JP2003302311A - System of working ophthalmic lens - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of an artificial error or a work mistake caused by a worker in a process of ophthalmic lenses by allowing the worker to omit a positioning work and an adjusting work in processes from an optical measurement to making the axis of the ophthalmic lenses, thereby improving the efficiency and the accuracy of the work. <P>SOLUTION: The system of working the ophthalmic lenses, in which a non- worked ophthalmic lens is worded so as to match a lens frame of a frame of spectacles, is provided with at least a lens meter 2 which measures a performance of the non-worked ophthalmic lenses, an axis making machine 3 which attaches a chuck to the non-worked ophthalmic lenses when grinding the lens, and an ophthalmic lens holding stand which holds the non-worked ophthalmic lenses. The ophthalmic lens holding stand can be positioned at a prescribed point in relation to the lens meter and the axis making machine. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle lens processing system for processing a spectacle lens according to the shape of a spectacle frame.

[0002]

2. Description of the Related Art Eyeglass frames have various shapes. When providing eyeglasses to a spectacle wearer, the spectacle lens is ground and ground according to the shape of the lens frame of the spectacle frame selected by the spectacle wearer. Need to be put in the lens frame. Further, the eye refractive power (power), the astigmatic axis, the pupillary distance, etc. are peculiar to the spectacle wearer, and the spectacle lens is processed in consideration of these.

The framing work of the spectacle lens in the lens frame is generally performed as follows.

The spectacles are provided by a prescription relating to the eye of the spectacle wearer, the specifications of the raw spectacle lens are determined by the data written in the prescription, and the raw spectacle lens is provided according to the performance required by the spectacle wearer. To be selected.

The selected raw spectacle lens is mounted on a lens meter, the diopter of the raw spectacle lens and the astigmatic axis angle are measured by the lens meter, and the optical axis of the raw spectacle lens itself is measured.

The optical axis and the astigmatic axis of the raw spectacle lens are marked according to the prescription data.

Next, the unprocessed spectacle lens with the marking points is axially struck by an axial staking machine.

Axial driving is a step of attaching a lens chuck having a suction disk to the unprocessed spectacle lens, and a grinding machine in the next step can chuck the unprocessed spectacle lens through the lens chuck for grinding. It is for doing so. Therefore, the lens chuck must be accurately attached at a predetermined position based on the data measured by the lens meter.

Usually, the lens chuck mounting position on the unprocessed spectacle lens is the geometric center of the lens frame of the spectacle frame, and is eccentric from the optical center (optical axis) of the unprocessed spectacle lens. The geometric center of the spectacle frame is obtained from a template manufactured so that the lens groove shape of the lens frame is matched, and the geometric center obtained by the template, the optical center obtained by the prescription, the astigmatic axis to the mold The positional relationship between the plate and the raw spectacle lens, the astigmatic axis angle is determined, the eccentricity amount between the optical center and the geometric center, the astigmatic axis angle are determined, and the mounting position of the lens chuck on the raw spectacle lens is determined. .

The axial striking machine has a lens holding portion and a mounting work arm that can be moved up and down, and a holding portion that detachably holds the lens chuck is provided at the tip of the mounting work arm. Holding the lens chuck in the holding portion,
By lowering the attachment work arm, the lens chuck can be attached to the unprocessed spectacle lens, and the position below the vertical line of the holding portion is the lens chuck attachment position in the axial driving machine. There is.

In the axial striking step, the unprocessed spectacle lens is removed from the lens meter and mounted on the lens holding portion of the axial striking machine. When the raw spectacle lens is mounted on the lens holding portion, the astigmatic axis angle is further set to prescription data so that the lens chuck mounting position of the raw spectacle lens matches the lens chuck mounting position of the shaft driving machine. It is positioned so as to match with.

The mounting working arm is lowered, the lens chuck is mounted at the lens chuck mounting position of the raw spectacle lens, the lens chuck is removed from the mounting working arm, and the raw spectacle lens is held by the lens. The axial driving process is completed by being removed from the unit.

The tumbling machine grinds an unprocessed spectacle lens following the template so that the spectacle frame can be framed.

As described above, the steps up to the grinding step by the ball shaving machine are quite complicated, and there is a possibility that work errors and work errors may occur in each step.

Therefore, many proposals have been made to solve these problems. For example, Japanese Patent No. 295584
Japanese Unexamined Patent Application Publication No. Hei 8-233693 and Japanese Unexamined Patent Publication No. 8-233693 describe a technique in which the axial striking step is omitted from each processing step and the lens meter is provided with the axial striking function.

