JP7081996B2 - A device and method for acquiring shape data of a spectacle frame, a system for providing a lens, and a program for controlling the device. - Google Patents

Description

The present disclosure relates to spectacle lenses, and more specifically to techniques for acquiring data for processing lenses mounted on frames.

In the provision of spectacles, a technique for processing a lens to fit the shape of a frame selected by a user of spectacles is known. For example, Japanese Patent Application Laid-Open No. 2012-185490 (Patent Document 1) discloses a technique for "acquiring a spectacle lens processed shape including a stepped spectacle lens processed shape". According to the technology, "Instead of the built-in lens attached to the rim of the spectacle frame, the spectacle lens processing shape acquisition method for attaching a prescription lens having a thicker edge than the built-in lens to the rim is the built-in lens. It has a lens contour acquisition step of acquiring the contour of the lens, and a rim boundary acquisition step of acquiring the inner boundary of the rim on the provided lens surface with the attached lens attached to the rim. The outer shape of the prescription lens is obtained based on the contour, and the stepped shape of the prescription lens is obtained based on the inner boundary of the rim "(see [Summary]).

Japanese Unexamined Patent Publication No. 2012-185490

According to the conventional technique, the step processing around the entire circumference of the lens is performed by using the step amount obtained by the measurement, but the outer shape of the step-processed lens is not always excellent in quality. It was hard to say. In many cases, a preliminary machining test was required before step machining, or size fine adjustment, step shape correction and other fine corrections were required after step machining.

Further, according to the conventional technique for acquiring the outer shape, it can be realized only when a person who obtains the outer shape of the lens, such as a processor, has a frame at hand, but it is troublesome and time-consuming. In some cases, the accuracy was not good. For example, when scanning the outer shape of a lens, the dummy lens is removed from the frame, placed horizontally on the base of the scanner with the concave surface of the dummy lens facing up, and then two-dimensionally scanned by the scanner. Was being done. In this case, it is hard to say that the lens with the concave surface facing up is in a horizontal state, and as a result, the outer shape of the lens after step processing and the shape of the rim of the frame do not match, and the lens is put in the frame. It didn't look good later. In addition, PD (Pupillary Distance) deviation and axis deviation also occurred.

Therefore, there is a need for a technique for improving the accuracy of lens step processing. Further, there is a need for a technique for processing the outer shape of the lens so that PD deviation and axis deviation do not occur.

The present disclosure has been made to solve the above-mentioned problems, and an object in a certain aspect is to provide an apparatus for measuring the shape of a spectacle frame so as to improve the processing accuracy of a lens. That is. An object in another aspect is to provide a device capable of processing a lens according to the shape of the frame even if the frame is not at hand.

The purpose in other aspects is to provide a system that improves the processing accuracy of the lens. An object in another aspect is to provide a method for measuring the shape of a spectacle frame so that the processing accuracy of the lens is improved. Still another aspect is to provide a program for controlling a device for measuring the shape of a spectacle frame so as to improve the processing accuracy of the lens.

According to certain embodiments, a device for measuring the shape of the spectacle frame is provided. This device is an acquisition means for acquiring the shape data of the outer shape of the frame and the shape data of the rim of the frame, and the rim so that the reference point of the shape data of the rim becomes the frame center based on the shape data of the outer shape. It is provided with a conversion means for converting the shape data of the above and an output means for outputting the shape data of the outer shape and the shape data of the converted rim.

According to another embodiment, the device for measuring the shape of the spectacle frame has an acquisition means for acquiring the shape data of the outer shape of the frame and the shape data of the rim of the frame, and a reference point of the shape data of the outer shape. , A conversion means for converting the outer shape data and an output means for outputting the outer shape data and the converted rim shape data so as to be a frame center based on the rim shape data. ..

According to one embodiment, the output means further outputs a processing order for the lens fitted in the frame.

