JP2019100928A - Lens shape measurement device - Google Patents

Abstract

To provide a lens shape measurement device capable of efficiently acquiring edge information of a spectacle lens.SOLUTION: A lens shape measurement device for processing the circumference of a spectacle lens includes: refractive index acquiring means for acquiring the refractive index of the spectacle lens; image data acquiring means for acquiring cross section image data including front surface image data on the front side of the spectacle lens and rear surface image data on the rear side of the spectacle lens; and edge information acquiring means for acquiring edge information as information related to the edge of the spectacle lens on the basis of refractive index and cross section image data.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a lens shape measurement apparatus for processing the periphery of an eyeglass lens.

  A lens shape that acquires edge information (for example, front edge position of edge, rear edge position of edge, edge thickness, etc.) by contacting the measuring element with the front and back surfaces of the eyeglass lens and rotating the eyeglass lens Measuring devices are known. Alternatively, there is known an apparatus provided with such a lens shape measurement mechanism, which is used to process the periphery of a spectacle lens (see, for example, Patent Document 1).

JP, 2014-0046478, A

  By the way, in the above-described apparatus, the spectacle lens is rotated at a predetermined speed or less so that the stylus can reliably read the edge information of the spectacle lens. For this reason, it took time to acquire edge information. Further, in the above-described apparatus, the configuration of the apparatus is complicated so as to be compatible with various spectacle lenses having different edge thickness and curve value.

  This indication makes it a technical subject to provide a lens shape measuring device which can acquire edge information on an eyeglass lens efficiently in view of the above-mentioned conventional technology.

In order to solve the above-mentioned subject, this indication is characterized by having the following composition.
(1) A lens shape measuring device according to a first aspect of the present disclosure is a lens shape measuring device for processing the peripheral edge of an eyeglass lens, which is a refractive index acquisition unit for acquiring the refractive index of the eyeglass lens; Image data acquisition means for acquiring cross-sectional image data including front image data on the front surface of the spectacle lens and back surface image data on the rear surface of the spectacle lens; and the spectacle lens based on the refractive index and the cross-sectional image data And Koba information acquisition means for acquiring Koba information which is information related to Koba.

It is an outline view of a cup attachment device. It is a schematic block diagram of a lens support mechanism. It is a schematic block diagram of a cup attachment mechanism. It is a schematic block diagram of a lens information measurement mechanism. It is an example of a target board. It is a schematic block diagram of a cross-sectional image data acquisition mechanism. It is a schematic block diagram of a control system. It is a flowchart for demonstrating control operation. It is an example of cross-sectional image data. It is an example of a simulation screen. It is a schematic block diagram of a lens periphery processing apparatus. It is a figure explaining the Y direction movement mechanism in case the edge thickness of a lens differs. It is a figure which shows the state in which the lens chuck axis | shaft hold | maintained the lens. It is a figure explaining control for displaying front image data in a predetermined position.

<Overview>
An outline of a centering apparatus according to an embodiment of the present disclosure will be described. In the present disclosure, L and R attached to reference numerals indicate left and right, respectively. Further, the same, parallel, vertical, and the like in the present disclosure include states such as substantially the same, substantially parallel, and substantially vertical, respectively. Also, the items classified by <> below may be used independently or in association.

  Although the technology of the present disclosure will be described by taking the centering device as an example, at least a part of the technology of the present disclosure is not limited to the case where it is applied to the centering device. For example, at least a part of the technology of the present disclosure is applicable in a lens processing device used to process a lens in a process before the spectacle lens is held by the lens holding means.

  For example, as the centering device, a lens support means (for example, the lens support mechanism 10) for mounting the eyeglass lens, and a lens holding means (for example, for holding the eyeglass lens for processing the periphery of the eyeglass lens) An alignment position setting means for setting an alignment position which is an attachment position of the lens holding unit 100 with respect to the eyeglass lens, wherein the alignment position for setting the axis alignment position of the eyeglass lens mounted on the lens support means And a setting means. Further, for example, as the centering device, cup mounting means for mounting a cup for holding the eyeglass lens in the lens holding means and attaching the cup to the eyeglass lens based on the centering position set by the centering position setting means, It may be a cup attachment device (for example, the cup attachment device 1) provided with cup attachment means (for example, the cup attachment mechanism 30) for attaching a cup to the surface of the spectacle lens placed on the lens support means.

  For example, the centering apparatus includes centering position setting means (for example, a lens information measuring mechanism 40). The centering position setting means sets a centering position, which is a mounting position of the lens holding means holding the eyeglass lens to process the periphery of the eyeglass lens, with respect to the eyeglass lens. For example, the centering position may be at least one of the optical center position of the spectacle lens, the geometric center position, and the like.

  For example, the centering apparatus includes refractive index acquisition means (for example, the control unit 70). The refractive index acquisition means acquires the refractive index of the spectacle lens. For example, the refractive index acquisition means may acquire the refractive index of the spectacle lens measured by another device different from the centering device. In this case, the refractive index of the spectacle lens may be input by the operator operating the operation means (for example, the input button 3). Also, for example, the refractive index acquisition unit may include a refractive index measurement unit for measuring the refractive index of the spectacle lens. In this case, the refractive index of the spectacle lens is obtained by the refractive index measuring means measuring the refractive index of the spectacle lens.

  For example, the centering device may include a lens shape acquisition means (for example, a frame shape measurement mechanism 20). The lens shape obtaining means obtains a lens shape in the spectacle lens. For example, the lens shape of the eyeglass lens may be at least one of an inner peripheral shape of an eyeglass frame, an outer peripheral shape of a demo lens, and the like.

<Image data acquisition means>
For example, the alignment apparatus includes an image data acquisition unit (for example, an image data acquisition mechanism 60). The image data acquisition means acquires cross-sectional image data including front image data on the front surface of the spectacle lens and back image data on the rear surface of the spectacle lens. For example, in the present embodiment, the image data acquisition unit may acquire cross-sectional image data based on the lens shape of the spectacle lens. In this case, the cross-sectional image data may be acquired in at least a partial region of the entire circumference of the lens shape of the eyeglass lens (all portions where the lens shape is formed at each radial angle). In this case, the cross-sectional image data may be acquired on the entire periphery of the lens shape of the spectacle lens. Further, in this case, the cross-sectional image data may be acquired in a plurality of regions (for example, points at each predetermined radius vector angle, etc.) over the entire periphery of the lens shape of the spectacle lens. Further, in this case, the cross-sectional image data may be acquired in a partial region over the entire circumference of the lens shape of the spectacle lens. Note that, for example, the cross-sectional image data may be an image (image data). Also, for example, the cross-sectional image data may be a signal (signal data).

<Projection optical system>
For example, the image data acquisition unit includes a projection optical system (for example, a projection optical system 64). The projection optical system projects the measurement light flux toward the front or back of the spectacle lens. For example, the projection optical system may irradiate the measurement light flux perpendicularly to the lens surface of the spectacle lens. In this case, the measurement light beam may be irregularly reflected by the lens surface of the spectacle lens. Further, for example, the light projecting optical system may irradiate the measurement light beam at a predetermined inclination angle with respect to the lens surface of the spectacle lens.

  For example, the projection optical system may include a light source (for example, the light source 65). The light source may be configured to emit a point-like measurement light flux toward the spectacle lens. In this case, a point light source may be used as the light source. The point light source may be configured to arrange one to emit one measurement light flux. The point light source may be configured to emit a measurement light beam having a width by arranging a plurality of the light sources side by side. In addition, the light source may be configured to irradiate a slit-like measurement light flux toward the spectacle lens. For example, in this case, a slit plate and a lens may be provided in the light path between the light source and the lens surface of the spectacle lens (that is, the front surface or the rear surface of the spectacle lens). Also in this case, it is possible to irradiate a measuring light beam having a width toward the spectacle lens.

  For example, the projection optical system may have an optical member. For example, as the optical member, at least one of a lens, a mirror, a diaphragm, and the like may be used. In this case, for example, the measurement light flux emitted from the light source may be irradiated toward the lens surface of the spectacle lens through each optical member. Of course, as an optical member, it is not limited to said optical member, A different optical member may be used.

<Light receiving optical system>
For example, the image data acquisition unit includes a light receiving optical system (for example, a light receiving optical system 66). The light receiving optical system may include a light receiving element (for example, an imaging element 69). The light receiving optical system receives, by the light receiving element, a first reflected light beam in which the measurement light beam is reflected on the front surface of the spectacle lens and a second reflected light beam in which the measurement light beam is reflected on the rear surface of the spectacle lens. For example, the light receiving optical system may receive a reflected light beam (for example, regular reflected light, scattered light, etc.) reflected by the lens surface of the spectacle lens by the light receiving element.

  For example, in the present embodiment, the cross-sectional image data (for example, the cross-sectional image data including the front image data formed by the first reflected light beam and the back image data formed by the second reflected light beam) Obtain data 75). For example, this allows the image data acquisition means to acquire cross-sectional image data in a non-contact manner by the measurement light flux. Therefore, the operator can efficiently acquire edge information of the spectacle lens. Moreover, the image data acquisition means can acquire cross-sectional image data by easy structure by this.

  For example, the light receiving optical system may have an optical member. For example, as the optical member, at least one of a lens, a mirror, a diaphragm, and the like may be used. In this case, the reflected light beam reflected by the lens surface of the spectacle lens may be received by the light receiving element via each optical member. Of course, as an optical member, it is not limited to said optical member, A different optical member may be used.

<Edge information acquisition means>
For example, the centering apparatus includes edge information acquisition means (for example, the control unit 70). The edge information acquisition means acquires edge information which is information related to the edge of the spectacle lens. For example, the edge information may be at least one of a front position of the spectacle lens, a back position value of the spectacle lens, an edge thickness of the spectacle lens, and the like. Also, for example, the edge information may be at least one of a front curve value of the spectacle lens and a back curve value of the spectacle lens. This makes it possible to obtain edge information, which was conventionally obtained using the lens edge processing device, using the centering device. Therefore, the use time of the lens rim processing apparatus can be shortened, and the time required for producing the glasses can be relatively shortened.

  For example, the edge information acquisition means may have edge measurement means. The edge measuring means is used to obtain edge information of the spectacle lens. For example, in the present embodiment, the measurement optical system (for example, the measurement optical system 61) included in the image data acquisition unit doubles as an edge measurement unit. Also, for example, in the present embodiment, the edge measuring unit obtains edge information of the spectacle lens placed on the lens support unit. The edge measurement means may be configured to obtain edge information of the spectacle lens in a non-contact manner. Of course, the edge measuring means may be configured to acquire edge information of the spectacle lens in a contact manner. In this case, edge information may be acquired by bringing a measuring element or the like into contact with the spectacle lens. For example, the edge information acquisition unit measures the spectacle lens by controlling the edge measurement unit, and acquires edge information. By this, it becomes possible to measure the edge information of a spectacles lens using a centering device, and can shorten the use time of a lens periphery processing apparatus.

  For example, the edge information acquisition means may control the edge measurement means based on the lens shape of the spectacle lens to acquire edge information. Thereby, the edge of a position based on the lens shape of the spectacle lens (for example, at least one of a position corresponding to the lens shape, a position of a bevel at each radial angle, a position of a chamfer at each radial angle, etc.) Information is acquired. That is, edge information of at least one of the rim and the periphery of the lens shape of the spectacle lens is acquired. Note that, for example, when edge information of a plurality of regions (for example, points at each predetermined radius vector angle, etc.) in the entire periphery of the eyeglass shape of the eyeglass lens is acquired as a position based on the eyeglass shape of the eyeglass lens In order to obtain edge information at that position, interpolation may be performed using edge information at the peripheral radius angle.

