JP2009020536A - Manufacturing method of progressive multifocal lens and progressive multifocal lens - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for providing design data for enabling a lens processing manufacturer to manufacture a desired internal progressive multifocal lens according to prescription data, and a system for providing the design data. <P>SOLUTION: In the design data providing system 1, a design data creating vender 5 provides the lens processing manufacturer 6 with the design data of the internal progressive multifocal lens if the lens processing manufacturer 6 accepts a contract that the design data of the internal progressive multifocal lens is supplied from the design data creating vender 5 on the condition that the lens processing manufacturer 6 pays for the design data. The design data providing system 1 is provided with a server device 2 as a host computer device, a terminal computer device 3, and a network 4 for connecting the server device 2 and the terminal computer device 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a design data providing method and a design data providing system.

In recent years, spectacles using an inner progressive multifocal lens, which is bifocal spectacles, have been used when the eye's accommodation ability has decreased due to presbyopia or the like. This inner surface progressive multifocal lens is a lens in which a single lens has a different power. For example, the upper part of the lens is a distance part for viewing the distance, and the lower part is a near part for viewing the vicinity. From the distance and the distance portion to the near portion, the refractive power gradually changes, and the curvature constituting the distance portion, the near portion, and the progressive portion is added to the inner surface located on the eyeball side. (For example, refer to Patent Document 1).
The inner surface of such an inner surface progressive multifocal lens is created by cutting and polishing the surface according to the individual prescription (power, astigmatism angle, etc.) of the user. Specifically, a semi-finished lens with a curved surface corresponding to the power formed on the convex side outside the lens is manufactured, and the concave side inside the semi-finished lens is matched to prescription data such as astigmatism angle and prism angle. Is cut and polished to finish the inner surface progressive multifocal lens.

WO 97/19382 pamphlet (pages 16 to 29, FIG. 1)

As a sales route for inner surface progressive multifocal lenses, in addition to a route where lens manufacturers manufacture inner surface progressive multifocal lenses and sell them to eyeglass stores, lens manufacturers purchase semi-finished lenses from lens manufacturers, There is a route in which this semi-finished lens is processed into an inner surface progressive multifocal lens, and a lens processor sells the inner surface progressive multifocal lens to an eyeglass dealer.
In the case of the latter route, the lens processing company creates and processes the design data for the inner surface progressive multifocal lens. However, the creation of the design data for the inner surface progressive multifocal lens is complicated. There has been a problem that a trader cannot process an inner surface progressive multifocal lens as desired.

An object of the present invention is to provide a design data providing method and a design data providing system by which a lens processor can manufacture a desired inner surface progressive multifocal lens according to prescription data.

The design data providing method of the present invention includes a distance portion and a near portion having different refractive powers, and a progressive portion in which the refractive power changes progressively between them, on the inner surface located on the eyeball side. The distance portion,
A terminal computer device connected to a processing machine purchased by a lens processor in order to provide design data of an inner surface progressive multifocal lens to which a curvature constituting a near portion and a progressive portion is added, and the terminal computer device The system is executed on a system including a host computer device connected via a communication line and managed by a design data creator, and the host computer device pays the design data creator from the lens processor. A contract compliance information acquisition procedure for acquiring information to the effect that a contract is received that receives supply of design data for an inner surface progressive multifocal lens used for the processing machine control, and the lens processor A prescription data acquisition procedure for acquiring prescription data for an inner surface progressive multifocal lens from a communication line via the communication line; A design data generating step of generating design data corresponding to the data, characterized in that it comprises the generated design data and design data distribution procedure for delivering to the terminal computer device.

Here, the design data provided by the design data creator may be an NC machining program for machining an internally progressive multifocal lens, and a progressive surface that is an eyeball side surface is represented by a number of point clouds. The displayed data may be used. In the latter case, the lens processor performs surface interpolation from the point group and further converts it into an NC processing program.
According to the present invention, since the design data created by the design data maker based on the prescription data is provided to the lens maker that processes the progressive progressive multifocal lens, the lens maker can select the desired data. An inner surface progressive multifocal lens can be processed.
In addition, a contract was signed between the lens processor and the design data creator to receive the design data for the inner progressive lens system, provided that the lens processor pays the design data creator. Therefore, the design data creator can surely obtain the price.

In the present invention, the design data generation procedure includes a predetermined reference design data based on the prescription data acquired from a plurality of reference design data corresponding to the addition degree of the progressive progressive multifocal lens stored in advance. Preferably, the method includes a step of selecting, and a step of processing the selected reference design data based on the prescription data. According to the present invention as described above, the host computer device on the design data creator side stores the reference design data according to the addition, and the reference design data is processed according to the prescription data. Compared to creating data from the beginning, the data creation time can be shortened. Therefore, design data can be quickly provided to the lens processor.

Further, in the present invention, an inspection data generation procedure for generating inspection data for inspecting optical characteristics of the processed spectacle lens from the generated design data, and the generated inspection data are stored in the terminal computer. An inspection data distribution procedure to be distributed to the apparatus; an inspection result acquisition procedure for acquiring an inspection result of the spectacle lens based on the inspection data; a correction procedure for correcting the design data based on the acquired inspection result; It is preferable to include a corrected design data distribution procedure for distributing the corrected design data to the terminal computer device.

