JP6183591B2 - Eyeglass lens processing equipment - Google Patents

Description

  The present invention relates to a spectacle lens processing apparatus used for processing spectacle lenses.

  For example, a spectacle lens processing apparatus that processes a spectacle lens held by a lens chuck shaft using a grinding tool or a cutting tool is known (for example, Patent Documents 1 and 2).

  Patent Document 1 discloses a spectacle lens processing apparatus that performs processing after a cup, which is a processing jig, is attached to a spectacle lens by a blocking device.

  Patent Document 2 discloses a spectacle lens processing apparatus that does not attach a cup to a spectacle lens and processes the spectacle lens by directly holding the spectacle lens with a lens chuck shaft of the spectacle lens processing apparatus.

JP 2011-161619 A JP 2000-094283 A

  By the way, conventionally, in an eyeglass lens processing apparatus that processes without attaching a cup, by measuring optical characteristics such as the position of the optical center of the eyeglass lens or the direction of the astigmatism axis, the optics determined by the eyeglass lens and the layout data The position of the center or the direction of the target lens data was matched.

  However, in order to measure the optical characteristics of the spectacle lens, a complicated measurement optical system must be provided. This complicates the measurement optical system and increases the size of the apparatus.

  In view of the above-described problems of the prior art, it is an object of the present invention to provide a spectacle lens processing apparatus capable of processing spectacle lenses without necessarily providing a complicated measurement optical system.

  In order to solve the above problems, the present invention is characterized by having the following configuration.

(1) A processing tool for processing a spectacle lens, a first rotation mechanism for rotating a pair of lens chuck shafts that directly hold the spectacle lens about an axis, and driving the first rotation mechanism a first driving unit, and a first control unit for controlling the first driving unit, a eyeglass lens processing apparatus for processing the eyeglass lens based on target lens shape data and layout data, the spectacle lens A lens transport unit for transporting to the eyeglass lens processing apparatus; a lens holding portion provided in the lens transport unit for holding the spectacle lens; and the spectacle lens held by the lens holding portion; A second rotation mechanism for rotating the spectacle lens in the circumferential direction, a second drive unit for driving the second rotation mechanism, and a second control unit for controlling the second drive unit, Based on a detection result detected by a mark detection unit that detects a mark applied to the spectacle lens to define at least one of the optical center of the spectacle lens and the reference direction of the astigmatic axis, the lens chuck shaft The held optical center of the spectacle lens is aligned with the optical center determined by the layout data, and / or the reference direction of the astigmatic axis of the spectacle lens held on the lens chuck shaft and the astigmatic axis in the target lens data. Alignment means for aligning the reference direction, and the second control unit controls the second driving unit to rotate the spectacle lens held in the holding unit in the circumferential direction for alignment. It is characterized by that.

It is a figure which shows the external appearance schematic of the spectacle lens processing apparatus which concerns on 1st Embodiment. It is a figure explaining the structure of a lens conveyance unit. It is a figure explaining the composition of the tip part of the 1st hand. It is a figure explaining the composition of the tip part of the 2nd hand. It is a figure which shows the measurement optical system and control system of a mark detection unit. It is a schematic block diagram of a processing unit. It is a figure explaining the structure by the side of the chuck shaft which a processing unit has. It is a block diagram which shows the control system of 1st Embodiment. It is a figure which shows an example of the marking point given to the lens. It is a figure explaining the calculation method regarding target lens shape data. It is a figure which shows an example of the mark given to the spectacle lens. It is a figure explaining the modification form of 1st Embodiment. It is a figure explaining the modification form of 1st Embodiment. It is a figure which shows an example of the mark for up-and-down detection given to the spectacle lens. It is a figure which shows an example of the mark given to the spectacle lens.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The spectacle lens processing apparatus of the first embodiment is an spectacle lens processing apparatus for processing the peripheral edge of the spectacle lens. FIG. 1 is a schematic external view of the eyeglass lens processing apparatus according to the first embodiment. The eyeglass lens processing apparatus processes the eyeglass lens based on the target lens shape data relating to the target lens shape of the spectacle frame. The spectacle lens processing apparatus includes a spectacle lens processing unit (hereinafter abbreviated as a processing unit) 1000, a tray transport unit 1500, a lens transport unit 1200, and a mark detection unit 1300.

  The processing unit 1000 grinds the spectacle lens. The tray transport unit 1500 transports the tray 1400 on which the pair of left and right eyeglass lenses LE are placed to a predetermined delivery position. The lens conveyance unit 1200 holds and conveys the spectacle lens LE between the tray placed at a predetermined delivery position and the processing unit 1000. The mark detection unit 1300 detects various marks such as mark points applied to the spectacle lens held by the lens transport unit 1200, and measures the position or direction thereof. Hereinafter, the configuration of each device will be described in order.

<Lens transport unit>
First, the configuration of the lens transport unit 1200 will be described with reference to FIGS. The conveyance base 1201 extends in parallel with the processing unit 1000, the mark detection unit 1300, and the tray conveyance unit 1500. A rail 1202 is provided on the transport base 1201. Further, an X moving base 1210 that moves in the left-right direction (X direction) on the rail 1202 is attached to the transport base 1201. A ball screw 1204 is connected to a rotation shaft of a motor 1203 attached to the conveyance base 1201. A connection block 1211 fixed to the X movement base 1210 is screwed into the ball screw 1204. When the motor 1203 is driven to rotate, the X movement base 1210 moves on the transport base 1201 in the X direction.

  A Y movement base 1220 that moves in the front-rear direction (Y direction) along the guide shaft 1212 is mounted on the X movement base 1210. A ball screw 1215 connected to a motor 1214 is screwed to a lower portion of the Y moving base 1220. Then, the Y movement base 1220 moves in the Y direction by the rotational drive of the motor 1214. On the Y movement base 1220, a holder 1222 is pivotably attached. The holder 1222 includes a first hand 1230 that is a lens holding unit for sucking and holding an unprocessed lens LE, and a second hand 1240 that is a holding unit for sucking and holding the processed lens LE. The holder 1222 is rotated 180 degrees via a gear by a motor 1221 housed in the Y movement base 1220. The first hand 1230 and the second hand 1240 are held by a holder 1222 so as to be movable in the vertical direction (Z direction) by motors 1231, 1241, respectively.

  As described above, the lens transport unit 1200 is provided with the first hand 1230 or the second hand 1240 which is a lens holding unit for holding the lens LE.

  An adsorption base 1232 is fixed to the end of the first hand 1230. As shown in FIG. 3, the tip of the adsorption base 1232 is formed in a substantially U shape. This is to prevent the adsorption base 1232 from getting in the way when a mark such as a marking point is detected by the mark detection unit 1300 described later. In addition, three suction pieces 1233 projecting downward to suck the surface of the unprocessed lens LE on the suction base 1232 are equidistant from each other about the holding reference axis L101 in the XY direction of the first hand 1230. Is provided. Each suction piece 1233 is provided with a suction hole, and the suction hole communicates with the tube 1235 through an air passage formed inside the suction base 1232 and the first hand 1230. The tube 1235 is connected to a pump unit 1236 that sucks and discharges air. By the suction drive of the pump unit 1236, the raw lens LE is sucked and held by three sucking pieces 1233, and conversely, the air is sent by sending air. Adsorption holding is released.