  For example, the edge information acquisition means may acquire edge information which is information related to the edge of the eyeglass lens, based on the refractive index of the eyeglass lens and the cross-sectional image data. In this way, it is possible to efficiently acquire edge information of the spectacle lens by using cross-sectional image data changed according to the refractive index of the spectacle lens. Note that the edge information acquisition unit may correct edge information of the spectacle lens based on the refractive index of the spectacle lens and the cross-sectional image data. In this case, the edge information acquisition unit may be configured to correct the cross-sectional image data based on the refractive index and to acquire the edge information based on the corrected cross-sectional image data. In this case, the edge information acquisition unit may be configured to acquire the edge information by correcting the edge information acquired based on the cross-sectional image data based on the refractive index.

<Finishing position setting means>
For example, the centering apparatus includes finishing position setting means (for example, the control unit 70). The finish processing position setting means sets the finish processing position of the edge based on the edge information of the spectacle lens. For example, the finish processing position of the edge may be at least one of the position of the bevel formed on the edge of the spectacle lens, the position of the groove, the position of the chamfer, and the like. By this, it is possible to set the finishing position, which has conventionally been set using the lens edge processing apparatus, using the centering apparatus. Therefore, while the use time of a lens periphery processing apparatus becomes short, the waiting time of a lens periphery processing apparatus is eased, and the time concerning preparation of spectacles can be shortened further.

  For example, the finishing position setting means displays the finishing position based on the edge information on the display means (for example, the display 2). For example, the finishing position setting means may be configured to automatically set the finishing position of the edge based on the edge information. Also, for example, the finishing position setting means may be configured to manually set the finish processing position of the edge by the operator. In this case, the finishing position setting means sets the finishing position on the basis of an operation signal from the operating means for adjusting the finishing position on the display means. This makes it easy for the operator to grasp the finishing position formed on the spectacle lens. In addition, the operator can easily adjust the finishing position formed on the spectacle lens.

  The finish processing position setting means may display the finish processing position based on the edge information of the left eyeglass lens and the finish position based on the edge information of the right eyeglass lens comparably on the display means. The finishing position setting means may set the finishing position of at least one of the left eyeglass lens and the right eyeglass lens based on the operation signal from the operation means. For example, in this case, the display unit may be provided with the operation unit. Also, for example, in this case, the display unit and the operation unit may be provided separately. As a result, the operator can easily grasp the balance of the finishing position in the left eyeglass lens and the right eyeglass lens. Further, the operator can adjust the finishing position set for the left eyeglass lens and the right eyeglass lens, respectively, in consideration of the balance of the finishing position. Therefore, the operator can easily produce eyeglasses that look good.

  In the present embodiment, the lens support means for mounting the eyeglass lens, and the lens holding means (for example, the lens holding unit 100) for holding the eyeglass lens in order to process the periphery of the eyeglass lens And a centering position setting unit configured to set a centering position which is a mounting position with respect to the spectacle lens, the centering position setting unit configured to set a centering position of the spectacle lens mounted on the lens support unit. The device may be used as a lens shape measuring device. Further, in the present embodiment, it is a cup attachment means for attaching the cup for holding the eyeglass lens to the lens holding means to the eyeglass lens based on the centering position set by the centering position setting means, A cup mounting device provided with cup mounting means for mounting the cup on the surface of the spectacle lens placed on the support means may be used as the lens shape measuring device. Further, in the present embodiment, a lens edge processing apparatus (for example, the lens edge processing apparatus 90) including a processing tool (for example, the processing unit 300) for processing the edge of the spectacle lens held by the lens holding unit is It may be used as a lens shape measuring device. For example, in at least one of the centering device, the cup attachment device, and the lens edge processing device, the operator can efficiently obtain the edge information of the eyeglass lens by acquiring the edge information of the eyeglass lens in a noncontact manner. You will be able to get to.

  In the present embodiment, an eyeglass lens processing system for processing an eyeglass lens may be constructed using the above-described centering device (or cup attachment device). For example, in this case, a shaft for setting an axial position, which is a mounting position of the lens holding means (for example, the lens holding unit 100) for holding and holding the eyeglass lens to process the periphery of the eyeglass lens. A centering device provided with a delivery position setting means, a processing tool, a lens holding means for holding the spectacle lens, and a processing control data acquisition means (for example, a control unit for acquiring processing control data for processing the periphery of the spectacle lens And a lens edge processing apparatus for processing the spectacle lens held by the lens holding means by controlling the processing tool based on the processing control data acquired by the processing control data acquisition means. An eyeglass lens processing system may be constructed.

  Also, for example, in this case, a cup mounting device having a cup mounting means for mounting the cup on the surface of the eyeglass lens, a processing tool, a lens holding means for holding the eyeglass lens attached with the cup, and a rim of the eyeglass lens Processing control data acquisition means for acquiring processing control data for processing the workpiece, and the processing tool is controlled based on the processing control data acquired by the processing control data acquisition means and held by the holding means An eyeglass lens processing system may be constructed using a lens edge processing apparatus for processing an eyeglass lens. In such a spectacle lens processing system, the first edge information of the spectacle lens may be acquired in the cup attachment device. Also, in such a spectacle lens processing system, the finish processing position of the edge may be set based on the first edge information of the spectacle lens. Moreover, in such a spectacle lens processing system, the second edge information at at least one radial angle of the spectacle lens may be acquired in the lens peripheral processing device. For example, edge information of one point of the spectacle lens may be acquired as the second edge information. Also, for example, edge information of a plurality of points of the spectacle lens may be acquired as the second edge information. When edge information of a plurality of points is acquired as the second edge information, at least one of deformation and inclination of the spectacle lens caused by the spectacle lens being held by the lens holding means is predicted. It is also good. By this, the processing control data acquisition means may acquire the processing control data based on the first edge information, the second edge information, and the finishing position.

  Further, in the present embodiment, the eyeglass lens processing method for processing the peripheral edge of the eyeglass lens may be implemented using the above-described centering device (or cup attachment device). For example, in this case, the first edge information acquisition step of acquiring the first edge information of the spectacle lens, and the centering position which is the attachment position to the spectacle lens of the lens holding means holding the spectacle lens between After the centering position setting step, the first edge information acquisition step and the centering position setting step are performed, the spectacle lens is held in the lens holding means of the lens rim processing device based on the set centering position. After the holding step, the first edge information acquisition step and the centering position setting step are performed, a processing control data acquisition step for acquiring processing control data based on the first edge information, and based on the processing control data, And a processing step of controlling the processing tool to process the spectacle lens held by the lens holding means.

  Also, for example, in this case, the first edge information acquisition step of acquiring the first edge information of the eyeglass lens, the cup attaching step of attaching the cup to the eyeglass lens, the first edge information acquisition step and the cup attachment step After being carried out, a holding step of holding the spectacle lens to which the cup is attached to the lens holding means of the lens peripheral processing device, and a first edge information acquisition step and a cup mounting step are carried out. A method is implemented that performs a processing control data acquisition step of acquiring processing control data based on the processing step and a processing step of processing the processing tool to control the processing tool to process the spectacle lens held by the lens holding unit based on the processing control data. May be

  In such an eyeglass lens processing method, a finishing position setting step may be performed to set a finishing position of the edge based on the first edge information of the eyeglass lens. In this case, the holding step holds the eyeglass lens attached with the cup in the lens holding means of the lens edge processing apparatus after the processing position setting step and the cup mounting step are performed, and the processing control data acquisition step performs the processing After the position setting step and the cup attachment step are performed, processing control data may be acquired based on the finishing position.

  In such a spectacle lens processing method, after the holding step is performed, a second edge information acquisition step of acquiring second edge information at at least one radial angle of the spectacle lens may be performed. In this case, the processing control data acquisition step may acquire the processing control data based on the first edge information, the second edge information, and the finishing position.

  The technique of the present disclosure may be applied to a lens processing device for processing an eyeglass lens, in addition to the centering device. In this case, it is an apparatus for lens processing which is different from the lens edge processing apparatus for processing an eyeglass lens, and the processing process is performed before the eyeglass lens is held by the lens holding means provided in the lens edge processing apparatus. The lens processing apparatus may further include edge information acquisition means for acquiring edge information which is information regarding an edge of the spectacle lens. For example, such a lens processing device may be a lens meter. Moreover, such an apparatus for lens processing may be a spectacles frame shape measuring apparatus.

<Example>
Embodiments of the present disclosure will be described using the drawings. In this embodiment, a cup mounting device for mounting the cup Cu on which the lens chuck shaft is mounted to the lens LE will be exemplified as the centering device. However, at least a part of the technique exemplified in the present embodiment can be applied to devices other than the cup attachment device. For example, as the centering device, at least a part of the technique exemplified in this embodiment is applied to a device that holds the lens LE on the lens chuck shaft without the cup Cu at the set centering position. it can.

  In the present embodiment, although the above-described centering device is described as an example, at least a part of the techniques exemplified in the present embodiment is not limited to the case where it is applied to the centering device. For example, at least a part of the technique exemplified in the present embodiment is applicable to a lens processing device used to process a lens in a process before the lens is held by the lens holding means. In this case, it is an apparatus for lens processing which is different from the lens edge processing apparatus for processing an eyeglass lens, and the processing process is performed before the eyeglass lens is held by the lens holding means provided in the lens edge processing apparatus. The lens processing apparatus may further include edge information acquisition means for acquiring edge information which is information regarding an edge of the spectacle lens. For example, such a lens processing device may be a lens meter. Moreover, as such an apparatus for lens processing, you may be a spectacles frame shape measuring apparatus. Of course, the lens processing device may be provided with a finishing position setting means for setting the finishing position.

  FIG. 1 is an external view of the cup mounting device 1. The cup attachment device 1 includes a display (monitor) 2, an input button 3, a lens support mechanism 10, a frame shape measurement mechanism 20, a cup attachment mechanism 30, a lens information measurement mechanism 40, an image data acquisition mechanism 60, and the like. For example, the display 2 may be at least one of an LCD (Liquid Crystal Display), an organic EL (Electro Luminescence) display, a plasma display, and the like. For example, the display 2 is a touch panel. That is, the display 2 has an operation unit (input button 3) for inputting signals and parameters for causing the cup attachment device 1 to execute various processes, various information (for example, input parameters, optical characteristics of the lens LE) , And a display unit for displaying edge information of the lens LE, and the like. The display 2 and the operation unit may be separately provided. In this case, at least one of a mouse, a joystick, a keyboard, a portable terminal, and the like may be used as the operation unit.

<Lens support mechanism>
FIG. 2 is a schematic configuration view of the lens support mechanism 10. The lens support mechanism 10 is used to place the lens LE with the surface (front surface) of the lens LE facing upward. For example, the lens support mechanism 10 includes a cylindrical base 11, a ring member 12, a protective cover 13, a support pin 14, a rotating shaft 15, an arm 16, and the like. A protective cover 13 attached to the ring member 12 is installed on the top of the cylindrical base 11. Inside the cylindrical base 11, a target plate 46 and the like, which will be described later, are disposed. A rotating shaft 15 is disposed on the outer peripheral portion of the cylindrical base 11. Arms 16 are attached to the upper ends of the rotating shafts 15 respectively. A support pin 14 is disposed at the tip of the arm 16. In the present embodiment, the support pins 14 are disposed equidistantly and equiangularly with respect to the optical axis L1. The support pin 14 holds the lens by abutting on the back surface (rear surface) of the lens LE.

  For example, the rotation shaft 15 rotates about an axis centered on the central axis K1 via a rotation transmission mechanism (not shown) that transmits the rotation of a motor or the like. For example, in conjunction with the rotation of the rotation shaft 15, the arm 16 and the support pin 14 move from the retracted position shown by the solid line to the support position shown by the dotted line. Thus, the distance between the optical axis L1 and the support pins 14 and the distance between the support pins 14 can be adjusted, and the size of the area that can be supported by the support pins 14 can be changed.

