JP7052567B2 - Eyeglass lens processing control data acquisition device - Google Patents

Description

The present disclosure relates to a spectacle lens processing control data acquisition device for acquiring processing control data for processing a spectacle lens.

A spectacle lens processing device for processing a spectacle lens is known. In the spectacle lens processing apparatus, processing control data for forming a bevel or a groove on the peripheral edge of the spectacle lens or making a hole in the spectacle lens is acquired, and processing is performed based on the data. In order to give the spectacle lens a design, the lens surface of the spectacle lens may be faceted to form a flat surface. For example, facet processing can be used to form a jewel-like polygonal surface on the lens surface.

Japanese Unexamined Patent Publication No. 2002-126983

By the way, although the facet processing is set manually, it is difficult to imagine the shape of the lens after the facet processing, and it is difficult to set it accurately. For this reason, the quality of the lens after facet processing may not be good. In addition, it took time and effort to set the facet processing.

In view of the above-mentioned prior art, it is a technical subject of the present disclosure to provide a spectacle lens processing control data acquisition device capable of easily setting facet processing.

In order to solve the above problems, the present disclosure is characterized by having the following configurations.
(1) The spectacle lens processing control data acquisition device according to the first aspect of the present disclosure is a spectacle lens processing control data acquisition device for acquiring processing control data for processing spectacle lenses, and is spectacle lens processing control data acquisition device. The first shape information acquisition means for acquiring the facet shape information, the second shape information acquisition means for acquiring the facet shape information applied to the demo lens, which is the facet shape information detected from the demo lens for the spectacles, and the lens mold. It is characterized by comprising a processing control data acquisition means for acquiring facet processing control data for forming at least one plane on the lens surface of the spectacle lens based on the shape information and the facet shape information.
(2) The spectacle lens processing control data acquisition program according to the second aspect of the present disclosure is a spectacle lens processing control data acquisition program used in the spectacle lens processing control data acquisition device for acquiring processing control data for processing the spectacle lens. The first shape information acquisition step for acquiring the eyeball shape information of the spectacles and the facet shape information detected from the demo lens for the spectacles are executed by the processor of the spectacle lens processing control data acquisition device. At least one flat surface on the lens surface of the spectacle lens based on the second shape information acquisition step for acquiring the facet shape information applied to the demo lens, the lens shape information, and the facet shape information. It is characterized in that the spectacle lens processing control data acquisition device executes the processing control data acquisition step of acquiring the facet processing control data for forming the spectacle lens processing control data.

It is an external view of the processing control data acquisition apparatus. It is a schematic diagram of a lens processing mechanism part. It is a schematic diagram of a chamfering unit. It is a schematic diagram of a lens surface shape measuring unit. It is a schematic diagram of a blocker unit. It is a schematic block diagram of a lens measurement mechanism. It is a figure which shows the control system of the processing control data acquisition apparatus. It is a flowchart which shows the control operation. It is a difference image in which the difference between the reference image and the demo lens image is detected. It is a figure explaining the calculation of the point on the processing locus after facet processing. This is an example of the display screen of the monitor.

<Overview>
An outline of the spectacle lens processing control data acquisition device according to the embodiment of the present disclosure will be described. The items classified by <> below can be used independently or in relation to each other.

<First shape information acquisition means>
For example, the spectacle lens processing control data acquisition device includes a first shape information acquisition unit (for example, a control unit 80). The first shape information acquisition means acquires the eyeglass shape information. The eyeglass shape information may be the outer shape of the demo lens or the template. Further, the spectacle shape information may be the internal shape of the rim of the spectacle frame (hereinafter, frame). For example, when the rim of the frame has a convex portion to be fitted into the groove formed in the lens, the internal shape of the convex portion of the rim may be acquired as the internal shape of the frame. For example, when the rim of the frame has a recess for fitting the bevel formed in the lens, the internal shape of the concave portion of the rim may be acquired as the internal shape of the frame.

The first shape information acquisition means may acquire the first shape information acquisition means measured by another device different from the spectacle lens processing control data acquisition device. Further, the first shape information acquisition means acquires the spectacle shape information by measuring the spectacle shape information using the measuring means (for example, the spectacle frame shape measuring unit 20 and the blocker unit 30). You may. The measuring means may have a contact-type configuration in which it contacts at least one of a frame, a demo lens, and a template. Further, the measuring means may have a non-contact type configuration that does not contact any of the frame, the demo lens, and the template.

The contact type configuration may include a stylus and a stylus shaft. The stylus may come into contact with the recess of the rim and be moved along the recess of the rim. The stylus axis may contact and move along at least one of the convex portions of the rim, the periphery of the demo lens, the periphery of the template, and the like. The first shape information acquisition means can acquire the eyeglass shape information by detecting the moving position of the stylus or the stylus axis.

The non-contact type configuration may include a light projecting optical system that irradiates the measured light flux and a light receiving optical system that receives the reflected light beam reflected from the measured light beam. The floodlight optical system may irradiate at least one of the rim of the frame, the peripheral edge of the demo lens, the peripheral edge of the template, and the like with the measured luminous flux. Further, the light receiving optical system may receive the reflected light flux whose measured light flux is reflected on at least one of the rim of the frame, the peripheral edge of the demo lens, the peripheral edge of the template, and the like. The first shape information acquisition means can acquire the eyeglass shape information by analyzing such a reflected luminous flux.

<Second shape information acquisition means>
For example, the spectacle lens processing control data acquisition device includes a second shape information acquisition unit (for example, a control unit 80). The second shape information acquisition means is facet shape information detected from the demo lens for spectacles, and acquires facet shape information applied to the demo lens. For example, the demo lens for eyeglasses may be at least one of a demo lens fitted in the frame, a demo lens fastened to the frame, and the like. For example, the facet shape information includes the shape of the facet surface formed by facet processing (in other words, the shape of the facet formed by facet processing) and the processing line of facet processing (that is, the edge line formed by facet processing). , Facet processing width, etc. may be information including at least one of them. For example, the facet shape information detected from the demo lens may be facet shape information detected from a lens image (demo lens image) obtained by imaging the demo lens.

The second shape information acquisition means acquires the facet shape information applied to the demo lens by measuring the facet shape information using the measuring means (for example, the blocker unit 30) provided in the spectacle lens processing control data acquisition device. May be good. In this case, the measuring means may include an imaging optical system (for example, an imaging optical system 63) that images the lens surface of the demo lens. The second shape information acquisition means may acquire facet shape information by detecting facet shape information from the demo lens image captured by the imaging optical system. As a result, the operator can easily acquire the facet shape information applied to the spectacle lens. Further, by using such an imaging optical system for both acquisition of eyeglass shape information and facet shape information, it is possible to simplify the operation for acquiring such information. can.

Further, the second shape information acquisition means may acquire facet shape information measured by another device different from the spectacle lens processing control data acquisition device. In this case, the second shape information acquisition means may acquire facet shape information by receiving a demo lens image captured by another device and detecting facet shape information from the demo lens image. Further, in this case, the second shape information acquisition means may acquire the facet shape information by receiving the facet shape information detected from the demo lens image captured by another device.