[0016]

[Patent Document 1] Patent Document 29
In the lens meter described in Japanese Patent No. 25584, it is necessary to align the optical axis and the cylindrical axis of the unprocessed spectacle lens, while in the lens meter described in Japanese Patent Laid-Open No. 8-233693, unprocessed. If the spectacle lens is a spherical lens that does not include astigmatism, optical axis alignment is not required, but if it is a cylindrical lens that includes astigmatism, optical axis alignment is required, and astigmatism axis alignment by a worker's manual work is required. In addition to the inevitable error in alignment and astigmatic axis alignment, there was the problem of poor work efficiency.

In view of the above situation, the present invention omits the operator's positioning work and adjustment work from the optical measurement of the lens for processing the spectacle lens to the axial striking process, resulting in human error and work error of the worker. It is intended to suppress the occurrence of the above, improve the work efficiency, and improve the processing accuracy.

[0018]

SUMMARY OF THE INVENTION The present invention relates to an eyeglass lens processing system for processing a raw eyeglass lens in accordance with the shape of a lens frame of an eyeglass frame, and a lens meter for measuring at least the performance of the raw eyeglass lens. A shafting machine that attaches a chuck for grinding to the unprocessed spectacle lens, and an spectacle lens holding table that holds the unprocessed spectacle lens,
The spectacle lens holder is related to a spectacle lens processing system that can be positioned at a predetermined position with respect to the lens meter and the hammering machine, and the center of the spectacle lens holder is aligned with the optical axis of the lens meter. The present invention relates to a spectacle lens processing system that matches the axial driving position of the axial driving machine, and the spectacle lens holding table relates to an spectacle lens processing system movably provided between the lens meter and the axial driving machine. The lens meter includes a lens performance measuring unit and an arithmetic control unit, and in a state where a raw spectacle lens is held on the spectacle lens holding table by the lens performance measuring unit,
The optical axis of the unprocessed spectacle lens, the astigmatic axis is measured, and the calculation control unit uses the measurement result of the lens performance measuring unit and the lens frame shape data of the spectacle frame prepared in advance to determine the optical axis of the lens meter. The present invention relates to a spectacle lens processing system that calculates and outputs unprocessed spectacle lens grinding data based on the above, and the lens meter includes a lens performance measurement unit and a calculation control unit, and the lens performance measurement unit does not process the raw data. With the spectacle lens held on the spectacle lens holding table,
The optical axis of the raw spectacle lens, measuring the astigmatic axis, the arithmetic control unit based on the measurement result of the lens performance measurement unit and the lens frame shape data of the spectacle frame prepared in advance, prescription data of the spectacle wearer. Relates to a spectacle lens processing system for calculating the shape center of a lens frame in the unprocessed spectacle lens and outputting it as an axial position, and the lens meter includes a lens performance measuring unit and a calculation control unit, While the raw spectacle lens is held on the spectacle lens holder by the lens performance measuring unit, the optical axis of the raw spectacle lens and the astigmatic axis are measured, and the arithmetic control unit measures the lens performance measuring unit. The shape center of the lens frame in the raw spectacle lens is calculated based on the result and the lens frame shape data of the spectacle frame and the prescription data of the spectacle wearer prepared in advance, and based on the shape center. Can calculate the eyeglass lens grinding data,
According to the spectacle lens processing system for outputting, the shaft driving machine includes a slide table on which the spectacle lens holding table is positioned and installed, and the slide table can be freely positionally adjusted in the horizontal direction. The present invention relates to a spectacle lens processing system in which the shape center of a lens frame calculated by the lens meter by position adjustment is matched or substantially matched with the machine center of the axial striking machine, and the spectacle lens holder is an unprocessed spectacle lens. A spectacle lens processing system comprising: a transparent lens holder on which a lens is mounted, and a display unit provided below the lens holder, and an image for aligning an unprocessed spectacle lens is displayed on the display unit. Further, in an eyeglass lens processing system for processing an unprocessed eyeglass lens according to the shape of the eyeglass frame, at least a lens frame shape of the eyeglass frame Lens frame shape measuring instrument for measuring the spectacles, a lens meter for measuring the performance of the unprocessed spectacle lens, an axial machine for attaching the chuck for grinding to the unprocessed spectacle lens, and grinding the unprocessed spectacle lens to the lens frame. And a spectacle lens holding base for holding a raw spectacle lens, the spectacle lens holding base being capable of being positioned at predetermined positions with respect to the lens meter and the axial driving machine, respectively. The lens frame shape data of the spectacle frame measured by the measuring instrument, the prescription data is input to the lens meter, and the raw spectacle lens is held by the lens performance measuring unit on the spectacle lens holding table, The optical axis and the astigmatic axis of the eyeglasses, and the arithmetic control unit measures the measurement result of the lens performance measuring unit and the lens frame shape The spectacle lens grinding data based on the axial position of the unprocessed spectacle lens as a reference, based on the prescription data of the spectacle wearer, and output the spectacle lens grinding data to the grinding machine. The machine relates to an eyeglass lens processing system for grinding an unprocessed eyeglass lens based on the eyeglass lens grinding data.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

The first embodiment will be described below. First, an outline of a spectacle lens processing system according to the first embodiment will be described with reference to FIG.