  Further, for example, the cylindrical base 11 rotates about an axis centered on the optical axis L1 via a rotation transmission mechanism configured by the motor 17 and a gear mechanism (not shown). For example, the rotation of the motor 17 is transmitted to the cylindrical base 11 by a gear mechanism (not shown). For example, in conjunction with the rotation of the cylindrical base 11, the rotation shaft 15, the arm 16 attached to the rotation shaft 15, and the support pin 14 disposed on the arm 16 move integrally around the ring member 12 Do. Thus, the lens LE placed on the support pin 14 can be rotated.

<Frame shape measurement mechanism>
For example, the frame shape measuring mechanism 20 is used when tracing the shape of the eyeglass frame (hereinafter referred to as a frame). Thus, the inner circumferential shape of the frame (in other words, the lens shape of the lens LE described later) or the like can be obtained. For the configuration of the frame shape measuring mechanism 20, see, for example, JP-A-2015-31847.

<Cup mounting mechanism>
FIG. 3 is a schematic configuration view of the cup attachment mechanism 30. As shown in FIG. The cup attachment mechanism 30 is used to attach the cup Cu to the surface (front surface) of the lens LE. That is, the cup attachment mechanism 30 is used to fix (spin) the cup Cu on the surface of the lens LE. In the present embodiment, the fixed position of the cup is the surface of the lens LE, but the present invention is not limited to this. The fixed position of the cup may be the back surface (rear surface) of the lens.

  For example, in the present embodiment, the cup attachment mechanism 30 is an axial position, which is an attachment position of the lens holding unit 100 (see FIG. 11) that holds the lens LE in order to process the periphery of the lens LE. Set For example, the cup attachment mechanism 30 relatively changes the positions of the cup Cu attached to the attachment portion 31 described later and the lens LE supported by the lens support mechanism 10, whereby the surface of the lens LE is changed. Install the cup Cu in the proper position. As a result, the lens chuck shafts 102L and 102R (see FIG. 11) of the lens edge processing apparatus 90 can hold the appropriate position (the position where the cup Cu is attached) in the lens LE. The centering position may be set to the optical center position O (see FIG. 6) of the lens LE, or may be set to the geometric center position. Of course, a position different from the above may be set as the centering position. For example, in the present embodiment, the centering position is set to the optical center position O of the lens LE.

  For example, the cup mounting mechanism 30 includes a mounting portion 31, an arm 32, an arm holding base 33, an X direction moving mechanism 35, a Y direction moving mechanism 36, a Z direction moving mechanism 37, and the like. For example, the mounting unit 31 is fixed to the arm 32. For example, the mounting portion 31 is fitted with the uneven portion formed in the cup Cu. For example, the arm 32 includes a rotation transmission mechanism (not shown) for holding the rotation angle of the mounting portion 31 in the horizontal direction variably. For example, the arm 32 is attached to the arm holding base 33. For example, the arm holding base 33 includes a motor 34. For example, the rotation of the motor 34 is transmitted to the mounting unit 31 via a rotation transmission mechanism (not shown) of the arm 32. That is, when the motor 34 rotates, the mounting portion 31 rotates about the central axis K1 of the cup Cu. This makes it possible to change the rotation angle of the cup Cu in the horizontal direction.

  For example, the X-direction moving mechanism 35 moves in the left-right direction (X direction) of the cup mounting device 1. For example, the Y-direction moving mechanism 36 is installed on the top of the X-direction moving mechanism 35. For example, the Y-direction moving mechanism 36 moves in the vertical direction (Y direction) of the cup mounting device 1. For example, the Z direction moving mechanism 37 is installed on the top of the Y direction moving mechanism 36. For example, the Z-direction moving mechanism 37 moves in the front-rear direction (Z direction) of the cup mounting device 1. For example, the Z-direction moving mechanism 37 holds the arm 32, the arm holding base 33, and the motor 34. For example, in the present embodiment, by moving the X-direction moving mechanism 35, the Y-direction moving mechanism 36, the Z-direction moving mechanism 37, the arm 32, etc. move in the left-right direction with respect to the cup mounting device 1. Also, for example, by moving the Z-direction moving mechanism 37, the arm 32 and the like move in the front-rear direction with respect to the cup mounting device 1. Thus, the mounting portion 31 held by the arm 32 moves to the upper portion of the lens support mechanism 10. Furthermore, for example, by moving the Y-direction moving mechanism 36, the Z-direction moving mechanism 37, the arm 32 and the like move in the vertical direction with respect to the cup mounting device 1. As a result, the cup Cu mounted on the mounting portion 31 is pivoted on the front surface of the lens LE mounted on the support pin 14.

<Lens Information Measurement Mechanism>
FIG. 4 is a schematic configuration view of a lens information measurement mechanism 40 provided in the cup attachment device 1. For example, the lens information measurement mechanism 40 in the present embodiment includes a measurement optical system for acquiring the optical characteristics of the lens, and information of the lens different from the optical characteristics of the lens (for example, the outer shape of the lens, the mark attached to the lens And a measurement optical system for acquiring a hidden mark formed on the lens, and the like. The measurement optical system for acquiring the optical characteristic of the lens and the measurement optical system for acquiring information of the lens different from the optical characteristic of the lens may be separately provided.

  For example, the lens information measurement mechanism 40 includes an illumination optical system 41, a light reception optical system 45, an imaging optical system 48, and the like. For example, the illumination optical system 41 includes a light source 42, a half mirror 43, a concave mirror 44, and the like. For example, the light source 42 irradiates a measurement light beam to the lens. For example, the light source 42 may be a light emitting diode (LED). For example, the measurement light beam emitted from the light source 42 is reflected by the half mirror 43 disposed on the optical axis L2, and coincides with the optical axis L2. For example, the concave mirror 44 reflects the measurement light flux from the optical axis L1 to the direction of the optical axis L2, and also measures a parallel light flux having a diameter larger than that of the lens LE disposed on the optical axis L1 (approximately parallel light flux) Format. Although it is possible to use a lens instead of the concave mirror, it is advantageous to use a concave mirror in order not to increase the size of the device.

  For example, the light receiving optical system 45 includes a target plate 46, an imaging device 47, and the like. For example, the target plate 46 is used to detect the optical center or the like of the lens LE. The details of the target plate 46 will be described later. For example, the imaging device 47 captures an image of the measurement light beam that has been emitted from the light source 42 and has passed through the lens LE and the target plate 46. For example, the imaging device 47 may be a charge coupled device (CCD), a complementary metal oxide semiconductor (CMOS), or the like. The light receiving optical system 45 in the present embodiment may have a configuration in which a lens is disposed between the index plate 46 and the imaging device 47.

  For example, the imaging optical system 48 includes a concave mirror 44, an aperture 49, an imaging lens 50, an imaging element 51, and the like. For example, the imaging magnification of the imaging optical system 48 is a magnification at which the whole of the lens LE is imaged by the imaging element 51. For example, the concave mirror 44 in the imaging optical system 48 is shared with the concave mirror 44 in the illumination optical system 41. For example, the stop 49 is disposed at the focal position (approximately the focal position) of the concave mirror 44. For example, the diaphragm 49 has a positional relationship that is conjugate (substantially conjugate) with the light source 42. For example, the imaging device 51 captures an image of the reflected light beam emitted from the light source 42 and reflected by the retroreflective member 52 described later. For example, the imaging device 51 may be a charge coupled device (CCD), a complementary metal oxide semiconductor (CMOS), or the like. For example, the focus position of the imaging element 51 is adjusted by the imaging lens 50 and the concave mirror 44 near the surface of the lens LE. As a result, it is possible to capture an image of a mark on the surface of the lens, a hidden mark formed on the lens, and the like in a substantially in-focus state.

<Target board>
FIG. 5 shows an example of the target plate 46. For example, a large number of openings (passages for light flux) 55 are formed in the target plate 46 in a predetermined pattern. For example, in the present embodiment, the opening 55 is formed by attaching a retroreflective member 52 described later to a region other than the opening 55 (that is, a region indicated by oblique lines in FIG. 5). Further, for example, in the present embodiment, the circular openings 55 are arranged at equal intervals. The target plate 46 may be formed with a pattern capable of detecting the optical center and optical characteristics of the lens LE, and the shape and the interval of the openings 55 are not limited to those of the present embodiment.

  For example, the opening 55 includes a central hole 56 formed at the center of the target plate 46 and a peripheral hole 57 formed at the periphery of the central hole 56. For example, the central hole 56 coincides with the optical axis L1. For example, the central hole 56 in the present embodiment can be distinguished from the peripheral hole 57 by having a size different from that of the peripheral hole 57. The size, number, shape, position, etc. of the central holes 56 may be different from those of the present embodiment, as long as they can be distinguished from the peripheral holes 57. Thus, when the image of the opening 55 (hereinafter referred to as an aperture image) captured by the imaging device 47 is displaced by the optical characteristics of the lens LE, the correspondence of the peripheral holes 57 can be specified. More specifically, an image of the peripheral hole 57 captured in a state in which the lens LE is not mounted on the support pin 14 is imaged in a state in which the lens LE is mounted on the support pin 14 It is possible to identify which of the images corresponds.

  For example, the retroreflective member 52 is used to reflect the measurement light beam in the same direction (substantially the same direction) as the incident direction. For example, the retroreflective member 52 is attached to the upper surface of the target plate 46 and the upper surface of the disk member 54 having the opening 53 at the center. For example, the disk member 54 may be rotated about an axis centered on the optical axis L1 by a rotation mechanism (not shown). For details of the retroreflective member 52 and the rotation mechanism thereof, see, for example, Japanese Patent Laid-Open No. 2008-299140.

<Image data acquisition mechanism>
FIG. 6 is a schematic block diagram of the image data acquisition mechanism 60. As shown in FIG. The image data acquisition mechanism 60 acquires cross-sectional image data 75 including front image data P1s on the front surface of the lens LE and back surface image data Q2s on the back surface of the lens LE (see FIG. 9). For example, in the present embodiment, the image data acquisition mechanism 60 may be provided with a projection optical system 64 for projecting the measurement light beam toward the front surface or the rear surface of the lens LE. Also, for example, in the present embodiment, the image data acquisition mechanism 60 receives the first reflected light flux R1 reflected by the front surface of the lens LE and the second reflected light flux R2 reflected by the back surface of the lens LE. A light receiving optical system 66 may be provided. That is, the image data acquisition mechanism 60 in the present embodiment acquires cross-sectional image data 75 including front image data P1s formed by the first reflected light beam R1 and back surface image data Q2s formed by the second reflected light beam. can do.

  The image data acquisition mechanism 60 includes a measurement optical system 61, a Y-direction moving mechanism 62, a Z-direction moving mechanism 63, and the like. For example, the measurement optical system 61 in the present embodiment is configured to acquire the cross-sectional image data 75 of the lens LE by the light projection optical system 64 and the light reception optical system 66 based on the principle of the Shine Pluke. Of course, the measurement optical system 61 may use an optical system having a different configuration instead of an optical system based on the principle of Shine Pluke.

  The projection optical system 64 projects the measurement light flux toward the front or back of the lens LE. For example, the projection optical system 64 may project the measurement light flux perpendicularly to the lens LE. In this case, the optical axis L3 of the projection optical system 64 is perpendicular to the lens LE. In addition, for example, the projection optical system 64 may project the measurement light beam at a predetermined inclination angle with respect to the lens LE. For example, in the present embodiment, a configuration in which the light projecting optical system 64 vertically projects the measurement light flux toward the front of the lens LE will be described as an example. In this case, the measurement light flux may be irregularly reflected on the front surface of the lens LE.

  The projection optical system 64 includes a light source 65. The light source 65 directs the measurement light beam to the lens LE. For example, the light source 65 may be an LED, a laser, or the like. The light projecting optical system 64 in the present embodiment may have a configuration in which a lens is disposed between the light source 65 and the lens LE. In addition, the light projecting optical system 64 in the present embodiment may have a configuration in which a pinhole is disposed between the light source 65 and the lens LE.