According to a certain embodiment, the device further includes a display device for displaying whether or not the lens can be processed based on the external shape data and the converted rim shape data.

According to an embodiment, acquiring the shape data of the outer shape of the frame is to calculate the tilt angle of the frame by three-dimensional measurement, to make the frame horizontal by tilting the frame by the tilt angle, and to make it horizontal. Includes measuring the outer shape of the frame.

According to certain embodiments, the acquisition means include a stylus.
According to certain embodiments, the stylus comprises either a stylus whose tip is a hemisphere or a stylus whose cross section is part of a circle.

According to one embodiment, acquiring rim shape data is to raise the stylus along the concave rim of the frame while pressing the cylindrical portion of the stylus against the frame, and after the stylus has stopped rising. It includes turning 360 degrees while maintaining contact between the stylus and the rim.

According to an embodiment, there is provided a lens comprising the apparatus according to any one of the above and an apparatus for outputting shape data of the outer shape of a frame output from the apparatus and shape data of a rim. A system for is provided.

According to certain embodiments, to provide a lens comprising the device according to any of the above and a 3D printer for manufacturing a lens based on the shape data of the outer shape of the frame and the shape data of the rim. The system is provided.

According to certain embodiments, a method for measuring the shape of the spectacle frame is provided. In this method, the step of acquiring the shape data of the outer shape of the frame, the step of acquiring the shape data of the rim of the frame, and the reference point of the shape data of the rim become the frame center based on the shape data of the outer shape. It includes a step of converting the shape data of the rim and a step of outputting the shape data of the outer shape and the shape data of the converted rim.

According to another embodiment, the method for measuring the shape of the spectacle frame is a step of acquiring the shape data of the outer shape of the frame, a step of acquiring the shape data of the rim of the frame, and a reference of the shape data of the outer shape. It includes a step of converting the outer shape data and a step of outputting the outer shape data and the converted rim shape data so that the point becomes the frame center based on the rim shape data.

According to other embodiments, a program for controlling a device for measuring the shape of the spectacle frame is provided. In this program, the step of acquiring the shape data of the outer shape of the frame in the horizontal state, the step of acquiring the shape data of the rim on the concave side of the frame, and the reference point of the shape data of the rim are the shape of the outer shape in the above device. The step of converting the shape data of the rim and the step of outputting the shape data of the outer shape and the shape data of the converted rim are executed so as to be a frame center based on the data.

According to still another embodiment, the program for controlling the device for measuring the shape of the spectacle frame is a step of acquiring the shape data of the outer shape of the frame and a step of acquiring the shape data of the rim of the frame in the device. And, the step of converting the outer shape data and the outer shape data and the converted rim shape data are output so that the reference point of the outer shape data becomes the frame center based on the rim shape data. To execute the steps.

In a certain aspect, the outer shape of the spectacle frame can be obtained with high accuracy, so that the processing accuracy of the lens can be improved. In another aspect, the lens can be processed according to the shape of the frame even if the frame is not at hand.

The above and other objects, features, aspects and advantages of the invention will become apparent from the following detailed description of the invention as understood in connection with the accompanying drawings.

It is a figure which shows the outline of the structure of the system 100 according to one Embodiment. FIG. 3 is a block diagram showing a hardware configuration of a general-purpose computer 200 that functions as a terminal 120 or a terminal 130. It is a flowchart which shows a part of the processing performed in the system 100. It is a figure which shows the appearance of the frame tracer 110. It is a figure which shows the state which the frame tracer 110 measures the external shape of the rim 401 of a frame 400 schematically. It is a figure which shows the appearance of the stylus 115 according to one Embodiment. It is a figure showing the state which the stylus 115 according to one Embodiment is in contact with the inner circumference of a rim 401. It is sectional drawing which shows the state which the stylus 115 and the rim 401 are in contact with each other according to one Embodiment. It is a figure which shows the outer shape of the rim 401 obtained based on the 2D shape data obtained by a frame tracer. It is a figure which shows the outer shape of the rim 401 obtained based on the 3D shape data obtained by a frame tracer.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are designated by the same reference numerals. Their names and functions are the same. Therefore, the detailed description of them will not be repeated.