In the figure, 1 is a spectacle frame shape measuring instrument, 2 is a lens meter, 3 is an axial striking machine, 4 is a ball shaving machine, and the spectacle frame shape measuring instrument 1, the lens meter 2 and the ball shaving machine are shown. 4 are mutually connected by a required communication means 5 such as a LAN, and are also connected to a computer (not shown). still,
The computer can be omitted by using the functions of the CPU included in the spectacle frame shape measuring instrument 1, the lens meter 2, and the ball scraper 4.

The eyeglass frame shape measuring instrument 1 drives and controls the lens frame shape measuring section 6 and the lens frame shape measuring section 6,
Arithmetic control unit 7 for acquiring and storing measured values, operation unit 8, and input / output unit 9 for inputting / outputting data to / from the arithmetic control unit 7.
It is equipped with.

The lens meter 2 is a lens performance measuring section 11 for measuring the optical axis, astigmatic axis, lens dioptric power, etc. of the lens, and the position of the optical axis of the lens and the astigmatic axis based on the measurement results from the lens performance measuring section 11. The calculation control unit 12 that calculates the angle of the calculation result, displays the calculation result on the display unit 14, and sends the calculation result through the input / output unit 15, and inputs the required data to the calculation control unit 12 to perform the measurement operation. An operation unit 13 for issuing a command is provided.

The grinding machine 4 includes a lens grinding section 16, an arithmetic control section 17 for driving and controlling the lens grinding section 16, the arithmetic control section 17 is an input / output section 19 for exchanging data necessary for lens grinding, and an operating section. Eighteen.

In FIGS. 2 and 3, the lens meter 2 is shown.
Will be described.

The lens performance measuring unit 1 including a light projecting unit 22, a light receiving unit 23, etc., inside the housing 21 of the lens meter 2.
1 and the arithmetic and control unit 12 are housed, and the light projecting unit 22
A measuring table 24 is provided between the light receiving section 23 and the light receiving section 23, and at least three positioning sections 25 are provided on the measuring table 24, and positioning holes 26 are formed in the positioning section 25.

An eyeglass lens holder 27 shown in FIG. 3 is installed on the positioning unit 25.

The eyeglass lens holder 27 is a lens holder 2
8, the lens holder 28 is provided with an opening 29, and the center of the opening 29 (the center of the spectacle lens holding table 27) is aligned with the optical axes 31 of the light projecting section 22 and the light receiving section 23. It matches. Positioning pins 32 that can be inserted into and removed from the positioning holes 26 are provided upright on the lower surface of the lens holder 28, and the tips of the positioning pins 32 are chamfered. Lens pressers 33 are provided on the upper surface of the lens holder 28 at required positions in the circumferential direction, at least three positions.
Has appropriate elasticity and is rotatable or removable, so that the unprocessed spectacle lens 34 can be easily attached and detached and stably fixed. When the raw spectacle lens 34 is held on the lens holder 28 by the lens retainer 33, the optical axis of the raw spectacle lens 34 is substantially aligned with the optical axis 31.

The lens performance measuring unit 11 has a measurement opening 35 penetrating through the opening 29 of the lens holder 28 and protruding upward, and the upper end of the measurement opening 35 is the same as that of the unprocessed spectacle lens 34. It is designed to be almost in contact with the bottom surface.

The shaft driving machine 3 will be described with reference to FIG.

The striking machine 3 is provided with a striking base 36, on which the positioning pin 3 of the spectacle lens holding base 27 is attached.
2 is provided with a positioning portion 37 that can be inserted and removed. In a state where the positioning pin 32 is fitted to the positioning portion 37 and the spectacle lens holding base 27 is positioned and placed, the center of the spectacle lens holding base 27 coincides with the machine center 38 of the axial driving machine 3. ing.

A support rod 39 is provided which extends above the abutment table 36 and can be raised and lowered and freely rotatable. A horizontally extending rotary arm 41 is fixed to the upper end of the support rod 39, and a tip end of the rotary arm 41 is provided. The lens chuck 42 is removable. The rotating arm 41 can be retracted out of the machine so as not to get in the way when the spectacle lens holding base 27 is attached and detached, and is rotated inward during the axial striking work, and the chuck axis 43 of the lens chuck 42 becomes the machine center 38. Positioned to match.

The operation of the spectacle lens processing system including the lens meter 2 and the hammering machine 3 will be described.

The shape of the lens frame of the spectacle frame is measured by the spectacle frame shape measuring device 1, and the measurement data is input to the arithmetic control section 12 via the communication means 5 and the input / output section 15. Further, the prescription data of the spectacle wearer, that is, the spectacle power, the astigmatic axis angle and the like are input to the arithmetic control unit 12 through the communication unit 5 or directly from the operation unit 13.