  The light receiving optical system 66 receives the first reflected light flux R1 reflected by the front surface of the lens LE and the second reflected light flux R2 reflected by the rear surface of the lens LE. For example, the optical axis L4 of the light receiving optical system 66 is disposed at a predetermined inclination angle with respect to the optical axis L3 of the light projecting optical system 64. The light receiving optical system 66 includes a lens 67, an aperture 68, an imaging element 69, and the like. The lens 67 condenses the reflected light flux (for example, the specular reflected light of the lens LE, the scattered light of the lens LE, etc.) reflected by the front surface and the back surface of the lens LE at the position of the stop 68. The stop 68 is located at the focal length of the lens 67. Further, in the stop 68, even if the distance between the light receiving optical system 66 and the lens LE changes, the size of the image of the first reflected light flux R1 and the second reflected light flux R2 captured by the imaging device 69 does not change (that is, The imaging magnification is fixed). The imaging device 69 may be a two-dimensional imaging device (for example, at least one of a CCD, a CMOS, and the like) or a one-dimensional imaging device (for example, a line sensor and the like). The imaging element 69 is disposed at a position conjugate to the lens LE. The imaging element 69 may be arranged such that its light receiving surface is perpendicular to the optical axis L4. The lens 67 and the image pickup device 69 are disposed on the optical axis L4 based on the principle of Shine Pluke. For example, the measurement light beam irradiated onto the lens LE by the light projection optical system 64, the lens system including the lens LE and the lens 67, and the light receiving surface of the image sensor 69 (that is, the imaging position) Be placed.

  For example, the measurement light beam irradiated to the lens LE is branched into a reflected light beam reflected on the front surface of the lens LE and a measurement light beam directed to the rear surface of the lens LE. The measurement luminous flux is reflected in various directions on the front surface of the lens LE, but the reflected luminous flux (that is, the first reflected luminous flux R1) reflected parallel to the optical axis L4 passes through the lens 67 and the diaphragm 68 to the imaging device 69. To reach. The measurement light flux directed to the back surface of the lens LE is reflected in various directions on the back surface of the lens LE, but the reflected light flux reflected in parallel to the optical axis L4 (that is, the second reflected light flux R2) The image sensor 69 is reached via the point 67 and the aperture 68. For example, in this manner, the imaging element 69 can capture an image of the first reflected beam and the second reflected beam reflected at the same angle on the front surface and the rear surface of the lens LE.

  In the present embodiment, the measurement light flux reflected in parallel with the optical axis L4 is guided to the imaging element 69 using the stop 68, but the invention is not limited to this. For example, the stop 68 may guide the measurement light flux not reflected in parallel to the optical axis L4 to the imaging element 69.

  The Y-direction moving mechanism 62 adjusts the imaging position of the imaging element 69 by adjusting the position of the measurement optical system 61 in the vertical direction (Y direction). For example, the Y-direction moving mechanism 62 integrally moves the light projecting optical system 64 and the light receiving optical system 66 in the Y direction. For example, the Y-direction moving mechanism 62 may be configured by a motor and a slide mechanism. The Z direction moving mechanism 63 adjusts the position of the measurement light beam irradiated from the light source 65 toward the lens LE by adjusting the position of the measurement optical system 61 in the front-rear direction (Z direction). For example, the Z-direction moving mechanism 63 integrally moves the light projecting optical system 64 and the light receiving optical system 66 in the front-rear direction (Z direction). For example, the Z-direction moving mechanism 63 may be configured by a motor and a slide mechanism. In the embodiment, the configuration in which the light projecting optical system 64 and the light receiving optical system 66 move integrally is described as an example, but the present invention is not limited to this. For example, the light projecting optical system 64 and the light receiving optical system 66 may be moved separately.

  For example, by providing the Y-direction moving mechanism 62, the image data acquisition mechanism 60 can acquire cross-sectional image data 75 (see FIG. 9) corresponding to the lenses LE with various edge thicknesses t (hereinafter, edge thickness t). It will be. FIG. 12 is a view for explaining the Y-direction moving mechanism 62 when the edge thickness t of the lens LE is different. FIG. 12A is a view showing a reflected light beam when the edge of the lens LE is thin. FIG. 12B is a view showing a reflected light beam when the edge of the lens LE is thick. FIG.12 (c) is a figure which shows a reflected light beam at the time of adjusting the imaging position of the image pick-up element 69 from the state shown in FIG.12 (b).

  For example, the distance W between the first reflected light flux R1 reflected by the front surface of the lens LE and the second reflected light flux R2 reflected by the back surface of the lens LE varies with the edge thickness t of the lens LE. For example, the distance W between the first reflected light flux R1 and the second reflected light flux R2 is wider in the lens LE where the edge is thicker than in the lens LE where the edge is thin. For example, as shown in FIGS. 12A and 12B, if the measurement optical system 61 is in a fixed arrangement, the first reflected beam R1 and the second reflected beam R2 may be selected depending on the edge thickness t of the lens LE. There are cases in which both do not reach the light receiving surface of the image sensor 69. For example, in FIG. 12B, the second reflected light flux R2 is out of the light receiving surface of the imaging element 69. Therefore, the Y-direction moving mechanism 62 is driven to adjust the imaging position of the imaging element 69 so that both the first reflected luminous flux R1 and the second reflected luminous flux R2 reach the light receiving surface of the imaging element 69. For example, in the present embodiment, the Y-direction moving mechanism 62 moves the measurement optical system 61 in the direction approaching the lens LE. As a result, the first reflected light flux R1 and the second reflected light flux R2 reach the light receiving surface of the image sensor 69 as shown in FIG. 12C. Further, as a result, the image data acquisition mechanism 60 includes the cross-sectional image data 75 including the front image data P1s formed by the first reflected light flux R1 and the back surface image data Q2s formed by the second reflected light flux (FIG. Reference) can be obtained.

  In the case where the measurement optical system 61 is in a fixed arrangement, even if the edge of the lens LE is thin, if the curve value of the lens LE is large, both the first reflected light flux R1 and the second reflected light flux R2 It may not reach the light receiving surface. Even in such a case, cross-sectional image data 75 including front image data P1s and rear surface image data Q2s can be acquired by adjusting Y-direction moving mechanism 62 to adjust the imaging position of imaging element 69. It will be.

  Also, for example, the image data acquisition mechanism 60 (see FIG. 6) includes the Z-direction moving mechanism 63 to direct the measurement light flux from the projection optical system 64 toward the position based on the lens shape TG of the lens LE. Can be irradiated. The position based on the lens shape of the lens LE may be a position coincident with the lens shape, or a position calculated based on the lens shape (for example, the position of the bevel at each radius vector angle, The position of the chamfer at the radial angle, etc.) may be used. For example, in the present embodiment, the lens LE mounted on the support pin 14 is rotated in the horizontal direction by the rotation of the cylindrical base 11 (see FIG. 2), and the Z direction moving mechanism 63 By moving the lens LE in the radial length direction, the measurement light beam is irradiated to a position based on the lens shape TG of the lens LE. Thus, the image data acquisition mechanism 60 can acquire the cross-sectional image data 75 based on the lens shape of the lens LE.

<Control system>
FIG. 7 is a schematic configuration diagram of a control system provided in the cup mounting device 1. The control unit 70 includes a CPU (processor), a RAM, a ROM, and the like. For example, the CPU of the control unit 70 controls the cup mounting device 1. The RAM of the control unit 70 temporarily stores various types of information. The ROM of the control unit 70 stores various programs to be executed by the CPU.

  For example, in the control unit 70, the display 2, the input button 3, the motor 34, the light source 42, the light source 65, the imaging device 47, the imaging device 51, the imaging device 69, the non-volatile memory 71 (hereinafter, memory 71), etc. Connected. Further, for example, the control unit 70 is connected to a motor (not shown) provided in each of the X-direction moving mechanism 35, the Y-direction moving mechanism 36, and the Z-direction moving mechanism 37 included in the cup attachment mechanism 30. Further, for example, the control unit 70 is connected to a motor (not shown) and the like provided with each of the Y-direction moving mechanism 62 and the Z-direction moving mechanism 63 which the image data acquisition mechanism 60 has.

  For example, as the memory 71, a non-transitory storage medium capable of retaining stored contents even when the supply of power is shut off may be used. For example, as the memory 71, a hard disk drive, a flash ROM, a USB memory, or the like can be used. For example, in the memory 71, the optical characteristics of the lens LE measured by the lens information measurement mechanism 40, the cross-sectional image data of the lens LE acquired by the measurement optical system 61, and the inner circumferential shape of the frame traced using the frame shape measurement mechanism 20. , Etc. may be stored.

<Control action>
The control of the cup mounting device 1 having the above configuration will be described. The operator processes the lens LE by using the cup attaching device 1 and the lens peripheral edge processing device when manufacturing the glasses. Here, conventionally, the cup attaching device 1 has been used to attach the cup Cu to the surface of the lens LE. Also, conventionally, in order to acquire edge information of the lens LE, to set a finishing position (for example, position of a bevel, position of a groove, position of chamfering, etc.) formed on an edge of the lens LE, and A lens edge processing apparatus has been used to process the edge of the lens. In such a series of operations, it was found that the time for using the lens rim processing device was significantly longer than the time for using the cup mounting device 1. The operator may want to carry out the work efficiently but may not be able to proceed to the next step because the lens edge processing apparatus is in use even if the attachment of the cup Cu to the lens LE is completed. The

  Therefore, in the present embodiment, the cup attaching device 1 is used to attach the cup Cu to the lens LE, obtain edge information, and finish so that the operator waits for the lens edge processing apparatus to be idled. The processing position is set, and processing of the peripheral edge of the lens LE is performed using the lens peripheral processing device. Hereinafter, steps S1 to S8 will be described in order based on the flowchart shown in FIG. For example, in the present embodiment, steps from step S1 to step S7 are performed using the cup attachment device 1, and steps S8 to S12 are performed using the lens peripheral edge processing device.

<Cup mounting device>
For example, the operator activates the cup attachment device 1 and sequentially performs the steps described below.

<Acquisition of ball shape (S1)>
First, the control unit 70 acquires the lens shape of the lens LE. The lens shape of the lens LE may be the outer peripheral shape of the demo lens, the inner peripheral shape of the frame, or the like. For example, when acquiring the outer peripheral shape of the demo lens, the outer peripheral shape may be detected by capturing the entire image of the demo lens using the lens information measurement mechanism 40. Further, for example, when acquiring the inner peripheral shape of the frame, the inner peripheral shape may be detected by tracing the frame using the frame shape measuring mechanism 20. Of course, the cup shape of the lens LE acquired using another device may be read into the cup attachment device 1. For example, the control unit 70 stores the lens shape of the lens LE acquired in this manner in the memory 71. The lens shape of the lens LE may be obtained for each of the left lens and the right lens. The lens shape of one of the left lens and the right lens may be acquired, and the other lens shape may be acquired by inverting the left and right.

<Acquisition of refractive index (S2)>
Subsequently, the control unit 70 acquires the refractive index of the lens LE. The refractive index of the lens LE may be obtained by the operator operating the input button 3. For example, since the refractive index is determined by the material of the lens LE (for example, plastic, glass, etc.) (that is, the refractive index is determined by the lens LE to be processed), the operator inputs a known refractive index It is also good. The operator may also input the refractive index of the lens LE acquired in advance using another device. The cup attachment device 1 may have a configuration capable of measuring the refractive index of the lens LE, and the refractive index may be obtained using this. For example, the control unit 70 stores the refractive index of the lens LE acquired in this manner in the memory 71.

