JP2020125938A - Eyeglass lens peripheral edge processing information acquisition device and eyeglass lens peripheral edge processing information acquisition program - Google Patents

Abstract

To provide an eyeglass lens peripheral edge processing information acquisition device with which can improve the fit-in state of an eyeglass lens into an eyeglass frame.SOLUTION: Provided is an eyeglass lens peripheral edge processing information acquisition device 1 for acquiring a globe shape or circumferential length for processing an eyeglass lens to be fitted into an eyeglass frame F, comprising: first information acquisition means for acquiring a first globe shape or a first rim shape of a rim of the eyeglass frame; second information acquisition means for acquiring an outer shape that is the shape of a demonstration lens DL or mold plate MP of the eyeglass frame; and processing means for applying at least a part of the outer shape to at least a part of the first globe shape and thereby acquiring a second globe shape different from the first globe shape, or applying at least a part of the outer shape to at least a part of the first rim shape and thereby acquiring a second rim shape different from the first rim shape, as well as acquiring the circumferential length of the whole of the rim the first rim shape of which is corrected on the basis of the second rim shape.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to an eyeglass lens peripheral edge processing information acquisition device and an eyeglass lens peripheral edge processing information acquisition program that acquire a target lens shape or a perimeter for processing an eyeglass lens.

There is known a spectacle frame shape measuring device capable of measuring the shape of a rim by bringing a probe into contact with the rim of the spectacle frame (for example, refer to Patent Document 1). Further, an eyeglass frame capable of measuring the shape of the demolens (or template) by bringing the probe axis attached to the probe into contact with the demolens (or template) that has been framed in the eyeglass frame A shape measuring device is known (for example, refer to Patent Document 2).

JP, 2014-021069, A JP, 2011-122898, A

By the way, in recent years, spectacle frames of various shapes having design have been provided. As an example, in a full-rim frame in which the rim of the spectacle frame covers the spectacle lens, a frame having a gap in the rim (that is, a frame in which the rim is partially missing) and a frame in which a part of the spectacle lens does not fit in the rim ( That is, a frame in which a part of the spectacle lens does not contact the rim), and the like.

For such spectacle frames, measure the demolens (or template) from the fact that the probe falls off the rim, the shape of the rim is different from the shape of the demolens (or template), and so on. The processing of the spectacle lens based on is performed. However, in this case, a spectacle lens suitable for the spectacle frame cannot be obtained, and the spectacle lens may not be properly framed.

In view of the above-mentioned conventional technique, the present disclosure has a technical problem to provide an eyeglass lens peripheral edge processing information acquisition device capable of improving a framed state of an eyeglass lens in an eyeglass frame.

In order to solve the above-mentioned subject, the present invention is characterized by having the following configurations.
(1) An eyeglass lens edge processing information acquisition apparatus according to a first aspect of the present disclosure is an eyeglass lens edge processing information acquisition apparatus that acquires a lens shape or a perimeter for processing an eyeglass lens to be framed in an eyeglass frame. Then, the first rim shape of the rim of the spectacle frame, or the first information acquisition means for acquiring the first rim shape of the rim, and the outer shape that is the shape of the demo lens or template of the spectacle frame are acquired. By applying at least a part of the outer shape to at least a part of the first target lens shape and a second information acquiring unit that performs, a second target lens shape different from the first target lens shape is acquired. Alternatively, by applying at least a part of the outer shape to at least a part of the first rim shape, a second rim shape different from the first rim shape is acquired, and based on the second rim shape. Processing means for acquiring the entire circumference of the rim in which the first rim shape is corrected.
(2) A spectacle lens peripheral edge processing information acquisition program according to a second aspect of the present disclosure relates to an eyeglass lens peripheral edge processing information acquisition apparatus that acquires a target lens shape or a perimeter for processing an eyeglass lens to be framed in a spectacle frame. A spectacle lens rim processing information acquisition program used as a spectacle lens rim processing information acquisition device, and by being executed by a processor of the spectacle lens rim processing information acquisition device, A first information obtaining step of obtaining a shape; a second information obtaining step of obtaining an outer shape which is the shape of a demo lens or a template of the spectacle frame; and a step of obtaining the outer shape of at least a part of the first lens shape. Obtaining a second lens shape different from the first lens shape by applying at least a part, or applying at least a part of the outer shape to at least a part of the first rim shape. And a processing step of acquiring a second rim shape different from the first rim shape and acquiring the entire circumference of the rim in which the first rim shape is corrected based on the second rim shape. , Is executed by the spectacle lens peripheral edge processing information acquisition device.

1 is a schematic external view of an eyeglass lens peripheral edge processing information acquisition device. It is a top view of a frame holding unit. It is a perspective view of a frame holding unit. It is a schematic block diagram of a clamp mechanism. It is a figure which shows the clamp mechanism arrange|positioned at the left side of a 1st slider. It is a figure which shows the control system of a spectacle lens periphery processing information acquisition apparatus. It is a flow chart which shows control operation. It is an example of a frame. It is an example of the first target lens shape information of the rim in the frame. It is an example of the outer shape of a demo lens. It is a figure which shows the relationship between the 1st lens shape of a rim, and the external shape of a demo lens.

<Outline>
An outline of an eyeglass lens peripheral edge processing information acquisition device (hereinafter, abbreviated as an acquisition device) according to an embodiment of the present disclosure will be described. Items classified by <> below can be used independently or in association with each other.

<Shape of rim of eyeglass frame>
The spectacle frame (hereinafter, frame) exemplified in the present embodiment may be a frame that holds a spectacle lens (hereinafter, lens) at its rim. For example, when the lens is placed in the frame, more than half of the rim of the frame may be in contact with the lens. As an example, it may be a full-rim frame in which the rim of the frame covers the lens. In this case, a frame with a gap in the rim of the frame (that is, a frame in which the rim is partially missing), a frame in which a part of the lens does not fit in the rim of the frame (that is, a part of the lens does not contact the rim) Frame), and the like.

Conventionally, it has been difficult to obtain rim information for such a frame in which the lens is held by the rim of the frame. For example, in a frame with a gap in the rim, it is not possible to obtain information about the gap because the probe comes off from the gap in the rim. Further, for example, in a frame in which a part of the lens does not fit on the rim, the shape of the rim and the shape of the lens do not match, and thus different information is obtained. For this reason, the lens is processed by obtaining information on the demo lens or the template which is framed. However, when the lens is pressed against the rim, the lens may be distorted or held unstable, and it may not be possible to obtain a processed lens suitable for the frame.

In the present embodiment, by applying the technology disclosed below to these spectacle frames, it is possible to improve the framed state of the spectacle lens in the spectacle frame. At least a part of the technique disclosed in the present embodiment is not limited to being applied to these spectacle frames. For example, it may be applied when information cannot be obtained successfully from a part of the rim of the spectacle frame. As an example, the present invention may be applied to the case where the probe falls off even if there is no gap in the rim of the spectacle frame.

<First information acquisition means and second information acquisition means>
In the present embodiment, the acquisition device includes a first information acquisition unit (for example, the control unit 50). The first information acquisition unit acquires the rim shape (first rim shape) of the rim of the frame or the rim shape (first rim shape).

The first rim shape of the rim may be rim three-dimensional rim shape data or rim two-dimensional rim shape data. The first rim shape of the rim may be three-dimensional shape data of the rim or may be two-dimensional shape data of the rim. For example, the first lens shape and the first rim shape may be shapes based on the inner shape of the rim. As an example, the shape may be a circumferential shape of a concave portion (for example, a groove) formed in the rim, and a concave portion into which a convex portion (for example, a bevel) formed in the lens is fitted. Further, as an example, the convex portion formed on the rim may be shaped in the circumferential direction of the convex portion fitted into the concave portion formed on the lens.

The first information acquisition means may acquire the first target lens shape or the first rim shape at a plurality of radial angles of the frame. Of course, the first information acquisition means may acquire the first target lens shape or the first rim shape at one radial angle of the frame. In addition, in the present embodiment, a part of the first lens shape or the first rim shape acquired by the first information acquisition means may be missing. That is, the first lens shape or the first rim shape acquired by the first information acquisition means may be in a state in which a part of the shape is unknown.

In the present embodiment, the acquisition device includes a second information acquisition unit (for example, control unit 50). The second information acquisition means acquires the outer shape which is the shape of the demo lens of the frame or the template. For example, the outer shape of the demo lens or template may be three-dimensional shape data of the demo lens or template, or may be two-dimensional shape data of the demo lens or template. For example, the outer shape of the demo lens or template may be a shape based on the outer shape of the demo lens or template. As an example, a convex portion (for example, a bevel) formed on the demo lens or the template and a convex portion that is fitted into a concave portion (for example, a groove) formed on the lens may have a circumferential shape. Further, as an example, the shape may be a circumferential shape of a concave portion formed in the demo lens or the template and fitted into the convex portion formed in the lens.