  On the other hand, an adsorption base 1242 is fixed to the end of the second hand 1240. As shown in FIG. 4, a trumpet-shaped suction piece 1243 that protrudes downward is provided on the tip side of the suction base 1242 around the holding reference axis L <b> 102 in the XY direction of the second hand 1240. . The suction piece 1243 is also provided with a suction hole. The suction piece 1243 is connected to the pump unit 1246 via the tube 1245 in the same manner as the first hand 1230, so that the processed lens LE is held by the suction piece 1243 and released.

  In addition, about a lens holding | maintenance part (for example, 1st hand or 2nd hand), it is not limited to the structure of this embodiment. For example, it is good also as a structure which clamps the periphery of the lens LE. It is preferable that the mark detection unit 1300 can detect a mark such as a marking point while holding the lens LE. In addition, it is preferable that the holding portion for holding the lens LE does not overlap with a mark such as a marking point provided on the lens LE. Of course, the mark detection unit 1300 may be provided with a lens placement portion for placing the lens LE, and the lens LE may be placed on the lens placement portion by the holding portion of the lens LE. With such a configuration, it is not necessary to consider the shape of the holding portion so that the holding portion (for example, the adsorption base portion 1232) holding the lens LE does not overlap with a mark such as a marking point applied to the lens LE.

  As described above, the lens transport unit 1200 transports the lens LE to the lens processing unit 1000.

<Mark detection unit>
A case 1301 of the mark detection unit 1300 has a substantially U-shaped side surface, and a measurement optical system and a control system shown in FIG.

  The mark detection unit 1300 includes, for example, an illumination optical system that illuminates the entire lens, and an imaging optical system that includes an image sensor that captures a contour image and a mark mark of the lens illuminated by the illumination optical system.

  For example, the control unit 1310 extracts a mark mark in a captured image captured by the image sensor by image processing. For example, the mark mark defines at least one of the position of the optical center of the spectacle lens and the reference direction of the astigmatism axis. Therefore, the control unit 1310 acquires position data of the optical center of the spectacle lens and reference direction data of the astigmatic axis based on the extracted mark mark.

  The difference from the optical system that measures the optical characteristics of the lens may be, for example, that the illumination light has a wide irradiation range, or that there is no target plate provided on the front or rear surface of the lens. Further, when measuring the optical characteristics, the mark mark is not detected.

  In FIG. 5, a reflective member 1305 and the like are disposed in the housing 1301 on the back side of the lens LE at the measurement position. An illumination light source 1302, a collimator lens 1303, a half mirror 1306, a diaphragm 1307, an imaging lens 1308, and an imaging element 1309 are disposed on the surface side of the lens LE. The reflection member 1305 reflects the illumination light from the illumination light source 1302 and illuminates the lens LE from the back surface. The image sensor 1309 captures a mark such as a mark provided on the surface of the illuminated lens LE and a lens image. The focus position of the image sensor 1309 is adjusted by the imaging lens 1308 to the vicinity of the surface of the lens LE disposed on the measurement optical axis L100. As a result, various marks and lens images such as mark marks attached to the surface of the lens LE are picked up by the image pickup device 1309 in a substantially focused state. The mark detection unit 1300 may detect an image of the entire lens, or may detect an image of a part of the lens.

  The raw spectacle lens LE is held by the first hand 1230 included in the lens transport unit 1200 described above, and the XY direction is positioned so that the reference axis L101 of the first hand 1230 coincides with the measurement optical axis L100. The

  Note that the mark detection unit 1300 is not limited to the above-described configuration, and it is sufficient that the mark detection unit 1300 can detect the position of a mark such as a mark provided on the surface of the lens LE. Further, it is not always necessary to acquire an image of the lens LE as in the present embodiment.

  As described above, the mark detection unit 1300 detects a mark in which the optical center of the lens attached to the lens and the reference direction of the astigmatism axis are defined.

<Tray transport unit>
In FIG. 1, the tray transport unit 1500 includes, for example, a belt conveyor 1501, and the tray 1400 on the belt conveyor 1501 is sequentially moved in the arrow A direction. The conveyance of the tray 1400 is stopped at a predetermined position Q1 where the lens conveyance unit 1200 delivers the lens LE. An ID tag 1401 in which work numbers of a pair of left and right lenses are stored is attached to the tray 1400. The work number of the ID tag of the tray 1400 stopped at the position Q1 is read by the ID tag reader 1502. The tray transport unit 1500 is provided with a control unit 1510 and controls each drive of the tray transport unit 1500.

<Processing unit>
Next, the structure of the processing unit 1000 will be described with reference to FIGS. The processing unit 1000 can sandwich and rotate a spectacle lens LE on which a processing jig is not mounted by an upper chuck shaft 1111 and a lower chuck shaft 1121 extending vertically as lens chuck shafts. The upper chuck shaft 1111 is moved up and down by a chuck upper mechanism 1110 provided at the center of the sub-base 1102 and is rotated by a pulse motor 1113 attached to the holder 1112. A lens presser 1115 is attached to the lower end of the upper chuck shaft 1111 (see FIG. 7).

  The lower chuck shaft 1121 is rotatably held by a holder 1120 fixed to the main base 1101 and is rotated in synchronization with the upper chuck shaft 1111 by a pulse motor 1123.

  That is, the upper chuck shaft 1111 and the lower chuck shaft 1121 are configured such that the first control unit (for example, the control unit 1160) controls the driving of the first driving unit (for example, the pulse motor 1113, the pulse motor 1123, etc.) Is rotated by rotating a first rotation mechanism for rotating the shaft around the axis.

  A suction member 1130 having a rubber suction portion 1130a is attached to the upper end of the lower chuck shaft 1121 (see FIG. 7). The suction portion 1130a is formed in a trumpet shape with a depressed central portion. A pump unit 1135 that sucks and discharges air is connected to the central portion of the lower chuck shaft 1121 through an air passage 1131 having a suction hole. When the lens LE is set on the suction member 1130 by the lens transport unit 1200, the upper chuck shaft 1111 is lowered and the suction operation of the pump unit 1135 is operated. As a result, the lens can be held so as not to move during processing. When the lens LE is removed, the suction holding is released by sending out air.

  The eyeglass lens LE held on the upper and lower chuck shafts is viewed from two directions by left and right lens grinding portions 1150R and 1150L having a grindstone group 1151 (for example, a finishing grindstone having a plastic rough grindstone and a bevel groove) on a grindstone rotating shaft. Grinded. The lens grinding portions 1150R and 1150L are left-right symmetric, and are moved in the vertical and horizontal directions by the moving mechanisms provided in the sub-base 1102, respectively.