<Setting of processing conditions and layout (S3)>
For example, when acquiring the lens shape and refractive index of the lens LE, the control unit 70 causes the display 2 to display the lens shape. The operator may operate the input button 3 to set processing conditions of the lens LE for each of the left lens and the right lens. For example, the processing conditions of the lens LE are the type of the lens LE (for example, monofocal lens, bifocal lens, progressive lens, etc.), the material of the lens LE, the material of the frame, various processing (for example, mirror surface processing, chamfering processing And / or grooving, etc., and the attachment position of the cup Cu to the lens LE (for example, the optical center position of the lens LE, the geometric center position of the lens, etc.), and the like. The operator may also operate the input button 3 to set the layout of the lens LE. For example, the layout of the lens LE may be at least one of a distance between frame centers, a distance between pupils of the spectacle wearer, and an astigmatic axis angle of the spectacle wearer.

<Axial strike (S4)>
After setting the processing conditions and the layout of the lens LE, the operator mounts the lens LE (for example, the left lens in the present embodiment) on the support pin 14 and attaches the cup Cu to the mounting portion 31. Also, the operator operates the mode selection button (not shown) to switch from the setting mode to the axial driving mode. When the axial driving mode is selected, the control unit 70 turns on the light source 42 provided in the lens information measurement mechanism 40. Further, the display 2 displays guide marks serving as targets for aligning the optical center position (that is, an optical center mark described later) of the lens LE mounted on the support pins 14 with the optical axis L1. .

  For example, the control unit 70 obtains position coordinates of the aperture image captured by the imaging element 51, and based on this, the optical center position and optical characteristics of the lens LE (for example, spherical power, cylindrical power, astigmatic axis angle, etc.) To detect The detection of the optical center position and the optical characteristics of the lens LE using the aperture image is based on the application of a known technique, so refer to Japanese Patent Application Laid-Open No. 2008-241694 for details. For example, an optical center mark is displayed at the optical center position O of the lens LE detected by the control unit 70.

  Further, for example, the control unit 70 performs image processing on the image of the lens LE captured by the imaging device 51 to detect the outer shape of the lens LE. For example, on the display 2, the lens shape of the lens LE is superimposed and displayed on the outer shape of the lens LE. At this time, the lens shape of the lens LE is determined by the optical center position O of the lens LE, the layout data of the lens LE, the imaging magnification of the imaging optical system 48, the positional relationship of the optical axis L2 with respect to the optical axis L1, etc. And the display size may be determined.

  For example, the operator moves the lens LE so as to align the optical center mark with the guide mark while looking at the display 2, and operates an unshown unillustrated button displayed on the display 2. The control unit 70 drives the X-direction moving mechanism 35 and the Y-direction moving mechanism 36 of the cup mounting mechanism 30 so that the central axis K2 of the cup Cu is positioned at the optical center position O of the lens LE according to the operation signal. And move the arm 32. At this time, when the lens LE has a cylindrical dioptric power, the mounting portion 31 may be rotated about the central axis K2 based on the detected astigmatic axis angle. When the position adjustment and the angle adjustment of the cup Cu are completed, the control unit 70 drives the Z-direction moving mechanism 37 to lower the arm 32. Thus, the cup Cu mounted on the mounting portion 31 is pivoted to the front surface of the lens LE mounted on the support pin 14 based on the set centering position (that is, the optical center position O of the lens LE). Be beaten.

<Acquisition of cross-sectional image data (S5)>
For example, the operator operates the mode selection button (not shown) to switch from the axial driving mode to the edge information measuring mode after finishing axial driving of the cup Cu. For example, in this embodiment, the edge information of the lens LE placed on the lens support mechanism 10 is measured. When the edge information measurement mode is selected, the control unit 70 turns on the light source 65 provided in the image data acquisition mechanism 60.

  For example, the control unit 70 controls the drive of the Z-direction moving mechanism 63 to make the optical axis L3 coincide with the initial position on the lens shape TG on the lens LE. For example, the initial position may be a position on an imaginary line V1 extending in the Z direction through the optical center position O of the lens LE, or an imaginary line V2 extending in the X direction through the optical center position O of the lens LE It may be at the upper position. Of course, the initial position may be set to any position. For example, in the present embodiment, the optical axis L3 coincides with a point P1 which is a position on the imaginary line V1 on the lens shape TG of the lens LE. Thereby, the measurement light beam emitted from the light source 65 is a first reflected light beam R1 reflected at the point P1 on the front surface of the lens LE, and a second reflected light beam R2 reached to the point Q1 on the back surface of the lens LE and reflected Branch to

  Also, for example, the control unit 70 controls the driving of the Y-direction moving mechanism 62 so that the image sensor 69 can receive both the first reflected light beam R1 and the second reflected light beam R2, the image data acquisition mechanism 60. The distance between the lens and the lens LE in the Y direction is adjusted. For example, the control unit 70 performs image processing (for example, edge detection and the like) on the cross-sectional image data 75 (see FIG. 9) captured by the imaging element 69, and detects the rise of the luminance. Also, for example, when the rising of the luminance appears twice, the control unit 70 generates an image of the first reflected light beam R1 (that is, front image data P1s of the lens LE described later) and an image of the second reflected light beam R2 That is, it is determined that both of the rear surface image data Q2s of the lens LE described later have been detected, and the driving of the Y direction moving mechanism 62 is ended. Thus, the control unit 70 can acquire the cross-sectional image data 75 of the position of the point P1 in the lens shape TG of the lens LE.

  FIG. 9 is an example of the cross-sectional image data 75. For example, the cross-sectional image data 75 includes front image data of the lens LE formed by the first reflected light flux R1 and back surface image data of the lens LE formed by the second reflected light flux R2. For example, in the present embodiment, the image of the point P1 on the front surface of the lens LE is the front image data P1s of the lens LE. Also, for example, in the present embodiment, the image of the point Q2 which is not the image of the point Q1 on the back surface of the lens LE but the extended line of the second reflected light beam R2 (that is, on the dotted line shown in FIG. 7) Back surface image data Q2s. This is because the lens LE has a predetermined refractive index, and the second reflected light beam R2 is bent at the front surface of the lens LE and reaches the imaging element 69. In the imaging element 69, the position of the point Q1 on the rear surface of the lens LE appears to be at the position of the point Q2.

  For example, when the control unit 70 acquires the cross-sectional image data 75 at the initial position (that is, the point P1) on the lens LE, the control unit 70 drives the motor 17 to rotate the cylindrical base 11 to place the lens mounted on the support pin 14 Rotate LE one turn horizontally. Further, for example, the control unit 70 controls the Y-direction moving mechanism 62 to adjust the first reflected light flux R1 to always reach the same position with respect to the light receiving surface of the imaging element 69. Further, for example, the control unit 70 controls the Z-direction moving mechanism 63 based on the lens shape TG of the lens LE to correspond to the lens shape of the lens LE (for example, points P2, P3 shown in FIG. The light axis L3 is made to coincide with P4, ..., Pn). For example, the point corresponding to the lens shape may be a point at an interval of a predetermined angle (for example, 0.5 degree, 1 degree, etc.) centering on the optical center position O, or arbitrary The number of points of (for example, 1000 points, etc.) may be used.

  For example, the control unit 70 controls the Z-direction moving mechanism 63 while rotating the lens LE in order to continuously acquire the cross-sectional image data 75 at each point on the radial angle in the lens shape of the lens LE. . Also, for example, the control unit 70 controls the Y-direction moving mechanism 62 while rotating the lens LE so that the front image data P1s of the lens LE is displayed at a predetermined position in the cross-sectional image data 75. FIG. 14 is a diagram for explaining control for displaying the front image data P1s at a predetermined position. For example, the control unit 70 detects the displacement amount Δd in the depth direction of the front surface image data P1 s of the lens LE and the predetermined position M (in other words, the vertical direction of the cross sectional image data 75) in the cross sectional image data 75 Do. Also, for example, the control unit 70 calculates the drive amount of the Y-direction moving mechanism 62 based on the detected deviation amount Δd, and moves the measurement optical system 61. As a result, the imaging position of the first reflected light flux R1 reaching the light receiving surface of the imaging element 69 is changed, and the front image data P1s coincides with the predetermined position M of the cross-sectional image data 75.

  For example, the control unit 70 detects the deviation amount Δd for all radius vector angles in the lens shape of the lens LE, and drives the Y direction moving mechanism 62 based on this. That is, every time the position at which the cross-sectional image data 75 is acquired on the lens LE is changed, the control unit 70 drives the Y-direction moving mechanism 62 to set the front image data P1s at the predetermined position M of the cross-sectional image data 75. To be displayed. In addition, for example, the control unit 70 specifies the front position (for example, position coordinates etc.) of each radius vector angle in the lens shape of the lens LE from the drive amount that drives the Y direction moving mechanism 62 based on the shift amount Δd. Do. For example, in this case, the front position of each radius vector angle may be specified by acquiring the number of pulses of the motor constituting the Y direction moving mechanism 62 or the like. For example, the control unit 70 rotates the lens LE one turn in the horizontal direction, and acquires cross-sectional image data of all radial angle points in the lens shape of the lens LE and the front position of the lens LE. , These are stored in the memory 71.

  In the present embodiment, the lens LE placed on the support pin 14 is rotated once, but it may be rotated any number of turns. For example, the lens LE placed on the support pin 14 may be rotated twice, and cross-sectional image data at the position of the bevel and the position of the chamfer calculated based on the lens shape of the lens LE may be acquired. For example, in this case, after the lens LE is made to make one rotation so that the optical axis L3 coincides with the position of the bevel on the lens LE by controlling the Z direction moving mechanism 63, the optical axis L3 is on the lens LE. The lens may be further rotated one round so as to coincide with the position of the chamfer (for example, a position at a predetermined distance from the position of the bevel).

<Acquisition of first edge information (S6)>
For example, the cup attachment device 1 may have an edge measurement mechanism for obtaining edge information of the lens LE. For example, the control unit 70 may measure the lens LE by controlling the edge measurement mechanism to acquire edge information. In this case, the control unit 70 may control the edge measurement mechanism based on the lens shape of the lens LE to acquire edge information. In the present embodiment, such an edge measurement mechanism is used as the image data acquisition mechanism 60 described above, and the control unit 70 acquires edge information as an example.

  For example, the control unit 70 acquires edge information (first edge information), which is information on the edge of the lens LE, for each of the acquired cross-sectional image data 75. For example, in the present embodiment, since the cross-sectional image data 75 based on the lens shape of the lens LE is acquired, it is possible to acquire edge information based on the lens shape of the lens LE. For example, as the edge information, the front surface position of the edge in the lens LE, the rear surface position of the edge, the edge thickness, and the like may be acquired. Of course, as the edge information, the front curve value and the rear curve value of the lens LE may be acquired. In the present embodiment, as an example of edge information of the lens LE, an edge thickness is obtained.

  For example, on the cross-sectional image data 75, the control unit 70 acquires position coordinates (for example, pixel coordinates and the like) of the front image data P1s and the back surface image data Q2s. Further, for example, the control unit 70 calculates an interval h between the front image data P1 s of the lens LE and the rear image data Q2 s of the lens LE, using the pixel coordinates of the front image data P1 s and the rear image data Q2 s. For example, in this case, the control unit 70 may calculate the number of pixels in the interval h by obtaining the difference between each pixel coordinate. Also, for example, in this case, the control unit 70 can convert the number of pixels in the interval h into an actual distance by setting in advance the actual distance per pixel of the imaging device 69.