The second information acquisition means may acquire the outer shape of the demo lens or template at a plurality of radial angles of the spectacle frame. Of course, the second information acquisition means may acquire the outer shape of the demo lens or template at one radial angle of the spectacle frame.

In the present embodiment, the first information acquisition unit may acquire the first target lens shape and the first rim shape from the accumulated data. Further, in the present embodiment, the second information acquisition means may acquire the outer shape from the accumulated data. That is, in the present embodiment, at least one of the first lens shape, the first rim shape, and the outer shape may be acquired from the accumulated data. For example, in such a case, the first lens shape, the first rim shape, and the outer shape are measured in advance and stored in a server or a memory, and the first information acquisition means or the second information acquisition means By calling and setting the corresponding data, the first target lens shape, the first rim shape, and the outer shape can be acquired.

Further, in the present embodiment, the first information acquisition unit may measure the first target lens shape and the first rim shape using the first measurement unit (for example, the measurement unit 200). In addition, in the present embodiment, the second information acquisition unit may measure the outer shape using the second measurement unit (for example, the measurement unit 200). The first measuring means and the second measuring means may be combined, or each may be provided separately.

For example, when the acquisition device includes at least one of the first measuring unit and the second measuring unit, these measuring units are configured to measure the first lens shape, the first rim shape, and the outer shape by a contact method. You may have it. Further, these measuring means may have a configuration for measuring the first lens shape, the first rim shape, and the outer shape in a non-contact type. Of course, these measuring means may be configured to measure any one of the first lens shape, the first rim shape, and the outer shape by the contact type and any one of them by the non-contact type.

As an example of the configuration for measuring the first lens shape, the first rim shape, and the outer shape by a contact method, a configuration in which a probe (for example, probe 281) is brought into contact with the rim, a measurement is performed on the periphery of the demo lens or template. A configuration in which a child shaft (for example, a tracing stylus shaft 282) is brought into contact with each other can be used. In this case, the first lens shape, the first rim shape, and the outer shape can be measured by detecting the movement of the tracing stylus and the tracing stylus shaft.

As an example of a configuration for measuring the first lens shape, the first rim shape, and the outer shape in a non-contact manner, a projection optical system for irradiating a measurement light beam and a light reception for receiving a reflected light beam in which the measurement light beam is reflected And a configuration including an optical system. The projection optical system may irradiate the measurement light flux on at least one of the rim, the peripheral edge of the demo lens, the peripheral edge of the template, and the like. Further, the light receiving optical system may receive a reflected light beam in which the measurement light beam is reflected by at least one of the rim, the peripheral edge of the demo lens, the peripheral edge of the template, and the like. In this case, the first lens shape, the first rim shape, and the outer shape can be measured by analyzing the reflected light flux.

<Processing means>
In the present embodiment, the acquisition device includes a processing unit (for example, the control unit 50). The processing means obtains a second lens shape different from the first lens shape by applying at least a part of the outer shape of the demo lens or the template to at least a part of the first lens shape of the rim. .. For example, in the present embodiment, the second target lens shape may be a target lens shape for processing a lens to be framed. The processing means may apply the outer shape to all of the first target lens shapes, or may partially apply the outer shape to all of the first target lens shapes. Further, the processing means may apply a shape based on all of the outer shape to a part of the first lens shape, or a part of the outer shape to a part of the first lens shape. You may apply.

Further, the processing means applies at least a part of the outer shape of the demo lens or the template to at least a part of the first rim shape of the rim to obtain a second rim shape different from the first rim shape. , The entire circumference of the rim in which the first rim shape is corrected is acquired based on the second rim shape. For example, in this embodiment, the entire circumference of the rim may be the circumference for processing the lens to be framed in the frame. The processing means may apply the outer shape to all of the first rim shapes, or may partially apply the outer shape to all of the first rim shapes. Further, the processing means may apply a shape based on all of the outer shape to a part of the first rim shape, or apply a part of the outer shape to a part of the first rim shape. May be.

For example, in the past, when information could not be obtained from the frame rim, information was obtained from the demo lens (or template) and the lens shape and circumference for processing the lens were used. The framed state of the processed lens was sometimes unfavorable. However, by performing the control of this embodiment, the operator can acquire the lens shape and the perimeter of the lens in consideration of the information of the rim even when the information cannot be obtained from the rim. .. By creating processing control data using the target lens shape and peripheral length and processing the peripheral edge of the lens, it is possible to improve the fitting of the lens in the frame to a more suitable state than before.

The processing means specifies a predetermined area from the first target lens shape acquired by the first information acquisition means, specifies a corresponding area corresponding to the predetermined area from the outer shape acquired by the second information acquisition means, and determines the predetermined area. Apply at least a portion of the corresponding region to at least a portion of the region. Further, the processing means specifies a predetermined area from the first rim shape acquired by the first information acquisition means, specifies a corresponding area corresponding to the predetermined area from the outer shape acquired by the second information acquisition means, and determines the predetermined area. Apply at least a portion of the corresponding region to at least a portion of the region.

For example, the predetermined area may be specified by reading the first rim shape or the first rim shape of the rim accumulated in the server or the memory. Further, for example, it may be specified by an operation signal input from an operation means (for example, the monitor 3, the switch unit 4) by the operator. Further, for example, it may be specified based on the measurement result measured by the above-mentioned first measuring means. In this case, the range of the radial angle at which the probe is dropped may be specified as the predetermined area. In addition, for example, it may be specified by analyzing a captured image of a frame by image processing (for example, edge detection). In this case, the acquisition device may include a photographing unit for photographing the frame, and the processing unit may analyze the photographed image photographed by the photographing unit. Further, in this case, the processing unit may be configured to receive a captured image captured by another device and analyze the captured image.

For example, the corresponding region may be specified by reading the outer shape of the demo lens or template stored in the server or the memory. Further, for example, it may be specified by the operator inputting an operation signal from the operation means. In addition, for example, it may be specified by analyzing a captured image obtained by capturing a frame with a demo lens in the frame by image processing. Further, for example, it may be specified as the range of the radius vector angle that is the same (substantially the same) as the predetermined area of the first rim shape of the rim or the first rim shape.

In this way, by specifying the predetermined area of the rim and the corresponding area of the demo lens or the template, the corresponding area of the demo lens or the template can be smoothly applied to the predetermined area of the rim. Further, by specifying the predetermined area of the rim and the corresponding area of the demo lens or the template respectively, the corresponding area of the demo lens or the template is accurately applied to the predetermined area of the rim, and a more accurate lens is obtained. The target lens shape and circumference can be obtained.

The processing means determines the presence or absence of a predetermined area in the first target lens shape or the first rim shape acquired by the first information acquisition means, and based on the determination result, at least a part of the corresponding area to at least a part of the predetermined area. You may perform the application process which applies a part. For example, in this case, whether there is a predetermined area in the first lens shape or the first rim shape is determined by reading the rim information accumulated in the server or the memory, inputting an operation signal by the operator, and the first measurement. It may be determined from the measurement result by the means, the analysis of the frame-captured image, or the like.

For example, when the rim of the frame does not have a predetermined area (for example, when the rim does not have a defect area described later), the lens shape and the perimeter of the lens may be acquired from the rim information. The application process of applying the information of the demo lens or the template to the information of 1 may not be executed. By determining the presence or absence of a predetermined region of the rim as in the present embodiment, appropriate processing is executed as necessary, and it is possible to obtain the optimum lens shape and circumference of the lens that match the frame.

In addition, in the present embodiment, it is not always necessary to determine the presence or absence of the predetermined area of the first lens shape or the first rim shape as described above. An application process of applying at least a part of the corresponding area to at least a part may be executed. That is, the application process may be executed by setting a predetermined area.

For example, the predetermined area in the first lens shape or the first rim shape may be a defective area in which a part of the first lens shape or the first rim shape is missing. For example, the defective region may be a region in which a part of the rim is defective due to a gap in the rim. Further, for example, it may be an area where the information of the rim cannot be obtained because the probe is removed from the rim. As a result, incomplete rim information obtained from frames with gaps in the rim (frames where the rim is partially missing), frames in which the contact point comes off due to rim groove depth, warpage, etc. Even in this case, it is possible to obtain the lens shape and the perimeter of the lens in consideration of the rim information by using the information of the demo lens or the template. In the present embodiment, a region in which a part of the lens does not come into contact with the rim due to a part of the lens not fitting in the rim is a defective region in which a part of the first rim shape or the first rim shape is missing. May be

When applying the outer shape to the first rim shape or the first rim shape of the rim, the processing means may perform a replacement process of replacing the first rim shape or the first rim shape with the outer shape. For example, the range of the radial angle in the first lens shape or the first rim shape may be replaced with the range of the same radial angle in the outer shape. As an example, the predetermined area may be replaced with the corresponding area. Further, as an example, a region including a predetermined region (a range of radial angles including the front and rear of a predetermined region, etc.) is defined as a region including a corresponding region (a range of radial angles including the front and rear of the corresponding region, etc.) May be replaced with. Note that, for example, the range of the radial angle in the first lens shape or the first rim shape may be replaced with the range of the different radial angles in the outer shape. That is, the range of the radial angle of the predetermined region and the range of the radial angle of the corresponding region do not necessarily have to match.

