JP6950286B2 - Eyeglass lens processing equipment and processing control program - Google Patents

Description

The present disclosure relates to a spectacle lens processing apparatus for processing the peripheral edge of a spectacle lens, and a processing control program.

Conventionally, various methods have been proposed as a method of forming a bevel or a groove on the lens for fitting the lens on the rim of the spectacle frame. For example, the bevel position setting device disclosed in Patent Document 1 sets a temporary bevel position by obtaining a bevel curve based on the shape of the frame of the spectacles. If the temporarily set position of the bevel deviates from the edge end face of the lens, the bean data is calculated by changing the position of the bevel within the edge thickness. Further, a technique for setting the position of the bevel or the groove at the position where the edge thickness is divided at a constant ratio is also disclosed.

Japanese Unexamined Patent Publication No. 2006-142473

Some spectacle frames also have a protrusion that projects further forward from the front of the rim. For example, there is a frame in which the wisdom that connects the rim and the temple protrudes forward from the front of the rim. Here, when the lens is fitted to the rim, if the front surface of the lens protrudes forward from the front end of the protruding portion, the appearance of the spectacles is often deteriorated. In addition, the appearance of the spectacles may be deteriorated because the protruding portion protrudes significantly in front of the front surface of the lens.

A typical object of the present disclosure is to provide a spectacle lens processing device and a processing control program capable of appropriately processing the lens peripheral edge so that the lens fits nicely on a rim having a protrusion. ..

A first aspect of the spectacle lens processing apparatus provided by the typical embodiment in the present disclosure is a spectacle lens processing apparatus in which a bevel or a groove for fitting a lens on the rim of a frame of an eyeglass is formed on the peripheral edge of the lens. A peripheral edge processing tool for processing the peripheral edge of the lens and a control unit for controlling the operation of the spectacle lens processing device are provided, and the control unit connects the rim and the temple of the frame and front surface of the rim. The information on the presence or absence of the protruding portion, which is information indicating whether or not the frame has the wisdom, which is the protruding portion protruding further forward, was acquired, and the information on the presence or absence of the protruding portion indicating that the frame has the wisdom was acquired. In this case, at the position of the wisdom when the lens is fitted to the rim, the front surface of the lens is located at the front end of the wisdom as compared with the case where the front surface of the lens and the front surface of the rim are aligned in the front-rear direction. The approaching bevel or groove is formed on the lens by the peripheral processing tool.
A second aspect of the spectacle lens processing apparatus provided by a typical embodiment in the present disclosure is an spectacle lens processing apparatus that forms a bevel or a groove for fitting a lens on the rim of a frame of an eyeglass on the peripheral edge of the lens. The frame includes a peripheral edge processing tool for processing the peripheral edge of the lens and a control unit for controlling the operation of the spectacle lens processing device. When the protrusion presence / absence information indicating whether or not the frame has the protrusion is acquired and the protrusion presence / absence information indicating that the frame has the protrusion is acquired, the protrusion of the protrusion from the front surface of the rim is acquired. The amount is acquired, and based on the acquired protrusion amount, the front end portion of the protrusion and the front-rear position of the front surface of the lens coincide with each other at the position of the protrusion when the lens is fitted to the rim. A bevel or groove is formed on the lens by the peripheral processing tool.
A third aspect of the spectacle lens processing apparatus provided by the typical embodiment in the present disclosure is a spectacle lens processing apparatus in which a bevel or a groove for fitting a lens on the rim of a frame of an eyeglass is formed on the peripheral edge of the lens. The frame includes a peripheral edge processing tool for processing the peripheral edge of the lens and a control unit for controlling the operation of the spectacle lens processing device. The presence / absence information of the protruding portion, which is information indicating whether or not the lens has the protruding portion, is acquired, the presence / absence information of the protruding portion indicating that the frame has the protruding portion is acquired, and the thickness of the lens is from the rear end of the rim. When the thickness is greater than or equal to the front end of the protruding portion, the position of the protruding portion when the lens is fitted to the rim is compared with the case where the front surface of the lens and the front surface of the rim are aligned in the front-rear direction. The bevel or groove in which the front surface of the lens approaches the front end of the protruding portion is formed on the lens by the peripheral edge processing tool.

A first aspect of a machining control program provided by a typical embodiment of the present disclosure is performed on a spectacle lens processing apparatus that forms a bevel or groove on the periphery of the lens to fit the lens on the rim of the frame of the spectacle. A processing control program, which is executed by a control unit of the spectacle lens processing apparatus to connect the rim and the temple of the frame and to project wisdom further forward from the front surface of the rim. When the information acquisition step of acquiring the protrusion presence / absence information which is the information indicating whether or not the frame has the protrusion and the protrusion presence / absence information indicating that the frame has the wisdom are acquired, the lens is attached to the rim. In the position of the wisdom when the lens is fitted, the bevel or groove in which the front surface of the lens approaches the front end of the wisdom as compared with the case where the front surface of the lens and the front surface of the rim are aligned in the front-rear direction. The spectacle lens processing apparatus is made to perform a processing step of forming the lens on the lens by a peripheral edge processing tool for processing the peripheral edge of the lens. A second aspect of the machining control program provided by a typical embodiment of the present disclosure is performed on a spectacle lens processing apparatus that forms a bevel or groove on the periphery of the lens to fit the lens on the rim of the frame of the spectacle. A processing control program, which is information indicating whether or not the frame has a protruding portion that projects further forward from the front surface of the rim by being executed by the control unit of the spectacle lens processing device. When the information acquisition step for acquiring information and the information on the presence or absence of the protruding portion indicating that the frame has the protruding portion are acquired, the amount of protrusion of the protruding portion from the front surface of the rim is acquired and acquired. Based on the amount of protrusion, the bevel or groove in which the front end of the protrusion and the position of the front surface of the lens in the front-rear direction coincide with each other at the position of the protrusion when the lens is fitted to the rim of the lens. The spectacle lens processing apparatus is made to perform a processing step of forming the lens on the lens by a peripheral edge processing tool for processing the peripheral edge. A third aspect of the machining control program provided by a typical embodiment of the present disclosure is performed on a spectacle lens processing apparatus that forms a bevel or groove on the periphery of the lens to fit the lens on the rim of the frame of the spectacle. A processing control program, which is information indicating whether or not the frame has a protruding portion that projects further forward from the front surface of the rim by being executed by the control unit of the spectacle lens processing device. The information acquisition step for acquiring information and the presence / absence information of the protrusion indicating that the frame has the protrusion are acquired, and the thickness of the lens is from the rear end of the rim to the front end of the protrusion. When the thickness is greater than or equal to the thickness, the front surface of the lens protrudes at the position of the protrusion when the lens is fitted to the rim, as compared with the case where the front surface of the lens and the front surface of the rim are aligned in the front-rear direction. The spectacle lens processing apparatus is made to perform a processing step of forming the bevel or groove approaching the front end portion of the portion into the lens by a peripheral edge processing tool for processing the peripheral edge of the lens.