According to the present invention as described above, since the inspection data is generated by the host computer device of the design data creator, the inspection data can be provided to the lens processor. Thereby, the inspection of the inner surface progressive multifocal lens manufactured by the lens processor can be easily performed.
Further, since the design data is corrected based on the inspection result, the design data can be made more accurate, and accurate design data can be provided. Thereby, the lens processor can manufacture an inner surface progressive multifocal lens more correctly.

At this time, a distribution number counting procedure for counting the number of times design data is distributed according to the design data distribution procedure, and a charging information generation procedure for generating charging information for the lens processing company based on the counted number of distributions are provided. It is preferable.
According to the present invention, the number of times design data is distributed is counted, and billing information for the lens processor is generated based on the counted number of distributions. Fees and license fees can be secured.

The present invention can be established not only as a design data providing method but also as a design data providing system.
That is, the design data providing system of the present invention includes a distance portion and a near portion having different refractive powers, and a progressive portion in which the refractive power gradually changes between them, and is located on the eyeball side. A design data providing system for providing design data of an inner surface progressive multifocal lens in which curvatures constituting the distance portion, the near portion, and the progressive portion are added to an inner surface, and a processing machine purchased by a lens processor And a host computer device connected to the terminal computer device via a communication line and managed by a design data creator, the host computer device receives the design data from the lens processing company. Complying with a contract to receive supply of design data for the progressive surface multifocal lens used for the processing machine control, subject to payment to the manufacturer A contract acceptance information acquisition unit for acquiring information to the effect, a prescription data acquisition unit for acquiring prescription data for an inner surface progressive multifocal lens from the lens processor via a communication line, and a prestored inner surface progressive multifocal lens A reference design data acquisition unit that selects predetermined reference design data based on the acquired prescription data from a plurality of reference design data according to the degree of addition, and the selected reference design data as the prescription data It is characterized by having an arrangement design unit for processing based on a distribution unit for distributing processed design data to the terminal computer device.
According to the present invention as described above, the same effect as the design data providing method can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a design data providing system 1 according to the present invention. This design data providing system 1 has accepted a contract to receive the design data of the inner progressive lens multifocal lens L (see FIG. 2) from the design data creator 5 on condition that the lens processor 6 pays the price. In this case, the design data creator 5 provides the lens processor 6 with design data of the inner surface progressive multifocal lens L.
Here, as shown in FIG. 2, the inner surface progressive multifocal lens L includes a distance portion L1 and a near portion L2 having different refractive powers, and a progressive portion in which refractive power changes progressively between them. L3,
This is a lens in which curvatures constituting the distance portion L1, the near portion L2, and the progressive portion L3 are added to the inner surface L4 located on the eyeball side. The outer surface L5 is a spherical surface.
Such an inner surface progressive multifocal lens L is a semi-finished lens according to prescription data (
This is obtained by selecting an incomplete lens having a substantially circular shape that is thicker than the inner surface progressive multifocal lens L, which is a finished product, and creating a shape of this semi-finished lens based on design data.

The design data providing system 1 includes a server device 2 as a host computer device, a terminal computer device 3, and a network 4 as a communication line connecting the server device 2 and the terminal computer device 3.
Here, the network 4 connects the server device 2 and the terminal computer device 3 so that various data can be transmitted and received. As this network 4, TCP / IP (Transmissi
Any configuration that transmits and receives data, such as the Internet based on a general-purpose protocol such as on Control Protocol / Internet Protocol, or an intranet such as a LAN (Local Area Network), can be used.

The terminal computer device 3 is installed in a factory (so-called lab) of a lens processing company 6 that processes the inner surface progressive multifocal lens L, and processes the inner surface progressive multifocal lens L as shown in FIG. The NC machine tool (processing machine) 61 is connected to the NC machine tool 61 to form a processing device 60 that processes the progressive multifocal lens L.
Although not shown, the NC machine tool 61 analyzes the NC machining program, obtains the movement amount and movement speed of the tool of the machine tool main body, outputs the numerical control device to the machine tool main body, the tool, and drives this tool. A machine tool main body having a drive unit and the like.
The terminal computer apparatus 3 includes a communication control unit 31 that controls input / output of data from the network 4 and the like, a central processing unit 32 that includes a CPU that executes various programs, and a memory that stores data. A unit 33, an NC machine tool 61, a keyboard, and an input / output control unit 34 connected to an input device 62 for inputting data such as a mouse.

The central processing unit 32 is a part that extracts or processes necessary data from the data input from the communication control unit 31, and includes a design data acquisition unit 321, an inspection result acquisition determination unit 322, and an NC. A processing program generation unit 323, an encryption / decryption unit 324, a prescription data acquisition unit 325, and an inspection data acquisition unit 326 are included.
The prescription data acquisition unit 325 receives an inner surface progressive multifocal lens L input from the input / output control unit 34.
To obtain prescription data. The acquired prescription data is stored in the prescription data storage unit 331 of the storage unit 33 and distributed to the server device 2 via the communication control unit 31.
Here, examples of the prescription data include spherical power, astigmatism power, astigmatism axis, aberration, addition power, and the like.