When applying the outer shape to the first rim shape of the rim or the first rim shape, the processing means may perform a complementary process of complementing the first rim shape or the first rim shape based on the outer shape. For example, the range of the radial angle in the first target lens shape or the first rim shape may be complemented based on the range of the same radial angle in the outer shape. As an example, a predetermined area may be complemented with a corresponding area. Further, as an example, a region including a predetermined region (a range of radial angles including the front and rear of a predetermined region, etc.) is defined as a region including a corresponding region (a range of radial angles including the front and rear of the corresponding region, etc.) May be supplemented with. For example, the predetermined area may be complemented by calculating the shape of the predetermined area based on the shape of the corresponding area. Note that, for example, the range of the radial angle in the first lens shape or the first rim shape may be complemented based on the range of the different radial angles in the outer shape.

The processing means may perform a combination of the replacement process and the complementing process as an application process for applying at least a part of the corresponding region of the demo lens or the template to at least a part of the predetermined region of the rim. As an example, by replacing a part of the predetermined area with the outer shape and complementing the remaining area of the predetermined area based on the outer shape, at least a part of the corresponding area corresponds to at least a part of the predetermined area. You may apply.

<Processing control data acquisition means>
In the present embodiment, the acquisition device includes processing control data acquisition means (for example, control unit 50). The processing control data acquisition means acquires processing control data for processing the lens based on the second lens shape and the entire circumference of the rim acquired by the processing means. In addition to the second lens shape and the entire circumference of the rim, the processing control data acquisition unit includes at least lens layout data, lens processing conditions, lens lens shape data, frame shape data, and the like. The processing control data may be acquired by using either one. As a result, the operator can obtain more accurate processing control data than before, and by using this processing control data for processing the lens, the framing state of the spectacle lens with respect to the spectacle frame is improved. It

The processing control data acquisition unit may be acquired by calculating the processing control data by the control unit of the acquisition device. Further, the processing control data acquisition unit may acquire the processing control data by receiving the processing control data calculated by the control unit of another device.

Further, the processing control data acquisition means may directly acquire the processing control data of the lens based on the second lens shape and the entire circumference of the rim. Further, for example, the processing control data acquisition means acquires the lens shape and the peripheral length of the lens based on the second peripheral shape and the entire peripheral length of the rim, and acquires the processing control data based on the target lens shape and the peripheral length. You may get it.

Note that the present disclosure is not limited to the device described in this embodiment. For example, terminal control software (program) that performs the functions of the following embodiments is supplied to a system or device via a network or various storage media, and a control device (eg, CPU) of the system or device reads the program. It is also possible to execute.

<Example>
An example, which is one of the typical embodiments, will be described below.

FIG. 1 is a schematic external view of the acquisition device 1. In the present embodiment, the horizontal direction (horizontal direction) of the acquisition device 1 is represented as the X direction, the vertical direction (vertical direction) is represented as the Y direction, and the front-back direction is represented as the Z direction. For example, the acquisition device 1 includes an opening window 2, a monitor 3, a switch unit 4, an attachment unit 10, a frame holding unit 100, a measurement unit 200, and the like.

For example, the monitor 3 is a touch panel. That is, the monitor 3 functions as an operation unit (controller). In this embodiment, the monitor 3 can be used to input the defective area of the frame F, layout data of the lens to be framed in the frame F, processing conditions, and the like. A signal corresponding to the operation instruction input from the monitor 3 is output to the control unit 50 described later. The monitor 3 does not have to be a touch panel type, and the monitor 3 and the operation unit may be separately provided. In this case, at least one of a mouse, a joystick, a keyboard, a mobile terminal, etc. can be used as the operation unit.

For example, the monitor 3 may be a monitor mounted on the acquisition device 1. Further, for example, the monitor 3 may be a monitor connected to the acquisition device 1. In this case, a monitor of a personal computer may be used. The monitor 3 may be configured to use a plurality of monitors together.

The switch unit 4 is used when inputting a signal for causing the acquisition apparatus 1 to execute various processes. For example, various types of processing include switching of measurement modes, start of measurement, and the like. In this embodiment, the switch unit 4 is provided on the main body cover of the acquisition device 1. Of course, the switch unit 4 may be electronically displayed on the screen of the monitor 3. In this case, the screen of the monitor 3 can be touched to operate the switch unit 4.

The demo lens DL removed from the frame F or the holder 15 used when measuring the template MP is attached to the attachment portion 10. For details of the holder 15, refer to, for example, Japanese Patent Laid-Open No. 2013-068439.

<Frame holding unit>
2 and 3 are diagrams illustrating the frame holding unit 100. FIG. 2 is a top view of the frame holding unit 100. The frame holding unit 100 in FIG. 2 is in a state of holding the frame. FIG. 3 is a perspective view of the frame holding unit 100. The frame holding unit 100 of FIG. 3 is in a state in which the holder 15 is attached to the mounting portion 10.

The frame holding unit 100 is arranged inside the opening window 2. The frame holding unit 100 holds the frame F in a desired state. For example, the frame holding unit 100 includes a holding portion base 101, a first slider 102, a second slider 103, an opening/closing moving mechanism 110, a clamp mechanism 150, and the like.

The first slider 102 and the second slider 103 are placed on the holder base 101. The first slider 102 has a first surface 105 that comes into contact with the upper sides of the right rim FRR and the left rim FRL of the frame F. The second slider 103 has a second surface 106 that comes into contact with the lower sides of the right rim FRR and the left rim FRL of the frame F. The first surface 105 and the second surface 106 face each other. The first surface 105 and the second surface 106 are moved by the opening/closing movement mechanism 110 in a direction in which the distance between the first surface 105 and the second surface 106 is opened/closed (a direction in which the distance increases and a direction in which the distance decreases). Further, the clamp pins included in the clamp mechanism 150 are arranged on the first surface 105 and the second surface 106 so as to project.

The clamp pin clamps (holds) the left and right rims from the thickness direction of the rim (front side and rear side when wearing spectacles). The first slider 102 is provided with a pair of clamp pins 230a and 230b as clamp pins. The clamp pin 230a and the clamp pin 230b are arranged at two places, and clamp the upper side of the right rim FRR and the left rim FRL. The second slider 103 is provided with a pair of clamp pins 230c and 230d as clamp pins. The clamp pin 230c and the clamp pin 230d are arranged at two positions, and clamp the lower side of the right rim FRR and the left rim FRL.

The open/close moving mechanism 110 includes two guide rails 111, a pulley 112, a pulley 113, a wire 114, a spring 115, and the like. The guide rails 111 are arranged on the left and right of the holding unit base 101 and extend in the Y direction. The wire 114 is stretched around the pulley 112 and the pulley 113. The right end portion 102R of the first slider 102 is attached to the left side of the wire 114. The right end portion 103R of the second slider 103 is attached to the right side of the wire 114. The spring 115 constantly biases the first slider 102 and the second slider 103 in a direction to close the gap between them. By having such a configuration, the opening/closing movement mechanism 110 moves the first slider 102 and the second slider 103 around the center line N1 in the X direction in a direction in which the distance between the first slider 102 and the second slider 103 increases and in a direction in which the distance therebetween decreases. When the first slider 102 moves, the second slider 103 also moves together.

FIG. 4 is a schematic configuration diagram of the clamp mechanism 150. Note that FIG. 5 shows the clamp mechanism 150 arranged on the left side of the first slider 102. The clamp mechanism includes a base plate 151, a clamp pin 230a, a clamp pin 230b, a first arm 152, a second arm 153, a compression spring 157, a spring 156, a gear 158, a gear 159, a wire 160, a pulley 161, a drive unit 170, and the like. Equipped with.