According to the spectacle lens processing apparatus and the processing control program according to the present disclosure, the lens peripheral edge is appropriately processed so that the lens fits nicely on the rim provided with the protrusion.

It is a figure which shows the schematic structure of the spectacle lens processing apparatus 1. It is a block diagram which shows the electrical structure of the spectacle lens processing apparatus 1. It is a perspective view which shows an example of the frame 60 provided with the protrusion. It is a plan view of a part of a frame 60. It is a flowchart which shows an example of the beard processing process. It is sectional drawing which shows the relationship between the rim 61 and the wisdom 67 and the bevel 70 when the front end of the wisdom 67 and the front end of the lens LE are aligned. It is sectional drawing which shows the relationship between the rim 61, the bridge 63, and the bevel 70 when the front end of a bridge 63 and the front end of a lens LE are aligned. It is sectional drawing of the spectacles in the state that the front end of the bridge 63 and the wisdom 67 and the front end of the lens LE are aligned. It is sectional drawing which shows the relationship between the rim 61 and the bevel 70 when the rear surface of the rim 61 and the rear surface of a lens LE are aligned. It is sectional drawing of the spectacles in the state which the rear surface of the rim 61 and the rear surface of a lens LE are aligned.

<Overview>
The spectacle lens processing apparatus exemplified in the present disclosure forms a bevel or a groove for fitting the lens on the rim of the frame of the spectacle on the peripheral edge of the lens. The spectacle lens processing apparatus includes a peripheral edge processing tool for processing the peripheral edge of the lens and a control unit for controlling the operation of the spectacle lens processing apparatus. The control unit acquires information on the presence / absence of a protrusion, which is information indicating whether or not the frame has a protrusion that protrudes further forward from the front surface of the rim. When the control unit acquires the protrusion presence / absence information indicating that the frame has a protrusion, the control unit determines the positions of the front surface of the lens and the front surface of the rim in the front-rear direction at the position of the protrusion when the lens is fitted to the rim. A bevel or groove is formed on the lens by a peripheral processing tool so that the front surface of the lens is closer to the front end portion of the protruding portion as compared with the case of matching. In this case, when the lens is fitted to the rim, the possibility that the front surface of the lens protrudes significantly forward of the front end of the protrusion is reduced. It also reduces the possibility that the front end of the protrusion will protrude significantly forward of the front of the lens. Therefore, the peripheral edge of the lens is appropriately processed so that the lens fits nicely on the rim provided with the protrusion.

A specific method for bringing the front surface of the lens closer to the front end of the protrusion can be appropriately selected. For example, the control unit may form a bevel or a groove in the lens in which the front end portion of the protrusion and the front surface of the lens are aligned in the front-rear direction. In this case, the description that the positions of the front end portion of the protruding portion and the front surface of the lens in the front-rear direction "match" is not limited to the case where the positions of the front end portion of the protruding portion and the front surface of the lens are exactly matched. That is, when the frame has a protruding portion, the appearance of the spectacles is improved if the processing operation different from the case where the frame has the protruding portion is performed and the positions of the front end portion of the protruding portion and the front surface of the lens are substantially the same. The deviation between the front end portion of the protruding portion and the front surface of the lens in the front-rear direction is preferably less than 0.5 mm, and more preferably less than 0.2 mm. Further, the control unit may form a bevel or a groove in the lens in which the front surface of the lens coincides between the root portion and the front end portion of the protruding portion (for example, the central portion between the root and the front end). That is, the control unit may form a bevel or groove on the lens so that the front surface of the lens is located in front of the root of the protrusion (front surface of the rim). Further, the control unit may form a bevel or a groove in the lens so that the front surface of the lens is in front of the root of the protrusion.

The control unit may acquire information on the type of frame as information on the presence or absence of protrusions. Whether or not there is a protrusion often differs depending on the type of frame. Therefore, the control unit can form an appropriate bevel or groove on the lens according to the type of the frame by acquiring the information on the type of the frame as the information on the presence or absence of the protruding portion.

The control unit may acquire the protrusion presence / absence information indicating that the type of the frame is a metal frame as the protrusion presence / absence information indicating that the frame has the protrusion. In metal frames, the wisdom that connects the rim to the temple and at least one of the bridges that connect the left and right rims often project forward from the front of the rim. On the other hand, in the cell frame, the wisdom often does not protrude forward from the front of the rim. Therefore, when the type of the frame is a metal frame, the control unit determines that the frame has a protruding portion and processes the lens to more appropriately form a bevel according to the type of the frame in the lens. Can be done.

