JPH07112355A - Shape measuring device for rimless glasses - Google Patents

Abstract

PURPOSE:To provide a shape measuring device for glasses which is constituted to determine a distance between the lens geometrical centers of a rimless frame through simple operation. CONSTITUTION:A shape measuring device for a rimless glasses are provided with a lens holding device 900 capable of holding the eyeglasses of rimless glasses and a rimless frame F having a nose contact part and the eyeglasses; a shape measuring part measuring the shape of a lens held on the lens holding device 900; a width measuring means measuring the given width of the rim frame F; and a computing part computing a distance between the lens geometrical centers of the rimless glasses from a value measured by the shape measuring part and data measured by the width measuring means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shape measuring device for spectacles capable of obtaining a distance between lens geometric centers of rimless spectacles.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application No. 60-287491 (Japanese Patent Application Laid-Open No. 61-267) previously filed by the present applicant.
As disclosed in Japanese Laid-Open Patent Publication No. 732), there is a device in which the shapes of both the lens frame (lens frame) of the spectacle frame and the lens can be measured.

However, this device cannot measure the distance between the lens geometric centers of the rimless frame.

Therefore, in order to measure the distance between the lens geometric centers of the rimless frame using this device,
The width of the rimless frame may be measured with the single lens attached.

In order to measure the lens geometric center distance with such an apparatus, first, the one-eye lens is set on the holder body, and the holder body is attached to the supporting device section of the measuring machine body to determine the lens shape. taking measurement.

Next, the holder main body is removed from the supporting device portion, the rimless frame having the single-lens attached thereto is set on the frame holding device, and the frame holding device is attached to the supporting device portion to fix it at a predetermined position. The frame width is measured, and the distance between the lens geometric centers of the rimless frame is obtained from these measurement data.

[0007]

[Problems to be Solved by the Invention] However, in this way,
In order to measure the distance between the lens geometric centers of the rimless frame, the holder body is attached to the support device part, after measuring the lens shape, the holder body is removed and the frame holding device is attached to this support device part. I had to. That is, it is necessary to perform the mounting operation twice on the support device portion, which causes a troublesome problem.

Therefore, the present invention has been made in view of the above problems, and an object thereof is to provide a shape measuring device for glasses capable of obtaining the lens geometric center distance of a rimless frame by a simple mounting operation. To do.

[0009]

In order to achieve the above object, the present invention has a frame holding portion capable of holding a single eye lens of rimless glasses, a nose pad and a rimless frame having a single eye lens, respectively. A shape measuring unit that measures the shape of the lens held by the frame holding unit, a width measuring unit that measures a predetermined width of the rimless frame, a value measured by the shape measuring unit, and the width measuring unit measures And a calculation unit that calculates the distance between the geometric centers of the lenses of the rimless glasses.

[0010]

According to the present invention, the shape measuring section measures the shape of the lens held by the frame holding section, and the width measuring means measures the predetermined width of the rimless frame. The calculation unit calculates the distance between the lens geometric centers of the rimless glasses from the data measured by the means.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 18 shows a shape measuring instrument which is used by being mounted on a ball grinding machine (not shown) for lens processing.

This shape measuring instrument is roughly divided into three parts, namely, a frame holding device 100 for holding a frame.
And a lens holding device 900 (lens holder) for holding the lens, and one of the frame holding device 100 and the lens holding device 900, and selectively transfers the holding device to a measurement surface and measures the same. A supporting device unit 200A that controls movement within a plane, and a measuring unit 30 that digitally measures the lens frame of the spectacle frame or the shape of the lens.
It is composed of 0 and 0. The frame holding device 100
Since the one having the same structure as that disclosed in Japanese Patent Application Laid-Open No. 61-274859 is used for this, the same reference numerals as those described in this publication are used and the detailed description thereof is omitted. .

The supporting device 200A is a housing 2 as a main body.
Has 01. The housing 201 has feet 253 and 254, and the feet 253 and 254 are the housing of the lens grinding device.
It is slidably mounted on rails 251 and 252 attached to (not shown). Further, rails 255 and 256 are provided on the door 10a of the housing (not shown) of the lens grinding apparatus, and when the door 10a is opened, the rails 251 and 251 are provided.
It is configured to be located on the extension line of 52. With this configuration, the operator can slide the housing 201 as needed and pull it out of the housing of the lens grinding device.