  However, for example, in the cross-sectional image data 75, since the second reflected light flux is bent at the front surface of the lens LE as described above, the distance h between the front image data P1s and the rear surface image data Q2s of the lens LE is not necessarily the lens LE. It does not match the edge thickness t. Therefore, for example, the control unit 70 may acquire the edge thickness t of the lens LE based on the refractive index of the lens LE and the cross-sectional image data 75. For example, in the present embodiment, the control unit 70 determines the actual distance h between the front image data P1s of the lens LE and the rear image data Q2s acquired based on the cross-sectional image data 75 based on the refractive index of the lens LE. The edge thickness t of the lens LE is determined by performing correction. That is, in the present embodiment, the edge thickness of the lens LE is obtained by correcting the edge thickness obtained based on the cross-sectional image data based on the refractive index.

  For example, the control unit 70 can calculate the edge thickness t of the lens LE by correcting the actual distance h between the front image data P1 s and the rear image data Q2 s of the lens LE by using the following formula .

  Here, n is the refractive index of the lens LE, β is the imaging magnification of the light receiving optical system 66, and θ is the inclination angle of the optical axis L4 with respect to the front surface of the lens LE. The photographing magnification β and the inclination angle θ are known values in design. For example, the control unit 70 can obtain the edge thickness t of the lens LE by calling the refractive index n acquired in advance in step S2 from the memory 71 and calculating the above equation. For example, when the edge thickness t of the lens LE is thus obtained in each cross-sectional image data 75, the control unit 70 makes the memory 71 correspond to the position of each point on the radial angle in the lens shape of the lens LE. Remember to

  Since the front and back surfaces of the lens LE are curved, the measurement light beam emitted from the light source 65 is not necessarily perpendicular to the front surface of the lens LE. Therefore, the measurement light beam is irradiated obliquely to the front surface of the lens LE, and the measurement light beam traveling from the front surface to the back surface of the lens LE is bent at the front surface of the lens LE. Therefore, the edge thickness t of the obtained lens LE may be further corrected in consideration of the front curve value of the lens LE.

  For example, in this case, a table (conversion table) representing the relationship between the refractive index n of the lens LE and the front curve value is stored in the memory 71 in advance, and the control unit 70 calculates the corresponding coefficient to the edge thickness t of the lens LE. It may be multiplied by. Note that the front curve value of the lens LE may be obtained in advance using another device, and this may be read by the cup mounting device 1 or may be input by the operator. Of course, the front curve value of the lens LE may be determined by performing image processing on the cross-sectional image data 75 acquired using the cup mounting device 1.

  The equation used for calculation of the edge thickness t is not limited to this embodiment, and points of each radius vector angle from the refractive index n of the lens LE, the front curve value, and the optical center position O (for example, point P1 in FIG. 6) It may be an equation including as a parameter at least one of the distances D)).

  For example, when the operator completes axial hitting (step S4), acquisition of cross-sectional image data (step S5), and acquisition of edge information (step S6) for the left lens, these steps are similarly performed for the right lens. The order is sequentially performed to acquire an edge thickness t corresponding to the position of the lens shape of the lens LE.

<Setting of finishing position (S7)>
For example, when the edge thickness t is obtained, the control unit 70 switches the operation screen displayed on the display 2 to a simulation screen, and sets a finishing position. For example, the control unit 70 sets the finish processing position of the edge based on the acquired edge information (edge thickness t in the present embodiment). For example, the finish processing position of the edge is the position of the bevel formed on the edge, the position of the groove, the position of the chamfer, and the like. For example, such a finishing position may be automatically set (that is, initial setting) based on the acquired edge thickness t or may be adjusted by the operator. In the present embodiment, the case where the position of the bevel is set as the finish processing position of the edge is taken as an example.

  Further, for example, the control unit 70 displays the finishing position on the display 2 based on the edge thickness, and the finishing position is determined based on the operation signal from the input button 3 for adjusting the finishing position on the display. It may be set. In this case, the control unit 70 may display the position of the bevel of the left lens and the position of the bevel of the right lens in a comparable manner. In this case, the control unit 70 may set the finishing position of at least one of the left lens and the right lens based on the operation signal from the input button 3. By this, the position of the bevel (the apex position of the bevel) can be arranged in a well-balanced manner with respect to the respective rim thickness t in consideration of the difference in the rim thickness t of the left lens and the right lens.

  FIG. 10 shows an example of the simulation screen 80. FIG. 10A shows the entire simulation screen 80. As shown in FIG. FIG. 10B is an enlarged view of a part of the simulation screen 80. For example, on the simulation screen 80, the lens shape of the lens LE (the lens shape TGR of the left lens and the lens shape TGL of the right lens) is displayed. Further, on the simulation screen 80, the shape of the edge after beveling of the lens LE (the shape 81L of the edge of the left lens and the shape 81R of the edge of the right lens) is displayed. For example, on the lens shape of the lens LE, a cursor (cursor 82L and cursor 82R) moving on the lens shape by the operation of the operator is displayed. The operator can designate the observation direction of the edge of the lens LE by using the cursor, and can display the shape of the edge of the lens LE. Also, for example, on the simulation screen 80, an input for changing the curve value of the bevel curve of the lens LE (that is, the locus of arranging the bevel on the edge of the lens LE), the position in the longitudinal direction of the bevel curve, the inclination of the bevel curve, etc. A column 83 (input column 83L and input column 83R) is provided. In the present embodiment, the cross-sectional shape of the rim of the frame may be shown on the simulation screen 80 corresponding to the display positions of the bevel positions 84L and 84R.

  For example, the control unit 70 automatically sets the temporary position of the bevel formed on the lens LE. For example, the bevel curve may be a curve along the front curve of the lens LE. For example, the apex position of the bevel may be set to pass through the half of the thinnest portion based on the edge thickness t of the lens LE. For example, the control unit 70 sets the provisional position of the bevel in this manner for each of the left lens and the right lens. At this time, the control unit 70 may automatically adjust the temporary position of the bevel formed on the left and right lenses in consideration of the difference in edge thickness t of the left lens and the right lens. For example, in this case, the distance is the same for the distance BL from the apex position of the bevel in the left lens to the front surface of the lens LE and the distance BR from the apex position of the bevel in the right lens to the front surface of the lens LE It may be adjusted automatically to be Also, for example, in this case, the difference between the distance BL and the distance BR may be automatically adjusted so as to be equal to or less than a predetermined threshold. For example, the predetermined threshold may be set in advance by experiment or simulation.

  For example, the operator operates the determination button (not shown) when there is no problem at the temporary position of the bevel initialized in this manner. The control unit 70 creates bevel formation data for forming a bevel on the edge of the left lens and the right lens in accordance with the operation instruction, and stores the data in the memory 71. Also, for example, the control unit 70 transfers the created bevel formation data to the lens edge processing apparatus together with the front position of the lens LE.

  In addition, for example, the operator may manually adjust the provisional position of the initially set bevel. For example, the operator touches the display 2 to move the cursor 82L, and designates an arbitrary radial angle of the left lens. As a result, the operator can define an observation point that emphasizes the appearance of the positional relationship between the frame and the edge of the lens LE. Also, this allows the operator to compare the positional relationship between the front surface of the lens LE and the vertex position of the bevel between the left lens and the right lens. The cursor 82R may be automatically moved to a symmetrical position in synchronization with the cursor 82L.

  For example, the operator compares the shape 81L of the edge of the left lens and the shape 81R of the edge of the right lens, and the distance BL from the apex position of the bevel in the left lens to the front surface of the lens LE and the apex position of the bevel in the right lens And the distance BR from the front surface of the lens LE, respectively. For example, the vertex position of the bevel can be moved by the operator inputting an arbitrary value in the input field 83. For example, the control unit 70 changes the display positions of the bevel positions 84R and 84L in accordance with the input value. Also, for example, the operator may change the curve value or inclination of the bevel curve by inputting an arbitrary value in the input field 83. For example, in this case, the control unit 70 recalculates the position of the bevel corresponding to the input value, and changes the display positions of the positions 84L and 84R of the bevel. For example, as described above, the control unit 70 can set the temporary position of the bevel formed on the edge of the lens LE based on the operation signal input from the display 2 by the operator. For example, when the operator finishes adjusting the temporary position of the bevel, the operator operates a determination button (not shown). The control unit 70 creates bevel formation data for forming a bevel on the edge of the left lens and the right lens in accordance with the operation instruction, and stores the data in the memory 71. Also, for example, the control unit 70 transfers the created bevel formation data to the lens edge processing apparatus together with the front position of the lens LE.

<Lens edge processing device>
For example, when the operator sets the position of the bevel formed on the edge of the lens LE by the above operation using the cup attachment device 1, the operator processes the edge of the lens LE using the lens edge processing device. FIG. 11 is a schematic block diagram of the lens edge processing apparatus 90. As shown in FIG. For example, when the operator activates the lens edge processing apparatus 90, the control unit 95 included in the lens edge processing apparatus receives the aforementioned bevel formation data and the front position of the lens LE, and stores this in a memory (not shown) It is also good.

  For example, the lens edge processing apparatus 90 in the present embodiment processes the lens holding unit 100 that holds the lens LE by the lens chuck shaft 102, the edge information acquisition unit 200 for obtaining edge information of the lens LE, and the edge of the lens LE. Processing unit 300, and the like. The lens holding unit 100 includes a lens rotation unit 100a for rotating the lens LE, a chuck shaft moving unit 100b for moving the lens chuck shaft 102 in the X-axis direction, and a Y direction for the lens chuck shaft 102 An inter-axis distance variation unit 100c for moving to an inter-axial distance with the rotation axis in the unit 300). For a detailed configuration of the lens rim processing apparatus 90, see, for example, JP-A-2015-131374.

<Holding of lens (S8)>
For example, the operator holds the left lens by the lens chuck shafts 102L and 102R provided in the lens holding unit 100. For example, the rotation center axes K3 of the lens chuck shafts 102L and 102R and the center position of the cup Cu (in other words, the optical center position O of the lens LE) are designed to coincide with each other. Further, for example, the cup Cu is held so as to be in a fixed direction with respect to the rotation center axis K3. For example, in the present embodiment, the cup is made so that the virtual line V1 of the lens LE coincides with the Y direction of the lens edge processing apparatus 90 and the virtual line V2 of the lens LE coincides with the Z direction of the lens edge processing apparatus 90. Cu is retained. For this reason, the X direction in the cup attachment device 1 corresponds to the Z direction of the lens peripheral edge processing device 90. Further, the Y direction in the cup attachment device 1 corresponds to the X direction of the lens peripheral edge processing device 90. Further, the Z direction in the cup mounting device 1 corresponds to the Y direction of the lens peripheral edge processing device 90.

<Obtaining second edge information (S9)>
Also, for example, the operator operates the processing start button (not shown) to start processing of the periphery of the lens LE. First, the control unit 95 of the lens edge processing apparatus 90 controls the edge information acquisition unit 200 to provide edge information (second edge information) of at least one point of the vector angle on the front surface of the lens LE. To get For example, in the present embodiment, edge information of the point P1 on the virtual line V1 is acquired.

  For example, the control unit 95 causes the lens rotation unit 100a, the chuck shaft movement unit 100b, and the inter-axis distance fluctuation unit to contact the position of the point P1 on the lens LE with the probe 201 included in the edge information acquisition unit 200. The lens 100c is driven to move the lens LE held by the lens chuck shafts 102L and 102R. For example, the control unit 95 grasps the positions of the point P1 in the Y and Z directions with reference to the rotation center axis K3, and drives the lens rotation unit 100a and the inter-axis distance variation unit 100c. Further, for example, the control unit 95 drives the chuck shaft moving unit 100b, and moves the lens LE in the X direction until a sensor (not shown) provided on the probe 201 detects contact of the lens LE. For example, at this time, the control unit 95 detects the amount of movement of the lens chuck shafts 102L and 102R in the X direction from the initial position. This makes it possible to grasp where the lens LE is located in the lens chuck axial direction (that is, the X direction). That is, the position (that is, position coordinates) of the point P1 on the lens LE is grasped. The control unit 95 may slide the measuring element 201 on the lens LE to acquire edge information on one surface of the lens LE on the radial angle.