  A lens shape measuring unit (not shown) is housed in the back side of the center of the sub base 1102. The measurement operation of the lens shape measurement unit, the movement of the lens grinding units 1150R and 1150L, and the rotation angle of the upper and lower chuck shafts are controlled based on data input to the control unit 1160 described later. The configuration excluding the lower chuck shaft portion can be the same as that disclosed in Japanese Patent Application Laid-Open No. 8-97445 by the applicant of the present application. Refer to this for details.

  In addition, although the processing unit of this embodiment shall grind by the lens grinding parts 1150R and 1150L, it is not restricted to this. The lens may be cut with a cutting tool or the like.

  In addition, although the chuck shaft of this embodiment shall hold | maintain a lens by suction, it is not limited to this. For example, a configuration may be adopted in which the lens is adhered and held with an adhesive resin or the like. The lens chuck shaft only needs to hold the lens LE.

  Further, the processing unit 1000 is not limited to the configuration of the present embodiment. For example, a configuration in which a plurality of cutting tools are provided and the lens is automatically cut may be employed. It suffices if the lens can be processed to match the lens shape of the spectacle frame. The processing unit 1000 processes the lens LE based on the lens shape data of the spectacle frame.

<Control system>
The control system of this embodiment will be described with reference to the drawings. FIG. 8 is a block diagram showing a control system of the present embodiment. The lens transport unit 1200 includes a control unit 1250, the mark detection unit 1300 includes a control unit 1310, and the processing unit 1000 includes a control unit 1610. Each control unit controls driving of each device. Each control unit is connected to a host computer (hereinafter abbreviated as “host PC”) 1030 and an ID tag reader 1502, and can communicate wirelessly or by wire. The host PC is provided with an input means (not shown) and can input lens data and the like. The host PC 1030 may include a memory 1031 as a storage unit.

  Note that the control unit 1310 can acquire from the mark detection unit 1200 the detection result of the mark that defines the optical center of the lens LE applied to the spectacle lens LE and the reference direction of the astigmatic axis or the top and bottom of the lens LE. Further, the control unit 1310 may be used as an up / down detection unit that detects the up / down of the spectacle lens LE based on the acquired detection result of the mark. In the present embodiment, the mark detection unit 1200 captures an image of a mark such as a mark. The control unit 1310 may analyze the direction of the mark from the image captured by the mark detection unit 1200 and may be a vertical detection unit for detecting the vertical direction of the lens LE.

  Next, in the spectacle lens processing apparatus having the above-described configuration, an operation when detecting a mark on the lens will be described.

  First, lens data such as eyeglass frame lens shape data, layout data, and lens prescription column face axis angle data is input to the host PC 1030 by the operator. A work number is assigned to each input lens data, and the work number is registered in the ID tag 1401 of the lens tray 1400. In the lens tray 1400, the lens LE of the specification read from the host PC 1030 by the work number is set on the tray 1400 in a pair of left and right. The lens LE is preliminarily provided with marks such as an optical center of the lens LE and an astigmatic axis direction or a mark that defines the top and bottom of the lens LE by an unillustrated marking device (or printer). Details of this mark will be described later.

  When the lens LE is set on the tray 1400, the lens LE is set so that the approximate center of each lens comes to a predetermined point on the tray 1400. Thereafter, the tray 1400 on which the lens LE is set is sequentially placed on the belt conveyor 1501 of the tray transport unit 1500 (these steps may be performed by an operator, but can be further automated if configured to be performed automatically by a robot. ).

  When the setting of the tray 1400 is completed, the control unit 1510 of the tray transport unit 1500 operates the belt conveyor 1501 to perform transport. When the tray 1400 comes to a predetermined position for lens delivery, the movement is stopped. At this time, the ID tag reader 1502 reads the ID tag work number attached to the tray 1400, and the signal is input to the host PC 1030. The host PC 1030 transmits data relating to lens processing corresponding to this work number to the processing unit 1000.

  Further, the host PC 1030 transmits an operation command signal to the lens transport unit 1200 when the tray 1400 is carried to a predetermined position. The control unit 1250 of the lens transport unit 1200 drives and controls each motor, and transports the lens to the measurement position of the mark detection unit 1300 as follows. First, the X movement base 1210 and the Y movement base 1220 are moved so that the holding reference axis L101 of the first hand 1230 comes to a predetermined point on the tray 1400 on which one lens LE is placed. As a result, the optical center of the lens LE is positioned in the vicinity of the reference axis L <b> 101 in the substantially U shape formed in the adsorption base 1232. Thereafter, the first hand 1230 is lowered to the suction position, and suction by the pump unit 1236 is started, so that the lens LE for the right eye is sucked and held by the three suction pieces 1233.

  When the lens LE can be held, the first hand 1230 is once raised, and then the first hand 1230 is turned 180 degrees together with the holder 1222 so that the first hand 1230 faces the mark detection unit 1300 side. Thereafter, the X movement base 1210 and the Y movement base 1220 are moved, and the lens LE is conveyed to a position where the holding reference axis L101 of the first hand 1230 coincides with the measurement optical axis L100 of the mark detection unit 1300. Position the lens LE at a height. Thereby, the arrangement of the lens LE at the measurement position is completed.

  When the arrangement of the lens LE is completed, a measurement start signal is input from the host PC 1030 to the mark detection unit 1300, and the control unit 1310 adds marks such as mark marks applied to the lens LE from the lens image obtained from the image sensor 1309. To detect.

  Here, the optical center of the lens LE applied to the lens LE and the reference points defining the reference direction of the astigmatism axis or the top and bottom of the lens LE will be described. The upper and lower sides of the lens LE are the upper and lower sides of the lens LE when the lens LE is fitted in the spectacle frame. Therefore, the upper and lower sides of the lens LE are different from the upper and lower sides in the X direction, Y direction, and Z direction.

  FIG. 9 shows an example of a marking point applied to the lens. A total of four marking points 2120a, 2120b, 2120c, and 2120d are provided on the surface of the lens LE. Of these, the mark points 2120a, 2120b, and 2120c are arranged on a straight line. The mark point may be an ink mark or a seal mark. A mark 2120a indicates the optical center of the spectacle lens. The mark points 2120b and 2120c are arranged on the left and right with the mark point 2120a as the center, and the straight line connecting the mark points 2120b and 2120c indicates the reference axis direction (horizontal direction) that defines the astigmatic axis angle of the lens LE. The marking point 2120d has a role of indicating the top and bottom of the spectacle lens, and is marked above the marking point 2120a.

  The control unit 1310 analyzes the lens image captured by the image sensor 1309 and obtains the center coordinates of the mark points 2120a to 2120d. At this time, the control unit 1310 is set to identify that the center of the mark points arranged on the straight line is the mark point 2120a and the left and right of the mark point 2120a are the mark points 2120b and 2120c. Further, it is set so that the mark point deviating from the straight line in which the three mark points are arranged is identified as the mark point 2120d. The control unit 1310 obtains the eccentricity information with respect to the measurement optical axis L100 from the center coordinates of the mark point 2120a. That is, this is eccentric position information with respect to the holding reference axis L101 of the first hand 1230. Further, the horizontal direction of the lens is acquired from the center coordinates of the mark points 2120a, 2120b, and 2120c. The horizontal direction of the lens is a direction that defines the astigmatic axis angle of the lens, and this direction coincides with the horizontal direction of the patient when the lens is worn on the patient as eyeglasses.

