured and stocked as described above will be described.

  In FIG. 7, for example, when order data based on a customer's prescription is input at the terminal device 2 installed in a retail store or the like, the terminal control unit 24 of the terminal device 2 recognizes the order data (steps). S11), the process stored in the storage unit 23 is performed. Thereafter, when the terminal control unit 24 of the terminal device 2 recognizes that input information indicating that order data is transmitted from the input unit 22 to the server device 3, for example, the terminal control unit 24 controls and stores the external input / output unit 21. The order data recorded in the unit 23 is controlled to be transmitted to the server device 3 (step S12).

  When the server device 3 receives the order data from the terminal device 2 (step S13), the server device 3 recognizes the order data and stores it in the storage means. Thereafter, the calculation unit 34 of the server device 3 generates processing data in which the S frequency, the C frequency, the required diameter of the spectacle lens, and the like of the spectacle lens to be manufactured are recorded based on the order data (step S14). . Note that the processing data may be directly generated without being stored in the storage unit. Thereafter, the calculation unit 34 of the server device 3 controls the interface unit 31 to control the generated processing data to be transmitted to the processing manufacturing machine 4 (step S15).

  And the processing manufacturing machine 4 will select the semifinished lens 5 based on this processing data, if the processing data is received from the server apparatus 3 (step S16: selection process). Specifically, the eyeglass lens manufacturing apparatus 42 of the processing / manufacturing machine 4 determines the S frequency and the C power and the cover range A based on the S power and the C power of the eyeglass lens to be manufactured recorded in the processing data. The semi-finished lens 5 included therein is selected from the semi-finished lenses 5 manufactured and stocked in the semi-finished lens manufacturing process. Further, the semi-finished lens 5 corresponding to the lens diameter α recorded in the processing data is selected from these semi-finished lenses 5.

  Thereafter, the eyeglass lens manufacturing apparatus 42 of the processing and manufacturing machine 4 attaches the semi-finished lens 5 selected in step S17 to, for example, a not-shown cutting apparatus or polishing apparatus, and cuts and polishes based on the processing data. (Step S18: Molding process).

[Effects of eyeglass lens manufacturing system]
In the eyeglass lens manufacturing system as described above, in the semi-finished lens manufacturing process, the cover range of the semi-finished lens 5 is subdivided according to the S frequency and the C frequency. In the eyeglass lens manufacturing process, the semi-finished lens 5 having the S-degree and C-degree of the eyeglass lens in the cover range A based on the order data from the customer is selected, and the semi-finished lens 5 is processed. . For this reason, the processing amount of the semi-finished lens 5 in step S18, that is, the cutting amount and the polishing amount is reduced, and the working time and the working amount required for the processing can be reduced. Moreover, it can respond also to the energy saving of the spectacles lens manufacturing apparatus 42, and can also implement | achieve the reduction of the raw material of a lens. Further, since the processing amount of the semi-finished lens 5 is reduced, the generation amount of cutting waste and polishing waste is also reduced, and the influence on the environment can be reduced.

  Further, the semi-finished lens 5 is further subdivided by reducing the cover range A corresponding to the S and C degrees of the spectacle lens types having a large order quantity based on the customer order data. For this reason, in the eyeglass lens types with a large number of orders, a more appropriate semi-finished lens 5 can be selected, and the processing amount of the semi-finished lens 5 can be further reduced. Therefore, the influence on the environment can be further reduced.

  Further, the semi-finished lens 5 is formed to have a center thickness β and an edge thickness γ corresponding to the S power and C power in the cover range A. That is, the semi-finished lens 5 is formed in the cover range A corresponding to the maximum S frequency, the minimum S frequency, and the minimum C frequency. Therefore, when processing the semi-finished lens 5, the eyeglass lens can be manufactured with a minimum processing amount.

  Then, the semi-finished lens manufacturing apparatus 41 manufactures a plurality of types of semi-finished lenses 5 having a lens diameter α corresponding to the number of orders based on statistical data of customer order data. That is, a large number of semi-finished lenses 5 having a lens diameter α corresponding to the required diameter of the spectacle lens having a large number of orders are manufactured, and the semi-finished lenses 5 corresponding to the lens diameter α corresponding to the necessary diameter of the spectacle lens having a small number of orders are manufactured. The number of manufactures is reduced. For this reason, since the number of required semi-finished lenses 5 is increased, the semi-finished lenses 5 can be efficiently manufactured and stocked, and the lens raw material required for manufacturing the semi-finished lenses 5 can be reduced.