The base plate 151 is arranged inside the first slider 102. The first arm 152 is rotatably held by the rotation shaft 175 with respect to the base plate 151. The first arm 152 is formed with a gear 158 centered on the rotation shaft 175. The second arm 153 is rotatably held by the rotation shaft 176 with respect to the base plate 151. The second arm 153 is formed with a gear 159 centered on the rotation shaft 176. The gear 158 and the gear 159 mesh with each other. A clamp pin 230a is attached to the tip of the first arm 152. A clamp pin 230b is attached to the tip of the second arm 153. The compression spring 157 is provided between the first arm 152 and the second arm 153. The compression spring 157 constantly urges the gap between the clamp pin 230a and the clamp pin 230b in the opening direction. One end of a spring 156 is attached to the rear end of the first arm 152. The wire 160 is fixed to the other end of the spring 156. The wire 160 is connected to the drive unit 170 via a pulley 161 rotatably attached to the base plate 151.

For example, the drive unit 170 has a shaft 171, a motor 172, and the like. The shaft 171 winds the wire 160. The motor 172 rotates the shaft 171. For example, when the motor 172 is driven and the wire 160 is wound, the first arm 152 rotates counterclockwise about the rotation shaft 175. At this time, since the gear 158 and the gear 159 are meshed with each other, the second arm 153 rotates clockwise about the rotation shaft 176. As a result, the clamp pin 230a and the clamp pin 230b are interlocked and closed, and the upper side of the left rim FRL is clamped.

The clamp mechanism for clamping the upper side of the right rim FRR (that is, the clamp mechanism arranged on the right side of the first slider 102) may have a configuration in which the clamp mechanism 150 shown in FIG. Good. The clamp mechanism for clamping the lower side of the right rim FRR and the left rim FRL (that is, the clamp mechanism arranged on each of the left side and the right side of the second slider 103) is a clamp arranged on the first slider 102. The mechanism 150 may be vertically inverted.

Further, the motor 172 and the shaft 171 may be arranged in the clamp mechanisms 150 provided at four positions, respectively, but may be commonly used in the clamp mechanisms 150 at four positions. In this embodiment, in any case, the four clamp pins are configured to open and close at the same time.

<Measurement unit>
The measurement unit 200 is arranged below the frame holding unit 100. The measuring unit 200 measures the rim shape (first rim shape) or the rim shape (first rim shape) of the rim in the frame F. In the present embodiment, the measuring unit 200 inserts a tracing stylus 281 into the groove of the rim of the frame F, and detects the movement of the tracing stylus 281 to detect the first rim shape of the groove of the rim and the first rim. Measure the shape. Further, the measurement unit 200 measures the shape (outer shape) of the peripheral edge of the demo lens DL or the template MP. In the present embodiment, the measuring unit 200 brings a tracing stylus shaft 282, which will be described later, into contact with the peripheral edge of the demo lens DL or the template MP, and detects movement of the tracing stylus shaft 282 to detect the peripheral edge of the demo lens DL or the template MP. Measure the external shape. That is, the measurement unit 200 also serves as a measurement unit for measuring the first rim shape and the first rim shape of the rim and a measurement unit for measuring the outer shape of the demo lens DL or the template MP.

FIG. 5 is a diagram illustrating the measurement unit 200. FIG. 5A is a schematic configuration diagram of the mobile unit 210. FIG. 5B is a schematic configuration diagram of the tracing stylus holding unit 250. For example, the measurement unit 200 includes a base portion 211, a moving unit 210, a tracing stylus holding unit 250, and the like. The base portion 211 is a rectangular frame extending in the X direction and the Y direction, and is arranged below the frame holding unit 100. The moving unit 210 moves the tracing stylus holding unit 250 relative to the frame F, the demo lens DL, or the template MP. The tracing stylus holding unit 250 holds the tracing stylus shaft 282 and the tracing stylus 281 attached to the tracing stylus shaft 282.

The moving unit 210 moves the tracing stylus holding unit 250 in the X direction, the Y direction, and the Z direction. For example, the moving unit 210 has a Y moving unit 230, an X moving unit 240, a Z moving unit 220, a motor 235, a motor 225, a motor 245, and the like. The Y moving unit 230 moves the tracing stylus holding unit 250 in the Y direction. The Y moving unit 230 drives the motor 235 to move the tracing stylus holding unit 250 in the Y direction along a guide rail (not shown) extending in the Y direction. The X moving unit 240 moves the Y moving unit 230 in the X direction. The X moving unit 240 drives the motor 245 to move the Y moving unit 230 in the X direction along the guide rail 241 extending in the X direction. The Z moving unit 220 moves the tracing stylus holding unit 250 in the Z direction. The Z moving unit 220 is attached to the Y moving unit 230, and drives the motor 225 to move the tracing stylus holding unit 250 in the Z direction along the guide rail 221 extending in the Z direction.

The tracing stylus holding unit 250 has a rotating unit 260 that rotates the tracing stylus shaft 282 around the rotation axis P1 extending in the Z direction. The rotation unit 260 includes a rotation base 251 to which the tracing stylus shaft 282 is attached, and a motor 265 that rotates the rotation base 251 about the rotation axis P1. The rotation base 251 holds the tracing stylus shaft 282 so as to be movable (tiltable) in the tip direction of the tracing stylus 281. Further, the rotation base 251 holds the tracing stylus shaft 282 movably in the Z direction. The position in the tip direction of the tracing stylus 281 and the center position of the tracing stylus shaft 282 are detected by an encoder 286 which is a detector. The position of the tracing stylus 281 in the Z direction and the position of the tracing stylus shaft 282 in the Z direction are detected by an encoder 288 which is a detector. The tracing stylus holding unit 250 includes a measurement pressure applying mechanism (not shown) for applying a measurement pressure for pressing the tip of the tracing stylus 281 against the groove of the rim (right rim FRR and left rim FRL).

<Control part>
FIG. 6 is a diagram showing a control system of the acquisition device 1 according to the present embodiment. For example, the control unit 50 includes a monitor 3, a switch unit 4, a non-volatile memory 55 (hereinafter, memory 55), encoders (encoders 286 and 288), and motors (motors 172, 225, 235, 245, and 265). ), etc. are electrically connected. The memory 55 may be a non-transitory storage medium that can retain stored contents even when power supply is cut off. For example, a hard disk drive, a flash ROM, a removable USB memory, or the like can be used as the memory 55. The memory 55 stores the first information of the rim in the frame F measured by the measurement unit 200, the second information of the demo lens DL (or the template MP) measured by the measurement unit 200, the processing control data acquired by the control unit 50, and the like. May be stored.

For example, the control unit 50 is realized by a general CPU (processor), RAM, ROM, and the like. For example, the CPU controls the driving of each unit in the acquisition device 1. For example, the RAM temporarily stores various types of information. For example, the ROM stores various programs executed by the CPU. The controller 50 may be composed of a plurality of controllers (that is, a plurality of processors).

<Control operation>
FIG. 7 is a flowchart showing the control operation of the acquisition device 1. Hereinafter, a control operation in which the acquisition device 1 acquires a target lens shape and a perimeter for processing a lens to be framed in the frame F, and uses these to create processing control data will be described with reference to a flowchart.

FIG. 8 is an example of the frame F. FIG. 8A is an external view of the frame F. FIG. 8B is a schematic diagram of a state in which the frame F is being measured. In the present embodiment, the case where the acquisition device 1 acquires the target lens shape and the perimeter for processing the lens to be framed in the frame F shown in FIG. 8 will be described as an example. For example, a groove is formed in the rim of the frame F, a bevel is formed in the demo lens DL, and the bevel of the demo lens is fitted in the groove of the rim, so that the frame F is framed with the lens. However, the frame F has a gap G on the rim, and the demo lens DL does not contact the gap G on the rim. When measuring such a frame F, the tracing stylus 281 falls off in the gap G of the rim.

<Acquisition of frame data and lens data (S1)>
First, the operator operates the monitor 3 to input in advance frame shape data of the frame F, lens shape data of a lens to be framed in the frame F, lens processing conditions, lens layout data, and the like. For example, as the frame shape data, a distance between frame centers, a curve value of the frame, a warp angle of the frame, and the like may be input. Further, for example, as the lens shape data, position information of the positions on the front refraction surface and the back refraction surface of the lens corresponding to the demo lens DL, the thickness of the edge surface at the position corresponding to the demo lens DL, and the curve information on the front refraction surface of the lens. , Etc. may be input. Further, for example, as the lens processing conditions, the type of the lens, the material of the lens, the presence or absence of various types of processing, and the like may be input. Further, for example, in the present embodiment, the positional relationship between the external shape S2 of the demo lens DL, which will be described later, and the optical center of the lens may be input as the layout data. The control unit 50 stores these data in the memory 55.

<Acquisition of first lens shape (S2)>
The operator acquires the first rim shape of the rim from the frame F. In the present embodiment, the first rim shape of the rim is acquired by measuring the rim of the frame F using the measurement unit 200 included in the acquisition device 1. It is also possible to acquire the first rim shape of the rim by receiving data measured by a device different from the acquisition device 1 without using the measurement unit 200 of the acquisition device 1.