The design data acquisition unit 321 acquires design data of the inner surface progressive multifocal lens L among data distributed from the server device 2 via the network 4. Since the design data distributed from the server device 2 is encrypted, it is decrypted by the encryption / decryption unit 324 using the public key distributed in advance, and the encryption is released. The public key is stored in the public key storage unit 332 of the storage unit 33.
Since the design data thus decrypted is configured as point cloud data, the NC machining program generation unit 323 performs surface interpolation to generate an NC machining program. Examples of the surface interpolation method include curved surface interpolation using a Pezier curve, a quadratic spline function, or the like. The NC machining program created in this way is stored in the NC machining program storage unit 333 of the storage unit 33. Further, this NC machining program storage unit 333
The NC machining program stored in is transferred to the NC machine tool 61 via the input / output control unit 34.
Note that the NC machining program is composed of a series of instruction blocks, and includes route information, speed information, and the like. The route information is information indicating a command of a predetermined movement locus, and has a G code for designating operation preparation functions such as linear interpolation, circular interpolation, and temporary stop. The speed information has an F code that designates the feed speed.

The inspection data acquisition unit 326 acquires inspection data among data distributed from the server device 2 via the network 4. As the data for inspection, details of which will be described later, for example, a measurement predicted value (so-called target value) at the lens meter of the inner surface progressive multifocal lens L can be mentioned. Inspection of the inner surface progressive multifocal lens L processed on the basis of the measurement predicted value with the lens meter acquired by the inspection data acquisition unit 326 is performed.
The inspection data acquired by the inspection data acquisition unit 326 is stored in the inspection data storage unit 335.

The inspection result acquisition determination unit 322 acquires the actual measurement value of the inner surface progressive multifocal lens L processed by the NC machine tool 61, compares the actual measurement value with the predicted measurement value (so-called target value), and determines whether or not it is acceptable. is there. In the inspection result acquisition determination unit 322, the inspection data acquired by the inspection data acquisition unit 326 is compared with the actual measurement value of the lens meter. It is determined that the lens L has been accurately manufactured. Examples of inspection items in the lens meter include spherical power, astigmatism power, astigmatism axis, aberration, and addition power. When it is determined that the difference between the inspection data and the actual measurement value exceeds a predetermined value, the communication control unit 31 sends the inspection result (determination between the actual measurement value and the inspection data and the result of the failure). Output from. Then, this inspection result is distributed to the server device 2 via the network 4.
Note that the inspection result acquired by the inspection result acquisition determination unit 322 is stored in the inspection result storage unit 334 of the storage unit 33.

The server device 2 is managed by a design data creator 5, for example, a spectacle lens manufacturer. Here, in this embodiment, the design data creator 5 is a spectacle lens manufacturer, and also manufactures the semi-finished lens described above. Therefore, the design data created by the server device 2 of the design data creator 5 according to the present embodiment is most suitable for processing the semi-finished lens produced by the design data creator 5 to produce the inner progressive multifocal lens L. The design data is suitable.
As shown in FIG. 4, the server device 2 includes a communication control unit 21 that controls input / output of data via the network 4, a central processing unit 22 that includes a CPU that executes various programs, and the like. And a storage unit 23 for storing data.
The communication control unit 21 is a part that realizes connection with the terminal computer device 3 via the network 4. When the lens processor 6 accesses the server device 2 by operating the terminal computer device 3, the communication control unit 21. Confirms whether or not the terminal computer device 3 is permitted to access and secures communication with the permitted terminal computer device 3. That is, the communication control unit 21 serves as a distribution unit that distributes design data and inspection data.

The central processing unit 22 acquires a contract acceptance information acquisition unit 221, a prescription data acquisition unit 222 that acquires prescription data of the inner surface progressive multifocal lens L from the lens processor 6, and an inspection result from the lens processor 6. An inspection result acquisition unit 223, a reference design data selection unit 224,
Arrangement design unit 225, correction design unit 226, aim value calculation unit 227, and encryption unit 228
And a charging unit 229.

The contract acceptance information acquisition unit 221 acquires contract acceptance information when the lens processing company 6 accepts the contract described above. When the lens processing company 6 purchases a processing device 60 for processing a lens such as the inner surface progressive multifocal lens L, when the terminal computer device 3 of the processing device 60 is connected to the network 4, the display unit ( A screen prompting the consent of the contract is displayed in (not shown). When the lens processor 6 agrees to the contract, a screen for prompting user registration is displayed, and the lens processor 6 inputs a name, an address, a telephone number, and the like as user information. These pieces of user information together with the contract acceptance information are acquired by the contract acceptance information acquisition unit 221 via the network 4.
The information acquired by the contract acceptance information acquisition unit 221 is stored in the user information registration database 231 of the storage unit 23.
Further, the contract acceptance information acquisition unit 221 generates an access ID and a password, and stores them in the user information registration database 231. The generated access ID and password are sent to the lens processing company 6.

The prescription data acquisition unit 222 acquires prescription data distributed from the lens processor 6 when the above-described contract is agreed. A management number is assigned to the acquired prescription data and stored in the prescription data storage unit 232 of the storage unit 23.

The reference design data selection unit 224 obtains reference design data from a plurality of reference design data stored in the reference design data storage unit 233 of the storage unit 23 based on the addition degree of the prescription data acquired by the prescription data acquisition unit 222. To choose. As shown in FIG. 5, the reference design data is obtained by dividing the reference progressive surface L6 into a lattice shape, and the lattice point P (
X, Y, Z) having a point group consisting of three-dimensional coordinate data.