With the lens stand 28 removed, the unprocessed spectacle lens 34 is attached to the lens stand 28.
Mounted on.

The lens holder 28 is attached to the positioning portion 25.
The lens holder 28 is positioned with respect to the lens meter 2 by fitting the positioning pin 32 into the positioning hole 26, and the center of the lens holder 28 is aligned with the optical axis 31.

The lens performance measuring unit 11 measures the lens performance of the unprocessed spectacle lens 34, and the position of the optical axis of the unprocessed spectacle lens 34 (the position of the optical axis when the optical axis 31 is the origin). The astigmatic axis angle with respect to the lens holder 28 is measured. Incidentally, the optical axis position of the unprocessed spectacle lens 34 is generally the pupil position.

Further, since the data of the lens frame of the spectacle frame and the data of the prescription (pupil position, astigmatic axis angle) are input from the spectacle frame shape measuring instrument 1 to the calculation control unit 12, the calculation control unit 12 12, the position and orientation of the lens frame in the unprocessed spectacle lens 34 is calculated with reference to the optical axis 31. The calculation result is grinding data calculated with the optical axis 31 as a reference.

Although the position of the optical axis of the unprocessed spectacle lens 34 does not necessarily coincide with the optical axis 31 of the lens meter 2, the position of the obtained optical axis of the unprocessed spectacle lens 34 is the same as that of the optical axis. It is eccentric with respect to the shaft 31.

Therefore, by correcting the grinding data based on the optical axis 31 by the eccentricity, the corrected grinding data (hereinafter referred to as practical grinding data) based on the optical axis 31 is calculated, and the practical grinding data is It is input to the ball shaving machine 4 via the entry output unit 15 and the communication unit 5.

The spectacle lens holding base 27 is removed from the positioning portion 25, and the positioning pin 32 is fitted and attached to the positioning portion 37 of the axial striking machine 3. As described above, the optical axis 31 and the center of the lens holder 28 are aligned with each other, and the mechanical center 38 and the center of the eyeglass lens holder 27 are aligned with each other. Therefore, the optical axis 31 of the lens meter 2 is aligned with each other.
The relative positional relationship between the unprocessed eyeglass lens 34 and the unprocessed eyeglass lens 34 is the same as the relative positional relationship between the machine center 38 of the shaft driving machine 3 and the unprocessed eyeglass lens 34.

The rotating arm 41 is rotated, and the rotating arm 41 is positioned so that the chuck shaft center 43 coincides with the machine center 38. The rotating arm 41 is lowered, the lens chuck 42 is attached to the raw spectacle lens 34, and the rotating arm 41 is removed.

The position where the lens chuck 42 is attached is geometrically the same as the position where the lens chuck 42 is attached on the optical axis 31 of the lens meter 2.

The lens chuck 42 can be attached to the rotary arm 41 only in one direction, and can be attached to the chuck attachment portion (not shown) of the lens grinding portion 16 of the ball grinding machine 4. However, the attachment is possible only in one direction, and the astigmatic axis angle measured by the lens meter 2 attaches the unprocessed spectacle lens 34 to the lens grinding portion 16 via the lens chuck 42. By that,
It is reflected as an astigmatic axis angle with respect to the lens grinding portion 16.

The grinding machine 4 grinds the unprocessed eyeglass lens 34 on the basis of the practical grinding data input from the lens meter 2 via the input / output unit 19.

Then, in the process from the lens performance measuring step with the lens meter 2 to the mounting of the unprocessed spectacle lens 34 on the lens grinding section 16, the position adjustment of the unprocessed spectacle lens 34 by the operator. Since the work is omitted, the workability is remarkably improved, the human error is eliminated, and the accuracy is improved.

Further, in the present embodiment, the stamping step, the optical axis adjusting step, and the astigmatic axis adjusting step are also unnecessary.

In the present embodiment, the communication means 5 is used to exchange the data, but the eyeglass frame shape measuring instrument 1, the lens meter 2, and the ball shaving machine 4 are connected by the communication means 5. If not, a recording medium such as an FD or a memory card may be used, or data may be printed out and the operation unit 13 or the operation unit 18 may be used.
Alternatively, the operator may directly input.

The optical axis 31 and the center of the lens holder 28, and the machine center 38 and the center of the spectacle lens holder 27 need not necessarily be aligned. In this case, the amounts of deviation between the optical axis 31 and the center of the lens holder 28 and between the machine center 38 and the center of the spectacle lens holding table 27 are known values that are mechanically determined. The amount of deviation may be corrected and the practical grinding data may be calculated.

Further, in the above-described embodiment, the present invention can be carried out without problems even for a multifocal lens and a progressive lens.

Furthermore, in the above embodiment, the grinding data is calculated by the lens meter 2, but the lens frame shape data measured by the eyeglass frame shape measuring instrument 1 is calculated by the calculation control unit via the input / output unit 19. Alternatively, it may be input to 17 and calculated by the calculation control unit 17.