[Overview]
First, the outline of the technical idea disclosed in the present embodiment will be described. In order to step-process the lens fitted in the frame, the frame shape data (step shape data) is acquired, for example, as follows.

(1) The measurer performs three-dimensional measurement of the frame shape using a known measuring device (frame tracer), and the measuring device calculates the tilt angle of the frame.

(2) When the tilt angle of the frame is calculated, the tilt mechanism of the measuring device tilts the frame by the same angle as the tilt angle to make the frame horizontal to one eye. The tilt mechanism is realized by, for example, the Frame Swing method mounted on a frame tracer (product number: GT5000) provided by HOYA Corporation.

(3) The measuring device measures the outer shape of the frame maintained horizontally. For example, the measuring device measures the outer shape of the frame by tracing the base portion (groove portion) of the rim into which the lens is fitted, and acquires the measurement result as the first frame shape.

(4) The measuring device acquires the second frame shape. For example, the measuring device raises the stylus along the concave rim of the frame while pressing the cylindrical portion of the stylus against the inner peripheral portion of the frame. When the protrusion of the stylus hits the frame, the stylus stops. When the stylus is stopped, the measuring device applies a load above the stylus to maintain the contact state between the stylus and the frame, and makes the stylus go around the inner circumference of the frame to make the three-dimensional shape data of the frame. To get.

(5) The measuring device converts the two acquired shape data into the conventional frame shape data, and converts the shape data of the rim on the concave side of the frame into a polar coordinate system (r (r) with reference to the frame center of the outer shape data. Convert to radius data in θ)). The reason for the conversion is that the frame center based on the frame shape data and the frame center based on the shape data of the rim do not match. Each converted data calculated by the measuring device is input to the data communication terminal. The data communication terminal is realized, for example, by a general-purpose computer having a well-known configuration. The data communication terminal is connected to the control device of the lens processing machine by the Internet, VPN (Virtual Private Network) or other communication lines. The processing machine is used by the provider of the entire eyeglass or lens. The control device is used by the business operator or by a third party who has a close relationship with the business operator.

(6) The data communication terminal transmits the processing order of the lens and the converted shape data acquired for the lens to the control device of the lens manufacturer. When the control device receives the processing order and each shape data, the order for requesting the step processing of the lens is established.

(7) The processing machine processes the lens based on each shape data. More specifically, the lens is put into the processing machine after marking and the lens block as in the normal cutting process. The control device transmits the first shape data (frame outer shape data) for outer shape processing and the second shape data (rim shape data) for step processing to the processing machine. .. The processing machine performs external shape processing and step processing based on the frame center of the frame shape as a reference of the position according to the given data.

(8) When the processing of the lens is completed, the lens maker measures the peripheral length of the lens and supplies the processed lens (also referred to as a cut lens) to the customer (glasses dealer). If an order has been issued to put the lens in the frame, the customer puts the lens in the frame (rim) of the frame. According to such a configuration, it is certain that the step shape formed on the outer periphery of the lens corresponds to the shape of the rim of the spectacle frame, so that the accuracy when the lens is fitted into the rim can be improved.

(9) If each shape data does not satisfy the conditions specified for lens processing, the control device may notify the data communication terminal to that effect.

(10) In still another aspect, a prototype of the lens may be created using each shape data acquired by the measurement of the spectacle frame. For example, a 3D printer using each shape data output from the frame tracer may manufacture the lens. In this case, the spectacle retailer can insert a prototype lens manufactured by a 3D printer into the spectacle frame selected by a general user. A general user can confirm the usability by wearing eyeglasses fitted with a prototype lens.