For example, the second shape information acquisition means may be configured to detect the edge by detecting the rise and fall of the luminance at each pixel position of the demo lens image and acquire the facet shape information. Further, for example, the second shape information acquisition means may be configured to detect the edge from the difference processing between the reference image without the demo lens and the demo lens image and acquire the facet shape information. As the difference processing, the luminance value detected from each pixel position of the reference image and the demo lens image may be divided. The detected luminance value may be subtracted from each pixel position of the reference image and the demo lens image. It should be noted that what is detected from the pixel position may be saturation, hue, or the like, and is not limited to the luminance value.

<Third shape information acquisition means>
For example, the spectacle lens processing control data acquisition device includes a third shape information acquisition unit (for example, a control unit 80). The third shape information acquisition means acquires curve information on the lens surface of the spectacle lens. The third shape information acquisition means may be configured to acquire at least curve information on the lens surface of the spectacle lens. For example, the third shape information acquisition means may acquire edge information in addition to curve information. The edge information may be the thickness of the edge surface, the position of the edge surface, and the like.

The third shape information acquisition means may acquire the third shape information acquisition means measured by another device different from the spectacle lens processing control data acquisition device. In this case, the operator may operate the operating means (for example, the switch unit 6) to input the pre-measured spectacle lens curve information. Further, the third shape information acquisition means may acquire the curve information on the lens surface of the spectacle lens by measuring the curve information using the measuring means (for example, the lens surface shape measuring unit 400).

For example, the third shape information acquisition means may acquire curve information on the lens surface on the side where the facet processing is applied to the spectacle lens. That is, when faceting is applied to the front surface of the spectacle lens, curve information at least on the front surface of the spectacle lens is acquired. Further, when faceting the rear surface of the spectacle lens, curve information on at least the rear surface of the spectacle lens is acquired. When faceting is applied to only one of the front surface and the rear surface of the spectacle lens, curve information of both the faceted surface and the non-faceted surface may be acquired. When faceting is applied to the front and rear surfaces of the spectacle lens, curve information on the front and rear surfaces of the spectacle lens is acquired, respectively.

<Machining control data acquisition means>
For example, the spectacle lens processing control data acquisition device includes processing control data acquisition means (for example, a control unit 80). The processing control data acquisition means acquires facet processing control data for forming at least one plane on the lens surface of the spectacle lens based on the lens shape information and the facet shape information. That is, the processing control data acquisition means acquires facet processing control data for forming at least one plane on at least one of the front surface and the rear surface of the spectacle lens based on the lens shape information and the facet shape information. The facet processing control data may be facet processing control data for forming a plurality of planes on the front surface of the spectacle lens. It may be facet processing control data for forming a plurality of planes on the rear surface of the spectacle lens. It may be facet processing control data for forming a plurality of planes on the front surface of the spectacle lens and forming a plurality of planes on the rear surface of the spectacle lens. For example, the facet processing control data may be acquired by being calculated by a control unit (for example, the control unit 80) of the spectacle lens processing control data acquisition device.

For example, the processing control data acquisition means is applied to the lens surface of the spectacle lens based on the lens shape information acquired by the first shape information acquisition means and the facet shape information acquired by the second shape information acquisition means. , The facet processing control data for forming at least one plane may be acquired. As a result, the operator can automatically acquire facet shape information, and by using such facet processing control data, it is possible to perform facet processing suitable for the spectacle lens.

Further, for example, the machining control data acquisition means may acquire facet machining control data based on the lens shape information, the facet shape information, and the curve information acquired by the third shape information acquisition means. .. Since the curve information of the spectacle lens and the curve information of the demo lens do not always match, the facet processing can be performed more accurately by acquiring the facet processing control data considering the curve information of the spectacle lens and using this. Can be done.

In this embodiment, the first shape information acquisition means acquires the eyeglass shape information, the second shape information acquisition means acquires the facet shape information provided on the front surface of the demo lens, and the third shape information acquisition. The means may be configured to acquire curve information on the front surface of the spectacle lens, and the processing control data acquisition means may acquire facet processing control data for forming at least one plane on the front surface of the spectacle lens.

In this embodiment, the machining control data acquisition means may directly acquire the machining control data based on the lens shape information and the facet shape information. Of course, the machining control data acquisition means may directly acquire machining control data based on the lens shape information, facet shape information, and curve information. Further, in the present embodiment, the processing control data acquisition means may acquire a processing region for facet processing applied to the spectacle lens, and may acquire processing control data for this processing region.

<Setting means>
For example, the spectacle lens processing control data acquisition device includes setting means (for example, a control unit 80). The setting means sets the processing area of the facet processing applied to the spectacle lens. As the setting means, at least one of the positions of the start point and the end point in the facet processing processing line, the processing width of facet processing, and the like may be set as the processing region. The machining area may be a machining area set based on the lens shape information and the facet shape information. Of course, when the curve information is acquired, the machining area may be a machining area set based on the lens shape information, the facet shape information, and the curve information. In such a case, the machining control data acquisition means may acquire faceted machining control data based on the set machining area. As a result, the operator can confirm the set processing area and imagine the shape of the spectacle lens after facet processing. In addition, the operator can determine whether or not the set machining area is appropriate.

The setting means may be configured to set the machining area based on the operation signal from the operation means for adjusting the machining area displayed on the display means (for example, the monitor 5). In this case, the machining control data acquisition means may acquire faceted machining control data adjusted based on the settings of the setting means. As a result, the operator can acquire facet processing control data in which the facet processing applied to the spectacle lens is modified to a more suitable state.

For example, in this embodiment, the spectacle lens processing control data acquisition device may have a processing tool for processing the spectacle lens. That is, the spectacle lens processing control data acquisition device may also serve as a spectacle lens processing device for performing facet processing on the spectacle lens. In this case, the spectacle lens processing control data acquisition device may control the processing tool based on the facet processing control data acquired by the processing control data acquisition means to perform facet processing on the spectacle lens.

Further, for example, in the present embodiment, the facet processing control data acquired by the processing control data acquisition means included in the spectacle lens processing control data acquisition device is used in the spectacle lens processing apparatus having a processing tool for processing the spectacle lens. It may be used. In this case, the spectacle lens processing device may control the processing tool based on the facet processing control data acquired by the spectacle lens processing control data acquisition device to perform facet processing on the spectacle lens.

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

<Example>
The spectacle lens processing control data acquisition device 1 (hereinafter, processing control data acquisition device 1) will be described with reference to the drawings. In this embodiment, the left-right direction (horizontal direction) of the machining control data acquisition device 1 is represented by the X direction, the vertical direction (vertical direction) is represented by the Y direction, and the front-back direction is represented by the Z direction.