When the material of the frame is acquired as the type of the frame, the control unit may acquire the material other than the metal frame and the cell frame as the type of the frame. For example, the type of frame may include a combination frame formed by combining a metal portion and a resin portion. Further, the control unit may acquire information other than the material of the frame as information on the type of the frame. For example, information on the shape of the rim of the frame (for example, the shape in which the entire circumference of the lens is covered by the rim (full rim), the shape in which the entire circumference of the lens is covered with the rim and nyroll, etc.) is acquired as information on the type of frame. May be done.

The control unit can acquire information on the type of frame by various methods. For example, information on the type of the frame may be input to the spectacle lens processing apparatus by the user operating the operation unit. Further, information on the type of the frame may be input to the spectacle lens processing apparatus by reading the identifier attached to the frame (for example, a bar code, a QR code (registered trademark), etc.) by a reader. Further, the result measured by the frame shape measuring device (so-called "tracer") may be acquired as information on the type of the frame.

Further, the control unit may acquire information different from the frame type information as the protrusion presence / absence information. For example, the user may operate the operation unit to select the presence or absence of the protrusion. Further, the user may operate the operation unit to input the amount of protrusion of the protrusion from the front surface of the rim. In this case, when the protrusion amount larger than 0 is input, the control unit may determine that the protrusion presence / absence information indicating that the frame has the protrusion has been input. On the other hand, the control unit determines that when the protrusion amount is not input or when "0" is input as the protrusion amount, the protrusion presence / absence information indicating that the frame does not have the protrusion is input. You may. Further, the control unit may acquire at least one of the presence / absence of the protrusion and the amount of protrusion input by the user as information on the presence / absence of the protrusion. Further, the presence / absence information of the protrusion is acquired through a device that measures at least one of the presence / absence of the protrusion and the amount of protrusion (for example, a frame shape measuring device that measures the shape of the frame using a laser, a camera, or the like). You may.

The control unit may acquire the amount of protrusion of the protrusion from the front surface of the rim. Based on the acquired protrusion amount, the control unit may form a bevel or a groove in the lens in which the front end portion of the protrusion portion and the front surface of the lens are aligned in the front-rear direction. In this case, the front end portion of the protrusion and the front-rear position of the front surface of the lens are more likely to match more accurately. As a result, the appearance of the glasses is further improved.

The control unit can acquire the amount of protrusion of the protrusion by various methods. For example, the protrusion amount may be input to the spectacle lens processing apparatus by the user operating the operation unit. Further, the amount of protrusion of the protruding portion of the frame may be input to the spectacle lens processing apparatus by reading the identifier (for example, bar code, QR code (registered trademark), etc.) attached to the frame by the reader. Further, the protrusion amount measured by the frame shape measuring device (so-called "tracer") may be acquired.

However, the control unit may form a bevel or a groove in which the position of the front surface of the lens in the front-rear direction approaches the front end portion of the protrusion portion without acquiring the protrusion amount of the protrusion portion. For example, the control unit assumes that the amount of protrusion of the protrusion is an average amount of protrusion, so that the amount of protrusion of the front surface of the lens from the front surface of the rim to the front matches the average amount of protrusion of the protrusion. In addition, bevels or grooves may be formed on the lens. In this case, the average protrusion amount of the protrusion may be preset or may be appropriately changed by the user. Further, the average amount of protrusion of the protruding portion may be preset for each type of frame.

The control unit acquires information on the presence or absence of a protrusion indicating that the frame has a protrusion, and when the thickness of the lens is equal to or greater than the thickness from the rear end of the rim to the front end of the protrusion, the front surface of the lens protrudes. A bevel or groove close to the front end of the portion may be formed on the lens. When the thickness from the rear end of the rim to the front end of the protrusion (hereinafter, may be simply referred to as "rim thickness") is larger than the thickness of the lens, the position of the front end of the protrusion and the front end of the lens. By matching the above, the bevel or groove formed on the lens may not fit neatly into the frame, and the lens may not be held properly. Also, the appearance of the lens may deteriorate. On the other hand, the control unit forms a bevel or a groove on the lens in which the front surface of the lens approaches the front end of the protrusion, provided that the thickness of the lens is equal to or greater than the thickness of the rim, thereby forming the thickness of the lens and the rim. Appropriate machining can be performed according to the relationship between.

The thickness of the lens to be compared with the thickness of the rim may be the thickness of the lens at the position of the protruding portion when the lens is fitted on the rim. In this case, when processing a lens whose thickness is greater than or equal to the thickness of the rim, the appearance of the finished eyeglasses becomes more appropriate.

The protrusion may be the wisdom that connects the rim and temple of the frame. Satoshi may protrude forward from the front of the rim, which can easily affect the appearance of the glasses. The control unit can appropriately improve the appearance of the spectacles in which the wisdom is projected by forming a bevel or a groove in the lens so that the position in the front-rear direction of the front surface of the lens at the front end of the wisdom approaches.

The lens processing method when the frame does not have a protrusion and when the lens thickness is less than the rim thickness can be appropriately selected. For example, when the thickness of the lens is less than the thickness of the rim, the control unit sets the rear ridge of the lens and the rear surface of the rim in the front-rear direction when the lens is fitted to the rim. A bevel or groove may be formed on the lens. In this case, the rear surface of the rim and the rear surface of the lens in the completed spectacles are smoothly connected, so that the appearance of the spectacles is improved. The holding strength of the lens can also be improved. In addition, when the frame does not have a protruding portion and the thickness of the lens is equal to or greater than the thickness of the rim, the control unit has a ridge on the front side of the lens when the lens is fitted on the rim and front and rear of the front surface of the rim. A bevel or groove may be formed on the lens so that the positions in the directions match. In this case, the front surface of the rim and the front surface of the lens in the completed spectacles are smoothly connected, so that the appearance of the spectacles is improved.