Since the step shape of the inner circumference of the frame is accurately acquired by the algorithm as described above, the outer peripheral portion of the lens fitted in the frame can also be accurately processed. As a result, the appearance of the entire spectacles including the frame and the lens can be improved.

The stepped lens is held by a stepped portion formed on the inner peripheral portion of the frame. As a result of improving the fitting accuracy between the lens and the frame, the lens is fitted in the predetermined position obtained by measurement with respect to the frame, so that defects such as PD misalignment or misalignment occur due to misalignment. Can be suppressed.

[System configuration]
A system 100 for providing eyeglasses will be described with reference to FIG. FIG. 1 is a diagram showing an outline of the configuration of the system 100 according to one embodiment. The system 100 is realized by the eyeglass dealer 101 and the lens maker 102. The eyeglass store 101 includes a frame tracer 110 and a terminal 120. The lens maker 102 includes a terminal 130 and a lens processing machine 140. The terminal 120 and the terminal 130 are bidirectionally connected to each other by, for example, the Internet or a VPN (Virtual Private Network).

The frame tracer 110 includes an input IF (Interface) 111, a control circuit 112, a tilt mechanism 113, an actuator 114, a stylus 115, an amplifier 116, an AD (Analog to Digital) converter 117, an arithmetic circuit 118, and the like. It has an output IF 119. The frame tracer 110 measures the shape of the frame of the spectacles, particularly the shape of the rim. For example, the frame tracer 110 traces the base of the rim (groove, rim line) and also traces the end that receives the lens. In a frame that follows a certain aspect, the rim that receives the lens is configured in a stepped shape.

The input IF 111 receives an input of an instruction to the frame tracer 110. The input IF 111 is realized by, for example, a touch panel or other soft key, a dial switch or other hard key.

The control circuit 112 controls the operation of the frame tracer 110 based on the instruction given to the input IF 111. In one aspect, the control circuit 112 controls the position of the tilt mechanism 113. In another aspect, the control circuit 112 sends a command to the actuator 114 to move or swivel the stylus 115.

The tilt mechanism 113 is configured to rotate in order to change the posture (tilt) of the frame. The tilt mechanism 113 changes the inclination of the tray on which the frame is placed, for example.

The actuator 114 swivels the stylus 115. Further, the actuator 114 moves the stylus 115 so as to rotate the inner circumference of the rim.

The amplifier 116 amplifies the analog signal output in response to the movement of the stylus 115. The amplified signal is input to the AD converter 117.

The AD converter 117 converts an analog signal into a digital signal. The digital signal is input to the arithmetic circuit 118.

The arithmetic circuit 118 calculates frame shape data, particularly rim shape data, using the input digital signal. For example, the arithmetic circuit 118 calculates the tilt angle of the frame by three-dimensional measurement, and measures the outer shape of the horizontal frame by tilting only the tilt angle. The calculated shape data includes two-dimensional data and three-dimensional data.

The output IF 119 outputs the shape data obtained by the arithmetic circuit 118 to the outside of the frame tracer 110. For example, the shape data is input to the terminal 120.

The terminal 120 receives the input of the data acquired by the frame tracer 110. The terminal 120 is realized, for example, by a general-purpose computer having a well-known configuration. The general-purpose computer may include a desktop terminal, a laptop terminal, a tablet terminal, and the like. The terminal 120 is connected to the terminal 130. The terminal 120 transmits each shape data obtained by measuring the frame and ordering data for requesting processing of the lens used for the frame to the terminal 130.

In the lens maker 102, the terminal 130 receives each data transmitted from the terminal 120. The terminal 130, like the terminal 120, is also realized by a general-purpose computer having a well-known configuration. The terminal 130 verifies by simulation whether or not lens processing using each received data is actually possible. When the terminal 130 confirms that the lens processing is actually possible, the terminal 130 transmits to the terminal 120 that the order for requesting the lens processing has been accepted. Further, the terminal 130 transmits the data to the lens processing machine 140. On the other hand, when the terminal 130 confirms that the lens processing using each received data cannot be realized, the terminal 130 notifies the terminal 120 to that effect and does not accept the order based on the order data. This can prevent the problem that the processed lens cannot be properly fitted into the groove (rim wire) provided on the inner circumference of the rim.