The operator operates the switch unit 4 to set the measurement mode to the frame trace mode for acquiring the first lens shape of the rim. The operator causes the frame holding unit 100 to hold the frame F by widening the distance between the first slider 102 and the second slider 103 and clamping the upper and lower sides of the rim with the clamp pins. By detecting a state in which the distance between the first slider 102 and the second slider 103 is narrower than in a state in which the movement of the first slider 102 is restricted (a state in which the holder 15 is attached to the attachment portion 10) described later, The measurement mode may be automatically set to the frame trace mode.

Then, the operator operates the switch unit 4 to start measuring the first rim shape of the rim. When the measurement start signal is input, the control unit 50 controls the driving of the measurement unit 200 and measures the first target lens shape of the right rim FRR. The controller 50 moves the tracing stylus 281 from the initial position to the measurement start position, and inserts the tip of the tracing stylus 281 into the groove of the right rim FRR. For example, in this embodiment, the initial position of the tracing stylus 281 in the XY directions is set to the position SR (see FIG. 2) on the right rim FRR side. The position SR may be such that the position in the X direction is the center position of the clamp pins 230a and 230b and the position in the Y direction is the position of the center line N1. Of course, the initial position may be set to any position.

At the initial position SR, the control unit 50 rotates the rotary unit 260 so that the tip of the probe 281 faces the lower clamp pins 230a and 230b of the right rim FRR. The controller 50 also moves the tracing stylus holding unit 250 to the rim side so that the tracing stylus 281 contacts the groove of the right rim FRR. For example, in this way, the tracing stylus 281 is moved from the initial position SR to the measurement start position, and the tip of the tracing stylus 281 is inserted into the groove of the right rim FRR.

The control unit 50 moves the tip of the tracing stylus 281 along the groove of the right rim FRR. At this time, the control unit 50 drives the motor 265 to rotate the rotation base 251 for each rotation angle (radial angle), and at the same time, measures the probe about the rotation axis P1 (see FIG. 5B). The shaft 282 and the tracing stylus 281 are rotated. The tracing stylus 281 moves in the X direction, the Y direction, and the Z direction following the change in the rim groove. In this embodiment, the position of the tracing stylus 281 in the X and Y directions at the time of tracing is detected by the encoder 286, and the position of the tracing stylus 281 in the Z direction at the time of tracing is detected by the encoder 288.

Here, since the gap G exists in the rim of the frame F in the present embodiment, when the tracing stylus 281 approaches the gap G of the right rim FRR, the tracing stylus 281 comes off from the right rim FRR. For example, the control unit 50 rotates the tracing stylus 281 in a predetermined direction from the measurement start position, but when detecting that the tracing stylus 281 is disengaged from the right rim FRR, moves the tracing stylus 281 to the measurement start position. Then, the tracing stylus 281 is rotated in a direction opposite to the predetermined direction from the measurement start position. As a result, the tracing stylus 281 moves in the circumferential direction of the right rim FRR, and the groove of the right rim FRR except the gap G is traced.

The control unit 50 obtains the radial length from the reference position to the groove of the right rim FRR for each rotation angle (radial angle) of the rotation base 251. For example, in this embodiment, the rotation angle of the rotation base 251 is set every 0.36 degrees. Further, for example, in this embodiment, the reference position is set to the position of the rotation axis P1. For example, the radial length (rn) at a certain rotation angle (θn) of the rotation base 251 is the rotation angle of the probe shaft 282 and the distance from the center of rotation to the tip of the probe 281 (this is known), Is calculated based on Further, the control unit 50 obtains the position of the rim groove in the X direction, the Y direction, and the Z direction for each rotation angle of the rotation base 251 based on the detection signals of the encoder 286 and the encoder 288. By rotating the rotation base 251 once, three-dimensional data (xn, yn, zn) (n=1, 2, 3,..., N) of the groove of the right rim FRR is acquired. In addition, in the present embodiment, such three-dimensional data is represented by three-dimensional orthogonal coordinates. In the three-dimensional data, the X-direction and Y-direction positions are represented by two-dimensional polar coordinates by the rotation angle θn and the radial length rn, and the Z-direction position is represented by Z coordinates (rn, zn, θn) (n= 1, 2, 3,..., N) may be appropriately converted. For example, the control unit 50 causes the memory 55 to store the three-dimensional data excluding the gap G of the rim acquired as described above as the first target lens shape. In addition, in the present embodiment, such three-dimensional data may be stored in the memory 55 as the first rim shape.

FIG. 9 is an example of a first rim shape of the rim of the frame F. In the present embodiment, the acquired first target lens shape F1 is three-dimensional data, but the external shape F2 described later is two-dimensional data. Therefore, the control unit 50 may omit the Z coordinate of the first target lens shape F1 to make the first target lens shape F1 and the outer shape F2 have the same dimension. The control unit 50 connects the XY coordinates for each rotation angle θn in the first target lens shape F1 to obtain the first target lens shape F2 that is two-dimensional data, and stores it in the memory 55.

For example, after finishing the measurement of the right rim FRR, the operator similarly acquires the three-dimensional data of the groove of the left rim FRL. The three-dimensional data in the groove of the left rim FRL may be acquired by horizontally reversing the three-dimensional data in the groove of the right rim FRR.

<Identification of a defective area in the first lens shape (S3)>
Here, the first target lens shape F1 and F2 does not have data of a portion corresponding to the gap G of the rim, and is stored in the memory 55 in a state where a portion is missing. The control unit 50 identifies a region (defective region R1) in which the target lens shape is missing in the first target lens shapes F1 and F2 of the rim. In this embodiment, the first rim shape F1 of the rim has data for each rotation angle of the rotation base 251 in order from the measurement start position P0 (for example, a position where the rotation angle of the rotation base 251 is 0 degree) in a predetermined direction. Has been acquired. However, for example, when the tracing stylus 281 moves clockwise from the measurement start position P0 along the groove of the rim and the tracing stylus 281 is displaced from the groove of the rim at a certain rotation angle θn1 or later, the first lens shape F1 is obtained. Not not. Further, for example, when the tracing stylus 281 advances in the counterclockwise direction along the groove of the rim from the measurement start point P0, and the tracing stylus 281 deviates from the groove of the rim at a certain rotation angle θn2 or later, the first target lens shape F1 is formed. Has not been obtained. Therefore, for example, the control unit 50 represents the defective region R1 in the first lens shape F1 by the rotation angle of the rotation base 251, and stores the defective region R1 in the memory 55 as a region of the rotation angles θn1 to θn2.

<Acquisition of external shape (S4)>
Next, the operator acquires the outer shape from the demo lens DL. In the present embodiment, the outer shape of the demo lens DL is acquired by measuring the demo lens DL removed from the frame F using the measurement unit 200 included in the acquisition device 1. Note that it is also possible to acquire the outer shape of the demo lens DL by receiving data measured by a device different from the acquisition device 1 without using the measurement unit 200 of the acquisition device 1.

The operator operates the switch unit 4 to set the measurement mode to the pattern trace mode for acquiring the outer shape of the demo lens DL. Further, the operator attaches the right demo lens removed from the right rim FRR to the holder 15, widens the gap between the first slider 102 and the second slider 103, and attaches the holder 15 to the attachment portion 10. At this time, the first slider 102 contacts the holder 15, and the movement of the first slider 102 toward the front side (operator side) is restricted. The measurement mode may be automatically set to the pattern trace mode by detecting the state where the movement of the first slider 102 is restricted.

Subsequently, the operator operates the switch unit 4 to start measuring the outer shape of the demo lens DL. When the measurement start signal is input, the control unit 50 controls the driving of the measurement unit 200 and measures the outer shape of the right demo lens. The control unit 50 moves the tracing stylus shaft 282 from the initial position to the measurement start position, and brings the central portion 285 (hatched portion shown in FIG. 5B) of the tracing stylus shaft 282 into contact with the peripheral edge of the right demo lens. .. For example, in this embodiment, the position of the tracing stylus shaft 282 in the X direction is set to the central position of the clamp pins 230a and 230b. Further, for example, in the present embodiment, the initial position of the tracing stylus shaft 282 in the Y direction is set to the position of the mounting central axis P2 (see FIG. 3) of the demo lens DL. Of course, the initial position may be set to any position.

At such an initial position, the control unit 50 drives the tracing stylus holding unit 250 so that the central portion 285 of the tracing stylus shaft 282 is located at the height of the demo lens DL attached to the holder 15. The control unit 50 also moves the tracing stylus holding unit 250 to the demolens DL side so that the central portion 285 of the tracing stylus shaft 282 contacts the peripheral edge of the demolens DL. For example, in this way, the tracing stylus shaft 282 is moved from the initial position to the measurement start position, and the central portion 285 of the tracing stylus shaft 281 contacts the peripheral edge of the right demo lens.