<Embodiment>
Hereinafter, one of the typical embodiments in the present disclosure will be described with reference to the drawings. As shown in FIG. 1, the spectacle lens processing device (lens edger) 1 according to the present embodiment includes a lens holding portion 10, a lens shape measuring unit 20, a first lens processing unit 30, and a second lens processing unit 40. Be prepared. The spectacle lens processing device 1 sandwiches the lens LE between the two lens chuck shafts 16L and 16R included in the lens holding portion 10. The spectacle lens processing device 1 processes the lens LE by changing the relative positional relationship between the first lens processing unit 30 and the second lens processing unit 40 and the lens LE sandwiched between the lens chuck shafts 16L and 16R. do.

In the following description, the direction in which the distance between the lens chuck shafts 16L and 16R and the first processing tool rotation shaft 32 of the first lens processing unit 30 fluctuates is defined as the X direction. The direction in which the lens chuck shafts 16L and 16R extend is defined as the Z direction. The Y direction is substantially the vertical direction of the spectacle lens processing device 1. Further, the diagonally lower right side, diagonally upper left side, diagonally upper right side, and diagonally lower left side of FIG. 1 are the front side, the rear side, the right side, and the left side of the spectacle lens processing device 1, respectively.

The lens holding portion 10 includes shafts 11 and 12, a Z-axis moving support base 13, and a carriage 15. The shaft 11 is fixed to the central portion in the front-rear direction of the base 2 in the spectacle lens processing device 1. The shaft 12 is fixed to the left side of the front end of the base 2. The two shafts 11 and 12 both extend in the Z-axis direction (that is, in the direction parallel to the lens chuck shafts 16L and 16R). The Z-axis moving support base 13 is supported by two shafts 11 and 12 so as to be movable in the Z-axis direction. The carriage 15 is mounted on the Z-axis moving support base 13.

The carriage 15 has a left arm 15L on the left side and a right arm 15R on the right side. The left arm 15L rotatably holds the lens chuck shaft 16L. The right arm 15R rotatably holds the lens chuck shaft 16R. The two lens chuck shafts 16L and 16R are located coaxially. The lens chuck shaft 16R on the right side is moved in the Z-axis direction by the holding motor 161 mounted on the right arm 15R. The spectacle lens processing device 1 moves the right lens chuck shaft 16R to the left to sandwich the lens LE between the two lens chuck shafts 16L and 16R. The right arm 15R is provided with a lens rotation motor 162 for rotating the two lens chuck shafts 16L and 16R. When the lens rotation motor 162 rotates, the two lens chuck shafts 16L and 16R rotate around the shafts in synchronization with each other.

A Z-axis moving motor 171 is mounted near the left end of the shaft 11. A ball screw (not shown) extending in the Z-axis direction parallel to the shaft 11 is provided at the rear portion of the Z-axis moving support base 13. When the Z-axis moving motor 171 rotates, the ball screw rotates. As a result, the Z-axis moving support base 13 and the carriage 15 move linearly in the Z-axis direction. The Z-axis moving motor 171 is provided with an encoder 172. The encoder 172 detects the movement of the carriage 15 in the Z direction by detecting the rotation of the Z-axis movement motor 171.

A guide shaft 18 and a ball screw 19 are provided in parallel between the Z-axis moving support base 13 and the left arm 15L of the carriage 15. An X-axis moving motor 191 is provided in the vicinity of the front end portion of the Z-axis moving support base 13. When the X-axis moving motor 191 rotates, the ball screw 19 rotates. As a result, the carriage 15 rotates about the shaft 11. By rotating the carriage 15, the spectacle lens processing device 1 changes the relative positional relationship between the first lens processing unit 30 and the second lens processing unit 40 and the lens LE sandwiched between the lens chuck shafts 16L and 16R. Let me. That is, the spectacle lens processing device 1 drives the X-axis moving motor 191 to move the first lens processing unit 30 and the second lens processing unit 40 relative to the lens LE in the X direction. The spectacle lens processing device 1 may perform processing by moving the first lens processing unit 30 and the second lens processing unit 40. That is, the spectacle lens processing device 1 may have a configuration in which the first lens processing unit 30 and the second lens processing unit 40 are relatively moved with respect to the lens LE. The X-axis moving motor 191 is provided with an encoder 192. The encoder 192 detects the movement of the carriage 15 in the X direction by detecting the rotation of the X-axis movement motor 191.

The lens shape measuring unit 20 is provided behind the carriage 15. The lens shape measuring unit 20 includes a stylus 21 that comes into contact with the front surface of the lens LE and a stylus 22 that comes into contact with the rear surface of the lens LE. The stylus 21 and 22 are held by an arm 23 that can move in the Z direction. The lens shape measuring unit 20 includes a sensor that detects the position of the arm in the Z direction. When measuring the lens shape, the spectacle lens processing device 1 rotates the lens chuck shafts 16L and 16R and controls the movement of the lens chuck shafts 16L and 16R in the X direction based on the lens shape. As a result, the Z-direction positions of the front and rear surfaces of the lens corresponding to the lens shape are detected by the sensor. In the spectacle lens processing apparatus 1 of the present embodiment, the lens shape is measured by also utilizing the movement control of the lens chuck shafts 16L and 16R in the Z direction.

The first lens processing unit 30 is provided in front of the carriage 15. The first lens processing unit 30 includes a first processing tool 31, a first processing tool rotation shaft 32, and a first processing tool rotation motor 321. The first processing tool 31 (a type of peripheral processing tool for processing the peripheral edge of a lens) includes a rough grindstone for glass 311, a finishing grindstone 312, a flat mirror finishing grindstone 313, a rough grindstone for plastic 314, and the like. The finishing grindstone 312 is formed with a V-groove (bevel groove) VG that forms a bevel on the lens LE and a flattened surface. The first processing tool rotation shaft 32 extends in the Z-axis direction, and a plurality of substantially disk-shaped grindstones included in the first processing tool 31 are coaxially fixed. The first processing tool rotation motor 321 is connected to the right end portion of the first processing tool rotation shaft 32. When the first processing tool rotation motor 321 rotates, the first processing tool rotation shaft 32 and the first processing tool 31 rotate around the shaft. The spectacle lens processing device 1 processes the peripheral edge of the lens LE by bringing the lens LE into contact with the first processing tool 31.