When the order is accepted, the lens processing machine 140 performs step processing of the lens using the shape data received from the terminal 120 by the terminal 130. When the processed lens is determined to be a non-defective product through a predetermined inspection process, the processed lens is transmitted to the eyeglass shop 101 as a processed lens.

In another aspect, the terminal 120 may transmit the shape data of the outer shape of the frame and the shape data of the rim to the terminal (not shown) used by the lens designer. Since the lens designer can design the lens using these shape data and change the specifications of the lens as needed, the design efficiency can be improved.

The frame tracer 110 shown in FIG. 1 is not limited to the following, but is of at least one processor (CPU), at least one ASIC (Application Specific Integrated Circuit), and / or at least one FPGA (Field Programmable Gate Array). It can be realized by a circuit including at least one integrated circuit such as. The at least one processor is configured to perform all or part of the functions of the frame tracer 110 by reading one or more instructions from at least one machine-readable tangible storage medium. Such storage media are, but are not limited to, all types of hard disks, all types of optical media such as CDs (Compact Discs) or DVDs (Digital Verstaile Discs), and all types such as volatile and non-volatile memories. It can take many forms, including semiconductor memory. The volatile medium may include DRAM (Dynamic Random Access Memory) and SRAM (Static Random Access Memory). The non-volatile medium may include ROM (Read Only Memory) or NVRAM (Non-Volatile RAM). A semiconductor memory can also be a semiconductor circuit that can be part of a circuit with at least one processor. The ASIC can be an integrated circuit configured to perform all or part of the functions shown in FIG. The FPGA may be an integrated circuit configured to perform all or part of the functions shown in FIG. 1 after manufacture.

[Terminal configuration]
With reference to FIG. 2, the configuration of the computer that realizes the terminal 120 and the terminal 130 will be described. FIG. 2 is a block diagram showing a hardware configuration of a general-purpose computer 200 that functions as a terminal 120 or a terminal 130.

The computer 200 has, as main components, a CPU (Central Processing Unit) 1 for executing a program, a mouse 2 and a keyboard 3 for receiving instructions input by a user of the computer 200, and data generated by executing the program by the CPU 1. Alternatively, a RAM 4 that volatilely stores data input via the mouse 2 or keyboard 3, a hard disk 5 that stores data non-volatilely, an optical disk drive 6, a monitor 8, and a communication IF (Interface) 7. To prepare for. Each component is connected to each other by a bus. A CD-ROM9 or other optical disc is mounted on the optical disc drive device 6. The communication IF 7 includes, but is not limited to, a USB (Universal Serial Bus) interface, a wired LAN (Local Area Network), a wireless LAN, a Bluetooth (registered trademark) interface, and the like.

The processing in the computer 200 is realized by each hardware and software executed by the CPU 1. Such software may be stored in the hard disk 5 in advance. Further, the software may be stored in a non-volatile data recording medium that can be read by a computer such as a CD-ROM9 and distributed as a program product. Alternatively, the software may be provided as a downloadable program product by an information provider connected to the Internet or other networks. Such software is read from the data recording medium by the optical disk driving device 6 or other data reading device, or downloaded via the communication IF 7, and then temporarily stored in the hard disk 5. The software is read from the hard disk 5 by the CPU 1 and stored in the RAM 4 in the form of an executable program. The CPU 1 executes the program.

Each component constituting the computer 200 shown in FIG. 2 is a general one. Therefore, it can be said that the essential part of the present embodiment is the program stored in the computer 200. Since the operation of the hardware of the computer 200 is well known, the detailed description will not be repeated.