  Next, the control unit 1310 detects the up and down of the spectacle lens LE based on the position of the mark point 2120d with respect to the mark points 2120a, 2120b, and 2120c. For example, when the lens LE is divided into two regions by a straight line connecting the mark points 2120a, 2120b, and 2120c, the control unit 1310 detects that the region where the mark point 2120d is marked is the upper part (upper side) of the lens. May be programmed to do so. Further, when the control unit 1310 divides the lens LE into two areas by a straight line connecting the mark points 2120a, 2120b, and 2120c, the detection is made that the area where the mark point 2120d is marked is the upper part (upper side) of the lens. The reference is stored in the memory 1031. And control part 1310 is good also as what detects the up-and-down of a lens based on a detection standard from the detection result of mark points 2120a-2120d.

  The control unit 1310 acquires the processing condition data including the vertical detection information of the lens LE or the horizontal direction of the lens and the decentering information of the optical center with respect to the holding reference axis L101 by the above method, and transmits the processing condition data to the host PC 1030.

  When the measurement by the mark detection unit 1300 is completed, the lens transport unit 1200 transports the lens LE held by the first hand 1230 to the processing unit 1000. By moving the first hand 1230 in the X and Y directions, the lens LE is placed so that the rotation axis L103 of the chuck shaft of the machining unit 1000 and the reference axis L101 of the first hand 1230 coincide with each other. The lens LE is set on the suction member 1130 by the lowering operation.

  Thereafter, the suction on the first hand 1230 side is released, the rear surface side of the lens LE is suctioned to the suction member 1130 by the suction operation of the pump unit 1135, and the upper chuck shaft 1111 is lowered. Thereby, the lens LE is chucked while the state at the time of measuring the mark point position is maintained. The first hand 1230 that has released the suction of the lens LE is detached from the processing unit 1000.

  When the lens LE is set on the suction member 1130, if the optical center of the lens LE is greatly deviated from the rotation axis L103 of the chuck shaft, the accuracy of the processed shape may be affected. For this reason, the host PC 1030 detects whether the eccentricity of the optical center obtained by the mark detection unit 1300 is within a predetermined range (for example, 10 mm), and when it exceeds this, the first eccentricity is corrected so as to correct the eccentricity. The lens may be set by controlling the movement of the hand 1230.

  When the chucking of the lens LE is completed, the host PC 1030 then outputs the processing condition data obtained by the mark detection unit 1300 to the processing unit 1000 to start processing. The control unit 1160 of the processing unit 1000 adds processing condition data to the eyeglass frame data, layout data, lens prescription column surface axis angle data, and the like, which are input in advance, and the eccentricity of the optical center with respect to the rotation axis L103. Then, machining data in which the amount of deviation in the horizontal direction is corrected is calculated. This processing data may be obtained on the host PC 1030 side.

  As a calculation method, for example, as shown in FIG. 10, the radius information (rn, θn) of the target lens data with respect to the target geometric center F0 is coordinate-converted with reference to the lens rotation center G0. Thus, new radius vector information (r′n, θ′n) is obtained. When converting, the coordinate position of the optical center O0 determined by the layout data with respect to the geometric center F0 and the coordinate position of the lens rotation center G0 determined from the processing condition data with respect to the coordinate position of the optical center O0 may be used. .

  As for the astigmatic axis angle, the lens centered on the optical center O0 is corrected so as to correct the horizontal displacement of the lens LE obtained by detecting the mark points 2120a to 2120c with respect to the horizontal direction of the target lens shape data. This is obtained by converting the target lens shape of the mold data into a rotated radial shape.

  When the lens shape data is corrected with respect to the astigmatic axis angle, similarly, for example, the optical center O0 is set so that the upper and lower sides of the lens shape data and the upper and lower sides of the lens obtained by detecting the mark point 2120d are aligned (matched). It is obtained by converting the target lens shape of the target lens data into a radial shape rotated 180 degrees around the center.

  In this way, the control unit 1310 first detects the three mark points 2120a, 2120b, and 2120c, thereby reading the horizontal direction that defines the optical center of the lens LE and the astigmatic axis of the lens LE. The horizontal direction defining the optical center and the astigmatic axis of the lens LE is aligned with the horizontal direction defining the optical center and the astigmatic axis of the target lens data. Further, the control unit 1310 detects the mark point 2120d, thereby aligning the upper and lower sides of the lens LE during processing with the upper and lower sides of the target lens data.

  Note that the upper and lower sides of the target lens shape data are the upper and lower sides of the original spectacle frame from which the target lens shape data was acquired. Therefore, the upper and lower directions of the target lens shape data are different from the vertical directions of the X direction, the Y direction, and the Z direction.

  As described above, the control unit 1310 corrects the target lens shape data by calculation, whereby the position of the optical center of the spectacle lens LE and the direction of the astigmatic axis, the position of the optical center determined by the layout data, and / or the target lens shape. It may be used as an alignment means for aligning the direction of the astigmatism axis of data.

  Thereafter, based on the calculated processing data, the control unit 1160 moves the lens rotation angle and the lens grinding units 1150R, 1150L with respect to the lens (the distance between the chuck shaft and the grindstone rotation axis, the axis of the grindstone rotation shaft with respect to the spectacle lens LE). Machining is performed while controlling the direction position. As a result, the spectacle lens LE is processed into a predetermined shape with high accuracy.

  When the lens LE is set at the chucking position by the chuck shafts 1111 and 1121, it is performed as described above, and the eccentricity of the optical center position is corrected by the XY movement control of the first hand 1230. Also good. That is, the lens rotation center may coincide with the optical center. Further, the frame center processing can be performed so that the geometric center of the spectacle frame coincides with the center of lens rotation.

  In this way, the host PC 1030 selects in advance whether the reference axis L1 of the first hand 1230, the optical center of the lens, or the geometric center of the spectacle frame matches the lens rotation center. You should do it. Further, the host PC 1030 may determine and select the processing shape to be stable based on the target lens shape data and the layout data.

  Thus, when the lens LE is set by the XY movement control of the first hand 1230, the processing data is obtained on the host PC 1030 side, and the movement control is performed by the host PC 1030.

  When the processing of the spectacle lens LE is completed, a processing end signal is transmitted to the host PC 1030. The host PC 1030 operates the lens transport unit 1200 again. The processed lens is conveyed by the second hand 1240. After the second hand 1240 is turned to the machining unit 1000 side and the upper chuck shaft 1111 on the machining unit 1000 side is raised, the second hand 1240 is moved to the position where the holding reference axis L102 of the second hand 1240 coincides with the rotation axis L103 of the chuck shaft. The hand 1240 moves. Thereafter, the suction on the lower chuck shaft 1121 side is released, and the processed lens is sucked and held by the suction piece 1243 of the second hand 1240. When the lens can be held, the lens is conveyed and returned to the tray 1400 again by moving and rotating the second hand 1240 in the XYZ directions.