The arrangement design unit 225 changes the design of the reference design data acquired by the reference design data selection unit 224 based on the prescription data.
For example, the arrangement design unit 225 changes the design of the curvature of the progressive surface (eyeball side surface) based on the spherical power, which is one of the prescription data. Accordingly, the value of Z at an arbitrary point (X, Y, Z) on the eyeball side surface of the inner surface progressive multifocal lens L is obtained.
That is, the value of Z is represented by the following formula (1).
The axis extending from the object side to the eyeball side and passing through the center of the progressive surface (eyeball side surface) is the Z axis, the axis perpendicular to the Z axis from the bottom to the top is the Y axis, and the Z axis is from the left to the right. X and Y of an arbitrary point (X, Y, Z) indicate the X coordinate of the surface on the eyeball side and the arbitrary coordinate of the Y coordinate, respectively, and Z is the eyeball. The Z coordinate of the side surface is shown.

Here, the eyeball side surface is an original progressive refraction surface only for the purpose that the eyeball side surface exhibits a desired visual acuity correction characteristic, and the eyeball side surface only exhibits a desired astigmatism correction characteristic. It is obtained by synthesizing the original original toric surface.
Cp represents an approximate curvature as an average curvature in the radial direction of the original progressive surface. Cx represents the curvature of the original toric surface in the X-axis direction, and Cy represents the curvature of the original toric surface in the Y-axis direction.
Cx is represented by the following formula (2).

Cb is the curvature (base curve) of the object side surface of the reference design data, that is, the outer surface side surface.
Csf is the curvature (base curve) of the surface on the outer surface side of the semi-finished lens. N is the refractive index of the semi-finished lens, and S is the spherical power of the prescription data.
Cy is represented by the following formula (3).

  Ct indicates a curve for astigmatism.

The design data designed in this way is stored in the design data storage unit 234 of the storage unit 23.
When it is known that the design data designed by the arrangement design unit 225 needs to be corrected in advance, the data designed by the arrangement design unit 225 is corrected by the correction design unit 226 described later in advance, Thereafter, the data may be stored in the design data storage unit 234 of the storage unit 23.

The aim value calculation unit 227 is an inspection data generation unit that generates inspection data for inspecting the optical characteristics of the inner surface progressive multifocal lens L. This target value calculation unit 227 performs surface interpolation on the design data composed of the point group designed by the arrangement design unit 225, and then uses the ray tracing method to actually measure the lens data of the inner surface progressive multifocal lens L. The measurement value is predicted and calculated. In the inner surface progressive multifocal lens L, the progressive surface which is the eyeball side surface is formed of an aspherical surface. Therefore, when the user actually wears spectacles, the line of sight and the eyeball side surface of the spectacle lens are Not orthogonal. However, when measuring with a lens meter, the measurement is performed with the optical axis orthogonal to the eyeball side surface. Therefore, there is a difference between the prescription data value and the measured value. For this reason, an actual measurement value of the lens progressive of the inner surface progressive multifocal lens L is predicted and calculated in advance, and this predicted value (target value) is used as inspection data.

For example, when the prescription of the inner surface progressive multifocal lens L is the near portion L2, the spherical refractive power S is + 4D.
When the cylindrical refractive power C is −2D and the astigmatic axis is 10 °, the target value is, for example, the spherical refractive power S is +
4.1D, cylindrical refractive power C is -1.7D, and the astigmatic axis is 10 °.
Since the calculated value (target value) calculated by the target value calculation unit 227 is used for the inspection of the inner surface progressive multifocal lens L, the terminal computer of the lens processor 6 is used as inspection data via the network 4. Distributed to the device 3.

The inspection result acquisition unit 223 acquires the inspection result of the inner surface progressive multifocal lens L distributed from the lens processor 6 via the network 4. When the inspection result is acquired by the inspection result acquisition unit 223, the design data stored in the design data storage unit 234 is read by the correction design unit 226, and the design data correction process is performed based on the inspection result. Done.

The correction design unit 226 compares, for example, the frequency of the distance portion L1 of the progressive progressive multifocal lens L or the frequencies of the distance portion L1 and the near portion L2 with the target value among the actually measured values included in the inspection result. Then, the deviation from the target value is calculated again, the deviation between the actually measured value and the target value is confirmed, and the design data is corrected.
For example, the correction amount of the curvature in the X-axis direction in the distance portion L1 is Cdx, the correction amount of the curvature in the Y-axis direction is Cdy, the correction amount of the curvature in the X-axis direction in the near portion L2 is Cnx, and the curvature in the Y-axis direction Is Cny, the center coordinates of the distance portion L1 are (Xd, Yd), and the center coordinates of the near portion L2 are (Xn, Yn).
In this case, the correction amounts Cpx and Cpy of the progressive portion L3 are as shown in equations (4) and (5).

Here, Y is the value of the Y coordinate where the correction amount is obtained.
By substituting these correction amounts (Cdx, Cdy, Cnx, Cny, Cpx, Cpy) into Cx and Cy in Equation (1), the correction amount of the Z coordinate is calculated.

The encryption unit 228 encrypts the design data designed by the arrangement design unit 225 or the design data corrected and designed by the correction design unit 226 with a secret key when delivering the design data to the network 4 via the communication control unit 21. To do. The design data encrypted with the secret key is assigned an identification number and the like, and can be decrypted only with the public key corresponding to the identification number attached to the design data.
The encrypted design data is distributed to the terminal computer device 3 of the lens processing company 6 via the network 4.
Note that the encryption method is not limited to the method described above, and a known method can be used.