The second embodiment will be described with reference to FIGS.

In FIGS. 5 and 6, the same parts as those shown in FIGS. 1 to 4 are designated by the same reference numerals.

The eyeglass frame shape measuring instrument 1, the lens meter 2, the hammering machine 3, and the ball shaving machine 4 are connected to each other by a required communication means 5 such as a LAN, and also to a computer (not shown).

The spectacle frame shape measuring instrument 1, the lens meter 2, the ball slide machine 4, and the spectacle lens holding table 27 are the same as those described above, and therefore their explanations are omitted.

The axial striking machine 3 is provided with a lens alignment section 45, a calculation control section 46, an operation section 47 and an input / output section 48, and the lens alignment section 45 is a mounting position of the lens chuck 42 of the unprocessed spectacle lens 34. And the machine center 38 of the shaft driving machine 3
And the arithmetic control unit 46 controls the driving of the lens alignment unit 45, and the input / output unit 48 controls the spectacle frame shape measuring instrument 1, the lens meter 2, and the grinding machine 4. Data is transmitted and received via the communication unit 5, the operation unit 47 gives an instruction for an axial driving operation, or directly inputs the data.

FIG. 6 shows a shaft driving machine 3 according to the second embodiment.
A slide table 49 is provided on the table 36 so as to be freely movable in two horizontal directions, and a driving means (not shown) such as a cylinder is provided between the slide table 49 and the table 36. Set up. A positioning hole 51 is formed in the slide table 49, and the positioning pin 32 of the spectacle lens holding base 27 is removably fitted into the positioning hole 51.

When the spectacle lens holding base 27 is attached to the slide table 49 and the slide table 49 is at the reference position, the center of the spectacle lens holding base 27 is aligned with the machine center 38 of the shaft driving machine 3. I am doing it.
The slide table 49 has an opening 53 concentric with the opening 29, and the abutment table 36 has an opening 54 centered on the machine center 38.

A support rod 39 is provided which extends upward from the abutment table 36 and can be raised and lowered and freely rotatable. A horizontally extending rotary arm 41 is fixed to an upper end of the support rod 39, and a tip end of the rotary arm 41 is fixed. The lens chuck 42 is removable. The rotating arm 41 can be retracted out of the machine so as not to get in the way when the spectacle lens holding base 27 is attached and detached, and is rotated inward during the axial striking work, and the chuck axis 43 of the lens chuck 42 becomes the machine center 38. Positioned to match.

The operation of the eyeglass lens processing system according to the second embodiment will be described.

The shape of the lens frame of the spectacle frame is measured by the spectacle frame shape measuring instrument 1, and the measurement data is input to the arithmetic control section 12 via the communication means 5 and the input / output section 15. Further, the prescription data of the spectacle wearer, that is, the spectacle power, the astigmatic axis angle and the like are input to the arithmetic control unit 12 through the communication unit 5 or directly from the operation unit 13.

With the lens holder 28 removed, the unprocessed spectacle lens 34 is attached substantially at the center of the lens holder 28. The unprocessed spectacle lens 34 is placed substantially at the center of the lens holder 28 and semi-fixed by a lens retainer 33.

The lens holder 28 is attached to the positioning portion 25. By fitting the positioning pin 32 into the positioning hole 26, the lens holder 28 is positioned with respect to the lens meter 2, and the center of the lens holder 28 is aligned with the optical axis 31 (see FIG. 2). ).

The lens performance measuring unit 11 measures the lens performance of the unprocessed spectacle lens 34, and measures the position of the optical axis of the unprocessed spectacle lens 34 and the astigmatic axis angle with respect to the lens holder 28. .

Further, since the data of the lens frame shape of the spectacle frame and the prescription data of the spectacle wearer (pupil position, astigmatic axis angle) are input from the spectacle frame shape measuring instrument 1 to the arithmetic control section 12. The arithmetic and control unit 12 calculates the position and orientation of the lens frame in the unprocessed spectacle lens 34 with the optical axis of the unprocessed spectacle lens 34 as a reference. The calculation result is grinding data based on the optical axis.

The position of the optical axis of the unprocessed spectacle lens 34 does not necessarily coincide with the optical axis 31 of the lens meter 2, but the obtained position of the optical axis is an eccentricity α with respect to the optical axis 31. is there.

Further, it is preferable that the lens grinding portion 16 of the grinding machine 4 chucks the unprocessed spectacle lens 34 at the center O of the shape of the lens frame. Misalignment β between the shape center of the lens frame and the optical axis of the unprocessed spectacle lens 34
Is calculated from the prescription data.