  When one lens can be processed, the other lens is then transported in the same procedure and processed automatically. Thereafter, the conveyance and processing of the lens placed on each tray 1400 are automatically repeated.

  As described above, when detecting a mark such as a mark, for example, the measurement unit (in this embodiment, the mark detection unit 1300) only needs to detect the position of the mark. Therefore, the predetermined position (for example, the optical center) or the predetermined direction (for example, the reference direction of the astigmatism axis) of the lens can be easily obtained rather than detecting the optical characteristics of the lens.

  For example, when detecting a mark such as a mark on a spectacle lens, the configuration of the apparatus becomes simpler than when measuring the optical characteristics of the spectacle lens. For example, when a mark such as a mark is detected, the mark such as a mark attached to the lens may be imaged by at least one image sensor. This is because a measurement optical system for measuring the optical characteristics of the lens is not necessarily required. As an optical system for measuring the optical characteristics of a lens, for example, there is an optical system provided in a cup mounting device disclosed in Japanese Patent Application Laid-Open No. 2008-299140. The optical system that detects the mark attached to the lens does not require, for example, an index plate used for measuring optical characteristics. The optical system for detecting a mark such as a mark applied to the lens is not limited to the configuration of the present embodiment. For example, the optical system includes at least one image sensor and can capture an image of a mark or a lens image applied to the lens. Good. For example, an imaging device and an illumination light source may be provided on the surface side of the lens. Of course, the eyeglass lens processing apparatus of this embodiment may include a measurement optical system for measuring the optical characteristics of the lens.

  For example, a calculation method executed by a computer such as a CPU is also simplified. For example, it becomes easy to obtain the position of the optical center of the lens necessary for aligning the position and direction of the rotation center of the lens and the lens chuck shaft. When detecting the optical characteristics of the lens, for example, light that has passed through the lens and the index plate is projected onto a screen to capture an image, and the optical center of the lens is obtained based on the positional deviation of the captured index image. Since it is necessary to calculate the deviation of the plurality of captured index images, the calculation for obtaining a predetermined position or a predetermined direction such as the optical center is complicated. In comparison with this, in the case of detecting the mark point applied to the lens, for example, it is only necessary to detect the center coordinates of the mark point by image processing.

  In the spectacle lens processing apparatus according to the present embodiment, since only a mark provided in advance by a marking device (for example, a marking device) is detected, the predetermined position or the predetermined direction of the lens can be detected with high accuracy. .

  Further, in a lens with a small amount of prism, it becomes more difficult to detect the optical characteristics of the lens. Therefore, it is difficult to process a lens having a small prism amount by the method of obtaining the predetermined direction and the predetermined direction of the lens by detecting the optical characteristics of the lens.

  As described above, even when processing a lens with a small amount of prism, a predetermined position or a predetermined direction can be easily obtained and processed by a method for detecting a mark point applied to the lens.

  For example, when the optical center is not located at the geometric center of the spectacle lens before processing, it is difficult to obtain the optical center by measuring optical characteristics.

As described above, even when the optical center is not located at the geometric center of the spectacle lens, if the mark is applied to the optical center in advance, the predetermined position of the mark can be easily detected by image processing.
In the above description, the mark detection unit 1300 detects the mark applied to the lens LE in order to define the optical center of the lens LE and the reference direction of the astigmatism axis. In this apparatus, the optical center of the lens LE held on the lens chuck shaft and the reference direction of the astigmatism axis are aligned with the optical center determined by the layout data and the reference direction of the astigmatism axis in the target lens data. However, it is not limited to this.

  For example, the mark detection unit 1300 detects a mark applied to the lens LE in order to define the optical center of the lens LE. The apparatus may align the optical center of the lens LE with the optical center determined by the layout data.

  Further, for example, the mark detection unit 1300 detects a mark given to the lens LE in order to define the reference direction of the astigmatic axis of the lens LE. The apparatus may align the reference direction of the astigmatic axis of the lens LE held on the lens chuck shaft with the reference direction of the astigmatic axis in the target lens shape data.

  As described above, the spectacle lens processing apparatus of the present embodiment is a mark detection unit that detects a mark applied to the lens LE in order to define at least one of the optical center of the spectacle lens and the reference direction of the astigmatism axis. The optical center of the lens LE held on the lens chuck shaft is aligned with the optical center determined by the layout data on the basis of the detection result detected by, and / or the astigmatic axis of the lens LE held on the lens chuck shaft. The reference direction and the reference direction of the astigmatism axis in the target lens shape data may be matched. Note that, as means for aligning them, for example, lens position control by the control unit 1160 may be included, and the control unit 1160 may include position control of target lens data.

  As a method for detecting the mark point, if the mark point is left when the spectacle lens is assembled to the frame, it is easy to perform a measurement inspection of the interpupillary distance.

  Further, as described above, by detecting marks such as mark points that define the upper and lower sides of the lens, it is possible to automatically detect the upper and lower sides of the lens LE having different optical characteristics in the upper, lower, left and right directions. As a result, it is possible to prevent the lens from being processed in the wrong direction. Further, by automatically detecting the up and down of the lens LE, it is possible to save the operator from having to determine the up and down of the lens and to improve the working efficiency.

  Further, as described above, the operator can automatically detect the top and bottom of the lens, and based on the detection result, correct the processing data for processing the lens or automatically correct the direction of the lens LE. Can save the trouble of changing the direction or position of the lens. In other words, by providing a configuration for aligning the upper and lower sides of the spectacle lens with the upper and lower sides of the target lens shape, work efficiency when processing the lens is increased.

  Examples of the aligning unit include a rotation mechanism that rotates the lens (for example, a first rotation mechanism or second to third rotation mechanisms that will be described later), or a drive unit that drives the rotation mechanism (for example, the first drive unit or which will be described later). 2nd-3rd drive part), the control part (For example, 1st control part or the 2nd-3rd control part mentioned later) etc. which control a drive part are contained.

  In the eyeglass lens processing apparatus according to the present embodiment, a mark (for example, marking points 2120a to 2120c) that defines the direction of the astigmatic axis of the lens LE detected by the mark detection unit and a mark (for example, the upper and lower sides of the lens LE). Based on the detection result of the mark point 2120d), the alignment means (for example, the control unit 1310) aligns the direction defining the astigmatism axis of the lens LE with the direction defining the astigmatism axis of the target lens data. Furthermore, it can also be expressed as a spectacle lens processing apparatus that aligns the upper and lower sides of the lens LE during processing with the upper and lower sides of the target lens data. However, the mark that defines the direction of the astigmatic axis of the lens LE is not limited to a mark point (for example, the mark points 2120a to 2120c), but may be an optical characteristic and an optical characteristic portion of the lens LE.