The second lens processing unit 40 is provided behind the carriage 15. The second lens processing unit 40 is arranged side by side with the lens shape measuring unit 20 outside the moving range of the lens shape measuring unit 20. The second lens processing unit 40 includes a second processing tool 44 (a type of peripheral processing tool that processes the peripheral edge of the lens) and a second processing tool rotation motor 431. The second processing tool 44 is used when chamfering the peripheral edge of the lens LE, digging a groove, and the like.

The electrical configuration of the spectacle lens processing apparatus 1 will be described with reference to FIG. The spectacle lens processing device 1 includes a CPU 5 which is a processor that controls the spectacle lens processing device 1. A RAM 6, a ROM 7, a non-volatile memory 8, an operation unit 50, a display 55, and an external communication I / F 59 are connected to the CPU 5 via a bus. The CPU 5 and the RAM 6 and the like function as a control unit that controls the operation of the spectacle lens processing device 1. Further, the CPU 5 includes various devices such as the above-mentioned motors (holding motor 161, lens rotation motor 162, Z-axis movement motor 171, X-axis movement motor 191 and first processing tool rotation motor 321 and second addition. A tool rotation motor 431, an encoder 172, an encoder 192, etc.) are connected via a bus.

The RAM 6 temporarily stores various types of information. Various programs, initial values, and the like are stored in the ROM 7. The non-volatile memory 8 is a readable and writable storage medium (for example, a flash ROM, a hard disk drive, etc.) that can retain the stored contents even when the power supply is cut off. The non-volatile memory 8 stores a control program for controlling the operation of the spectacle lens processing apparatus (for example, a processing control program for controlling the bevel processing process shown in FIG. 5). The operation unit 50 is provided to receive input of various instructions from the operator. For example, an operation button, a touch panel provided on the surface of the display 55, or the like can be used as the operation unit 50. The display 55 displays various information such as the shape of the lens LE and the shape of the frame. The external communication I / F 59 connects the spectacle lens processing device 1 to an external device (for example, a frame shape measuring device 193 or the like).

The frame shape measuring device 193 measures the shape of the frame into which the lens LE is fitted. As an example, the frame shape measuring device 193 may measure the shape of the groove of the frame by moving the stylus along the groove of the frame and detecting the displacement of the stylus. Further, the frame shape measuring device 193 may measure at least one of the presence / absence of the protruding portion in the frame and the protruding amount of the protruding portion. In this case, the frame shape measuring device 193 may acquire the information of the protruding portion by using at least one of a laser, a camera, and the like.

An example of the frame 60 provided with the protrusion will be described with reference to FIGS. 3 and 4. In the following description, the front-rear direction when the wearer wears the completed spectacles will be described as the front-back direction of the frame 60 and the lens LE. That is, in the completed eyeglasses, the direction along the optical axis of the lens LE is the front-back direction of the frame 60 and the lens LE. A typical spectacle frame 60 includes a rim 61, a bridge 63, a nose pad 64, a temple 66, a wisdom 67, and a hinge 68. Members other than the bridge 63 are provided symmetrically with respect to the bridge 63. The rim 61 is attached to the peripheral edge of the lens LE to hold the lens LE. A groove 62 (see FIGS. 6, 7, and 9) into which the bevel 70 of the lens LE (see FIGS. 6, 7, and 9) is fitted is formed on the inner peripheral surface of the rim 61. However, instead of the groove 62, an annular convex portion may be provided on the inner circumference of the rim 61. In this case, a groove into which the convex portion of the rim 61 fits may be formed on the peripheral edge of the lens LE instead of the bevel 70. In the present embodiment, as an example, a process for forming the bevel 70 on the peripheral edge of the lens LE will be described. However, when a groove into which the convex portion of the rim 61 fits is formed on the peripheral edge of the lens LE, it is possible to adopt a process similar to the process executed in the present embodiment. In this case, the bevel 70 formed on the lens LE may be replaced with a groove.

The bridge 63 connects the left and right rims 61. The nose pad 64 is provided on each of the left and right rims 61 near the bridge 63 and comes into contact with the wearer's nose. The temple 66 is a member extending rearward from each of the left and right sides, and is hung on the wearer's ear. The wisdom 67 is located at both left and right ends (left and right corners) of the frame 60, and connects the rim 61 and the temple 66. It is possible to adjust the tilt angle of the lens LE by deforming the wisdom. In the cell frame, the wisdom 67 is often integrated with the rim 61, but in the metal frame, the wisdom 67 and the rim 61 are often separate bodies. Further, in the metal frame, the rim lock for screwing the rim 61 is often included in the wisdom 67. The hinge 68 is provided to rotate the temple 66 with respect to the rim 61. The hinge 68 is often provided inside the wisdom 67.

The frame 60 illustrated in FIGS. 3 and 4 includes a protrusion. The protruding portion is a portion that protrudes further forward from the front surface of the rim 61. In the frame 60 illustrated in FIGS. 3 and 4, the wisdom 67 and the bridge 63 are protrusions. In the present embodiment, when the bridge 63 projects forward from the front surface of the rim 61 only between the left and right rims 61 (for example, when the front surface of the rim and the front surface of the bridge are smoothly connected). Does not treat the bridge 63 as a protrusion.

In general, the presence or absence of protrusions often differs depending on the type of frame. For example, the frame 60 shown in FIGS. 3 and 4 is a metal frame. In the metal frame, at least one of the wisdom 67 and the bridge 63 is often a protrusion. On the other hand, cell frames often do not have protrusions. Further, in the frames shown in FIGS. 3 and 4, both the wisdom 67 and the bridge 63 are protrusions. However, only one of the wisdom 67 and the bridge 63 may be protruding. Further, even when a projecting portion other than the wisdom 67 and the bridge 63 (for example, a portion projecting forward from the front surface of the rim 60 for mere decoration) is provided on the frame, at least one of the processes exemplified in this embodiment is provided. Part can be applied.