Therefore, the positional deviation Δ between the shape center O of the lens frame and the optical axis 31 depends on the geometrical relationship between the eccentricity α and the positional deviation β, the astigmatic axis angle of the unprocessed spectacle lens 34, and the prescription. Calculated from the astigmatic axis angle.
That is, the shape center O of the lens frame with respect to the optical axis 31 is calculated.

The positional deviation Δ is calculated by the arithmetic control unit 46 via the input / output unit 15, the communication means 5, and the input / output unit 48.
Sent to.

Further, the arithmetic control section 12 calculates grinding data (hereinafter referred to as practical grinding data) with the shape center O of the lens frame as a reference, and the practical grinding data is transmitted through the input / output section 15 to the communication means 5. And is transmitted to the ball shaving machine 4.

The spectacle lens holding base 27 is removed from the lens meter 2, the positioning pin 32 is fitted into the positioning hole 51 of the slide table 49 set as the reference position, and the spectacle lens holding is performed by the axial driving machine 3. Attach the stand 27.

At the reference position of the slide table 49, the mechanical center 38 and the center of the eyeglass lens holder 27 are aligned with each other, and the optical axis 31 and the lens holder 28 are aligned with each other. The relative positional relationship between the machine center 38 of the hammer 3 and the unprocessed spectacle lens 34 is the same as the relative positional relationship between the optical axis 31 of the lens meter 2 and the unprocessed spectacle lens 34.

The arithmetic control section 46 drives the lens positioning section 45 based on the positional deviation Δ to move the slide table 49 by −Δ. The movement of the slide table 49 causes the shape center O of the lens frame to move to the machine center 3
Match 8

The rotary arm 41 is rotated, and the rotary arm 41 is positioned so that the chuck shaft center 43 is aligned with the machine center 38. The rotating arm 41 is lowered, the lens chuck 42 is attached to the raw spectacle lens 34, and the rotating arm 41 is removed.

The position where the lens chuck 42 is attached coincides or substantially coincides with the shape center O of the lens frame of the unprocessed spectacle lens 34. If they do not completely match, the amount of deviation is obtained by calculation, and is input to the grinding machine 4 as correction data when the unmachined spectacle lens 34 is ground by the grinding machine 4.

The lens chuck 42 has the rotating arm 41.
Can be attached only in one direction, and can also be attached only in one direction to the chuck attachment portion (not shown) of the lens grinding portion 16 of the ball grinding machine 4. The astigmatic axis angle measured by the lens meter 2 is obtained by attaching the lens chuck 42 to the lens grinding section 16 via the lens chuck 42.
It is reflected as an astigmatic axis angle with respect to the lens grinding portion 16.

The grinding machine 4 grinds the unprocessed eyeglass lens 34 with the shape center O of the lens frame as a reference based on the practical grinding data input from the lens meter 2 through the input / output unit 19. . If the chucking position does not match the shape center O, the unprocessed spectacle lens 34 is ground based on the practical grinding data corrected by the correction data as described above.

Thus, the second embodiment is useful when the shape center O of the lens frame is largely deviated from the optical axis of the unprocessed spectacle lens 34. The amount of deviation needs to be within a range in which the lens chuck 42 does not exceed the size of the spectacle lens after grinding.

Also in the present embodiment, when the eyeglass frame shape measuring instrument 1, the lens meter 2, the hammering machine 3, and the ball slicing machine 4 are not connected by the communication means 5, , FD, memory card, or the like, or data may be printed out and input by the operator directly from the operation unit 13 or the operation unit 18.

In the above embodiment, the lens meter 2 and the axial driving machine 3 are separately provided. However, the lens meter 2 and the axial driving machine 3 are connected to each other, and the lens meter 2 and the axial driving machine 3 are connected to each other. It is also possible to provide a slide table that can move over the hammering machine 3 and move the slide table so that the lens holder 28 can be positioned at predetermined positions with respect to the lens meter 2 and the axial hammering machine 3, respectively. .

Next, a third embodiment will be described with reference to FIGS.

In FIG. 7, those equivalent to those shown in FIG. 1 are designated by the same reference numerals, and those equivalent to those shown in FIG. 8 are designated by the same reference numerals. The description of each is omitted.

The eyeglass lens holder 27 is a lens holder 28.
The lens holder 28 is made of a transparent material such as glass and has an opening 29 at the center thereof.
The center of 9 (the center of the spectacle lens holding table 27) is aligned with the optical axes 31 of the light projecting section 22 and the light receiving section 23. Positioning pins 32 that can be inserted into and removed from the positioning holes 26 are provided upright on the lower surface of the lens holder 28, and the tips of the positioning pins 32 are chamfered. A lens retainer 33 is provided on the upper surface of the lens holder 28 at a required position in the circumferential direction, at least 3
The lens retainer 33, which is provided at a location, has appropriate elasticity and is rotatable or removable, so that the unprocessed spectacle lens 34 can be easily attached and detached and stably fixed.