  Note that the direction of the lens does not have to be automatically corrected by the apparatus as in this embodiment, and the direction or position of the lens may be manually changed by the operator based on the detection result of the up / down direction of the lens.

  Although the lens processing apparatus of the present embodiment reads the mark points 2120a to 2120d shown in FIG. 9 and detects the top, bottom, left, and right of the lens LE, the mark points that can be detected vertically are not limited thereto. For example, it may be a mark as shown in FIG. FIGS. 11A to 11D are diagrams showing examples of mark points that can be detected vertically. In FIG. 11A, the mark points 2121a, 2121b, 2121c and 2121d are linearly provided. A mark 2121a indicates the optical center of the spectacle lens. The mark points 2121b and 2121c are arranged on the left and right with the mark point 2121a as the center, and the straight line connecting the mark points 2121b and 2121c indicates the reference axis direction (horizontal direction) that defines the astigmatism axis. Mark points 2121d indicate the top and bottom of the spectacle lens.

  The mark points 2121a, 2121b, 2121c are marked at equal intervals, and the interval between them is set to 16 mm. The marking point 2121d is marked outside the marking point 2121c with an interval of 10 mm. The control unit 1310 can distinguish the outer mark point 2121b and the mark point 2121d from the difference in the mark point interval. That is, it can be seen that the outer mark point with the smaller interval between the adjacent mark points is the mark point 2121d, and the one with the wider interval is the mark point 2121b. It can also be seen that the mark point 2121b is adjacent to the mark point 2121a, and the mark point 2121d is adjacent to the mark point 2121c. If the mark point 2121d can be identified, the up / down / left / right direction of the lens LE can be detected.

  For example, in the arrangement of the mark points in FIG. 11A, the upper and lower sides of the lens when the mark point 2121d is arranged on the right side with respect to the mark point 2121a coincides with the upper and lower sides on the optical characteristics of the lens. On the contrary, when the mark point 2121d is arranged on the left side, the upper and lower sides of the lens are opposite to the upper and lower sides in terms of optical characteristics. In this way, by detecting the mark points in FIG. 11A, the up / down / left / right directions of the lens may be automatically detected, and the top / bottom of the lens LE and the top / bottom of the target lens may be aligned by calculation. Since the images of the mark points 2121a to 2121d are also arranged in the same manner, the control unit 1310 can similarly detect the up and down directions based on the mark point image obtained by the image sensor.

  Moreover, as a mark which can be detected up and down, for example, a mark as shown in FIG. In FIG. 11B, the mark points 2122a, 2122b, and 2122d are provided in a straight line. A mark 2122a indicates the optical center of the spectacle lens LE. The mark points 2122b and 2122d are arranged on the left and right with the mark point 2122a as the center, and the straight line connecting the mark points 2122b and 2122d indicates the reference axis direction (horizontal direction) that defines the astigmatism axis. Further, the mark point 2122d is a cross-shaped mark unlike the mark points 2122a and 2122b. The control unit 1310 identifies the image of the mark point 2122a and the image of the mark point 2122d by the difference between the marks of the mark points.

  Even at the mark point of such an arrangement, the control unit 1310 can detect the up and down of the lens by detecting whether the image of the mark point 2122d exists on the left or right side of the image of the mark point 2122a.

  Moreover, as a mark which can be detected up and down, for example, a mark as shown in FIG. In FIG. 11C, the marking points 2123a, 2123b, and 2123d are linearly applied. A mark 2123a indicates the optical center of the spectacle lens LE. The mark points 2123b and 2123d are arranged on the left and right with the mark point 2123a as the center, and the straight line connecting the mark points 2123b and 2123d indicates the reference axis direction (horizontal direction) that defines the astigmatism axis. In addition, the marking points 2123a and 2123b are marked in red, whereas the marking point 2123d is marked in blue. The control unit 1310 identifies the image of the mark point 2123a and the image of 2123d by the color difference.

  Even at such a mark point, the control unit 1310 can detect whether the image of the mark point 2123d exists on the left or right side of the image of the mark point 2123a, thereby detecting the top and bottom of the lens.

  Moreover, as a mark which can be detected up and down, for example, a mark as shown in FIG. A total of two marking points 2124a and 2124d are provided at the marking points in FIG. A mark 2124a indicates the optical center of the spectacle lens. The marking point 2124d is provided below (or above) the marking point 2124a. The linear direction of the line-shaped mark point 2124d indicates the reference axis direction (horizontal direction) of the astigmatic axis.

  Even at such a mark point, the control unit 1310 can detect the top and bottom of the lens by detecting the position of the image of the mark point 2124d with respect to the image of the mark point 2124a.

Thus, there are a wide variety of mark points that can detect the upper and lower sides of the lens, and various mark points can be used in the eyeglass lens processing apparatus of the present embodiment.
In the eyeglass lens processing apparatus of the present embodiment, the mark point is detected as a mark that defines the top and bottom of the lens LE, and the top and bottom and left and right directions of the lens LE are detected. However, the present invention is not limited thereto. For example, it is also possible to detect the top and bottom of the lens by detecting the layout mark printed on the progressive focus lens.

  In the present embodiment, it has been described that the processing data is corrected based on the detection results of the upper and lower sides of the lens LE in order to match (match) the upper and lower sides of the lens LE and the upper and lower sides of the target lens shape. For example, when a mark that can be detected vertically is detected by the mark detection unit 1300, the first control unit (for example, the control unit 1310) controls the first drive unit for driving the first rotation mechanism. The first control unit controls the first driving unit to rotate the upper and lower chuck shafts around the axis. Accordingly, the lens LE attracted and held by the attracting member 1130 can also be rotated, and the lens LE is correctly oriented with respect to the processing unit 1000 in order to align (match) the top and bottom of the lens LE with the top and bottom of the target lens shape. Can be arranged. Thus, the control unit 1310 does not need to invert the processing data in order to correctly process the lens LE up and down, and the control program can be simplified.

  Similarly, the optical center determined by the direction of the optical center of the lens or the astigmatic axis and the layout data from the detection result of the mark such as the marking point by the alignment means such as the first rotation mechanism, the first control unit, and the first driving unit. Alternatively, the direction of the astigmatic axis of the target lens data may be matched.

  For example, the alignment means has a drive source (for example, a motor), a first rotation mechanism for rotating a pair of lens chuck shafts that directly hold the spectacle lens around the axis, and a first rotation mechanism (for example, A first drive unit for driving the drive source), and a first control unit for controlling the first drive unit, and the first control unit controls the first drive unit to rotate the lens rotation shaft. The position of the optical center and the direction of the astigmatism axis of the spectacle lens directly held by the lens rotation axis may be matched with the position of the optical center determined by the layout data and the direction of the astigmatism axis of the target lens shape data.