The charging unit 229 includes a distribution count unit 229A that counts the number of times design data is distributed from the communication control unit 21, and a charging information generation unit 229B that generates charging information for the lens processing company based on the counted number of distributions. Have
The charging information generation unit 229B, based on the number of distributions by the distribution number counting unit 229A,
Consideration is calculated every month or every six months, and billing information is generated. For example, the storage unit 2
3 is issued to a so-called financial VAN (Value-Added Network) which is an added value communication network managed by each financial institution via the network 4 based on the data stored in the user information registration database 231 of FIG. Built Farm Banking:
FB) is used for payment processing, processing for payment processing is distributed to the terminal computer device 3 via the network 4, and guidance for prompting payment processing is notified to the lens processing company 6.

Here, as the consideration, when the design data creator 5 has a patent right for the inner surface progressive multifocal lens L, the license fee can be exemplified.
In addition, the billing unit 229 may generate the billing information by calculating the design fee of the inner surface progressive multifocal lens L as a price as well as the price based on the number of times design data is provided from the communication control unit 21.
The distribution count unit 229A of the charging unit 229 obtains the number of times that the inspection result is acquired by the inspection result acquisition unit 223, the design data is corrected by the correction design unit 226, and the design data is distributed again from the communication control unit 21. In this configuration, the design data is subtracted from the total distribution count.

The storage unit 23 includes a user information registration database 231 that registers user data acquired by the contract acceptance information acquisition unit 221, a prescription data storage unit 232 that stores prescription data acquired by the prescription data acquisition unit 222, and reference design data Storage unit 233 and design data storage unit 2
34, a key storage unit 235 and an inspection data storage unit 236 are provided.
The user information registration database 231 is a part that stores information on the contracted lens processing company 6 and includes a design data provision status table and a user master table.
The design data provision status table stores the number of times design data is distributed for each lens processing company 6, the number of times design data is corrected, and the like.
The user master table is a table for managing user information.
The user code, name, address, telephone number, access ID, password and other information are registered in association with each other.

The prescription data storage unit 232 stores prescription data distributed from each lens processor 6 in association with each lens processor 6, and a management number is assigned to each prescription data.
The reference design data storage unit 233 stores a plurality of reference design data of the inner surface progressive multifocal lens L corresponding to a plurality of different addition powers. For example, reference design data corresponding to each addition increased by 0.25 D in the range of addition 0.50D to 3.50D is stored.
Such reference design data is configured based on design parameters such as addition, progressive zone length, change in progressive zone frequency, progressive zone width, and the like.

The design data storage unit 234 stores the design data designed by the arrangement design unit 225 and the design data corrected by the correction design unit 226. The design data is each lens processor 6 that provides the design data. And associated with the management number assigned to the prescription data.
The key storage unit 235 stores a secret key corresponding to the public key distributed to the lens processing company 6, and is stored in association with each lens processing company 6.
The inspection data storage unit 236 stores the target value calculated by the target value calculation unit 227, and is stored in association with each lens processor 6 and the management number assigned to the prescription data.

Next, a design data providing method using the design data providing system 1 as described above will be described with reference to FIGS.
First, the design data creator 5 gives an internal progressive multifocal lens L to the processing device manufacturer 7.
On the condition that the processing apparatus 60 to be sold is provided with the above-mentioned contract (the lens processing company 6 that purchases the processing apparatus 60 pays the design data preparation company 5 for a fee). A contract with a content of attaching a design data supplier 5 to receive the design data of the inner surface progressive multifocal lens L is presented.
The processing device manufacturer 7 here refers to a manufacturer that manufactures and sells the processing device 60 that processes a lens such as the inner surface progressive multifocal lens L.
If the processing equipment manufacturer 7 accepts the contract presented by the design data creator 5,
The design data creator 5 provides a technique for manufacturing the inner surface progressive multifocal lens L. The processing device manufacturer 7 can manufacture and sell the processing device 60 that can manufacture the inner surface progressive multifocal lens L of the quality desired by the design data creator 5 by receiving the manufacturing technology of the inner surface progressive multifocal lens L. It becomes like this.

Next, the processing device manufacturer 7 attaches the above-mentioned contract to the processing device 6 from the lens processing company 6.
Buy 0.
The lens processing company 6 who purchased the processing device 60 receives the terminal computer device 3 of the processing device 60.
Is connected to the network 4 from the design data creator 5 on the condition that the contract (lens processor 6 pays the design data creator 5) to the display unit (not shown) of the terminal computer device 3. A screen prompting the consent of the contract to receive the design data of the inner surface progressive multifocal lens L is displayed. When the lens processor 6 agrees to the contract, a screen prompting user registration is displayed, and the lens processor 6 inputs a name, an address, a telephone number, and the like. These pieces of information are distributed from the terminal computer device 3 (processing S1) and acquired by the contract compliance information acquisition unit 221 of the server device 2 via the network 4 (contract compliance information acquisition procedure, processing S2). Information acquired by the contract acceptance information acquisition unit 221 is stored in the user information registration database 231 of the storage unit 23.
If the lens processing company 6 does not agree with the contract, the design data cannot be provided from the design data preparation company 5. However, if the lens processing company 6 does not agree, it may hinder the driving of the processing device 60. Absent.