The spectacle lens holding base 27 can be installed on the lens meter 2, and in the installed state, the center of the spectacle lens holding base 27 coincides with the optical axis 31. Further, when the raw spectacle lens 34 is held on the lens holder 28, the optical axis of the raw spectacle lens 34 is substantially aligned with the optical axis 31.

The shaft driving machine 3 is provided with a display unit, preferably a liquid crystal display unit 55, which is connected to the arithmetic control unit 12 and is driven and controlled by the arithmetic control unit 12, and the arithmetic control unit 12 is operated. Or the measurement data obtained by the eyeglass frame shape measuring instrument 1 and the prescription data, for example, lens frame shape, optical axis position, lens frame center,
An image for lens alignment such as an astigmatic axis is displayed. The display of the liquid crystal display 55 can be seen through the lens stand 28.

A slide table 49 is provided on the table 36 so as to be freely movable in two horizontal directions.
Locking means (not shown) is provided for manually moving 9 and fixing it at an arbitrary position. The slide table 49 is provided with an opening 53 concentric with the opening 29. The opening 53 is sufficiently larger than the unprocessed spectacle lens 34, and the liquid crystal display unit 5 is provided in the opening 53.
5, the liquid crystal display 55 is fixed to the table 36, and the center of the liquid crystal display 55 coincides with the machine center 38.

When the spectacle lens holding base 27 is attached to the slide table 49 and the slide table 49 is at the reference position, the center of the spectacle lens holding base 27 is aligned with the machine center 38 of the shaft driving machine 3. I am doing it.
An opening 54 centered on the machine center 38 is formed in the abutment table 36.

A support rod 39 is provided which extends upward from the abutment table 36 and can be raised and lowered and freely rotatable. A horizontally extending rotary arm 41 is fixed to the upper end of the support rod 39, and a tip end of the rotary arm 41 is provided. The lens chuck 42 is removable. The rotating arm 41 can be retracted out of the machine so as not to get in the way when the spectacle lens holding base 27 is attached and detached, and is rotated inward during the axial striking work, and the chuck axis 43 of the lens chuck 42 becomes the machine center 38. Positioned to match.

The lens center, the lens frame center, or the astigmatic axis is marked on the unprocessed spectacle lens 34,
As described above, the liquid crystal display unit 55 has a lens frame shape,
Images for lens alignment such as optical axis position, lens frame center, and astigmatic axis are displayed. Further, the center of the displayed lens frame coincides with or substantially coincides with the machine center 38.

The lens stand 28 is manually moved to align the marking point stamped on the unprocessed spectacle lens 34 and the figure displayed on the liquid crystal display 55.
For example, the center or optical axis of the lens frame is made to coincide with the center or optical axis of the lens frame displayed on the liquid crystal display 55, and the astigmatic axis marked on the raw spectacle lens 34 and the liquid crystal display 55 are displayed. Aligned with the astigmatic axis.

When the unprocessed spectacle lens 34 is aligned with the display on the liquid crystal display 55, the lens holder 28 is fixed by a locking means, the rotary arm 41 is rotated, and the lens chuck 42 is moved to the mechanical center 38. Position and position the shaft.

In the third embodiment, a driving mechanism for moving the slide table 49 is not required, and the axial striking work can be performed with a simple mechanism.

In the third embodiment as well, the lens meter 2 and the axial striking machine 3 are connected, and the slide table 49 can be moved between the lens meter 2 and the axial striking machine 3. Further, a mechanism capable of adjusting the axial striking position on the axial striking machine 3 may be used.

[0094]

As described above, according to the present invention, in a spectacle lens processing system for processing a raw spectacle lens in accordance with a lens frame shape of a spectacle frame, at least a lens for measuring the performance of the raw spectacle lens. A meter and an axial machine that attaches a chuck for grinding to the unprocessed eyeglass lens,
An eyeglass lens holding base for holding the unprocessed eyeglass lens is provided, and the eyeglass lens holding base can be positioned at predetermined positions with respect to the lens meter and the axial driving machine, respectively. Axial hammering can be performed immediately without adjusting the lens position for the lens, and the operator's positioning work and adjustment work from the optical measurement of the lens of the spectacle lens processing to the axial striking process are omitted. It has the excellent effects of preventing errors and work errors, improving work efficiency, and improving machining accuracy.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a lens meter which constitutes the first embodiment.

FIG. 3 is a sectional view of a spectacle lens holding base in the first embodiment of the same.

FIG. 4 is a schematic configuration diagram showing a shaft driving machine constituting the first embodiment of the same.

FIG. 5 is a schematic configuration diagram showing a second embodiment of the present invention.

FIG. 6 is a schematic configuration diagram showing a shaft driving machine constituting a second embodiment of the same.

FIG. 7 is a schematic configuration diagram showing a third embodiment of the present invention.

FIG. 8 is a schematic configuration diagram showing a shaft driving machine constituting the third embodiment of the same.