The data recording medium is not limited to CD-ROM, FD (Flexible Disk), and hard disk, but also magnetic tape, cassette tape, optical disc (MO (Magnetic Optical Disc) / MD (Mini Disc) / DVD (Digital Versatile Disc)). ), IC (Integrated Circuit) card (including memory card), optical card, mask ROM, EPROM (Electronically Programmable Read-Only Memory), EEPROM (Electronically Erasable Programmable Read-Only Memory), flash ROM, SSD (Solid State Drive) ) Or the like, which may be a non-volatile data recording medium that carries a fixed program such as a semiconductor memory.

The program referred to here may include not only a program that can be directly executed by the CPU, but also a source program format program, a compressed program, an encrypted program, and the like.

[Control structure]
The control structure of the system 100 will be described with reference to FIG. FIG. 3 is a flowchart showing a part of the processing performed by the system 100.

In step S310, the system 100 three-dimensionally measures the frame with a frame tracer 110 having a known mechanical mechanism capable of tilting the frame, and calculates the tilt angle of the frame.

In step S320, the frame tracer 110 calculates the tilt angle of the frame, and then tilts the frame by the tilt mechanism equivalent to the tilt angle to bring the frame into a horizontal state with one eye.

In step S330, the frame tracer 110 measures the outer shape of the frame again.

In step S340, the frame tracer 110 raises the stylus along the concave rim of the frame while pressing the cylindrical portion of the stylus against the frame, stops at the position where the stylus is, and then applies a load upward to 360 degrees. The shape is measured by rotating it, and a three-dimensional shape is acquired.

In step S350, the frame tracer 110 acquires the frame shape data a (rθz, xyz) and the step shape data b (rθz, xyz) as a result of the three-dimensional shape measurement. In one aspect, the frame shape data a corresponds to the data obtained by tracing the groove at the base of the rim constituting the frame. The step shape data b corresponds to the data obtained by tracing the end of the rim inside the concave surface (eyeball side) of the frame.

In step S360, the frame tracer 110 replaces the acquired frame shape data a and step shape data b with the conventional frame shape data format. Further, the frame tracer 110 replaces the step shape data b with radius data having the frame center as a reference point for the frame shape data a.

In step S370, the frame tracer 110 converts the frame shape data a into frame shape data conforming to the VCA (Visual Clip Art) format. The frame tracer 110 further converts the frame shape data a into shape data having the reference point of the step shape based on the step shape data b as the frame center.

In step S380, the terminal 120 transfers these two data from the front-end system to the factory server (for example, the terminal 130) when the cut order is transmitted. Upon receiving the order, the terminal 130 uses these data to determine whether or not the difference between the outer shape and the concave rim shape is greater than or equal to a predetermined value. For example, when this difference is 9 mm or more, the factory server (terminal 130) notifies the terminal 120 that the order cannot be received. On the other hand, when the terminal 130 determines that the lens processing based on the data sent from the terminal 120 is possible, the terminal 130 transmits the frame shape data a and the step shape data b and a command to start the lens processing to the lens processing machine 140. do. The lens processing machine 140 processes a lens using these data. The processed lens is sent from the lens maker 102 to the spectacle store 101.

The configuration of the frame tracer 110 will be described with reference to FIG. FIG. 4 is a diagram showing the appearance of the frame tracer 110. The frame tracer 110 includes a tilt mechanism 113 and a main body 410. The tilt mechanism 113 can be rotated by a tilt angle of 420 by a rotation mechanism controlled by a control circuit 112 arranged inside the main body 410.

The frame tracer 110 will be further described with reference to FIG. FIG. 5 is a diagram schematically showing how the frame tracer 110 measures the outer shape of the rim 401 of the frame 400. In one aspect, the stylus 115 is moved to the rim line of the rim 401 in response to the movement of the actuator 114. After that, the stylus 115 rotates and turns while maintaining the contact state with the rim 401, and measures the shapes of the rim 401 for the right eye lens and the rim 402 for the left eye of the frame 400, respectively.