Next, when the lens processor 6 operates the terminal computer device 3 to request access to the server device 2 (processing S3), the communication control unit 21 of the server device 2 prompts the user to input an access ID, a password, and the like. When the access ID and password are transmitted from the terminal computer device 3, the communication control unit 21 of the server device 2 permits or denies access. For example, the transmitted access ID and password, and the access I stored in the user information registration database 231
D, the password is compared, and if the access ID, password, etc. match, access is permitted (usage permission procedure, process S4).
When the lens processor 6 inputs prescription data to the terminal computer device 3, the prescription data is acquired by the prescription data acquisition unit 325 of the terminal computer device 3 and distributed to the server device 2 via the communication control unit 31 (processing). S5).

In the server device 2, the prescription data acquisition unit 222 acquires prescription data (prescription data acquisition procedure, process S6). This prescription data is stored in the prescription data storage unit 232 of the storage unit 23 of the server device 2. Next, the server device 2 generates design data corresponding to the prescription data (design data generation procedure). More specifically, first, the reference design data selection unit 224 selects reference design data from the reference design data storage unit 233 of the storage unit 23 based on the addition degree of the prescription data (processing S7).
Here, the server device 2 selects a semi-finished lens to be used based on the prescription data.

Further, the arrangement design unit 225 of the server device 2 processes the reference design data acquired by the reference design data selection unit 224 based on the prescription data and the selected semi-finished lens (processing S8). The design data obtained as a result is stored in the design data storage unit 234 of the storage unit 23.
In the server device 2, based on the prescription data acquired by the prescription data acquisition unit 222, the target value calculation unit 227 calculates a target value as inspection data (inspection data generation procedure, process S 9). The target value is stored in the inspection data storage unit 236.
The design data and the target value calculated as described above are distributed from the communication control unit 21 (design data distribution procedure, process S10), (inspection data distribution procedure, process S11). In addition,
The design data is encrypted and distributed by the encryption unit 228.

In the terminal computer device 3, the target value is acquired by the inspection data acquisition unit 326 (processing S12), and the design data is acquired by the design data acquisition unit 321 (processing S13).
The design data acquired by the design data acquisition unit 321 is decrypted by the encryption / decryption unit 324, and is generated as an NC processing program by the NC processing program generation unit 323 (processing S14). This NC machining program is transferred to the NC machine tool 61.
The lens processor 6 uses the semi-finished lens selected by the server device 2 and uses the NC.
The semi-finished lens is cut or ground by the machine tool 61 (process S).
15). Thereby, the inner surface progressive multifocal lens L can be obtained.

Next, the obtained inner surface progressive multifocal lens L is inspected (inspection procedure, process S16).
The lens processor 6 measures the manufactured inner surface progressive multifocal lens L using a lens meter, and inputs an actual measurement value to the terminal computer device 3. Then, in the inspection result acquisition determination unit 322, an actual measurement value is acquired. Further, the target value that is the inspection data stored in the inspection data storage unit 335 is read, and the target value is compared with the actual measurement value. When the deviation between the target value and the actual measurement value is equal to or less than a predetermined value, it is determined that the inner surface progressive multifocal lens L having desired optical characteristics is manufactured.

On the other hand, if the deviation between the target value and the actual measurement value exceeds a predetermined value, it is determined that the inner surface progressive multifocal lens L having the desired optical characteristics is not manufactured, and the inspection result (the actual measurement value and the actual measurement value). And a deviation from the target value) are transmitted from the communication control unit 31 (processing S17).
The inspection result is acquired by the inspection result acquisition unit 223 of the server device 2 (inspection result acquisition procedure, process S18). Then, the design data stored in the design data storage unit 234 is read by the correction design unit 226, and the design data is corrected based on the inspection result acquired by the inspection result acquisition unit 223 (correction procedure, processing) S19).
The server device 2 again distributes the design data corrected by the correction design unit 226 to the terminal computer device 3 via the communication control unit 21 (correction design data distribution procedure, process S20). In the terminal computer apparatus 3, the processes from Step S13 to Step S15 are performed again, and the inspection result acquisition determination unit 322 performs determination again (Process S16). Then, the inspection data acquisition unit 326
Steps S13 to S20 are repeated until the difference between the target value acquired in step 1 and the actual measurement value is equal to or less than a predetermined value.
In the design data providing system 1, the accounting unit 229 of the server device 2 is used.
Then, based on the number of times design data is provided from the communication control unit 21, the price is calculated every month or every six months, and billing information is generated. When counting the number of times the design data is distributed, the number of times the inspection result is acquired by the inspection result acquisition unit 223, the design data is corrected by the correction design unit 226, and the design data is distributed from the communication control unit 21 again. Is deducted from the total number of deliveries. Then, for example, an invoice is issued to the lens processor 6 based on the data stored in the user information registration database 231 of the storage unit 23.

Therefore, according to this embodiment, the following effects can be produced.
(1) According to the design data providing system 1 of this embodiment, the design data created by the design data creator 5 based on the prescription data is provided to the lens processor 6 that processes the internal progressive multifocal lens L. Therefore, the lens processor 6 can process a desired inner surface progressive multifocal lens L.
(2) Further, between the lens processor 6 and the design data creator 5, the lens processor 6
Since the contract for receiving the design data for the inner surface progressive multifocal lens L has been made on the condition that the design data creator 5 is paid to the design data creator 5, the design data creator 5 surely obtains the price. be able to.