The controller 50 moves the tracing stylus shaft 282 along the peripheral edge of the right demo lens. At this time, the control unit 50 drives the motor 265 to rotate the rotation base 251 for each rotation angle (radial angle), and at the same time, measures the probe about the rotation axis P1 (see FIG. 5B). The shaft 282 is rotated. The tracing stylus shaft 282 moves in the X direction and the Y direction according to the change in the peripheral edge of the right demo lens. In this embodiment, the position of the tracing stylus shaft 282 in the X direction and the Y direction at the time of tracing is detected by the encoder 286. As a result, the tracing stylus shaft 282 moves along the peripheral edge of the right demo lens, and the peripheral edge of the right demo lens is traced.

The control unit 50 obtains the radius vector length rn from the reference position to the peripheral edge of the right demo lens for each rotation angle (radial radius angle) θn of the rotation base 251. For example, in this embodiment, the reference position is set to the position of the mounting central axis P2. Further, the control unit 50 obtains the position of the peripheral edge of the right demo lens in the X direction and the Y direction for each rotation angle of the rotation base 251 based on the detection signal of the encoder 286. By rotating the rotation base 251 once, two-dimensional data (xn, yn) (n=1, 2, 3,...) Of the entire circumference of the right demo lens (in this embodiment, the apex of the bevel formed on the right demo lens). .., N) are acquired. In the present embodiment, such two-dimensional data is represented by two-dimensional Cartesian coordinates (that is, XY coordinates).

FIG. 10 is an example of the outer shape S2 of the peripheral edge of the demo lens DL. The control unit 50 connects the YX coordinates for each rotation angle θn to obtain the outer shape S2 and stores it in the memory 55. For example, after finishing the measurement of the right demo lens, the operator similarly acquires the two-dimensional data of the peripheral edge of the left demo lens. The two-dimensional data on the peripheral edge of the left demo lens may be obtained by horizontally reversing the two-dimensional data on the peripheral edge of the right demo lens.

<Identification of corresponding region in template region (S5)>
For the outer shape S2 of the demo lens DL, data is sequentially acquired from the measurement start position P0 (position at a rotation angle of 0 degree) in a predetermined direction for each rotation angle of the rotation base 251. In this embodiment, since there is a gap G on the rim of the frame F, when the demo lens DL is framed on the rim, part of the demo lens DL does not contact the rim. The outer shape S2 includes information on such a region (non-contact region R2a) where the demo lens DL does not contact the rim. The control unit 50 identifies the non-contact area R2a in the outer shape S2.

In the present embodiment, since the defective region R1 specified from the first rim shape F1 of the rim corresponds to the gap G of the rim, the defective region R1 in the first rim shape F1 of the rim and the demo lens It can be considered that the rotation angle of the rotation base 251 is substantially the same as that of the non-contact region R2a in the outer shape S2 of the DL. Therefore, the non-contact region R2a in the outer shape S2 of the demo lens DL may be a region of the rotation angles θn1 to θn2 similar to the defect region R1 in the first lens shape F1 of the rim. That is, the non-contact region R2a in the outer shape of the demo lens DL may be a corresponding region (hereinafter, corresponding region R2a) corresponding to the defective region R1 in the first lens shape F1 of the rim. The control unit 50 stores such a corresponding area R2a in the memory 55.

<Application of corresponding region to defective region (S6)>
When the control unit 50 acquires the first lens shape F2 of the rim and the outer shape S2 of the demo lens, respectively, it applies at least a part of the outer shape S2 to at least a part of the first lens shape F2. In the present embodiment, the corresponding region R2a corresponding to the defect region R1 in the demo lens is applied to the defect region R1 in which the target lens shape is missing in the first lens shape F2.

FIG. 11 is a diagram showing the relationship between the first lens shape F2 of the rim and the outer shape S2 of the demo lens DL. FIG. 11A is a diagram illustrating an application process for applying the outer shape S2 to the first target lens shape F2. FIG. 11B is a diagram showing a second target lens shape K1 obtained by applying the outer shape S2 to the first target lens shape F2. For example, the first rim shape F2 of the rim and the outer shape S2 of the demo lens DL do not always completely match. As an example, when the bevel apex of the demo lens DL is shallow with respect to the groove bottom of the rim, the first lens shape F2 of the rim has a shape slightly larger than the outer shape S2 of the demo lens DL. Further, as an example, when the relationship between the depth of the rim groove and the bevel length of the demo lens DL is different for each rotation angle θn, the first shape S1 of the rim groove and the outer shape S2 of the demo lens DL are different shapes. Become.

Therefore, the control unit 50 corrects at least one of the first rim shape F2 of the rim and the outer shape S2 of the demo lens DL so that one shape thereof substantially matches the other shape. Good. In this embodiment, the outer shape S2 of the demo lens DL is corrected so that the outer shape S2 substantially matches the first lens shape F2 of the rim. More specifically, by correcting the outer shape S2 of the demo lens DL, an area (non-corresponding area R2b) different from the corresponding area R2a in the outer shape S2 of the demo lens DL is substantially matched with the first lens shape F2 of the rim. Let

As an example, such correction of the outer shape S2 may be a correction of enlarging or reducing the outer shape S2 by utilizing that the outer shape S2 and the first lens shape F2 are substantially the same shape. .. In this case, a uniform ratio may be applied for all rotation angles θn, or different ratios may be applied for each rotation angle θn. Further, as an example, such correction of the outer shape S2 may be correction in which a parameter for superimposing the outer shape S2 on the first lens shape F2 is created and the outer shape S2 is deformed based on the parameter. Good. As a result, the outer shape S2 of the demo lens DL changes in XY coordinates for each rotation angle θn, and substantially matches the XY coordinates for each rotation angle θn in the first rim shape F2 of the rim.

The control unit 50 extracts XY coordinates corresponding to the rotation angles θn1 to θn2 of the corresponding region R2a from the corrected outer shape S2 of the demo lens DL, and the rotation angle θn1 of the defective region R1 in the first rim shape F2 of the rim. ~ Θn2. Thus, the first rim shape F2 of the rim, which is obtained by connecting the first rim shape F2 of the rim and the outer shape S2′ corresponding to the corresponding region R2a in the demo lens DL at the rotation angles θn1 and θn2, respectively. The second target lens shape K1 having a different shape is acquired.

Subsequently, the control unit 50 applies at least a part of the outer shape S2 of the demo lens to at least a part of the first rim shape of the rim (in this embodiment, the first target lens shape F1 which is three-dimensional data). .. In this embodiment, the corresponding region R2a corresponding to the defective region R1 in the demo lens is applied to the defective region R1 in the first rim shape. For example, the control unit 50 corrects the outer shape S2 of the demo lens DL so that the outer shape S2 substantially matches the first rim shape of the rim. More specifically, by correcting the outer shape S2 of the demo lens DL, a region (non-corresponding region R2b) different from the corresponding region R2a in the outer shape S2 of the demo lens DL is made to substantially match the first rim shape of the rim. As a result, the XY coordinate of the outer shape S2 of the demo lens DL changes for each rotation angle θn, and substantially matches the XY coordinate of each rotation angle θn in the first rim shape of the rim.

The control unit 50 extracts XY coordinates corresponding to the rotation angles θn1 to θn2 of the corresponding region R2a from the corrected outer shape S2′ of the demo lens DL, and the rotation angles θn1 to θn1 of the defective region R1 in the first rim shape of the rim. Applied to θn2. Thus, the first rim shape of the rim and the outer shape S2′ corresponding to the corresponding region R2a in the demo lens DL are connected by the rotation angles θn1 and θn2, respectively, and are different from the first rim shape of the rim. The second rim shape is acquired.

Further, the control unit 50 acquires the entire circumferential length Wa of the rim based on the second rim shape. In the present embodiment, the control unit 50 calculates the distances between the respective position coordinates from the three-dimensional data of the first rim shape (first lens shape F1) of the rim, and adds them together to obtain the loss region R1( The first circumference W1 excluding the rotation angles θn1 to θn2) is acquired. In addition, the control unit 50 predicts the Z coordinates of the rotation angles θn1 to θn2 by using the Z coordinates of the rotation angles θn1 and θn2 and the outer shape S2′, and thus the second circumference of the loss region R1. Get the long W2. In addition to the Z coordinates of the rotation angles θn1 and θn2 and the outer shape S2′, the control unit 50 uses at least one of the previously acquired lens curve information, frame curve information, demo lens curve information, and the like. Then, the Z coordinate of the rotation angles θn1 to θn2 may be predicted to acquire the second circumference W2 of the loss region R1. The control unit 50 obtains the total perimeter Wa of the rim based on the second rim shape by adding the first perimeter W1 and the second perimeter W2.