The bevel processing process executed by the CPU 5 of the spectacle lens processing apparatus 1 of the present embodiment will be described with reference to FIGS. 5 to 10. As described above, the non-volatile memory 8 of the spectacle lens processing apparatus 1 stores a processing control program for executing the bevel processing process. When the CPU 5 inputs an execution instruction for the bevel processing process via the operation unit 50 or the like, the CPU 5 executes the bevel processing process shown in FIG. 5 according to the processing control program.

First, the CPU 5 acquires the information on the presence / absence of the protruding portion (S1). The protrusion presence / absence information is information indicating whether or not the frame 60 has a protrusion. As described above, the presence or absence of the protrusion often differs depending on the type of the frame. Therefore, the CPU 5 can acquire the frame type information as the protrusion presence / absence information. Further, the CPU 5 can also acquire information different from the type of the frame as the information on the presence / absence of the protruding portion. For example, the CPU 5 may allow the user to operate the operation unit 50 to select whether or not the frame has a protrusion. Further, the CPU 5 may acquire the amount of protrusion of the protrusion from the front surface of the rim to the front (for example, P shown in FIGS. 6, 7 and 9) as information on the presence or absence of the protrusion.

The CPU 5 can acquire information on the presence / absence of protrusions (for example, at least one of information on the type of frame and the amount of protrusions) by various methods. For example, the presence / absence information of the protruding portion may be input by the user operating the operation unit 50. Further, the presence / absence information of the protruding portion may be input to the spectacle lens processing device 1 by reading the identifier attached to the frame by the reader. The presence / absence information of the protruding portion may be acquired via the frame shape measuring device 193 described above.

The CPU 5 determines whether or not the presence / absence information of the protrusion indicating that the frame has the protrusion has been acquired (S2). As an example, when the frame type information is acquired as the protrusion presence / absence information, the CPU 5 determines whether or not the frame type is a metal frame. As described above, in the metal frame, at least one of the wisdom 67 and the bridge 63 often protrudes from the front surface of the rim 61. Therefore, when the type of the frame is a metal frame, the CPU 5 determines that the frame has a protruding portion. On the other hand, when the type of the frame is other than the metal frame (for example, a cell frame), the CPU 5 determines that the frame does not have a protruding portion. Further, the CPU 5 may determine that the frame has the protruding portion when the protruding amount of the protruding portion is input and the input protruding amount is larger than 0.

When it is determined that the frame has no protrusion (S2: NO), the CPU 5 creates bevel data by a usual method (for example, at least one of the conventionally used methods) (S3). In S3, various methods can be adopted. For example, the CPU 5 may acquire the shape data of the groove of the frame via the frame shape measuring device 193. The groove shape data of the frame may be the three-dimensional data of the groove itself or the spherical component data (frame curve) of the groove. Further, the CPU 5 may acquire data indicating the shapes of the front surface and the rear surface of the lens LE (hereinafter, referred to as “lens shape data”) via the lens shape measuring unit 20 or the like. The CPU 5 may create bevel data by calculating the shape of the bevel so as to follow the shape of the groove of the frame and determining the arrangement position of the bevel with respect to the lens LE of the calculated shape. The method of determining the position of the bevel can be appropriately selected. For example, the CPU 5 has a bevel at a position where the edge thickness is divided by a predetermined ratio (for example, 1: 1) at a specific portion of the lens LE (for example, the position of the moving diameter angle at which the edge thickness of the lens LE is the thinnest). The position of the bevel may be determined so that it can pass through. Further, the CPU 5 may create bevel data by calculating the position where the edge thickness of the lens LE is divided by a predetermined ratio (for example, 1: 1 or 3: 7 etc.) over the entire circumference as the bevel position. good.

When it is determined that the frame has the protrusion (S2: YES), the CPU 5 determines whether or not the protrusion amount of the protrusion (distance P in FIGS. 6, 7 and 9) has been acquired (S5). When the protrusion amount is acquired (S5: YES), the CPU 5 sets the protrusion amount to the acquired value. On the other hand, when the protrusion amount has not been acquired (S5: NO), the CPU 5 assumes that the protrusion amount of the protrusion portion is a default value (for example, an average value), and sets the default value as the protrusion amount (S7). .. In general, the amount of protrusion of the wisdom 67 of the metal frame is often about 1 mm. Therefore, in the present embodiment, the default value of the protrusion amount is set to 1 mm. However, the average value of the protrusion amount can be set as appropriate. The default value may be changed by the user.

Next, in the CPU 5, the thickness of the lens LE (in the present embodiment, the edge thickness of the lens LE at the position of the protrusion when the lens LE is fitted to the rim 61) is changed from the rear end of the rim 61 to the front end of the protrusion. It is determined whether or not the thickness is equal to or greater than the thickness up to (hereinafter, simply referred to as "thickness of the rim 61") (S9). In the present embodiment, the thickness of the lens LE is LT in FIG. 6, and the thickness of the rim 61 is RT in FIGS. 6 and 9. The thickness RT of the rim 61 may be input by the user or may be acquired via the frame shape measuring device 193 or the like.

When the thickness RT of the lens LE is equal to or greater than the thickness RT of the rim 61 (S9: YES), the CPU 5 aligns the front surface of the lens LE with the front surface of the rim 61 (for example, the bevel data by the method of S3). The bevel data is created so that the front surface of the lens LE is closer to the front end portion of the protruding portion than in the case of creating the lens LE (S10, S11). Specifically, the CPU 5 of the present embodiment creates bevel data so that the front end portion of the protruding portion and the front surface of the lens LE are aligned in the front-rear direction. The method of creating bevel data in which the front end portion of the protruding portion and the front end portion of the lens LE coincide with each other can be appropriately selected.