<Matching of position coordinates (S10)>
Here, for example, with respect to the position coordinate in the X direction at the point P1 of the lens LE acquired by the lens peripheral processing device 90, the control unit 95 detects the front position of each point in the lens LE acquired by the cup mounting device , Position coordinates of each point). For example, with this, the position coordinate of the lens periphery processing device 90 in the X direction is acquired for the point P2 or later on the lens LE. In addition, about the point P1 on the lens LE, the position coordinate of the X direction of the lens periphery processing apparatus 90 is acquired by step S9. Hereinafter, correspondence of position coordinates after the point P2 will be described.

  For example, the control unit 95 calls the front position (position coordinates) of each radius vector angle in the lens shape of the lens LE from the memory (not shown), and the radius of the lens LE based on the position coordinates of the point P1 on the lens LE. Position coordinates are associated with each corner. More specifically, for example, the position coordinates of the point P2 on the lens LE in the lens edge processing device 90 are the position coordinates of the point P1 obtained using the lens edge processing device 90 and the points obtained in the cup mounting device 1 It can be obtained by adding the position coordinates of P2. Also, for example, the position coordinates of the point P3 on the lens LE in the lens peripheral processing device 90 are acquired in the cup mounting device 1 and the position coordinates of the point P1 acquired as described above using the lens LE peripheral processing device 90. It can be obtained by adding the position coordinates of the point P3. For example, the control unit 95 detects the position coordinates of one point on the lens LE acquired using the edge information acquisition unit 200 included in the lens peripheral processing device 90 in this manner, and the image data acquisition mechanism included in the cup mounting device 1 The position coordinates of the point on each radial angle of the lens LE acquired using 60 are associated with each other. Thus, the bevel formation data created by the cup mounting device 1 can be made to correspond to the lens LE held by the lens chuck shaft 102.

<Acquisition of processing control data (S11)>
For example, the control unit 95 generates edge data (i.e., second edge information) of one point on the acquired lens LE and bevel formation data (i.e., bevel formation data created from the first edge information and the finishing position) And processing control data for processing the peripheral edge of the lens LE. For example, as processing control data, a drive amount for driving at least one of the lens rotation unit 100a, the chuck shaft moving unit 100b, and the inter-axis distance variation unit 100c is calculated. The lens LE held by the lens chuck shaft 102 is in a state in which the point P1 is in contact with the measuring element 201. For this reason, in the present embodiment, the driving amount from the position where the lens LE contacts the tracing stylus 201 is calculated as processing control data. Of course, the control unit 95 may return the lens chuck shaft 102 to the initial position, and calculate the driving amount from the initial position as processing control data.

<Processing of edge (S12)>
For example, the control unit 95 moves the lens chuck shaft 102 in at least one of the X direction, the Y direction, and the Z direction based on the processing control data, and positions the lens LE on the grindstone 310 of the processing unit 300. Further, for example, the control unit 95 moves the lens chuck shaft 102 in at least one of the X direction, the Y direction, and the Z direction based on the processing control data, and adjusts the relative positional relationship of the lens LE with respect to the grindstone 310 Do. For example, thereby, the peripheral edge of the lens LE is processed (eg, roughened, beveled, etc.). For example, when the operator processes the periphery of the lens LE in this way for the left lens, the operator holds the right lens by the lens chuck shaft 102 and processes the periphery of the lens LE in the same manner as described above.

  As described above, for example, the centering device in this embodiment sets the centering position, which is the mounting position of the lens holding means for holding the eyeglass lens in order to process the periphery of the eyeglass lens, to the eyeglass lens. And an edge information acquisition means for acquiring edge information which is information on an edge of the spectacle lens. This makes it possible to obtain edge information, which has conventionally been obtained using a lens edge processing device, using a centering device. Therefore, the use time of the lens rim processing apparatus can be shortened, and the time required for producing the glasses can be relatively shortened.

  Also, for example, the centering apparatus in the present embodiment includes edge measurement means for acquiring edge information of the spectacle lens, and measures the spectacle lens by controlling the edge measurement means to acquire the edge information. By this, it becomes possible to measure the edge information of a spectacles lens using a centering device, and can shorten the use time of a lens periphery processing apparatus.

  In addition, for example, the centering apparatus in the present embodiment includes a lens-shaped shape acquiring unit that acquires a lens-shaped shape in the spectacle lens. By this, the edge information acquisition means included in the centering device can control the edge measurement means based on the lens shape of the spectacle lens, and can acquire edge information of the position based on the lens shape.

  Also, for example, the centering apparatus in the present embodiment includes a finishing position setting unit that sets a finishing position of the edge based on the edge information of the spectacle lens. By this, it is possible to set the finishing position, which has conventionally been set using the lens edge processing apparatus, using the centering apparatus. Therefore, while the use time of a lens periphery processing apparatus becomes short, the waiting time of a lens periphery processing apparatus is eased, and the time concerning preparation of spectacles can be shortened further.

  Further, for example, the centering apparatus in the present embodiment displays the finishing position on the display means based on the edge information, and based on the operation signal from the operating means for adjusting the finishing position on the display means, Set the finishing position. This makes it easy for the operator to grasp the finishing position formed on the spectacle lens. In addition, the operator can easily adjust the finishing position formed on the spectacle lens.

  Also, for example, the centering apparatus in the present embodiment displays the finish processing position of the left eyeglass lens and the finish processing position of the right eyeglass lens comparably on the display means, and based on the operation signal from the operation means The finishing position of at least one of the spectacle lens and the right spectacle lens is set. As a result, the operator can easily grasp the balance of the finishing position in the left eyeglass lens and the right eyeglass lens. Further, the operator can adjust the finishing position set for the left eyeglass lens and the right eyeglass lens, respectively, in consideration of the balance of the finishing position. Therefore, the operator can easily produce eyeglasses that look good.

  Also, for example, the centering apparatus in the present embodiment includes a refractive index acquisition unit that acquires the refractive index of the spectacle lens, front image data on the front surface of the spectacle lens, and back surface image data on the rear surface of the spectacle lens. The image processing apparatus may include image data acquisition means for acquiring image data, and edge information acquisition means for acquiring edge information which is information regarding an edge of the spectacle lens based on the refractive index and the cross-sectional image data. In this way, it is possible to efficiently acquire edge information of the spectacle lens by using cross-sectional image data changed according to the refractive index of the spectacle lens.

  In addition, for example, the centering apparatus in the present embodiment includes a projection optical system that projects the measurement light flux toward the front or back surface of the spectacle lens, and a first reflected light flux in which the measurement light flux is reflected by the front of the spectacle lens. And a light receiving optical system for receiving the second reflected light beam, which is a measurement light beam reflected by the rear surface of the spectacle lens, by the light receiving element. By this, the image data acquisition means can acquire the cross-sectional image data including the front image data formed by the first reflected light beam and the back surface image data formed by the second reflected light beam with a simple configuration. . Further, the image data acquisition means can acquire cross-sectional image data in a noncontact manner by the measurement light flux. Therefore, edge information of the spectacle lens can be efficiently obtained.

  In this embodiment, a shaft which is an attachment position of the lens supporting means for mounting the spectacle lens and the lens holding means for holding the spectacle lens in order to process the periphery of the spectacle lens to the spectacle lens An alignment apparatus including: an alignment position setting unit that sets an output position; and an alignment position setting unit that sets an alignment position of an eyeglass lens placed on the lens support unit. Double as the role of For example, since the operator can measure the edge information of the spectacle lens without contact using the centering device, the edge information of the spectacle lens can be efficiently acquired.

  In addition, in the present embodiment, the lens peripheral processing device including the processing tool for processing the peripheral edge of the spectacle lens held by the lens holding unit also serves as a lens shape measuring device. For example, since the operator can measure the edge information of the eyeglass lens without contact using the lens edge processing apparatus, the edge information of the eyeglass lens can be efficiently acquired.

<Modification example>
In the present embodiment, as the configuration for holding the lens LE, the configuration in which the lens LE is mounted on the support pin 14 has been described as an example, but the present invention is not limited to this. For example, as a configuration for holding the lens LE, the lens LE may be held. In this case, a configuration in which the side surface (peripheral edge) of the lens LE is held, a configuration in which the front surface and the rear surface of the lens LE are held, and the like can be mentioned.

  Further, in the present embodiment, the configuration in which the lens LE mounted on the support pin 14 is rotated by rotating the cylindrical base 11 (in other words, by rotating the support pin 14) has been described as an example. It is not limited to this. For example, when the cup Cu is axially punched on the surface of the lens LE, the mounting portion 31 may be rotated about the central axis K2 without separating the cup Cu and the mounting portion 31 from each other.

  In the present embodiment, the image data acquisition mechanism 60 has been described by way of an example in which the cross-sectional image of the lens LE captured by the imaging element 69 is described, but the present invention is not limited thereto. For example, the image data acquisition mechanism 60 may be configured to acquire signal data before acquiring a cross-sectional image.

  In the present embodiment, the image data acquisition mechanism 60 corrects the edge information acquired based on the cross-sectional image data 75 based on the refractive index of the lens LE to acquire edge information as an example. However, the present invention is not limited thereto. For example, the image data acquisition mechanism 60 may be configured to correct the cross-sectional image data 75 based on the refractive index of the lens LE and to acquire edge information of the lens LE based on the corrected cross-sectional image data. Of course, also in this case, the image data acquisition mechanism 60 may further correct the edge thickness t of the acquired lens LE in consideration of the front curve value of the lens LE.

  In the present embodiment, the image data acquisition mechanism 60 adjusts the irradiation position of the measurement light beam to a position based on the lens shape TG of the lens LE by the rotation of the lens LE in the horizontal direction and the Z direction movement mechanism 63. However, the present invention is not limited to this. For example, the image data acquisition mechanism 60 further includes an X direction moving mechanism for adjusting the position of the measurement optical system 61 in the left and right direction (X direction), and the measurement light flux is measured by the X direction moving mechanism and the Z direction moving mechanism 63. The irradiation position of may be adjusted. In this case, the irradiation position of the measurement light beam can be adjusted to a position based on the lens shape TG of the lens LE without rotating the lens LE in the horizontal direction.

  In the present embodiment, the Y-direction moving mechanism 62 is driven to move the measurement optical system 61 to obtain the front surface position of the edge of the lens LE. However, the present invention is not limited to this. For example, the measurement optical system 61 may be fixedly disposed without driving the Y-direction moving mechanism 62, and the front surface position of the edge of the lens LE may be obtained. For example, in this case, the control unit 70 may specify the front surface position of the edge of the lens LE from the position of the front image data P1s displayed in each cross-sectional image data 75. Of course, the front surface position of the edge of the lens LE is determined based on both the movement amount of the measurement optical system 61 moved by the Y direction movement mechanism 62 and the position of the front image data P1s displayed in each cross section image data 75. It may be a required configuration.

  In the present embodiment, the image sensor 69 included in the image data acquisition mechanism 60 has been described as an example in which the light receiving surface is arranged perpendicular to the optical axis L4. However, the present invention is not limited thereto. . For example, the imaging device 69 may be arranged to be tiltable. As a result, even if the focal position of the imaging device 69 is shifted between the front and rear surfaces of the lens LE depending on the refractive index of the lens LE and the front curve value, the angle of the light receiving surface of the imaging device 69 is changed to change the focal position. It can be properly adjusted.

  In the present embodiment, the configuration in which the point-like measurement light flux is emitted from the light source 65 provided in the image data acquisition mechanism 60 has been described as an example, but the present invention is not limited to this. For example, the light source 65 may be configured to emit a slit-shaped measurement light beam. In this case, a slit plate and a lens may be provided between the light source 65 and the lens LE, and the measurement light beam irradiated from the light source 65 may be limited to a narrow slit and condensed on the lens LE. As a result, since the slit-shaped measurement light beam having a predetermined width is irradiated to the lens LE, the image pickup element 69 can pick up an image of the front surface and the rear surface of the predetermined width of the lens LE. Further, the front curve value and the rear curve value of the lens LE can also be obtained by performing image processing on the cross-sectional image data 75 captured in this manner.