<Obtaining the target lens shape and circumference (S7)>
In this embodiment, by correcting the second rim shape K1 of the rim and the peripheral length Wa to a more optimal state, a rim shape for processing a lens to be framed in the rim of the frame F is obtained. Each circumference is acquired. For example, the control unit 50 automatically sets the apex position of the bevel formed on the lens, the bevel curve value, the bevel inclination angle, and the like from the frame shape data, the lens shape data, the layout data, and the like. For example, the position of the apex of the bevel may be set based on the edge thickness of the lens so as to pass through a half position of the thinnest edge portion. Further, for example, the bevel curve may be a curve along the front curve of the lens. The set apex position of the bevel, the curve value of the bevel, the inclination angle of the bevel, and the like can be manually adjusted by the operator. As a result, three-dimensional data of the second rim shape K1 of the rim is acquired. Further, based on this three-dimensional data, the lens circumference Wb is acquired from the distance between the position coordinates for each rotation angle θn.

The control unit 50 has an overall circumference Wa of the rim acquired based on the second rim shape, and a circumference Wb of the lens acquired by using the second rim shape K1 of the rim as three-dimensional data. If the lengths are different from each other, the size of the second lens shape K1 may be adjusted so that the perimeter Wa and the perimeter Wb are the same (substantially the same). For example, when the circumference length Wa<the circumference length Wb, the size of the second target lens shape K1 is entirely reduced so that the circumference length Wa=the circumference length Wb. Further, when the peripheral length Wa>the peripheral length Wb, the size of the second lens shape K1 is entirely enlarged so that the peripheral length Wa=the peripheral length Wb. Thereby, the target lens shape and the perimeter for processing the lens are acquired.

<Acquisition of processing control data (S8)>
The control unit 50 uses the acquired target lens shape, layout data, processing conditions, etc. to acquire processing control data for processing the lens to be framed in the frame F. In the present embodiment, the control unit 50 calculates processing control data for controlling the rotation of the chuck shaft, the movement of the chuck shaft, and the like in the eyeglass lens periphery processing apparatus. For example, the control unit 50 may acquire the processing control data in this manner and transmit the processing control data to the lens peripheral edge processing device. Of course, the acquired target lens shape, lens layout data, lens processing conditions, and the like may be transmitted to the lens edge processing apparatus, and the processing control data may be calculated by the control unit of the lens edge processing apparatus. For example, the control unit of the lens peripheral edge processing device processes the lens based on the processing control data. As a result, the operator can obtain the lens in which the frame F is framed well.

As described above, for example, the eyeglass lens peripheral edge processing information acquisition device in the present embodiment acquires the first rim shape of the rim of the spectacle frame or the first rim shape of the rim, and determines the demo lens or template of the spectacle frame. A second lens shape different from the first lens shape is acquired by acquiring an outer shape that is a shape and applying at least a part of the outer shape to at least a part of the first lens shape, or By applying at least a part of the outer shape to at least a part of the first rim shape, a second rim shape different from the first rim shape is acquired, and the first rim shape is determined based on the second rim shape. Get the total perimeter of the corrected rim. For example, in the past, when information could not be obtained from the frame rim, information was obtained from the demo lens (or template) and the lens shape and circumference for processing the lens were used. The framed state of the processed lens was sometimes unfavorable. However, by performing the control of this embodiment, the operator can obtain the lens shape and the perimeter of the lens in consideration of the information of the rim even when the information cannot be obtained from the rim. .. By creating processing control data using the target lens shape and peripheral length and processing the peripheral edge of the lens, it is possible to improve the fitting of the lens in the frame to a more suitable state than before.

Further, for example, the eyeglass lens peripheral edge processing information acquisition device in the present embodiment specifies a predetermined area from the first lens shape or the first rim shape of the rim of the frame, and determines a predetermined area from the outer shape of the demo lens or template. Corresponding area is specified, and at least a part of the corresponding area is applied to at least a part of the predetermined area. By specifying the predetermined area of the rim and the corresponding area of the demo lens or the template, the corresponding area of the demo lens or the template can be smoothly applied to the predetermined area of the rim. Further, by specifying the predetermined area of the rim and the corresponding area of the demo lens or the template respectively, the corresponding area of the demo lens or the template is accurately applied to the predetermined area of the rim, and a more accurate lens is obtained. The target lens shape and circumference can be obtained.

Further, for example, in the eyeglass lens peripheral edge processing information acquisition device in the present embodiment, the predetermined region of the rim is a defective region in which the first rim shape of the rim or a part of the first rim shape is missing, and At least a part of the corresponding area of the demo lens or the template is applied to at least a part of the defective area. As a result, incomplete rim information obtained from a frame in which the stylus comes off due to the groove depth or warpage of the rim, a frame with a gap in the rim (a frame in which the rim is partially missing), etc. Even in this case, it is possible to obtain the lens shape and the perimeter of the lens in consideration of the rim information by using the information of the demo lens or the template.

Further, for example, in the eyeglass lens peripheral edge processing information acquisition device in the present embodiment, the eyeglass frame is an eyeglass frame in which half or more of the rim contacts the eyeglass lens when the eyeglass lens is framed. For example, for a frame with a gap in the rim (a frame where the rim is partially missing), a frame where a part of the lens does not fit in the rim (a frame where a part of the lens does not contact the rim), etc. It was difficult to obtain information on the rim of the frame because the probe fell out of the gap, the shape of the rim did not match the shape of the lens, and information on the demo lens or template was used for lens processing. .. However, in such a case, the lens may not be properly framed in the frame. As an example, there is a case where the lens cannot be properly framed in the frame because an appropriate target lens shape cannot be obtained. Depending on the present embodiment, information on the missing portion of the rim or the portion where the lens does not contact is acquired, and information on the entire rim (for example, rim warp, rim curve, distance between left and right lenses, etc.) is taken into consideration. Since the lens can be processed in this manner, the framing condition for these frames is improved.

Further, for example, the spectacle lens peripheral edge processing information acquisition device in the present embodiment acquires processing control data based on the second lens shape of the rim and the entire circumference of the rim. With this, the operator can obtain more accurate processing control data than before, and by using this processing control data for processing the lens, the framed state of the spectacle lens with respect to the spectacle frame is improved. It

<Transformation example>
In this embodiment, the pattern trace mode for acquiring the outer peripheral shape of the demo lens DL (or template MP) after performing the measurement in the frame trace mode for acquiring the first lens shape of the rim. However, the present invention is not limited to this. Either the acquisition of the first lens shape in the frame trace mode or the acquisition of the outer shape in the pattern trace mode may be performed first. Further, the acquisition of the first target lens shape in the frame trace mode and the acquisition of the outer shape in the pattern trace mode may be automatically performed continuously.

In this embodiment, the configuration in which the rim and the demo lens are measured by using the measurement unit 200 to acquire the first rim shape of the rim and the outer shape of the demo lens has been described as an example. Not limited. For example, the acquisition device 1 in the present embodiment is configured to include a first measurement unit that measures the first lens shape of the rim and a second measurement unit that measures the outer shape of the demo lens (or template). May be. In this case, the acquisition of the first target lens shape and the acquisition of the outer shape can be performed at the same time, and the measurement time can be shortened.

In this embodiment, by detecting the rotation angle θn at which the tracing stylus 281 is displaced from the rim, it is determined whether or not the rim has a defective region R1 and the rim defective region R1 is specified at the same time. However, the present invention is not limited to this. Of course, the determination of whether or not the defective region R1 exists on the rim may be performed separately from the specification of the defective region R1 on the rim.

For example, the presence/absence of the rim defect region R1 may be determined based on an input signal input by the operator operating the monitor 3 or the switch unit 4. Further, for example, the presence/absence of the defective region R1 of the rim may be determined by detecting whether or not the tracing stylus 281 is detached from the rim. Further, for example, the presence or absence of the rim loss region R1 may be determined by capturing the frame F and analyzing the captured image by image processing (for example, edge detection). In this case, either the frame F in which the demo lens DL is framed or the frame F in which the demo lens DL is not framed may be captured.

For example, when the control unit 50 determines that the defective region R1 does not exist in the frame F, the target lens shape and the perimeter of the lens to be processed may be acquired from the rim of the frame F. However, for example, when the control unit 50 determines that the defective region R1 exists in the frame F, the application process of applying the corresponding region R2a to the defective region R1 is executed based on the determination result, as in the present embodiment. May be. As a result, an appropriate process is executed as needed, so that it is possible to obtain the optimum lens shape and circumference of the lens that match the frame.

When the control unit 50 determines that the defective region R1 is present in the frame F, the control unit 50 guides information for prompting the operator to measure the demo lens DL based on the determination result (for example, to the monitor 3). At least one of displaying a message, generating a voice guide, blinking the switch, and the like) may be output.