FIG. 1 is an external view of the machining control data acquisition device 1. The processing control data acquisition device 1 includes a base 2, a housing 3, a window 4, a monitor 5, a lens processing mechanism unit 10 (see FIG. 2), a spectacle frame shape measuring unit 20, a blocker unit 30, and the like. The lens processing mechanism portion 10, the spectacle frame shape measuring unit 20, the blocker unit 30, and the like are integrally attached to the base 2. The window 4 can be opened and closed, and is used to put the lens LE in and out of the lens processing mechanism unit 10.

The monitor 5 is mounted on the machining control data acquisition device 1. The monitor 5 may be a monitor connected to the machining control data acquisition device 1. In this case, a monitor of a personal computer may be used. The monitor 5 may be configured to use a plurality of monitors in combination. Further, the monitor 5 is a display having a touch panel function. That is, the monitor 5 functions as an operation unit (switch unit 6). The monitor 5 does not have to be a touch panel type, and the monitor 5 and the operation unit may be provided separately. In this case, at least one of a mouse, a joystick, a keyboard, a mobile terminal, and the like may be used as the operation unit. The signal corresponding to the operation instruction input from the monitor 5 is output to the control unit 80 described later.

<Lens processing mechanism>
FIG. 2 is a schematic view of the lens processing mechanism unit 10. The lens processing mechanism portion 10 is arranged inside the housing 3. For example, the lens processing mechanism unit 10 includes a grindstone group 100, a carriage unit 200, a chamfering unit 300, a lens surface shape measuring unit 400, a hole processing / grooving unit 500, and the like.

<Grinding stone group>
For example, the grindstone group 100 includes a coarse grindstone 100a for plastics, a finishing grindstone 100b for beveling and flat machining, a mirror finishing grindstone 100c, and the like. The grindstone group 100 is attached to the grindstone rotation shaft 101. The grindstone rotation shaft 101 is rotated by the motor 102. The peripheral edge of the lens LE sandwiched by the lens chuck shaft 202, which will be described later, is processed by being pressed against a grindstone group 100 that is rotated by the drive of the motor 102.

<Carriage part>
For example, the carriage unit 200 includes a carriage 201, a lens chuck shaft 202, a moving support base 203, motors (motors 210 and 220), and the like. The carriage 201 holds the lens chuck shaft (lens rotation shaft) 202. The carriage 201 includes a left arm 201L and a right arm 201R. The lens chuck shaft 202 holds the lens LE. The lens chuck shaft 202 includes a left chuck shaft 202L and a right chuck shaft 202R.

The left chuck shaft 202L is rotatably and coaxially held on the left arm 201L of the carriage 201. The right chuck shaft 202R is rotatably and coaxially held on the right arm 201R of the carriage 201. A motor 220 is attached to the left arm 201L, and when the motor 220 is driven, a rotation transmission mechanism such as a gear (not shown) rotates. The left and right left chuck shafts 202L and 202R rotate in synchronization with each other via this rotation transmission mechanism. A motor 210 is attached to the right arm 201R, and when the motor 210 is driven, the right chuck shaft 202R moves to the left chuck shaft 202L side. As a result, the lens LE is held by the left and right left chuck shafts 202L and 102R.

The carriage 201 is mounted on the moving support 203. The moving support 203 moves the carriage 201 along the lens chuck shaft 202 and the shafts (shafts 208 and 209) parallel to the grindstone rotation shaft 101. A ball screw (not shown) extending parallel to the shaft 208 is attached to the rear portion of the moving support base 203. This ball screw is attached to the rotating shaft of the motor 230. When the motor 230 is driven, the carriage 201 moves linearly with the moving support 203 in the X-axis direction (that is, in the axial direction of the lens chuck shaft 202). The rotation axis of the motor 230 is provided with an encoder (not shown) for detecting the movement of the carriage 201 in the X-axis direction. Further, the shafts 205 and 206 extending in the Y-axis direction (that is, the direction in which the distance between the left chuck shafts 202L and 202R and the grindstone rotation shaft 101 fluctuates) are fixed to the moving support base 203. The motor 240 is fixed to the moving support base 203, and the drive of the motor 240 is transmitted to the ball screw 207 extending in the Y-axis direction. The carriage 201 moves in the Y-axis direction by the rotation of the ball screw 207. The rotation axis of the motor 240 is provided with an encoder (not shown) for detecting the movement of the carriage 201 in the Y-axis direction.

<Chamfering unit>
FIG. 3 is a schematic view of the chamfering unit 300. The chamfering unit 300 is provided in front of the carriage 201. For example, the chamfering unit 300 includes a support block 301, a fixing plate 302, a holding member 311 and a motor (pulse motor 305 and motor 321), a gear (gear 307, idler gear 315, and large gear 313), an arm rotating member 310, and a grindstone. It is equipped with a rotating shaft 330, a grindstone portion 340, and the like.

The support base block 301 is fixed to the base 2, and the fixing plate 302 is fixed to the support base block 301. The holding member 311 and the pulse motor 305 are fixed to the fixing plate 302, respectively. The holding member 311 rotatably holds the arm rotating member 310. A gear 307 is attached to the rotating shaft of the pulse motor 305. The gear 307 meshes with the idler gear 315, and the idler gear 315 meshes with the large gear 313. The large gear 313 is fixed to the arm rotating member 310, and the arm 320 is fixed to the arm rotating member 310. When the pulse motor 305 is driven, the rotation of the gear 307 is transmitted to the large gear 313 via the idler gear 315, and the arm 320 fixed to the arm rotating member 310 is rotated. As a result, the grindstone portion 340 is moved to the machining position and the retracted position.

The motor 321 for rotating the grindstone is fixed to the large gear 313 and rotates together with the large gear 313. The rotating shaft of the motor 321 is connected to the shaft 323. The shaft 323 is rotatably held inside the arm rotating member 310. A pulley 324 is attached to the end of the shaft 323. A holding member 331 is fixed to the arm 320. The holding member 331 rotatably holds the grindstone rotation shaft 330. A pulley 332 is attached to the end of the grindstone rotation shaft 330. The pulley 332 and the pulley 324 are connected by a belt 335. When the motor 321 is driven, the rotation of the shaft 323 is transmitted to the grindstone rotation shaft 330 by the pulley 332, the pulley 324, and the belt 335, and the grindstone rotation shaft 330 rotates.

The grindstone rotation shaft 330 is provided with a grindstone portion 340. The grindstone portion 340 includes a chamfering grindstone 350 and a mirror chamfering grindstone 360. The chamfering grindstone 350 includes a chamfering grindstone 350a for the front surface of the lens and a chamfering grindstone 350b for the rear surface of the lens. The mirror chamfering grindstone 360 includes a mirror chamfering grindstone 360a for the front surface of the lens and a mirror chamfering grindstone 360b for the rear surface of the lens. The machining position of the grindstone portion 340 is such that the grindstone rotation shaft is located between the lens chuck shaft 202 and the grindstone rotary shaft 101 on a plane in which the rotary shaft of the lens chuck shaft 202 and the rotary shaft of the grindstone rotary shaft 101 are located. This is the position where the 330 is placed. As a result, the lens LE can be moved in the X-axis direction by the motor 230 and moved in the Y-axis direction by the motor 240, as in the case of lens peripheral processing by the grindstone group 100. The distance between the lens chuck shaft 202 and the grindstone rotation shaft 330 can be varied, and the lens peripheral edge can be chamfered.