(3) The server device 2 on the design data creator 5 side stores reference design data corresponding to the degree of addition, and the reference design data is processed according to the prescription data, so the data is created from the beginning. Compared to the case, the data creation time can be shortened. Therefore, the design data can be quickly provided to the lens processor 6.
(4) Since the server device 2 on the side of the design data creator 5 includes the correction design unit 226, data for inspection by the terminal computer device 3 on the lens processor 6 side and actual measurement of the inner surface progressive multifocal lens L When it is determined that the deviation from the value exceeds the predetermined value, the design data can be corrected and distributed to the terminal computer device 3 again. Thereby, more accurate design data can be provided.

(5) The server device 2 on the side of the design data creator 5 includes an aim value calculation unit 227, and predicts and calculates actual measurement values with the lens meter of the inner surface progressive multifocal lens L using the ray tracing method. Then, since it is distributed to the terminal computer device 3, it is possible to easily and accurately inspect the inner surface progressive multifocal lens L manufactured on the lens processor 6 side.
(6) Further, since the server device 2 charges according to the number of times the design data is distributed, the consideration for providing the design data can be reliably collected. In particular, when the design data creator 5 has a patent right or the like of the inner surface progressive multifocal lens L, the license fee can be collected as a consideration.

(7) Furthermore, the billing unit 229 of the server device 2 on the design data creator 5 side corrects the design data by the correction design unit 226 when the billing information is generated, and distributes the design data again from the communication control unit 21. Is subtracted from the total number of times design data is provided. In this way, the server device 2 can accurately collect the consideration without charging when the design data having a shifted value is created and provided.

(8) Furthermore, in the design data providing system 1 of the present embodiment, the design data creator 5
However, on condition that the processing device manufacturer 7 is provided with technology for manufacturing the inner surface progressive multifocal lens L, the processing device 60 to be sold has a predetermined contract (the lens processing company 6 who purchases the processing device 60). Attaches a contract to receive design data of the inner surface progressive multifocal lens L from the design data creator 5 on condition that the design data creator 5 of the inner surface progressive multifocal lens L is paid. The contract of the contents is done.
By doing in this way, the processing apparatus maker 7 receives a manufacturing technology for the inner surface progressive multifocal lens L, thereby providing a processing apparatus capable of manufacturing the inner surface progressive multifocal lens L of the quality desired by the design data creator 5. Can be manufactured and sold.

(9) Furthermore, in this embodiment, the design data creator 5 is a spectacle lens manufacturer, and also manufactures the semi-finished lens described above. The design data created by the server device 2 on the design data creator 5 side is the design data most suitable for manufacturing the inner progressive multifocal lens L by processing the semi-finished lens produced by the design data creator 5. Since the design data creator 5 provides the design data, the design data creator 5
The number of semi-finished lenses manufactured by can be increased.
(10) In this embodiment, the lens processor 6 who has purchased the processing device 60 to which a predetermined contract is attached connects the terminal computer device 3 of the processing device 60 to the network 4 and accepts the contract. Yes. Therefore, since the contract is attached to the processing device 60 and the contract can be made via the network 4, the design data creator 5 is in a case where the address of the processing device 60 is not known. Even you can make a contract reliably.

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 embodiment, the server device 2 calculates the target value as the inspection data. However, the present invention is not limited to this. For example, the aberration diagram of the inner surface progressive multifocal lens L is generated as the inspection data. It may be distributed to the terminal computer device 3 via the network 4. In this way, the inspection can be performed by comparing the shape of the progressive surface of the inner surface progressive multifocal lens L obtained on the lens processor 6 side with the aberration curve of the aberration diagram.
The server device 2 may be configured not to include an inspection data generation unit that generates inspection data.
Furthermore, in the embodiment, the server device 2 includes the charging unit 229 that charges according to the number of times design data is provided. However, the server device may not include the charging unit 229. For example, the lens processor 6 may apply to the design data creator 5 for the number of processed inner surface progressive multifocal lenses L, and the design data creator 5 may request a price in accordance with the processed number.

Moreover, in the said embodiment, although the data comprised from a point group were delivered as design data delivered from the server apparatus 2, you may deliver the data which carried out the surface interpolation of the point group from the server apparatus 2. FIG. In this case, when the deviation (for example, the difference in Z value) at each point is large in the point group, the deviation may be corrected (ie, smoothed) and subjected to surface interpolation. By providing data with the deviation corrected in this way, correction of point cloud data or the like on the lens processor 6 side becomes unnecessary, and more optimal data can be provided.
Further, by providing the surface-interpolated data, it is not necessary to perform surface interpolation in the terminal computer device 3, so that the operation in the terminal computer device 3 can be simplified.
Further, as the design data distributed from the server device 2, data composed of point clouds has been distributed. However, even if an NC machining program is generated from the design data and the NC machining program is distributed from the server device 2. Good. This eliminates the need for conversion of the NC machining program in the terminal computer device 3, thereby eliminating the labor required for machining the inner surface progressive multifocal lens L.