Here, an example of a method of creating bevel data when the front end portion of the wisdom 67 and the front end portion of the bridge 63 are aligned with the front surface of the lens LE will be described. First, the CPU 5 determines a temporary bevel position with respect to the peripheral edge of the lens LE (S10). As a method for determining the temporary bevel position, for example, the conventional method described in S3 can be adopted. When the bevel is formed at the position determined by the conventional method, the front end portion of the protruding portion and the front end portion of the lens LE are often displaced from each other in the front-rear direction.

Next, the CPU 5 moves the temporary bevel position in the lens LE to match the front end of the protruding portion with the front-rear position of the front surface of the lens LE when the lens LE is fitted to the rim 61 (S11). ). As an example, in the CPU 5 of the present embodiment, as shown in FIG. 6, the distance D2 from the apex of the bevel 70 to the front surface of the lens LE is the rim at the position of the wisdom 67 when the lens LE is fitted to the rim 61. The position of the temporary bevel 70 determined in S10 is moved in the front-rear direction so as to coincide with the distance D1 from the groove 62 of the 61 to the front end of the wisdom 67. Further, as shown in FIG. 7, the CPU 5 sets the distance D4 from the apex of the bevel 70 to the front surface of the lens LE from the groove 62 of the rim 61 at the position of the bridge 63 when the lens LE is fitted to the rim 61. The position of the bevel 70 is rotated around an axis extending in the vertical direction through the wisdom 67 so as to coincide with the distance D3 to the front end of the bridge 63. By the above processing, bean data is created. The distance D1 and the distance D3 are calculated based on the protrusion amount of the protrusion set in S6 and S7 and the position of the groove 62 formed in the rim 61. For example, when the protrusion amount P of the wisdom 67 is 1 mm and the distance from the center of the groove 62 in the front-rear direction to the front surface of the rim 61 is 1.5 mm, the distance D1 is 2.5 mm.

Next, a bevel 70 is formed on the peripheral edge of the lens LE according to the bevel data created in S10 and S11 (S16). As a result, as shown in FIG. 8, the positions of the front end portion of the wisdom 67 and the front end portion of the bridge 63 in the front-rear direction both coincide with the positions of the front surface of the lens LE. Therefore, even when the wisdom 67 and the bridge 63 project further forward than the front surface of the rim 61, the appearance of the spectacles is good.

In the methods illustrated in FIGS. 6 to 8, the front end portion of the wisdom 67 and the front end portion of the bridge 63 both coincide with the front surface of the lens LE. However, it is also possible to align the front surface of the lens LE with either the wisdom 67 or the bridge 63. For example, the bridge 63 may not project from the front surface of the rim 61, and only the wisdom 67 may project forward from the front surface of the rim 61. In such a case, the CPU 5 may create bevel data by moving the position of the temporary bevel 70 determined in S10 in the front-rear direction so that the distance D2 in FIG. 6 coincides with the distance D1. On the contrary, it is also possible to align only the front end portion of the bridge 63 with the front surface of the lens LE. Further, the bevel data may be created so that the position of the front surface of the lens LE in the front-rear direction coincides with the front end portion of the protruding portion other than the wisdom 67 and the bridge 63.

Further, when the thickness RT of the lens LE is smaller than the thickness RT of the rim 61, the lens LE is not firmly held by the rim 61 by matching the positions of the front end portion of the protruding portion and the front surface of the lens LE. In some cases. Therefore, in the CPU 5 of the present embodiment, when the thickness RT of the lens LE is smaller than the thickness RT of the rim 61 (S9: NO), the rear surface of the lens LE and the rim 61 when the lens LE is fitted to the rim 61 The bevel data is created so that the positions of the rear surfaces in the front-rear direction match (S13, S14).

As an example, the CPU 5 of the present embodiment determines a temporary bevel position with respect to the peripheral edge of the lens LE, as in the process of S10 (S13). Next, the CPU 5 creates bevel data by moving the temporary bevel position determined with respect to the lens LE and matching the positions of the rear surface of the lens LE and the rear surface of the rim 61 (S14). The specific method of S14 can also be set as appropriate. As an example, as shown in FIG. 9, the CPU 5 of the present embodiment sets a distance D5 from the center of the groove 62 in the front-rear direction to the rear surface of the rim 61 at a plurality of points (for example, three points A, B, C) on the rim 61. ) To get it. The distance D may be input by the user, for example, or may be acquired via the frame shape measuring device 193 or the like. Next, the CPU 5 moves the position of the temporary bevel 70 in the front-rear direction so that the distance D6 from the apex of the bevel 70 to the rear surface of the lens LE coincides with the distance D5 at one point (point A). Further, the CPU 5 positions the bevel 70 formed with respect to the lens LE about the axis passing through the point A so that the distance D6 coincides with the distance D5 at other points (points B and C). Rotate. As a result, the positions of the rear surface of the lens LE and the rear surface of the rim 61 coincide with each other at a plurality of points.

When the bevel 70 is formed according to the bevel data created in S13 and S14 (S16), the rear surface of the rim 61 and the rear surface of the lens LE are smoothly connected as shown in FIG. In this case, the bevel 70 is easily fitted into the groove 62 of the rim 61, and the appearance of the eyeglasses is also improved.

The techniques disclosed in the above embodiments are merely examples. Therefore, it is possible to modify the techniques exemplified in the above embodiments. For example, in the above embodiment, when there is no protruding portion in the frame (S2: NO), bevel data is created by the conventional method (S3). However, the CPU 5 has a bevel on the lens LE so that the front surface of the lens LE and the front surface of the rim 61 are aligned in the front-rear direction when the lens LE is fitted on the rim 61 when the frame does not have a protrusion. 70 may be formed. In this case, since the front surface of the rim 61 and the front surface of the lens LE in the completed spectacles are smoothly connected, the appearance of the spectacles is improved. The method of creating bevel data in this case can be realized, for example, by replacing the "rear surface" of the above-mentioned processes of S13 and S14 with the "front surface".