The structure of the stylus 115 will be described with reference to FIG. FIG. 6 is a diagram showing the appearance of the stylus 115 according to one embodiment. The stylus 115 has a protrusion 610. When the inner circumference of the rim has a step due to the rim line, when the protrusion 610 hits the step, the contact state between the rim 401 and the stylus 115 is maintained.

The relationship between the frame and the stylus will be described with reference to FIGS. 7 and 8. FIG. 7 is a diagram showing a state in which the stylus 115 according to one embodiment is in contact with the inner circumference of the rim 401. FIG. 8 is a cross-sectional view showing a state in which the stylus 115 and the rim 401 are in contact with each other according to the embodiment.

As shown in FIG. 7, the protrusion 610 is in contact with the side surface of the groove (rim wire) formed on the inner circumference of the rim 401. The outer peripheral end of the stepped lens is fitted into the groove. The outer diameter of the protrusions 610 is preferably smaller than the groove spacing.

Further, in a certain aspect, it is preferable that the shape of the protrusion 610 is a cylinder on the side surface thereof and a hemispherical shape at the tip (semicircular shape in cross section). If the protrusion 610 is shaped like a flat plate, if the stylus is scanned along the curve of the rim 401, the protrusion 610 may be caught by friction with the rim and the shape of the rim may not be measured properly. be. However, if the side surface of the protrusion 610 is cylindrical and the tip is hemispherical, the inside can be smoothly measured along the curve of the rim 401.

More specifically, as shown in FIG. 8, in one aspect, the stylus 115 is in contact with the end of the groove of the rim 401 at the protrusion 610 and the side surface of the shaft of the stylus 115. A force that pushes the rim 401 by the protrusion 610 acts on the stylus 115 so that this contact state is maintained. In FIG. 8, the point 750 defines the inside of the rim groove which is the outer shape of the lens. Point 751 defines the inner diameter of the rim that is the step processing position.

The outer shape obtained based on the shape data will be described with reference to FIGS. 9 and 10. FIG. 9 is a diagram showing the outer shape of the rim 401 obtained based on the two-dimensional shape data obtained by the frame tracer. Line 910 represents the contour of the concave end of the frame. In one aspect, the contour corresponds to the contact area between the stylus 115 and the rim 401. The wire 920 corresponds to a groove formed inside the rim 401.

FIG. 10 is a diagram showing the outer shape of the rim 401 obtained based on the three-dimensional shape data obtained by the frame tracer. As in the case shown in FIG. 9, the line 1010 represents the contour of the concave end of the frame. In one aspect, the contour corresponds to the contact area between the stylus 115 and the rim 401. The wire 1020 corresponds to a groove formed inside the rim 401.

As described above, according to the present embodiment, it is possible to acquire accurate data on the step shape of the rim of the selected frame. As a result, the frame-insertion accuracy when the lens processed using the data is fitted into the rim of the frame is improved. Further, when processing the lens, the actual product of the selected frame is not always necessary, so that the place where the frame is selected and the place where the lens is processed may be separated from each other. Therefore, for example, at a spectacles store, a potential customer is made to select a frame, shape data is acquired by measuring the outer shape of the selected frame, and the lens is processed and processed using the shape data sent from the spectacles store. It will also be possible to send the finished lenses to eyeglass retailers.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

2 mouse, 3 keyboard, 4 RAM, 5 hard disk, 6 optical disk drive, 7 communication IF 8 monitor, 9 ROM, 100 system, 101 eyeglass dealer, 102 lens maker, 110 frame tracer, 112 control circuit, 113 tilt mechanism, 114 actuator, 115 stylus, 116 amplifier, 117 converter, 118 arithmetic circuit, 120, 130 terminal, 140 lens processing machine, 200 computer, 400 frame, 401, 402 rim, 410 main body, 420 tilt angle, 610 protrusion, 910, 920, 1010, 1020 lines.