[Modification of the embodiment]
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

  For example, in the eyeglass lens manufacturing method, after the cutting and polishing of the semifinished lens in step S18, an inspection process for inspecting the accuracy of the processed eyeglass lens, and a hard coat process for forming a hard coat layer on the lens surface Other processes may be provided separately.

  Moreover, although the example which processes the semi-finished lens 5 by selecting the semi-finished lens 5 based on the processing data in the processing and manufacturing machine 4 has been shown, the present invention is not limited to this. The lens 5 may be selected. In this case, for example, in the server device 3, inventory information regarding the type and number of the semifinished lenses 5 to be stocked is stored in the storage means 33, and the semifinished lenses corresponding to the processing data are based on the inventory information. Select. In such a configuration, the processing and manufacturing machine 4 receives the processing data together with information on the semi-finished lens 5 selected from the server device 3, and processes the semi-finished lens 5. Even with such a configuration, an appropriate semi-finished lens can be selected easily, the manufacturing process of the semi-finished lens can be shortened, and the influence on the environment due to cutting waste and polishing waste can also be reduced.

  Furthermore, in the above-described embodiment, the configuration in which the semi-finished lens 5 is selected by an automatic warehouse is shown, but it may be manually selected, for example.

  Further, FIG. 4 shows a manufacturing method in which the semi-finished lens 5 is divided into the cover range A by the difference in S frequency and further divided into the cover range A by the C frequency. What subdivided the range A may be used.

Although the best configuration for carrying out the present invention has been disclosed in the above description, the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations.
Therefore, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

  The present invention is a manufacturing form in which a small number of products are processed after receiving an order, for example, manufacturing of a lens for correcting vision such as eyeglass lenses and contact lenses, and a medical device or sports equipment that adjusts processing according to each person's body. Can be used for manufacturing.

FIG. 1 is a block diagram schematically showing a manufacturing system including a spectacle lens manufacturing apparatus according to an embodiment of the present invention. It is a front view of a semi-finished lens. It is sectional drawing which shows typically the side cross section of a semifinished lens. It is a figure which shows the subdivided coverage of each semi-finished lens. It is a figure which shows the statistics of the order number of a spectacles lens. It is a flowchart which shows the manufacturing process of a semifinished lens. It is a flowchart which shows the manufacturing process of an eyeglass lens. It is a figure which shows the cover range of each conventional semifinished lens. It is a figure which shows the determination method of the shape of a semifinished lens.

Explanation of symbols

  5 ... Semi-finished lens, 41 ... Semi-finished lens manufacturing device, 42 ... Glasses lens manufacturing device, A ... Cover range, α ... Lens diameter, β ... Center thickness, γ ... Edge thickness, K ... Bead shape, FP ... Fitting point GC ... Geometrical center.

Claims (4)

A semi-finished lens manufacturing process for manufacturing a semi-finished lens having a specific base curve that covers a predetermined range of spherical power and astigmatic power, in advance, a plurality of types with different spherical power and astigmatic power coverage ranges; and
A selection step of selecting the semi-finished lens in which the spherical power and the astigmatic power of the spectacle lens ordered from the customer are within the cover range from a plurality of types of semi-finished lenses manufactured in the semi-finished lens manufacturing process;
A molding step of molding the spectacle lens by cutting and polishing the semi-finished lens selected in the selection step;
The manufacturing method of the spectacle lens characterized by comprising. It is a manufacturing method of the eyeglass lens according to claim 1,
In the semi-finished lens manufacturing process, the semi-finished lens is manufactured by reducing the cover range corresponding to the spherical power and the astigmatic power of a spectacle lens type in which orders are received from customers. Method. It is a manufacturing method of the eyeglass lens according to claim 1 and claim 2,
The semi-finished lens manufacturing step manufactures a semi-finished lens having a center thickness and an edge thickness corresponding to the cover range. A method for manufacturing a spectacle lens according to any one of claims 1 to 3,
The semi-finished lens manufacturing process manufactures a semi-finished lens having a lens diameter that covers a required diameter of a spectacle lens type ordered from a customer.

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