When faceting is performed on the lens surface of the lens LE (that is, at least one of the front surface and the rear surface of the lens LE) to form at least one flat surface, a chamfering grindstone 350 is used as a processing tool. At the time of mirror surface processing, a mirror surface chamfering grindstone 360 is further used as a processing tool. In this embodiment, an example in which a grindstone is used as a processing tool for faceting is given, but an end mill may be used as the processing tool.

<Lens surface shape measurement unit>
FIG. 4 is a schematic view of the lens surface shape measuring unit 400. The lens surface shape measuring unit 400 has a measuring unit 400F for measuring the edge position on the front surface of the lens LE and a measuring unit 400R for measuring the edge position on the rear surface of the lens LE. FIG. 2 shows the measuring unit 400F. do. Since the measuring unit 400R is symmetrical with the measuring unit 400F, the "F" at the end of the reference numeral attached to each component of the measuring unit 400F can be replaced with "R".

The lens surface shape measuring unit 400 is provided above the carriage 201. For example, the lens surface shape measuring unit 400 includes a support base block 400a, a mounting support base 401F, a stylus arm 404F, a hand 405F, a stylus 406F, a slide base 410F, a motor 416F, gears (gear 415F and idle gear 414F), and the like. To prepare for.

The support base block 400a is fixed to the base 2, and the mounting support base 401F is fixed to the support base block 400a. The rail 402F is fixed to the mounting support 401F, and the slider 403F is slidably mounted on the rail 402F. The slide base 410F is fixed to the slider 403F, and the stylus arm 404F is fixed to the slide base 410F. An L-shaped hand 405F is fixed to the tip of the stylus arm 404F, and a stylus 406F is fixed to the tip of the hand 405F. The stylus 406F is in contact with the front surface of the lens LE.

The motor 416F and the encoder 413F are fixed to the support block 400a. The rotating shaft of the motor 416F meshes with the gear 415F, and the gear 415F meshes with the idle gear 414F. The idle gear 414F meshes with the pinion 412F of the encoder 413F. A rack 411F is fixed to the lower end of the slide base 410F, and the rack 411F meshes with the pinion 412F. When the motor 416F is driven, the rotation of the motor 416F is transmitted to the rack 411F via the gear 415F, the idle gear 414F, and the pinion 412F. As a result, the slide base 410F moves in the X-axis direction.

During the measurement of the lens surface shape, the motor 416F always presses the stylus 406F against the lens LE with a constant force. The encoder 413F detects the moving position of the slide base 410F in the X-axis direction. The edge position on the front surface of the lens LE is measured by information such as the moving position of the slide base 410F in the X-axis direction, the rotation angle of the lens chuck shaft 202, and the moving position of the lens chuck shaft 202 in the Y-axis direction.

<Hole processing / grooving unit>
The hole drilling / grooving unit 500 is used when performing at least one of drilling and grooving on the lens LE. The hole drilling / grooving unit 500 is provided with an end mill as a machining tool for drilling holes in the lens LE and a grooving cutter as a machining tool for grooving the lens LE. For the detailed configuration of the hole drilling / grooving unit, refer to, for example, Japanese Patent Application Laid-Open No. 2003-145328.

<Glasses frame shape measurement unit>
The spectacle frame shape measuring unit 20 is used when tracing the shape of the frame. The spectacle frame shape measuring unit 20 can acquire the internal shape of the rim of the frame. That is, the spectacle frame shape measuring unit 20 can acquire the spectacle shape. For details of the spectacle frame shape measuring unit 20, refer to, for example, Japanese Patent Application Laid-Open No. 2014-52222.

<Blocker unit>
FIG. 5 is a schematic view of the blocker unit 30. For example, the blocker unit 30 includes a lens support mechanism 40, a cup mounting mechanism 50, and a lens measuring mechanism 60 (see FIG. 6). The lens is placed on the lens support mechanism 40 with the front surface of the lens facing upward. The cup mounting mechanism 50 is used when mounting the cup CU on the front surface of the lens LE. That is, the cup mounting mechanism 50 is used when fixing (shafting) the cup CU to the front surface of the lens LE.

<Lens support mechanism>
For example, the lens support mechanism 40 includes a cylindrical base 41, a protective cover 42, a support pin 43, and the like. A protective cover 42 is installed on the cylindrical base 41. An index plate 67 and the like, which will be described later, are arranged in the cylindrical base 41. On the protective cover 42, three support pins 43 are arranged equidistantly and at an equal angle around a reference axis (optical axis) L1 for mounting the cup. The support pin 43 holds the lens LE by abutting on the rear surface (back surface) of the lens LE.

<Cup mounting mechanism>
For example, the cup mounting mechanism 50 includes a moving support base 51, a support arm 52, a moving arm 53, a shaft 54, a cup mounting portion 55, and the like. Two columns 56 are fixed to the cylindrical base 41, and the columns 56 support the block 57 at the upper ends thereof. A moving support base 51 integrally provided with a moving arm 53 is attached to the support column 56 so as to be movable in the vertical direction. Inside the moving support base 51, a spring (not shown) for always urging the moving support base 51 upward is arranged. The moving arm 53 is attached to the moving support base 51 so as to extend in front of the moving support base 51. A shaft 54 is attached to the moving arm 53. The axis of the shaft 54 is coaxial with the axis L2 extending in the left-right orthogonal direction with respect to the optical axis L1. The moving arm 53 holds the support arm 52, and the support arm 52 supports the cup mounting portion 55. The support arm 52 is rotatable about the shaft 54 (that is, the shaft L2) in a direction in which the cup mounting portion 55 faces the front side (operator side) and a direction in which the cup mounting portion 55 faces the downward side. A lever 58 for the operator to rotate the support arm 52 is fixed to the support arm 52. The shaft 54 is provided with a coil spring (not shown) that applies an urging force so that the cup mounting portion 55 faces from the downward direction to the front direction. When the operator is not operating the lever 58, the cup mounting portion 55 always faces forward. A cup CU, which is a jig for sandwiching the lens LE on the lens chuck shaft 202, is mounted on the cup mounting portion 55.

<Lens measurement mechanism>
FIG. 6 is a schematic configuration diagram of the lens measuring mechanism 60. The lens measuring mechanism 60 in the present embodiment has a measurement optical system for acquiring the optical characteristics of the lens and information different from the optical characteristics of the lens (for example, the outer shape of the lens, the marking points attached to the lens, and the lens. It also serves as a measurement optical system for acquiring the formed hidden mark, etc.). The measurement optical system for acquiring the optical characteristics of the lens and the measurement optical system for acquiring information on the lens different from the optical characteristics of the lens may be separately provided.