In the embodiment, when the lens processor 6 connects the terminal computer device 3 of the processing device 60 to the network 4, a screen for prompting the agreement of the contract is displayed on the display unit (not shown) of the terminal computer device 3. When the agreement is accepted, the contract acceptance information is distributed to the server device 2 via the network 4. However, the present invention is not limited to such a configuration. For example, the processing device 60
It is also possible to attach a written contract, sign the agreement, and mail it to the design data creator 5. The design data creator 5 may input the contract acceptance information into the server device 2 after confirming the signature of the contract.
Furthermore, in the said embodiment, the terminal computer apparatus 3 has the test result acquisition discrimination | determination part 322, and discriminate | determined whether the shift | offset | difference with a target value and a measured value is below a predetermined value, but it is not restricted to this, For example, An inspection result acquisition discriminating unit is provided in the server device 2, and the actual measurement value is distributed from the terminal computer device 3 to the server device 2 via the network 4. It may be determined whether or not there is.

In the above embodiment, the reference design data is stored in the reference design data storage unit 233 of the server device 2. However, the present invention is not limited to this. For example, the reference design data may be stored in the terminal computer device 3. Good. In this case, when prescription data is acquired by the server device, the server device selects reference design data to be used, and processes the selected reference design data to generate design data. Then, this is distributed to the terminal computer device.
In this way, by storing the reference design data in the terminal computer device 3, it is possible to reduce the burden on the server device 2.
At this time, the server device 2 may be configured to generate new reference design data and update the reference design data in the terminal computer device.

  The present invention can be used to provide design data for an inner surface progressive multifocal lens.

The schematic diagram which shows the design data provision system concerning embodiment of this invention. The figure which shows an inner surface progressive multifocal lens. The block diagram which shows the structure of a terminal computer apparatus. The block diagram which shows the structure of a server apparatus. The figure which shows the state which divided the progressive surface in the grid | lattice form. The flowchart which shows each procedure of the design data provision method concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Design data provision system, 2 ... Server apparatus (host computer apparatus), 3 ... Terminal computer apparatus, 4 ... Network, 5 ... Design data preparation company, 6 ... Lens processing company,
60 ... Processing device, 221 ... Contract acceptance information acquisition unit, 222 ... Prescription data acquisition unit, 223 ... Inspection result acquisition unit, 224 ... Reference design data selection unit, 225 ... Arrangement design unit, 226 ... Correction design unit, 227 ... Aim Value calculation unit, 229... Billing unit, 233... Reference design data storage unit, 23
4 ... Design data storage unit, L ... Inner surface progressive multifocal lens.

Claims (5)

A distance portion and a near portion having different refractive powers, and a progressive portion in which the refractive power progressively changes therebetween, and the distance portion, the near portion, and the progressive portion on the inner surface located on the eyeball side. A terminal computer device connected to a processing machine purchased by a lens processor to provide design data of an inner surface progressive multifocal lens to which a curvature constituting the part is added, and the terminal computer device and a communication line Executed on a system comprising a host computer device connected and managed by a design data producer;
The host computer apparatus complies with a contract for receiving supply of design data of an inner surface progressive multifocal lens used for the processing machine control on condition that the lens processor pays the design data creator. Contract acceptance information acquisition procedure for acquiring information to the effect,
A prescription data acquisition procedure for acquiring prescription data of an inner progressive multifocal lens from the lens processor through a communication line on the condition that it has been accepted,
A design data generation procedure for generating design data according to the prescription data;
A design data providing method comprising: a design data distribution procedure for distributing the generated design data to the terminal computer device. The method of providing design data according to claim 1,
The design data generation procedure includes:
Selecting predetermined reference design data based on the acquired prescription data from a plurality of reference design data corresponding to the addition degree of the inner progressive multifocal lens stored in advance;
And a step of processing the selected reference design data based on the prescription data. In the design data providing method according to claim 1 or 2,
An inspection data generation procedure for generating inspection data for inspecting optical characteristics of the spectacle lens after processing from the generated design data;
An inspection data distribution procedure for distributing the generated inspection data to the terminal computer device;
An inspection result acquisition procedure for acquiring an inspection result of the spectacle lens based on the inspection data;
A correction procedure for correcting the design data based on the acquired inspection result;
A design data providing method comprising: a corrected design data distribution procedure for distributing corrected design data to a terminal computer device. In the provision method of the design data in any one of Claim 1 to 3,
Distribution frequency counting procedure to count the number of times design data is distributed according to the design data distribution procedure,
A design data provision method comprising: a billing information generation procedure for generating billing information for the lens processor based on the counted number of distributions. A distance portion and a near portion having different refractive powers, and a progressive portion in which the refractive power progressively changes therebetween, and the distance portion, the near portion, and the progressive portion on the inner surface located on the eyeball side. A design data providing system for providing design data of an inner surface progressive multifocal lens to which a curvature constituting a part is added,
A terminal computer device connected to a processing machine purchased by a lens processor, and a host computer device connected to the terminal computer device via a communication line and managed by a design data creator;
The host computer apparatus complies with a contract for receiving supply of design data of an inner surface progressive multifocal lens used for the processing machine control on condition that the lens processor pays the design data creator. A contract acceptance information acquisition unit for acquiring information to the effect,
A prescription data acquisition unit for acquiring prescription data of an inner progressive multifocal lens from the lens processor through a communication line;
A reference design data acquisition unit for selecting predetermined reference design data based on the acquired prescription data from a plurality of reference design data according to the addition degree of the inner surface progressive multifocal lens stored in advance;
An arrangement design unit for processing the selected reference design data based on the prescription data;
A design data providing system comprising: a distribution unit that distributes the processed design data to the terminal computer device.

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