1 Eyeglass lens processing device 5 CPU
60 Frame 61 Rim 62 Groove 63 Bridge 67 Satoshi 70 Yagen 311 Coarse whetstone for glass 312 Finishing whetstone

Claims (6)

A spectacle lens processing device for forming a bevel or a groove for fitting a lens on the rim of a spectacle frame on the peripheral edge of the lens, the peripheral processing tool for processing the peripheral edge of the lens, and the operation of the spectacle lens processing device. A control unit for controlling is provided, and the control unit indicates whether or not the frame has wisdom, which is a protruding portion that connects the rim and the temple of the frame and projects further forward from the front surface of the rim. When the information on the presence or absence of a protruding portion, which is information, is acquired and the information on the presence or absence of a protruding portion indicating that the frame has the wisdom is acquired, the lens is at the position of the wisdom when the lens is fitted on the rim. The feature is that the bevel or groove in which the front surface of the lens is closer to the front end portion of the wisdom is formed in the lens by the peripheral processing tool as compared with the case where the front surface of the lens and the front surface of the rim are aligned in the front-rear direction. Eyeglass lens processing equipment. A spectacle lens processing device that forms a bevel or groove on the periphery of the lens to fit the lens on the rim of the spectacle frame.
A peripheral processing tool for processing the peripheral edge of the lens and
It is provided with a control unit that controls the operation of the spectacle lens processing apparatus.
The control unit
The presence / absence information of the protrusion, which is information indicating whether or not the frame has a protrusion that protrudes further forward from the front surface of the rim, is acquired.
When the information on the presence or absence of the protrusion indicating that the frame has the protrusion is acquired, the amount of protrusion of the protrusion from the front surface of the rim is acquired, and based on the acquired protrusion amount, the rim is provided with the protrusion amount. The peripheral processing tool is used to form the bevel or groove in the lens in which the front end portion of the protruding portion and the position of the front surface of the lens in the front-rear direction coincide with each other at the position of the protruding portion when the lens is fitted. A featured spectacle lens processing device. A spectacle lens processing device that forms a bevel or groove on the periphery of the lens to fit the lens on the rim of the spectacle frame.
A peripheral processing tool for processing the peripheral edge of the lens and
It is provided with a control unit that controls the operation of the spectacle lens processing apparatus.
The control unit
The presence / absence information of the protrusion, which is information indicating whether or not the frame has a protrusion that protrudes further forward from the front surface of the rim, is acquired.
When the presence / absence information of the protruding portion indicating that the frame has the protruding portion is acquired and the thickness of the lens is equal to or larger than the thickness from the rear end of the rim to the front end of the protruding portion , the rim has a thickness. At the position of the protruding portion when the lens is fitted, the bevel or the bevel whose front surface of the lens is closer to the front end portion of the protruding portion as compared with the case where the front surface of the lens and the front surface of the rim are aligned in the front-rear direction. A spectacle lens processing apparatus characterized in that a groove is formed on the lens by the peripheral edge processing tool. A processing control program executed by a spectacle lens processing device that forms a bevel or a groove for fitting a lens on the rim of a spectacle frame on the peripheral edge of the lens, and is executed by a control unit of the spectacle lens processing device. Information for acquiring information on the presence or absence of a protruding portion, which is information indicating whether or not the frame has wisdom, which is a protruding portion that connects the rim and the temple of the frame and projects further forward from the front surface of the rim. When the acquisition step and the information on the presence / absence of the protruding portion indicating that the frame has the wisdom are acquired, the front surface of the lens and the front surface of the rim are at the position of the wisdom when the lens is fitted to the rim. A processing step of forming the bevel or groove in the lens by a peripheral edge processing tool for processing the peripheral edge of the lens, in which the front surface of the lens approaches the front end portion of the wisdom as compared with the case of aligning the positions in the front-rear direction. A processing control program characterized by being executed by the spectacle lens processing apparatus. A processing control program executed by a spectacle lens processing device that forms a bevel or a groove for fitting a lens on the rim of a spectacle frame on the peripheral edge of the lens, and is executed by a control unit of the spectacle lens processing device. In the information acquisition step of acquiring information on the presence or absence of a protruding portion, which is information indicating whether or not the frame has a protruding portion that protrudes further forward from the front surface of the rim, and showing that the frame has the protruding portion. When the information on the presence or absence of the protruding portion is acquired, the amount of protrusion of the protruding portion from the front surface of the rim is acquired, and based on the acquired amount of protrusion, the protruding portion of the protruding portion when the lens is fitted to the rim. The spectacles include a processing step of forming the bevel or groove in the lens by a peripheral edge processing tool for processing the peripheral edge of the lens, in which the front end portion of the protruding portion and the front surface of the lens are aligned in the front-rear direction. A processing control program characterized by being executed by a lens processing apparatus. A processing control program executed by a spectacle lens processing device that forms a bevel or a groove for fitting a lens on the rim of a spectacle frame on the peripheral edge of the lens, and is executed by a control unit of the spectacle lens processing device. In the information acquisition step of acquiring information on the presence or absence of a protruding portion, which is information indicating whether or not the frame has a protruding portion that projects further forward from the front surface of the rim, and showing that the frame has the protruding portion. When the presence / absence information of the protruding portion is acquired and the thickness of the lens is equal to or greater than the thickness from the rear end of the rim to the front end of the protruding portion, the protruding portion of the protruding portion when the lens is fitted to the rim. In terms of position, the peripheral edge of the lens is processed so that the bevel or groove where the front surface of the lens approaches the front end portion of the protruding portion as compared with the case where the front surface of the lens and the front surface of the rim are aligned in the front-rear direction. A processing control program characterized by causing the spectacle lens processing apparatus to execute a processing step of forming the lens by a processing tool.

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