The housing 201 also has guide rails 202a and 202b installed on the housing 201 in parallel with the longitudinal direction (X-axis direction of the measurement coordinate system), and the stage 203 is slidable on the guide rails. It is placed in. A female screw 204 is formed on the lower surface of the moving stage 203, and an X-axis feed screw 205 is screwed onto the female screw 204. The X-axis feed screw 205 is rotated by an X-axis motor 206 which is a pulse motor.

Both side flanges 207 of the moving stage 203
A guide shaft 208 is passed between a and 207b in parallel with the Y-axis direction of the measurement coordinate system, and the guide shaft 208 is configured to be rotatable by a guide shaft motor 209 attached to the flange 207a. The guide shaft 208 is
A single guide groove 210 is formed on the outer surface parallel to the axis. Hands 211 and 212 as holder holders are slidably supported on the guide shaft 208. Protrusions 213a and 214a are formed in the shaft holes 213 and 214 of the hands 211 and 212, respectively. The protrusions 213a and 214a are engaged with the guide groove 210 of the guide shaft 208, and the hands 211, The rotation of the guide 212 around the guide shaft 208 is prevented.

The hand 211 has two slopes 2 which intersect each other.
15 and 216, the other hand 211 also has two slopes 217 and 218 that intersect each other. The ridge line 220 formed by both slopes 217 and 218 of the hand 212 is parallel to the ridge line 219 formed by the slopes 215 and 216 of the hand 211, and is located in the same plane.
The angle formed by 7, 218 and the angle formed by the slopes 215, 216 are the same. And both hands 2
As shown in FIG. 19, a spring 230 is stretched between 11 and 212. Further, notches 215a and 217a are formed on the slopes 215 and 217, respectively.

An arm 241 having a contact wheel 242 at one end is attached to the hand 212 so as to be rotatable around the other end. The arm 241 is always in contact with the micro switch 244 by the spring 243. The contact wheel 242, the arm 241, the spring 243, and the micro switch 244 constitute a left / right eye determining device 240 of the frame. Moreover, the lens holding device 900 is attached to the hand 212.
A sensor 245 such as a micro switch for detecting is attached.

The hand 212 has an encoder 70.
0 is attached, and this encoder 700 generates a pulse each time the hand 212 moves along the guide 208 in the left-right direction by a predetermined distance. This pulse is counted by the counter, and the moving distance of the hand 212 is obtained by the counted number of this count.

When the hand 212 moves to the leftmost position (initial position) where the motor 224 is located, the micro switch 7
01 detects this and resets a counter.

Rear flange 221 of moving stage 203
A pulley 222 is rotatably supported at one end thereof, and a Y-axis motor 224 including a pulse motor having a pulley 223 is attached to the other end of the rear flange 221. Both ends of a mini-chia belt 226 with springs 225 interposed between the pulleys 223 and 224 are fixed to pins 227 planted on the upper surface of the hand 211. On the other hand,
A collar 228 is formed on the upper surface of the hand 212,
The collar 228 is configured to come into contact with the side surface of the pin 229 planted on the rear flange 221 of the moving stage 203 by the movement of the hand 212.

The measuring unit (shape measuring unit) 300 is a housing 20.
The sensor arm rotating motor 301 is composed of a pulse motor and is attached to the lower surface of the housing 1. The sensor arm portion 302 is rotatably supported on the upper surface of the housing 201. A belt 305 is provided between the pulley 303 attached to the rotating shaft of the motor 301 and the rotating shaft 304 of the sensor arm.
And the rotation of the motor 301 is transmitted to the sensor arm unit 302.

The sensor arm 302 has its base 310.
Has two rails 311 and 311 passed above
The sensor head 31 is provided on the rails 311 and 311.
A second slider 350 is slidably mounted, and a magnetic scale reading head 313 is mounted on one side surface of the slider 350 of the sensor head portion 312. The magnetic scale read head 313 is configured to read the magnetic scale 314 attached to the base 310 in parallel with the rail 311, and detect the amount of movement of the sensor head portion 312. Further, one end of a constant torque spring 316 of a spring device 315 that constantly pulls the head portion 312 toward the arm end side surface (left side in FIG. 18) is fixed to the other side of the slider 350 of the sensor head portion 312. The slider 350 is constantly biased toward the spring device 315 by the biasing force of the constant torque spring 316.

The magnetic scale reading head 313 and the magnetic scale 314 of the sensor head portion 312 constitute a moving amount measuring means.