[Explanation of symbols]

1 Lens frame shape measuring instrument 2 Lens meter 3-axis machine 4 ball cutter 5 Communication means 11 Lens performance measurement section 12 Arithmetic control unit 27 Eyeglass lens holder 32 Positioning pin 34 Raw spectacle lens 42 lens chuck 49 slide table

Claims (9)

[Claims] 1. A spectacle lens processing system for processing a raw spectacle lens according to a lens frame shape of a spectacle frame, wherein a lens meter for measuring at least the performance of the raw spectacle lens and a grinding spectacle lens And a spectacle lens holder for holding the unprocessed spectacle lens, and the spectacle lens holder can be positioned at predetermined positions with respect to the lens meter and the hammer, respectively. A lens processing system for eyeglasses. 2. The spectacle lens processing system according to claim 1, wherein the center of the spectacle lens holding base coincides with the optical axis of the lens meter and coincides with the axial striking position of the axial striking machine. 3. The spectacle lens processing system according to claim 1, wherein the spectacle lens holding table is provided so as to be movable between the lens meter and the axial striking machine. 4. The lens meter includes a lens performance measuring unit and an arithmetic control unit, and the raw spectacle lens is held by the lens performance measuring unit on the spectacle lens holding table, and the raw spectacles are processed. The optical axis of the lens, measuring the astigmatic axis, the arithmetic control unit with the optical axis of the lens meter as a reference based on the measurement result of the lens performance measuring unit and the lens frame shape data of the eyeglass frame prepared in advance. The spectacle lens processing system according to claim 1, wherein raw spectacle lens grinding data is calculated and output. 5. The lens meter includes a lens performance measuring unit and an arithmetic control unit, and the raw spectacle lens is held by the lens performance measuring unit on the spectacle lens holding table to obtain the raw spectacles. The optical axis of the lens, measuring the astigmatic axis, the arithmetic and control unit, the measurement result of the lens performance measurement unit and the lens frame shape data of the eyeglass frame prepared in advance,
The eyeglass lens processing system according to claim 1, wherein the center of the shape of the lens frame in the unprocessed eyeglass lens is calculated based on the prescription data of the eyeglass wearer and is output as the axial striking position. 6. The lens meter includes a lens performance measuring unit and an arithmetic control unit, and the raw spectacle lens is held by the lens performance measuring unit on the spectacle lens holding table to obtain the raw spectacles. The optical axis of the lens, measuring the astigmatic axis, the arithmetic and control unit, the measurement result of the lens performance measurement unit and the lens frame shape data of the eyeglass frame prepared in advance,
The eyeglass lens grinding data is calculated and output based on the shape center of the lens frame in the unprocessed eyeglass lens based on the eyeglass wearer's prescription data.
Eyeglass lens processing system. 7. The axial striking machine comprises a slide table on which the spectacle lens holding base is positioned and installed, the slide table is freely positionally adjustable in the horizontal direction, and the lens is adjusted by adjusting the position of the slide table. 2. The spectacle lens processing system according to claim 1, wherein the shape center of the lens frame calculated by the meter is made to match or substantially match the machine center of the axial striking machine. 8. The spectacle lens holding base comprises a transparent lens holder on which a raw spectacle lens is placed, and a display section provided below the lens holder, and the display section is unprocessed. The eyeglass lens processing system according to claim 3 or 7, wherein an image for eyeglass lens alignment is displayed. 9. An eyeglass lens processing system for processing an unprocessed eyeglass lens according to the shape of an eyeglass frame,
At least a lens frame shape measuring instrument for measuring the lens frame shape of the spectacle frame, a lens meter for measuring the performance of the unprocessed spectacle lens, a shafting machine for attaching a chuck for grinding to the unprocessed spectacle lens, and the unprocessed spectacle lens It is equipped with a ball-sliding machine that grinds to match the lens frame, and a spectacle lens holding base that holds unprocessed spectacle lenses, and the spectacle lens holding base can be positioned at predetermined positions with respect to the lens meter and the axial driving machine, respectively. The lens frame shape data of the spectacle frame measured by the lens frame shape measuring instrument, the prescription data are input to the lens meter, and the raw spectacle lens is held on the spectacle lens holding table by the lens performance measuring unit. In this state, the optical axis and astigmatism axis of the unprocessed spectacle lens are measured, and the calculation control unit prepares in advance with the measurement result of the lens performance measuring unit. Based on the lens frame shape data of the spectacle frame and the prescription data of the spectacle wearer, the spectacle lens grinding data based on the axial position of the unprocessed spectacle lens is calculated, and the spectacle lens grinding data is used as the ball slide. A spectacle lens processing system, wherein the spectacle lens processing apparatus outputs the spectacle lens to a machine, and the grinding machine grinds a raw spectacle lens based on the spectacle lens grinding data.