For example, the lens measuring mechanism 60 includes an illumination optical system 61, a light receiving optical system 62, an image pickup optical system 63, and the like. For example, the illumination optical system 61 includes a light source 64, a half mirror 65, a concave mirror 66, and the like. The light source 64 irradiates the lens with the measured luminous flux. For example, the light source 64 may be an LED (Light Emitting Diode). The measured luminous flux emitted from the light source 64 is reflected by the half mirror 65 arranged on the optical axis L3 and coincides with the optical axis L3. For example, the concave mirror 66 reflects the measured luminous flux from the optical axis L1 toward the optical axis L3, and the measured luminous flux is a parallel luminous flux (substantially parallel luminous flux) having a diameter larger than that of the lens LE arranged on the optical axis L1. Shape to.

For example, the light receiving optical system 62 includes an index plate 67, an image pickup element 68, and the like. For example, the index plate 67 is used to detect the optical center of the lens LE and the like. A large number of openings (luminous flux passage ports) are formed in the index plate 67 in a predetermined pattern. In this embodiment, the retroreflective member 69 is attached to a region other than the predetermined pattern to form a pattern other than the predetermined pattern. The image pickup element 68 is irradiated from the light source 64 and takes an image of the measured luminous flux that has passed through the lens LE and the index plate 67. For example, the image pickup device 68 may be a CCD (Charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor), or the like. The light receiving optical system 62 in this embodiment may have a configuration in which a lens is arranged between the index plate 67 and the image pickup element 68.

For example, the image pickup optical system 63 includes a concave mirror 66, a diaphragm 70, an image pickup lens 71, an image pickup element 72, and the like. The image pickup magnification of the image pickup optical system 63 is such that the entire lens LE is imaged by the image pickup element 72. The concave mirror 66 in the imaging optical system 63 is shared with the concave mirror 66 in the illumination optical system 61. The aperture 70 is arranged at the focal position (substantially focal position) of the concave mirror 66. The aperture 70 has a positional relationship that is conjugate (substantially conjugate) with the light source 64. The image pickup element 72 takes an image of the reflected light beam emitted from the light source 64 and reflected by the retroreflective member 69. For example, the image pickup device 72 may be a CCD, CMOS, or the like. The focus position of the image pickup element 72 is adjusted to the vicinity of the surface of the lens LE by the image pickup lens 71 and the concave mirror 66. As a result, it is possible to take an image of a mark point attached to the surface of the lens, a hidden mark formed on the lens, and the like in a substantially focused state.

<Control unit>
FIG. 7 is a diagram showing a control system of the machining control data acquisition device 1. For example, the control unit 80 includes a monitor 5, a switch unit 6, a light source 64, each encoder, each motor (motors 102, 210, 110, 230, 240, 305, 321 and 416F, etc.), and each image sensor (image sensor). 68, image sensor 72, etc.) Non-volatile memory 85 (hereinafter, memory 85), etc. are electrically connected. The memory 85 may be a non-transient storage medium capable of retaining the storage contents even when the power supply is cut off. For example, as the memory 85, a hard disk drive, a flash ROM, a detachable USB memory, or the like can be used. The memory 85 has an eyeglass shape (first shape information), facet shape information of the demo lens DL (second shape information), curve information of the lens LE (third shape information), and processing control data acquired by the control unit 80. , Etc. may be memorized.

For example, the control unit 80 is realized by a general CPU (processor), RAM, ROM, or the like. For example, the CPU controls the driving of each part in the processing control data acquisition device 1. For example, RAM temporarily stores various types of information. For example, the ROM stores various programs executed by the CPU. The control unit 80 may be composed of a plurality of control units (that is, a plurality of processors).

<Control operation>
Hereinafter, a procedure for acquiring machining control data using the machining control data acquisition device 1 will be described together with a control operation of the machining control data acquisition device 1 by using the flowchart shown in FIG. In this embodiment, a case where facet processing is performed on the front surface of the demo lens DL and facet processing control data for forming at least one plane on the front surface of the lens LE is acquired as an example.

<Acquisition of first shape information (S1)>
First, the control unit 80 acquires the ball shape information of the spectacles. The eyeglass shape information may be the inner shape of the rim of the frame or the outer shape of the demo lens (or template). For example, in this embodiment, a case where the control unit 80 acquires the ball shape information of the spectacles by taking an entire image of the demo lens using the blocker unit 30 and measuring the outer shape of the demo lens is illustrated. Of course, the control unit 80 may acquire the ball shape information by reading the ball shape information measured by using another device.

The operator places the demo lens DL on the support pin 43, and selects a start button for starting the measurement of the external shape of the demo lens DL from the switch unit 6 displayed on the monitor 5. The control unit 80 turns on the light source 64 in response to the input signal from the start button, and irradiates the demo lens DL with the measured luminous flux. The measured luminous flux reflected by the retroreflective member 69 and illuminating the demo lens DL from the rear surface is received by the image pickup device 72. As a result, the entire image (demo lens image) of the demo lens DL is captured. The control unit 80 may capture a plurality of demo lens images in which the amount of light of the light source 64 is increased or decreased in order to obtain a demo lens image that makes it easy to detect the outer shape, the facet line, etc. described later.

The control unit 80 acquires the outer shape of the demo lens DL, the outer shape coordinates, the boxing center position B, and the like by performing image processing on the demo lens image. For example, the outer shape of the demo lens DL is acquired by detecting the difference between the image (reference image) in which the demo lens DL is not placed on the support pin 43 and the demo lens image. FIG. 9 is a difference image 90 in which the difference between the reference image and the demo lens image is detected. Both the reference image and the demo lens image are light receiving images received by the image sensor 72. Therefore, the number of pixels of the reference image and the demo lens image is the same, and each pixel position of the reference image corresponds to each pixel position of the demo lens image. That is, the reference image and the demo lens image have a pixel-to-pixel relationship. The control unit 80 can obtain a difference image 90 by detecting the luminance value from each pixel position of the reference image and the demo lens image and subtracting the luminance value of the demo lens image from the luminance value of the reference image for each pixel position. .. The control unit 80 detects an edge (edge shown by a solid line in FIG. 8) having the maximum area of the figure surrounded by the edge among the edges appearing in the difference image 90. Further, the control unit 80 stores this edge in the memory 85 as the outer shape 91 of the demo lens.

The boxing center position B is calculated as the intersection of straight lines connecting the midpoints of the opposing sides in the quadrangle surrounding the outer shape 91. The external position coordinates are represented by two-dimensional coordinates with respect to the boxing center position B. For example, the position coordinates of the points on the outer shape 91 may be obtained for each predetermined angle (for example, every 0.36 degrees) from the boxing center position B.

<Acquisition of second shape information (S2)>
Subsequently, the control unit 80 acquires facet shape information applied to the demo lens DL. Faceted shape information includes the shape of the facet surface formed by facet processing (in other words, the shape of the facet formed by facet processing), the processing line of facet processing (that is, the edge line formed by facet processing), and facet. It may be the processing width of processing, etc. In this embodiment, a case where a faceted processing line applied to the front surface of the demo lens DL is acquired is illustrated.