Claims (14)

A device for measuring the shape of spectacle frames.
An acquisition means for acquiring the shape data of the outer shape of the frame and the shape data of the rim of the frame, and
A conversion means for converting the shape data of the rim so that the reference point of the shape data of the rim becomes a frame center based on the shape data of the outer shape.
An apparatus including an output means for outputting the shape data of the outer shape and the shape data of the rim after conversion. A device for measuring the shape of spectacle frames.
An acquisition means for acquiring the shape data of the outer shape of the frame and the shape data of the rim of the frame, and
A conversion means for converting the outer shape data so that the reference point of the outer shape data becomes a frame center based on the rim shape data.
An apparatus including an output means for outputting the shape data of the rim and the shape data of the outer shape after conversion. The device according to claim 1 or 2, wherein the output means further outputs a processing order for a lens fitted in the frame. The device according to any one of claims 1 to 3, further comprising a display device for displaying whether or not the lens can be processed based on the shape data of the outer shape and the shape data of the rim after conversion. Acquiring the shape data of the outer shape of the frame is
To calculate the tilt angle of the frame by three-dimensional measurement,
To make the frame horizontal by tilting the frame only by the tilt angle,
The apparatus according to any one of claims 1 to 4, comprising measuring the outer shape of the horizontally leveled frame. The device according to any one of claims 1 to 5, wherein the acquisition means includes a stylus. The device according to claim 6, wherein the stylus includes either a stylus having a hemispherical tip thereof or a stylus having a cross section thereof being a part of a circle. Acquiring the shape data of the rim is
Raising the stylus along the concave rim of the frame while pressing the cylindrical portion of the stylus against the frame.
The device according to claim 6 or 7, wherein after the stylus has stopped ascending, the stylus is swiveled 360 degrees while maintaining a contact state between the stylus and the rim. The apparatus according to any one of claims 1 to 8, and the apparatus according to any one of claims 1 to 8.
A system for providing a lens, comprising a device for outputting shape data of the outer shape of the frame and shape data of the rim output from the device. The apparatus according to any one of claims 1 to 8, and the apparatus according to any one of claims 1 to 8.
A system for providing a lens, comprising a 3D printer for manufacturing a lens based on the shape data of the outer shape of the frame and the shape data of the rim. It is a method for measuring the shape of spectacle frames.
The step to acquire the shape data of the outer shape of the frame and
The step of acquiring the shape data of the rim of the frame and
A step of converting the shape data of the rim so that the reference point of the shape data of the rim becomes a frame center based on the shape data of the outer shape.
A method comprising a step of outputting the shape data of the outer shape and the shape data of the rim after conversion. It is a method for measuring the shape of spectacle frames.
The step to acquire the shape data of the outer shape of the frame and
The step of acquiring the shape data of the rim of the frame and
A step of converting the outer shape data so that the reference point of the outer shape data becomes a frame center based on the rim shape data.
A method comprising a step of outputting the shape data of the rim and the shape data of the outer shape after conversion. A program for controlling a device for measuring the shape of a spectacle frame, wherein the program is applied to the device.
The step to acquire the shape data of the outer shape of the frame in the horizontal state,
The step of acquiring the shape data of the rim on the concave surface side of the frame and
A step of converting the shape data of the rim so that the reference point of the shape data of the rim becomes a frame center based on the shape data of the outer shape.
A program for executing a step of outputting the shape data of the outer shape and the shape data of the rim after conversion. A program for controlling a device for measuring the shape of a spectacle frame, wherein the program is applied to the device.
The step to acquire the shape data of the outer shape of the frame and
The step of acquiring the shape data of the rim of the frame and
A step of converting the outer shape data so that the reference point of the outer shape data becomes a frame center based on the rim shape data.
A program for executing a step of outputting the shape data of the rim and the shape data of the outer shape after conversion.

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