  Further, as a method for inverting the lens LE up and down, for example, a configuration in which the angle of the lens attracted to the first hand 1230 is changed based on the detection result of the upper and lower sides may be used. For example, as shown in FIG. 12, a turntable 1234 (second rotation mechanism) with a hole in the center rotates around the holding reference axis L101 at the suction base 1232 at the end of the first hand 1230 (holding portion). Suppose that it is possible. The rotating disk 1234 is provided with a suction piece 1233. Then, the driving of the driving unit 1601 (second driving unit) is transmitted to the rotating disk 1234 by the drive transmitting unit 1602, so that the rotating disk 1234 rotates around the holding reference axis L101.

  In such a configuration, when a mark that can be detected vertically is detected by the mark detection unit 1300, the control unit 1310 (second control unit) controls the drive unit 1601 based on the information related to the vertical movement of the lens, and rotates. The board 1234 is rotated. Accordingly, the lens LE attracted and held by the attracting piece 1233 can also be rotated, and the lens LE is correct with respect to the processing unit 1000 in order to align (match) the top and bottom of the lens LE with the top and bottom of the target lens shape. It can be arranged in the direction. By setting the lens LE on the suction member 1130 in this state, the control unit 1310 does not need to invert the processing data in order to correctly process the lens LE up and down, and the control program can be simplified.

  Similarly, the optical center determined by the optical center or astigmatic axis direction of the lens and the layout data from the detection result of the mark such as the mark point by the alignment means such as the second rotation mechanism, the second control unit, and the second drive unit. Alternatively, the direction of the astigmatic axis of the target lens data may be matched.

  For example, the alignment means includes a second rotation mechanism for rotating the spectacle lens held by the lens holding portion in the circumferential direction of the spectacle lens, a second drive unit for driving the second rotation mechanism, and a second drive unit. A second control unit that controls the optical center of the spectacle lens by controlling the second driving unit to rotate the spectacle lens held in the lens holding unit in the circumferential direction. And the direction of the astigmatism axis may be aligned with the position of the optical center determined by the layout data and the direction of the astigmatism axis of the target lens shape data.

  Further, as a method of inverting the lens LE up and down, for example, a method of adjusting the lens position in the mark detection unit 1300 can be considered. For example, the mark detection unit 1300 shown in FIG. 13 includes a lens placement portion 1621 (first lens placement portion) that can rotate around the measurement optical axis L100, and the lens placement portion that rotates in the circumferential direction of the lens LE. And a third driving unit 1623 for driving the lens mounting unit 1621 is provided. In such a case, when the lens LE is placed on the lens placement unit 1621 by the first hand 1230, the measurement optical system starts measuring the lens LE. When the lens information such as the optical center of the lens LE, the horizontal method, and the upper and lower positions is acquired based on the detection result of the mark such as the mark, the control unit 1310 (third control unit) rotates the third drive unit 1623. Thus, the lens mounting portion 1621 can be rotated to rotate the lens LE in the circumferential direction, so that the lens LE can be adjusted in a direction suitable for the processing apparatus. When the direction of the lens LE is adjusted, the lens LE may be sucked and held again by the first hand 1230 and transported to the processing apparatus. Thereby, the means for measuring the upper and lower sides of the lens LE and the means for correcting the direction of the lens can be integrated into the mark detection unit 1300.

  Similarly, the optical center determined by the optical center or astigmatic axis direction of the lens and the layout data from the detection result of the mark such as the mark point by the alignment means such as the third rotation mechanism, the third control unit, and the third driving unit. Alternatively, the direction of the astigmatic axis of the target lens data may be matched.

  Further, as a method of inverting the lens up and down, for example, the processing unit 1000 receives the lens LE measured by the mark detection unit 1300 from the first hand 1230 and chucks it with the chuck shafts 1111 and 1121. Then, based on the information about the horizontal direction and the vertical direction of the lens from the mark detection device 1300, the chuck shafts 1111 and 1121 are rotated and adjusted so that the horizontal direction and the vertical direction of the lens are in an appropriate direction with respect to the processing device. Such a configuration may be used. In this way, it is not necessary to correct the processing data based on the lens measurement result, and the control program can be simplified.

  Similarly, by rotating the lens rotation axis from the detection result of marks such as mark points, the direction of the optical center or astigmatism axis of the lens, the optical center determined by the layout data, or the direction of the astigmatism axis of the target lens data is determined. You may match.

  The eyeglass lens processing apparatus of the present embodiment includes the mark detection apparatus 1300, the lens transport unit 1200, and the tray transport unit 1500, but is not limited thereto. Each device is provided independently, and a spectacle lens processing system may be configured by each device. Then, this spectacle lens processing system may perform processing correctly by aligning the top and bottom of the lens LE with the top and bottom of the target lens shape based on the detection result of the mark detection unit 1300.

  In addition, this spectacle lens processing system includes at least one control including a processor (for example, a CPU) that performs various control processes and a storage medium that stores a program for processing the spectacle lens LE by the method described above. (E.g., host PC 1030, control unit 1250, control unit 1300, control unit 1160, control unit 1510, etc.). Then, the processor may execute the stored program.

  In the above description, the spectacle lens processing apparatus or spectacle lens processing system includes the mark detection unit 1300. However, the present invention is not limited to this. The spectacle lens processing apparatus or the spectacle lens processing system may not include the mark detection unit 1300, and may acquire a detection result of a mark such as a mark from the outside. Then, the positions of the lens LE and the lens rotation axis may be adjusted based on the acquired information. Similarly, the spectacle lens processing apparatus or the spectacle lens processing system may acquire information from which the upper and lower sides of the lens LE can be detected from the outside. Then, the lens LE may be correctly processed by aligning the top and bottom of the lens LE and the top and bottom of the target lens shape based on the acquired information.

  As the vertical detection marks, for example, as shown in FIG. 14A, it is assumed that a triangular upper mark Mu and a circular lower mark Md are printed as vertical detection marks. In such a case, the upper and lower sides of the lens can be detected by setting in advance that the upper mark Mu of the triangle is positioned above the lens and the lower mark Md of the circle is positioned below the lens. .

  Further, for example, as shown in FIG. 14B, it is assumed that a mark M1 that is asymmetrical in the vertical and horizontal directions or a mark M2 that is made up of alphanumeric characters or the like is printed as the vertical detection mark. In such a case, it may be set to detect the top and bottom of the lens based on the detection result of detecting the position such as the shape of the mark or the direction of the character.

  In addition, lenses that can detect the top and bottom by the appearance of lenses or gradation lenses that have different lens shapes before and after processing can automatically detect the top and bottom by image processing even when marks such as mark marks are not applied. it can. Even in such a case, it is possible to automatically detect the top and bottom of the lens by storing in the memory 51 a feature portion (lens shape or color) that can detect the top and bottom.

  It is also possible to automatically detect the top and bottom of the lens by detecting a hole opened as a mark for detecting the top and bottom of the lens LE. For example, as shown in FIG. 15, it is possible to detect the position of the hole H0 of the lens LE having a hole H0 in the upper portion and automatically detect the upper and lower sides of the lens. In this case, the optical center (or frame center) of the lens, the horizontal direction of the lens, etc. are preferably marked.