For example, the control unit 80 detects the facet processing processing line 92 (hereinafter referred to as facet line 92) as facet shape information from the demo lens image captured by the image sensor 72. In other words, the control unit 80 detects the edge formed on the lens surface of the demo lens DL as facet shape information. In this embodiment, the facet line 92 is detected from the difference image 90 acquired based on the demo lens image. The control unit 80 detects an edge (edge shown by a dotted line in FIG. 8) in contact with the outer shape 91 of the demo lens DL among the edges appearing in the difference image 90. Further, the control unit 80 stores such an edge as the facet line 92 of the demo lens DL. In order to improve the detection accuracy of the facet line 92, the range for detecting the facet line 92 from the difference image 90 may be set in advance. In this case, in the difference image 90, the range of the pixel region corresponding to the inside of the outer shape 91 of the demo lens DL by 5 mm may be set as the range for detecting the facet line 92.

For example, in the present embodiment, the control unit 80 has the detected demo lens DL facet line 92 at predetermined angles centered on the boxing center position B (that is, the radial angles θ1, θ2, θ3, ... (Every θn), the position coordinates of the points β11, β12, β13, β14, ... β1n on the facet line are obtained. Further, the control unit 80 obtains the length of the line segment Cn connecting the boxing center position B and each point β1n on the facet line 92.

<Acquisition of third shape information (S3)>
Subsequently, the control unit 80 acquires curve information on the lens surface of the lens LE. The control unit 80 may acquire curve information on at least one of the front surface and the rear surface of the lens. Further, the control unit 80 may acquire the edge information of the lens in addition to the curve information described above. For example, in this embodiment, since the case where the front surface of the demo lens DL is faceted is illustrated, the curve information on the front surface of the lens LE is acquired by the control unit 80. Of course, the control unit 80 may acquire the curve information on the rear surface of the lens LE as well as the curve information on the front surface of the lens LE.

For example, the control unit 80 acquires the curve information by measuring the front surface of the lens LE using the lens surface shape measuring unit 400. Of course, the control unit 80 may acquire the curve information by reading the curve information measured by using another device. Further, the control unit 80 may measure the curve information in advance with a curve scale or the like by the operator and acquire the curve information input by the operator.

The operator uses the blocker unit 30 to attach the cup CU, which is a processing jig, to the surface of the lens LE. The mounting position of the cup CU may be at least one of the optical center position A of the lens LE, the boxing center position B (that is, the geometric center position B), and the like. Of course, the mounting position of the cup CU may be different from the optical center position A and the boxing center position B of the lens LE. Subsequently, the operator attaches the cup CU attached to the surface of the lens LE to a cup holder (not shown) included in the lens chuck shaft 202. The control unit 80 drives the carriage unit 200 to move the right chuck shaft 202R, and causes the lens LE to be held by the lens chuck shaft 202 in a predetermined state.

The control unit 80 controls the relative movement of the lens chuck shaft 202 so that the stylus 406F included in the lens surface shape measuring unit 400 comes into contact with two measurement positions on the front surface of the lens LE. For example, the two measurement positions on the front surface of the lens LE are two measurement positions in at least one meridian direction about the axis of the lens chuck axis 202 (that is, the optical center position A of the lens LE, etc.). You may. More specifically, in the direction having the longest radial length from the axis of the lens chuck shaft 202, a position 2 mm inside and a position 3 mm inside from the spherical shape of the spectacles (in this embodiment, the outer shape of the demo lens DL). And may be set at the measurement position. As a result, the positions of the two points in the X direction on the front surface of the lens LE are acquired. The control unit 80 is the position in the X direction at the two measurement positions, the distance from the axis of the lens chuck shaft 202 to the measurement positions at the two points, and the position in the X direction of the lens chuck shaft 202 on the front surface of the lens LE (this). Is known as a metric in the X direction), and obtains curve information on the front surface of the lens LE.

For example, the control unit 80 uses the curve information of the lens LE to estimate how much the front surface of the lens LE is curved from the optical center position A. That is, the control unit 80 estimates the curved shape of the front surface of the lens LE.

<Setting of machining area (S4)>
Subsequently, the control unit 80 sets a processing area for facet processing applied to the lens LE. For example, the facet processing region is set based on the outer shape 91 of the demo lens DL (that is, the eyeglass shape) and the facet line 92 (that is, facet shape information) detected from the demo lens DL. May be good. When the curve information of the lens LE is acquired as in this embodiment, the control unit 80 includes the external shape 91 of the demo lens DL, the facet line 92, and the curve information of the lens LE, as described below. , The machining area may be set based on.

When the control unit 80 acquires the outer shape 91 of the demo lens DL, the facet line 92 of the demo lens DL, and the curve information of the lens LE, the control unit 80 sets the processing region of the facet processing applied to the lens LE for each radius angle of the lens LE. .. For example, in this embodiment, the facet is based on the point β1n on the facet line 92 (in other words, the point β1n on the processing locus 92 on the front side of the facet processing) and the inclination angle of the grindstone surface of the chamfering wheel 350a for the front surface of the lens. The processing area for facet processing is set by calculating the point α2n (see FIG. 10) on the processing locus 93 on the rear side of processing for each radius angle θn.

FIG. 10 is a diagram illustrating the calculation of the point α2n on the processing locus 93 on the rear side of the facet processing. FIG. 10A is a diagram showing the side surface of the demo lens DL from a certain radial angle direction. FIG. 10B is a view showing the side surface of the lens LE from a certain radial angle direction. FIG. 10 (c) is a diagram showing a lens LE in a faceted state. For example, using the outer shape 91 of the demo lens DL acquired in steps S1 and S2 and the facet line 92, each point β1n on the facet line 92 and each point β1n on the boxing center position B to the facet line 92. The length of the line segment Cn to be connected is obtained for each radial angle. Since the outer shape 91 and the facet line 92 of the demo lens DL are two-dimensional shapes, the positions of these points are represented by two-dimensional coordinates (YZ coordinates). However, since the lens LE to be processed is curved, each point β1n on the facet line 92 in the demo lens DL is not necessarily located in front of the lens LE.

Therefore, the control unit 80 obtains the position coordinates of the point β2n on the lens LE corresponding to the point β1n on the facet line 92. For example, the control unit 80 translates the point β1n in the X direction and calculates the position of the point β2n in contact with the front surface of the lens LE by using the curved shape of the front surface of the lens LE. Further, for example, the control unit 80 obtains the length of the side g1 connecting the optical center position A and the point β2n by linear approximation, and moves the point β1n in parallel in the X direction from the triangular function using the side g1 and the line segment Cn. The length of the side g2, which is the distance between the two, is calculated. As a result, the amount of change in the coordinates in the X direction is obtained with respect to the position coordinates at the point β1n on the facet line 92, and the three-dimensional coordinates (XYZ coordinates) of the point β2n on the lens LE are calculated.