Further, even when the control unit 50 determines that the defective region R1 exists in the frame F, depending on the size of the defective region R1 of the rim, the outer shape S2 may not always be present in the defective region R1 of the first target lens shape F2. The corresponding area R2a may not be applied. For example, when the defective region R1 of the first lens shape F2 is narrower than the range of the predetermined rotation angle θn, the position coordinates of the rotation angles before and after the range of the predetermined rotation angle θn of the first lens shape F2. May be used to perform interpolation processing (for example, linear interpolation, curve interpolation, etc.). As an example, the control unit 50 obtains a quadratic function from the position coordinates of points (for example, 10 points, etc.) corresponding to an arbitrary rotation angle θn before the loss region R1 and determines the quadratic function from the loss region R1. A quadratic function is obtained from the position coordinates of points (for example, 10 points, etc.) corresponding to the subsequent arbitrary rotation angle θn. The control unit 50 may interpolate the defective region R1 by obtaining an approximate function that approximates each quadratic function.

In the present embodiment, the configuration in which the defective region R1 is specified from the first rim shape F2 of the rim by detecting the rotation angle θn at which the tracing stylus 281 is displaced from the rim has been described as an example. Not limited. The operator may specify the defective region R1 in advance to specify the defective region R1 from the first rim shape F2 of the rim. For example, in this case, the outer shape S2 of the demo lens DL may be acquired by the pattern trace mode and the outer shape S2 may be displayed on the monitor 3. The operator operates the monitor 3 or the switch unit 4 to specify an arbitrary position on the outer shape S2. For example, two points, a start point and an end point, where the demo lens contacts the rim are designated. Thereby, the control unit 50 may acquire the rotation angles θn1 and θn2 of the rim lacking region R1. Of course, the rotation angles θn1 and θn2 of the defective region R1 in the first rim shape F2 of the rim may be specified by analyzing the captured image of the frame F by image processing.

In the present embodiment, the configuration in which the corresponding area S1 is applied to the rim defect area R1 by substantially matching the outer shape S2 of the demo lens with the first lens shape F2 of the rim has been described as an example. Not limited to. For example, the outer shape S2 of the demo lens may be substantially matched with the first shape S1 of the rim to apply the corresponding area S1 to the defective area R1 of the rim. More specifically, by correcting the first rim shape F2 of the rim, the first rim shape F2 of the rim is provided in a region (non-corresponding region R2b) different from the corresponding region R2a in the outer shape S2 of the demo lens DL. You may make it correspond substantially. The control unit 50 extracts the XY coordinates corresponding to the rotation angles θn1 to θn2 of the corresponding region R2a from the outer shape S2 of the demo lens DL, and the rotation angle θn1 of the defect region R1 in the first rim shape of the rim whose rim is corrected. The second rim shape K1 of the rim may be acquired by applying to ˜θn2.

In this embodiment, the corresponding area R2a does not have to be applied to the defect area R1 by using the first lens shape F2 of the rim and the outer shape S2 of the demo lens. For example, only the corresponding region R2a in the outer shape S2 of the demo lens may be used and the corresponding region R2a may be applied to the defective region R1. In this case, in the outer shape S2 of the demo lens, the position coordinates of each point at the rotation angle θn corresponding to the corresponding region R2a are extracted, and the points at both ends of the extracted position coordinates (that is, the points at the rotation angles θn1 and θn2) are The second rim shape K1 of the rim may be acquired by enlarging or reducing the shape of the corresponding area R2a so as to match the rotation angles θn1 and θn2 of the defective area R1.

In the present embodiment, a case where the target lens shape and the peripheral length of the lens are acquired by performing the above-described application process on a frame having a gap G on the rim (a frame in which the rim is partially missing). The description is given by way of example, but is not limited to this. For example, perform the above application process on a frame where a part of the lens does not fit on the rim (a frame where a part of the lens does not contact the rim), and obtain the lens shape and circumference of the lens. Good. That is, in this embodiment, when the lens is put in the frame, at least half of the rim of the frame is in contact with the lens, the above application processing is performed to obtain the lens shape and the perimeter. You may. In addition, in the present embodiment, when the first target lens shape cannot be successfully obtained from a part of the rim of the frame, the above-described application processing may be performed to acquire the target lens shape and the perimeter. By creating processing control data using such data and processing the lens, it is possible to improve rattling, distortion, instability, and the like that occur when the lens is framed.

In the present embodiment, the configuration in which the lens shape of the lens is acquired based on the first shape and the outer shape and the processing control data is acquired based on the shape of the lens has been described as an example. Not limited. For example, the processing control data may be directly acquired based on the first target lens shape and the outer shape.

In the present embodiment, the case where the acquisition device 1 acquires the lens shape and processing control data has been described as an example, but the present invention is not limited to this. Of course, the target lens shape and the processing control data may be acquired by another device (for example, the spectacle lens processing device described in JP-A-2016-190287). In this case, the first target lens shape and outer shape may be transferred to another device, or the second target lens shape K1 acquired based on the first target lens shape and outer shape may be transferred to another device. It may be configured to be transferred.

1 Eyeglass Lens Peripheral Processing Information Acquisition Device 100 Frame Holding Unit 150 Clamping Mechanism 200 Measuring Unit 210 Moving Unit 250 Measuring Element Holding Unit 281 Measuring Element 282 Measuring Element Axis

Claims (7)

A spectacle lens peripheral processing information acquisition device for acquiring a lens shape or a perimeter for processing a spectacle lens to be framed in a spectacle frame,
A first rim shape of the rim of the spectacle frame, or a first information acquisition means for acquiring the first rim shape of the rim;
Second information acquisition means for acquiring the outer shape which is the shape of the demo lens or template of the spectacle frame,
By applying at least a part of the outer shape to at least a part of the first target lens shape, a second target lens shape different from the first target lens shape is obtained, or of the first rim shape. By applying at least a part of the outer shape to at least a part, a second rim shape different from the first rim shape is acquired, and the first rim shape is corrected based on the second rim shape. Processing means for acquiring the entire circumference of the rim,
A spectacle lens peripheral edge processing information acquisition device, comprising:
The spectacle lens peripheral edge processing information acquisition device according to claim 1,
The processing means identifies a predetermined area from the first rim shape or the first rim shape acquired by the first information acquisition means, and the predetermined area from the outer shape acquired by the second information acquisition means. A spectacle lens peripheral edge processing information acquisition device, characterized in that a corresponding area corresponding to the area is specified and at least a part of the corresponding area is applied to at least a part of the predetermined area.
The spectacle lens peripheral edge processing information acquisition device according to claim 1 or 2,
The processing means determines the presence or absence of the predetermined area in the first target lens shape or the first rim shape acquired by the first information acquisition means, and based on the determination result, at least one of the predetermined areas is determined. An eyeglass lens peripheral edge processing information acquisition device, characterized by executing an application process for applying at least a part of the corresponding area to a part.
In the eyeglass lens peripheral edge processing information acquisition device according to any one of claims 1 to 3,
The predetermined region is a defective region in which a part of the first rim shape or the first rim shape is defective,
The processing means applies at least a part of the corresponding region to at least a part of the defective region, and a spectacle lens peripheral edge processing information acquisition device characterized by the above-mentioned.
In the eyeglass lens peripheral edge processing information acquisition device according to any one of claims 1 to 4,
The eyeglass lens peripheral edge processing information acquisition device, wherein the eyeglass frame is an eyeglass frame in which half or more of the rim is in contact with the eyeglass lens when the eyeglass lens is framed.
In the eyeglass lens peripheral edge processing information acquisition device according to any one of claims 1 to 5,
Based on the second lens shape obtained by the processing means and the entire circumference of the rim,
An eyeglass lens peripheral edge processing information acquisition device comprising processing control data acquisition means for acquiring processing control data for processing the eyeglass lens.
A spectacle lens rim processing information acquisition program used in a spectacle lens rim processing information acquisition device for acquiring a lens shape or a perimeter for processing a spectacle lens to be framed in a spectacle frame,
By being executed by the processor of the eyeglass lens peripheral edge processing information acquisition device,
A first information acquisition step of acquiring a first rim shape of the rim of the spectacle frame or a first rim shape of the rim;
A second information acquisition step of acquiring the outer shape which is the shape of the demo lens or template of the spectacle frame;
By applying at least a part of the outer shape to at least a part of the first target lens shape, a second target lens shape different from the first target lens shape is obtained, or of the first rim shape. By applying at least a part of the outer shape to at least a part, a second rim shape different from the first rim shape is acquired, and the first rim shape is corrected based on the second rim shape. A processing step for obtaining the entire circumference of the rim,
A spectacle lens rim processing information acquisition program, which causes the spectacle lens rim processing information acquisition device to execute.