  Further, in the present embodiment, the configuration in which the point-like measurement light flux is emitted toward one point of the lens LE from the light source 65 provided in the image data acquisition mechanism 60 has been described as an example, but the present invention is not limited thereto. For example, the light source 65 may be disposed movably, and a point-like measurement light beam may be scanned in a line. Also in this case, the imaging element 69 can capture an image of the front surface and the rear surface of the predetermined width of the lens LE. Therefore, the control unit 70 can process the cross-sectional image data 75 to obtain the front curve value and the back curve value of the lens LE.

  In the present embodiment, the image data acquisition mechanism 60 acquires the cross-sectional image data 75 for each radius angle of the lens LE, and the control unit 70 acquires edge information based on the cross-sectional image data 75 as an example. Although mentioned and explained, it is not limited to this. For example, the position at which the cross-sectional image data 75 is not obtained in the lens LE (for example, the position between the points corresponding to the lens shape, etc.) is based on the cross-sectional image data 75 at surrounding radius vector angles. Edge information on the position may be acquired by performing interpolation using edge information.

  In the present embodiment, the light source 65 included in the image data acquisition mechanism 60 irradiates the measurement light beam to the position based on the lens shape of the lens LE as an example, but the present invention is not limited thereto. For example, the configuration may be such that it is measured at any position on the lens LE. As an example, the light source 65 may irradiate the measurement light beam to the hole position, for example, when the lens surface of the lens LE is to be drilled. By this, it is possible to acquire edge information (for example, edge thickness and the like) at the hole position of the lens LE and curve values of the front and rear surfaces.

  Note that, for example, the image sensor 69 included in the image data acquisition mechanism 60 has a good luminance level of the reflected light flux (for example, at least one of the first reflected light flux R1 and the second reflected light flux R2) depending on the curve value of the lens LE. In some cases, the cross-sectional image data 75 of the lens LE can not be obtained with high accuracy. For this reason, for example, the control unit 70 may control the luminance level by controlling the projection light amount of the measurement light beam emitted from the light source 65. In this case, the control unit 70 may detect a luminance level (luminance value) from the cross-sectional image data 75, and determine whether the detected luminance level satisfies a predetermined threshold. As the predetermined threshold, a threshold may be set in advance such that the brightness level is determined to be good by an experiment, a simulation, or the like.

  For example, the control unit 70 controls (changes) the projection light amount of the light source 65 based on the determination result. For example, when the control unit 70 determines that the brightness level of the cross-sectional image data 75 does not satisfy the predetermined threshold (for example, smaller than the predetermined threshold), the brightness level of the cross-sectional image data 75 satisfies the predetermined threshold The amount of light emitted from the light source 65 is increased. Further, for example, when the control unit 70 determines that the luminance level of the cross-sectional image data 75 satisfies the predetermined threshold (for example, the threshold is equal to or higher than the predetermined threshold), the control unit 70 does not control the luminance level and throws the light source 65. Maintain light intensity. Of course, even when it is determined that the luminance level of the cross-sectional image data 75 satisfies the predetermined threshold value, the control unit 70 may control the luminance level so as to obtain a more appropriate luminance level. . As a result, the cross-sectional image data 75 of the lens LE can be acquired with high accuracy in correspondence with the lens LE of various curve values.

  In the present embodiment, the distance h between the front image data P1s of the lens LE and the rear surface image data Q2s acquired from the cross-sectional image data 75 is corrected based on the refractive index of the lens LE. Although the configuration for obtaining the edge thickness t has been described as an example, the present invention is not limited to this. For example, the edge thickness t of the lens LE may be determined by correcting the cross-sectional image data 75 based on the refractive index of the lens LE and calculating the distance h between the front image data and the rear image data after correction. The cross-sectional image data 75 is corrected based on at least one of the refractive index of the lens LE, the front curve value of the lens LE, and the distance D from the optical center position O to the point of each radius vector angle. It is also good.

  In the present embodiment, the configuration in which the cross-sectional image data 75 and the edge information (e.g., the edge thickness t of the lens LE) are acquired after the axial attachment using the cup attachment device 1 has been described as an example. Is not limited to this. In the present embodiment, any configuration may be used as long as the shaft attachment, acquisition of cross-sectional image data 75, and acquisition of edge information are performed using the cup attachment device 1. For example, in this case, after the cross-sectional image data 75 and the edge information are obtained, the axis strike to the lens LE may be performed.

  In the present embodiment, the configuration in which the cup mounting device 1 acquires edge information of the lens LE using the measurement optical system 61 has been described as an example, but the present invention is not limited to this. For example, the cup attachment device 1 may be configured to include a measuring element and obtain edge information of the lens LE by bringing the measuring element into contact with the lens LE.

  Further, in the present embodiment, the configuration for setting the finishing position of the lens LE using the cup attachment device 1 has been described as an example, but the present invention is not limited to this. For example, the finishing position of the lens LE may be set using the lens edge processing apparatus 90. In this case, for example, a finishing position based on the edge thickness may be displayed on a display (not shown) included in the lens edge processing apparatus 90. Further, for example, the finishing position may be set based on an operation signal for adjusting the finishing position. Also, for example, the finishing position of the left lens and the finishing position of the right lens may be displayed comparably.

  In the present embodiment, a configuration in which edge information (second edge information) of one point of the vectorial angle based on the lens shape on the front surface of the lens LE is acquired using the lens edge processing device 90 as an example. However, the present invention is not limited thereto. For example, the lens edge processing device 90 may be used to acquire edge information of a plurality of points of the radius vector angle based on the lens shape. In this case, for example, edge information such as a total of four points on two points on the virtual line V1 (that is, points P1 and P5 in FIG. 13) and two points on the virtual line V2 is acquired. It is also good. As a result, the control unit 95 can predict the deformation and inclination of the lens LE caused by holding the lens LE by the lens chuck shafts 102L and 102R. In the following, the case where the lens LE is inclined will be described as an example.

  FIG. 13 is a view showing the lens chuck shaft 102 holding the lens LE. For example, FIG. 13 shows a cross section by a virtual line V1, and the lens LE is inclined. In FIG. 13, an intersection point of a side g1 extending from the point P1 in a direction perpendicular to the rotation center axis K3 and a side g2 extending from the point P5 in a direction parallel to the rotation center axis K3 will be described as a point P6. For example, the control unit 95 causes the measuring element 201 included in the lens peripheral edge processing apparatus 90 to contact two points (that is, the point P1 and the point P5) on the imaginary line V1 of the lens LE, and position coordinates in the X direction at each point Calculate Subsequently, the control unit 95 calculates the distance between the side g1 and the side g2. For example, the control unit 95 obtains the distance of the side g2 from the difference between the coordinate positions of the point P1 and the point P5 in the X direction. Further, for example, the control unit 95 obtains the distance of the side g1 from the lens shape of the lens LE. For example, in the present embodiment, the distance in the Y direction from the rotation center axis K3 to the point P1 and the distance in the Y direction from the rotation center axis K3 to the point P5 are known from the lens shape, respectively. Based on the distance of the side g1 can be calculated.

  For example, the control unit 95 calculates an angle α formed by the side g1 and a line segment connecting the point P1 and the point P5 by a trigonometric function using the side g1 and the side g2. Thus, the angle at which the lens LE is inclined in the vertical direction with respect to the lens chuck shafts 102L and 102R can be obtained. Further, for example, the control unit 95 also calculates position coordinates for two points on the imaginary line V2 of the lens LE in the lens peripheral edge processing apparatus 90, and in the same manner as described above, the lens LE corresponds to the lens chuck shafts 102L and 102R. It is possible to determine the angle inclined in the horizontal direction. For example, the control unit 95 may make the bevel formation data created by the cup mounting device 1 correspond to the lens LE held by the lens chuck shaft 102 in consideration of these inclination angles. .

  In the present embodiment, the cup mounting device 1 has the edge measuring mechanism, and the structure for measuring the lens LE and acquiring edge information by controlling the edge measuring mechanism has been described as an example. It is not limited to. For example, the cup attachment device 1 may not have the edge measurement mechanism, and may be configured to acquire edge information from another device.

  In the present embodiment, in the setting of the finishing position in step S7, the control unit 70 performs the initial setting and automatic adjustment of the temporary position of the bevel and the manual adjustment of the temporary position of the bevel by the operator. Although described by way of example, it is not limited thereto. For example, these settings and adjustments may be configured to perform at least one of them. Of course, these settings and adjustments may be combined.

Reference Signs List 1 cup mounting device 2 display 10 lens support mechanism 20 frame shape measurement mechanism 30 cup attachment mechanism 40 lens information measurement mechanism 60 image data acquisition mechanism 70 control unit 71 memory 75 cross-sectional image data 80 simulation screen 90 lens edge processing device 100 lens holding unit 102 Lens chuck shaft 200 edge information acquisition unit 300 processing unit

Claims (8)

A lens shape measuring device for processing the periphery of a spectacle lens, comprising:
Refractive index acquisition means for acquiring the refractive index of the spectacle lens;
Image data acquisition means for acquiring cross-sectional image data including front image data on the front surface of the spectacle lens and rear image data on the rear surface of the spectacle lens;
Edge information acquisition means for acquiring edge information which is information on an edge of the spectacle lens based on the refractive index and the cross-sectional image data;
A lens shape measuring apparatus comprising: In the lens shape measuring apparatus according to claim 1,
A projection optical system for projecting a measurement light beam toward the front surface or the rear surface of the spectacle lens;
A light receiving optical system for receiving, by a light receiving element, a first reflected light beam in which the measurement light beam is reflected on the front surface of the eyeglass lens, and a second reflected light beam in which the measurement light beam is reflected on the back surface of the eyeglass lens , And
The image data acquisition means acquires the cross-sectional image data including the front image data formed by the first reflected light beam and the back surface image data formed by the second reflected light beam. Lens shape measuring device. The lens shape measuring apparatus according to claim 1 or 2
The lens shape measuring device, wherein the edge information acquisition means corrects the cross-sectional image data based on the refractive index, and acquires the edge information based on the corrected cross-sectional image data. The lens shape measuring apparatus according to claim 1 or 2
The lens shape measuring device, wherein the edge information acquisition means acquires the edge information by correcting the edge information acquired based on the cross-sectional image data based on the refractive index. In the lens shape measuring apparatus according to any one of claims 1 to 4,
A lens shape measuring device characterized in that the image data acquisition means acquires the cross-sectional image data based on the lens shape of the spectacle lens. In the lens shape measuring apparatus according to any one of claims 1 to 5,
Lens supporting means for mounting the spectacle lens;
A centering position setting means for setting a centering position, which is a mounting position for a spectacle lens, of a lens holding means for holding and holding the spectacle lens to process the peripheral edge of the spectacle lens, which is mounted on the lens support means Centering position setting means for setting the centering position of the spectacle lens which has been set;
A lens shape measuring apparatus comprising: a centering apparatus including: In the lens shape measuring apparatus according to claim 6,
The centering device is
Cup mounting means for mounting a cup for holding the spectacle lens in the lens holding means on the spectacle lens based on the centering position set by the centering position setting means, the lens supporting means What is claimed is: 1. A lens shape measuring apparatus comprising: a cup mounting device for mounting a cup on a surface of the spectacle lens placed on the surface of the lens. The lens shape measuring apparatus according to any one of claims 1 to 5,
What is claimed is: 1. A lens shape measuring apparatus comprising: a lens peripheral processing device including a processing tool for processing the peripheral edge of the spectacle lens held by the lens holding means.

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