Subsequently, the control unit 80 extends a straight line from the point β2n on the lens LE toward the edge surface of the lens LE at the inclination angle γ of the grindstone surface of the chamfering grindstone 350a for the front surface of the lens, and this straight line is the edge surface of the lens LE. The position coordinates (xn, yn, zn) (n = 1, 2, 3, ..., N) of the point α2n, which is the position in contact with the lens, are obtained. For example, by such arithmetic processing, the point α2n on the processing locus 93 on the rear side of the facet processing is obtained for each radius angle. In this embodiment, the point α2n is represented by three-dimensional Cartesian coordinates. At the point α2n, the positions in the X and Y directions are represented by two-dimensional polar coordinates by the radius angle θn and the radius length rn, and the positions in the Z direction are represented by Z coordinates (rn, zn, θn) (n =). It may be appropriately converted and expressed as 1, 2, 3, ..., N).

The facet machining area set by the control unit 80 can also be manually adjusted by the operator. In this case, the control unit 80 displays the processing area based on the outer shape 91 of the demo lens DL, the facet line 92 of the demo lens DL, the curve information of the lens LE, and the like on the monitor 5. Further, the control unit 80 sets the processing area based on the operation signal from the switch unit 6 for adjusting the processing area displayed on the monitor 5. FIG. 11 is an example of the display screen of the monitor 5. For example, the monitor 5 displays the cross-sectional shape 95 of the lens LE, the outer shape 91, the facet line 92, the cursor 96, the input field 97, and the like. The cross-sectional shape 95 of the lens LE may be displayed in the same size as the outer shape 91 so that the correspondence with the outer shape 91 can be easily grasped. The cross-sectional shape 95 of the lens LE may be displayed based on the edge information of the lens LE (for example, the edge positions of the front and rear surfaces of the lens LE, the edge thickness of the lens LE, etc.) and the outer shape 91.

For example, the operator operates the cursor 96 to specify the observation direction of the edge surface of the lens LE, and displays the cross-sectional shape 95. Further, for example, the operator may set the facet line 92 connecting these points by designating two points P1 and P2 on the outer shape 91. Further, for example, the operator may input the processing width W of facet processing from the input field 97. As a result, the processed area of facet processing applied to the lens LE can be corrected to a more optimum state.

<Acquisition of machining control data (S5)>
When the facet processing region is set, the control unit 80 acquires facet processing control data for forming at least one plane on the lens surface of the lens LE (in this embodiment, the front surface of the lens LE). For example, in this embodiment, facet machining control data is acquired based on the facet machining machining area set in step S4.

The control unit 80 of the lens chuck shaft 202 in the carriage unit 200 is based on the faceted processing region set by using the external shape 91 of the demo lens DL, the facet line 92 of the demo lens DL, and the curve information of the lens LE. The facet processing control data that controls rotation, movement of the lens chuck shaft 202, etc. is calculated. For example, the control unit 80 uses the processing locus 93 on the rear side of the facet processing in the lens LE to position coordinates (rn, Zn, θn) (n = 1, 2, 3, ..., N) of each point β2n. ) May be converted into the movement amount of the X-axis and the Y-axis of the carriage 201 to acquire facet processing control data.

<Implementation of facet processing (S6)>
When the operator selects the start button for starting the processing of the lens LE from the switch unit 6 displayed on the monitor 5, the control unit 80 processes the peripheral edge of the lens LE and the lens surface. The control unit 80 moves the carriage 201 and processes the peripheral edge of the lens LE sandwiched by the lens chuck shaft 202 based on the outer shape 91 of the demo lens DL. For example, the control unit 80 rough-processes the peripheral edge of the lens LE with the rough grindstone 100a, and then flat-finishes it with the finishing grindstone 100b. Next, the control unit 80 arranges the grindstone rotation shaft 330 of the chamfering unit 300 at the processing position, and processes the lens surface of the lens LE based on the facet processing control data. For example, the control unit 80 controls the movement of the lens chuck shaft 202 in the X-axis direction and the Y-axis direction, and brings the front surface of the lens LE into contact with the chamfering grindstone 350a for the front surface of the lens to facet the front surface of the lens LE. .. This makes it possible to obtain a lens LE preferably faceted.

As described above, for example, the spectacle lens processing control data acquisition device in the present embodiment is the spectacle lens shape information and the facet shape information detected from the spectacle demo lens, and is the facet applied to the spectacle lens. The shape information and the facet processing control data for forming at least one plane on the lens surface of the spectacle lens are acquired based on the shape information and the facet shape information. The operator can automatically set the facet processing, and by using such facet processing control data, it is possible to perform the facet processing suitable for the spectacle lens.

Further, for example, the spectacle lens processing control data acquisition device in the present embodiment acquires curve information on the lens surface of the spectacle lens, and facet processing is performed based on the lens shape information, the facet shape information, and the curve information. Get control data. Since the curve information of the spectacle lens and the curve information of the demo lens do not always match, the facet processing can be performed more accurately by acquiring the facet processing control data considering the curve information of the spectacle lens and using this. Can be done.

Further, for example, the spectacle lens processing control data acquisition device in the present embodiment includes an image pickup optical system that images the lens surface of the demo lens, and detects facet shape information from the lens image of the demo lens imaged by the image pickup optical system. As a result, the operator can easily acquire the facet shape information applied to the spectacle lens. By using such an imaging optical system for both acquisition of eyeglass shape information and facet shape information, it is possible to simplify the operation for acquiring such information. can.

Further, for example, the spectacle lens processing control data acquisition device in the present embodiment sets a processing area for facet processing applied to the spectacle lens, and acquires facet processing control data based on the set processing area. By checking the set processing area, the operator can easily imagine the shape of the spectacle lens after facet processing. In addition, the operator can determine whether or not the set machining area is appropriate.

Further, for example, in the spectacle lens processing control data acquisition device in the present embodiment, the processing area of the facet processing applied to the spectacle lens is displayed on the display unit, and the processing area displayed on the display unit is adjusted from the operation unit. The machining area is set based on the operation signal, and the facet machining control data adjusted based on such a setting is acquired. As a result, the operator can acquire facet processing control data in which the facet processing applied to the spectacle lens is modified to a more suitable state.

<Example of transformation>
In this embodiment, the configuration for acquiring the outer shape of the demo lens DL as the eyeglass shape information has been described as an example, but the present invention is not limited to this. For example, the internal shape of the frame may be acquired as the ball shape information of the spectacles. For example, when the rim of the frame has a convex portion to be fitted into the groove formed in the lens LE, the internal shape of the convex portion of the rim may be acquired as the internal shape of the frame. Further, for example, when the rim of the frame has a recess for fitting the bevel formed in the lens LE, the internal shape of the concave portion of the rim may be acquired as the internal shape of the frame. The internal shape of such a frame may be acquired by a contact-type configuration such as bringing a stylus included in the spectacle frame shape measuring unit 20 into contact with the frame. Of course, the internal shape of such a frame is acquired by a non-contact configuration including a light projecting optical system that projects a measured light beam and a light receiving optical system that receives a reflected light beam reflected from the measured light beam. You may.