  When detecting the hole H0 of the lens LE, the control unit 50 starts measuring the hole position based on the image captured by the image sensor 33. At this time, since the hole H0 is illuminated from the rear surface side of the lens by the reflecting member 20, the reflected light diffuses at the edge of the hole H0. As a result, the amount of light received by the image sensor 33 is reduced, and the contour of the hole H0 is clearly detected.

  And the control part 50 acquires the information of the horizontal direction etc. of the optical center (or frame center) lens of a lens by detecting the marking point etc. which were given separately from the hole H0, and the acquired information and the position of a hole Based on the above, the upper and lower sides of the lens LE are detected. In this way, it is possible to detect the top and bottom of the lens by detecting a hole opened as a mark that can detect the top and bottom of the lens. In addition to holes, physical processing such as scratches, dents, dents, laser marks formed by a laser processing machine or the like may be used. Similarly, it is possible to detect the upper and lower sides of the lens LE with respect to a mark such as a specific physical processing applied to define the upper and lower sides of the spectacle lens.

  In the above description, if the center of the cup is aligned with the geometric center of the lens, it is not necessary to provide a mark such as a mark on the optical center (or the center of the frame) of the lens. Since the outer shape of the lens is measured by performing image processing on the brightness and darkness of the lens image captured by the image sensor 33, the upper and lower sides of the lens are detected based on the position of the hole with respect to the geometric center of the measured outer shape. Also good.

  In the present embodiment, as a method for detecting the mark such as the mark point of the lens, the mark or the like is detected by analyzing the image captured by the image sensor, but the present invention is not limited to this. Absent. Even if it is not an image analysis, what is necessary is just to be able to detect various marks such as mark points or holes. For example, if a mark such as a mark is made with a magnetic paint, the position of the mark can be detected by detecting the magnetism of the paint.

  In the above description, the image analysis is performed by optical imaging or magnetic imaging using an imaging device in order to detect a mark applied to the lens, but the present invention is not limited to this. By detecting the position where light or magnetism is detected using a sensor that detects the presence or absence of light or magnetism without using an image sensor, it is possible to detect the predetermined position or direction of the lens and the top and bottom of the lens. Is possible. For example, if a mark for blocking light is provided on the upper part of the lens, it can be detected that the part where the light is detected weakly by the optical sensor is the upper part of the lens. Thus, it is only necessary to be able to detect a predetermined position and a predetermined direction of the lens or the direction of the mark that defines the vertical direction. The direction of the mark may be detected from the position of the mark.

  In the first and second embodiments of the present invention, the spectacle lens processing apparatus (for example, spectacle lens processing apparatus or cup mounting apparatus) includes a mark detection unit (for example, mark detection units 1300 and 200). Although it was assumed, it is not limited to this. The mark detection units 1300 and 200 are not provided, but have an acquisition unit (such as a signal reception unit) that acquires a detection result of a mark or the like applied to the spectacle lens LE from the outside, and is based on the acquired detection result. It is also possible to detect a predetermined position or a predetermined direction of the lens LE and the up and down of the lens LE.

  The spectacle lens processing apparatus may be a dyeing apparatus that dyes spectacle lenses. For example, when a directional dyeing process such as a gradation dyeing process is applied to a lens, the dyeing device may detect the upper and lower sides of the lens by detecting a mark that defines the upper and lower parts applied to the lens. And you may give a dyeing | staining process according to the upper and lower sides of a lens. Thereby, it is possible to prevent the lens from being stained up and down by mistake, and the lens can be dyed in the correct direction.

  Note that the vertical detection unit (for example, the control unit 1310 or the control unit 50) provided in the eyeglass lens processing apparatus of the present embodiment defines the vertical direction of the lens detected by the mark detection unit (for example, the mark detection unit 1300 or 200). Based on the detection result of the mark to be detected, the upper and lower sides of the spectacle lens may be detected by detecting the direction of the mark. The detection of the direction of the mark includes a method of detecting the direction of the mark from the position of the mark with respect to a reference position (for example, the optical center position of the spectacle lens, the position of the lens mounting portion formed in the lens image).

  When detecting up and down, the up and down detection unit (for example, the control unit 1310 or the control unit 50) may detect the upward angle of the lens from the detection result of the mark detected by the mark detection unit. Based on the result of angle detection in the vertical direction, the apparatus may align the upper and lower sides of the lens with the upper and lower sides of the target lens data. As a result, proper alignment is possible.

  As a method of detecting the upward angle, the upward angle of the lens may be detected by detecting the angle of the mark with respect to the measurement optical system of the mark detection unit. Of course, detecting the upward angle includes detecting the upward angle by detecting the angle of the spectacle lens in a predetermined direction (for example, the downward direction). That is, it is only necessary to detect the vertical direction.

  Of course, the up / down detection unit does not have to detect the angle of the mark. From the detection result of the mark detected by the mark detection unit, for example, the up / down detection of the lens relative to the reference direction of the measurement optical system of the mark detection unit You may detect whether it corresponds.

  Further, in the present embodiment, the mark that can be discriminated up and down is detected, but the present invention is not limited to this. It may be a mark that cannot be distinguished vertically. For example, the optical center and three mark points arranged in a straight line on the left and right sides thereof may be detected.

  In the above description, an apparatus that does not have a function of measuring optical characteristics has been described as an example. However, the present embodiment can be applied to any apparatus that has a function of detecting marks in addition to measuring optical characteristics. It is.

DESCRIPTION OF SYMBOLS 1030 Host computer 1000 Processing apparatus 1111 Upper chuck shaft 1121 Lower chuck shaft 1130 Adsorption member 1150R, 1150L Lens grinding part 1160 Control part 1200 Lens conveyance apparatus 1300 Mark detection unit 1500 Tray conveyance apparatus

Claims (1)

A processing tool for processing a spectacle lens, a first rotation mechanism for rotating a pair of lens chuck shafts directly holding the spectacle lens about an axis, and a first drive for driving the first rotation mechanism A spectacle lens processing apparatus that processes the spectacle lens based on target lens shape data and layout data, and a first control unit that controls the first drive unit,
A lens transport unit for transporting the spectacle lens to the spectacle lens processing apparatus;
A lens holding part provided in the lens transport unit to hold the spectacle lens;
A second rotation mechanism for rotating the spectacle lens held by the lens holding unit in a circumferential direction of the spectacle lens; a second drive unit for driving the second rotation mechanism; and the second drive unit. And a second control unit that controls, and is detected by a mark detection unit that detects a mark applied to the spectacle lens to define at least one of an optical center of the spectacle lens and a reference direction of an astigmatism axis. Based on the detected result, the optical center of the spectacle lens held on the lens chuck shaft is aligned with the optical center determined by the layout data, and / or the astigmatism of the spectacle lens held on the lens chuck shaft. and matching means for matching the reference direction of the astigmatic axis in the target lens shape data and the reference axis,
Equipped with a,
The spectacle lens processing apparatus, wherein the second control unit controls the second driving unit to align the spectacle lens held by the holding unit by rotating in the circumferential direction .

Images