Further, in this embodiment, a configuration in which the outer shape 91 of the demo lens DL is acquired by using the blocker unit 30 (that is, a non-contact configuration) has been described as an example, but the present invention is not limited to this. Of course, the outer shape 91 of the demo lens DL may be acquired by a contact-type configuration such as bringing a stylus included in the spectacle frame shape measuring unit 20 into contact with the frame. For example, in this case, the stylus may be moved along the peripheral edge of the demo lens DL with the stylus in contact with the peripheral edge of the demo lens DL, and the outer shape of the demo lens DL may be acquired from the moving position.

In this embodiment, a configuration in which facet shape information is detected by image processing a demo lens image obtained by capturing a demo lens DL has been described as an example, but the present invention is not limited to this. For example, the facet shape information may be detected based on information such as the position of the light receiving surface where the measured luminous flux is applied to the demo lens DL from multiple directions and the reflected luminous flux is received, the time when the reflected luminous flux is received, and the like.

In this embodiment, a configuration in which a display screen for setting a machining area is displayed on the monitor 5 and a facet machining area is set by changing the facet line 92 or the like on the display screen is given as an example. However, it is not limited to this. For example, the demo lens image captured by the blocker unit 30 is displayed on the monitor 5, and the outer shape 91 and facet line 92 of the demo lens DL acquired in steps S1 and S2 are superimposed and displayed on the demo lens image. May be done. This makes it possible to trace the facet line 92 reflected in the demo lens image and set the processing area for facet processing. Not limited to the facet line 92 of the demo lens DL, the outer shape 91 of the demo lens DL may be traced. If the demo lens DL is drilled, the position of the hole may be traced.

In this embodiment, the configuration for acquiring the curve information of the lens LE has been described as an example, but the present invention is not limited to this. As described above, in addition to the curve information of the lens LE, the edge information of the lens LE may be included. The edge information may be the edge thickness or the edge position. In this case, the control unit 80 may determine whether or not facet processing can be performed by using the edge information. For example, depending on the curved shape of the lens LE, the point α2n on the processing locus 93 on the rear side of the facet processing may not be located on the edge surface. When facet processing control data is created in this state and the lens LE is processed, the edge surface is scraped by the facet processing and the lens shape becomes smaller. Therefore, the control unit 80 may use the edge information of the lens LE to determine that facet processing cannot be performed when the point α2n deviates from the edge surface. When such a determination result is obtained, the control unit 80 automatically changes the positions of the two points where the outer shape 91 of the demo lens DL and the facet line 92 are in contact with each other, and recreates the facet processing control data. You may.

In this embodiment, the facet processing processing area is set based on the eyeglass shape information, the facet shape information of the demo lens DL, and the curve information of the lens LE, and the facet processing control data is generated based on this processing area. The configuration to be acquired has been described as an example, but the present invention is not limited to this. For example, the facet processing control data may be directly acquired based on the eyeglass shape information, the facet shape information of the demo lens DL, and the curve information of the lens LE.

In this embodiment, the curve information of the demo lens DL may be acquired together with the curve information of the lens LE. In this case, the facet processing area may be set in consideration of the curve information of the demo lens DL. Further, in this case, facet processing control data may be created in consideration of the curve information of the demo lens DL.

In this embodiment, the spectacle lens processing control data acquisition device 1 is provided with a lens processing mechanism unit 10 for processing the peripheral edge and the lens surface of the lens LE, and the spectacle lens processing control data acquisition device 1 is used to face the lens LE. The configuration to be processed has been described as an example, but the present invention is not limited to this. For example, the processing control data acquired by the spectacle lens processing control data acquisition device 1 may be transferred to another device, and facet processing may be performed by the separate device.

1 Eyeglass lens processing control data acquisition device 10 Lens processing mechanism unit 20 Eyeglass frame shape measurement unit 30 Blocker unit 40 Lens support mechanism 50 Cup mounting mechanism 60 Lens measurement mechanism 80 Control unit 85 Memory 100 Grinding stone group 200 Carriage unit 300 Chamfering unit 400 Lens Surface shape measurement unit

Claims (7)

It is a spectacle lens processing control data acquisition device that acquires processing control data for processing spectacle lenses.
The first shape information acquisition means for acquiring the eyeglass shape information and
Second shape information acquisition means for acquiring facet shape information applied to the demo lens, which is facet shape information detected from the demo lens for eyeglasses.
A processing control data acquisition means for acquiring facet processing control data for forming at least one plane on the lens surface of the spectacle lens based on the lens shape information and the facet shape information.
A spectacle lens processing control data acquisition device characterized by being equipped with. In the spectacle lens processing control data acquisition device of claim 1,
A third shape information acquisition means for acquiring curve information on the lens surface of the spectacle lens is provided.
The processing control data acquisition unit is a spectacle lens processing control data acquisition device characterized by acquiring the facet processing control data based on the lens shape information, the facet shape information, and the curve information. .. In the spectacle lens processing control data acquisition device of claim 2,
The second shape information acquisition means acquires facet shape information provided on the front surface of the demo lens, and obtains the facet shape information.
The third shape information acquisition means acquires the curve information on the front surface of the spectacle lens, and obtains the curve information.
The processing control data acquisition unit is a spectacle lens processing control data acquisition device, which acquires the facet processing control data for forming at least one plane on the front surface of the spectacle lens. In the spectacle lens processing control data acquisition device according to any one of claims 1 to 3.
It is equipped with an imaging optical system that captures the lens surface of the demo lens.
The second shape information acquisition means obtains the facet shape information by detecting the facet shape information from the lens image of the demo lens imaged by the image pickup optical system. Data acquisition device. In the spectacle lens processing control data acquisition device according to any one of claims 1 to 4.
A setting means for setting a processing area for facet processing applied to the spectacle lens is provided.
The processing control data acquisition means is a spectacle lens processing control data acquisition device characterized by acquiring the facet processing control data based on the set processing area. It is a spectacle lens processing device that has a processing tool for processing spectacle lenses.
It is characterized in that the processing tool is controlled based on the facet processing control data acquired by the spectacle lens processing control data acquisition device according to any one of claims 1 to 5, and the spectacle lens is subjected to facet processing. Eyeglass lens processing equipment. It is a spectacle lens processing control data acquisition program used in the spectacle lens processing control data acquisition device for acquiring processing control data for processing the spectacle lens, and is executed by the processor of the spectacle lens processing control data acquisition device. ,
The first shape information acquisition step to acquire the eyeglass shape information and
The second shape information acquisition step of acquiring the facet shape information applied to the demo lens, which is the facet shape information detected from the demo lens for eyeglasses,
A processing control data acquisition step for acquiring facet processing control data for forming at least one plane on the lens surface of the spectacle lens based on the lens shape information and the facet shape information.
A spectacle lens processing control data acquisition program, characterized in that the spectacle lens processing control data acquisition device is executed.

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