FIG. 21 shows the structure of the spring device 315. In the casing 317 attached to the base 310 of the sensor arm unit 302, the electromagnetic magnet 3
18 is provided, and the slide shaft 319 has a magnet 318.
Is configured to be slidable in the axial direction of the shaft hole.
The slide shaft 319 has flanges 320 and 321. A spring 323 is interposed between the flange 320 and the wall of the casing 317, and the slide shaft 319 is always moved to the left by the spring 323. Clutch plates 324 and 325 are rotatably supported at the end of the slide shaft 319, and one end of a constant torque spring 316 is fixed to one clutch plate 324. A spring 326 having a slide shaft 319 fitted therein is interposed between the clutch plates 324 and 325 to constantly widen the gap between the clutch plates 324 and 325 to prevent contact between the constant torque spring 316 and the clutch plate 325. There is. Further, the washer 3 is attached to the end of the slide shaft 319.
27 is attached.

FIG. 20 shows the structure of the sensor head portion 312. A shaft hole 351 is formed in the vertical direction at one end of a slider 350 supported by a rail 311, and a sensor shaft 352 is inserted into this shaft hole 351. Has been done. The sensor shaft 352 is provided between the sensor shaft 352 and the shaft hole 351.
The ball bearing 353 held at the position is interposed, thereby smoothing the rotation of the sensor shaft 352 around the vertical axis and the movement in the vertical axis direction.

An arm 355 is attached to the center of the sensor shaft 352, and a soroban bead-shaped bevel filler 356 which is brought into contact with the bevel groove of the lens frame is provided on the upper part of the arm 355 as a frame filler (frame measuring means). ) Is rotatably supported as a shaft. The circumferential point of the bevel filler 356 is configured to be located on the center line of the vertical sensor shaft 352.

A pair of cylindrical shafts 360 and 361 are vertically fixed to the other end of the slider 350.
A lens measuring member 362 is provided on the lenses 60 and 361.

The lens measuring member 362 is the base 36.
3 and a cylindrical shaft 36 protruding from the lower surface of the base 363.
Mounting shafts 364, 36 removably fitted to 0, 361
5 (see FIG. 4A) and a filler 366 projecting in the center on the base 362. The filler 366 is a lens filler 366 having a contact surface with a predetermined radius of curvature in the upper stage.
a and a lens filler 36 having a flat contact surface in the lower stage
6b and. The filler 366 is tiltable as shown in FIGS. 4B and 4C.

Further, a lens holding device (frame holding portion)
As shown in FIGS. 3 and 5 to 9, the 900 has a channel-shaped holder main body 902 having flanges 901 and 901 on its side portions. A notch 903 is formed at the center of one end of the holder body 902,
The notch 903 is formed near the notch 903 as shown in FIGS. 6, 8 and 9.
Left and right detection plate 90 that opens and closes to distinguish the left and right of the lens
4 is attached so as to be rotatable in the direction of arrow 905.

The center of the holder body 902 is shown in FIGS.
No. 0, as shown in FIG. 11, a suction cup holder 910 is provided. This suction disk holding unit 910 is provided with a holder body 902.
A jig fitting cylinder 911 integrally formed in the jig, and notches 912 and 912 formed in the jig fitting cylinder 911,
Holder body 902 arranged in notches 912 and 912
Locking claws 913 and 913 provided integrally with the holder main body 9 provided near the upper part of the jig fitting cylinder 911.
The positioning table 914 is integrated with the positioning table 914, and the positioning table 915 is provided on the positioning table 914.

Further, the suction plate holder 910 selectively holds the template holder 920 shown in FIG. 12 or the lens holder 930 shown in FIG. The suction cup holder 910 and the lens holder 930 form a lens holder.

The template holder 920 shown in FIG. 12 has a shaft portion 921 and a positioning groove 92 provided at one end of the shaft portion 921.
2 and a flange 923 provided on the other end of the shaft portion 921.
And an annular locking groove 924 provided in the intermediate portion of the shaft portion 921 in the vicinity of the flange 923. A female screw cylinder 925 coaxial with the shaft portion 921 is integrally formed on the flange 923, and positioning pins 926 and 926 arranged at positions sandwiching the female screw cylinder 925 are integrally formed. . A fixing screw 927 is screwed into the female screw cylinder 925.

A template T attached to this template holder 920
A central hole 928 and pin holes 929, 929 that engage with the female screw cylinder 925 and the positioning pins 926, 926 are formed in the. Then, the center hole 928 and the pin holes 929 and 929 of the template T are inserted into the female screw cylinder 925 and the positioning pins 926 and 926 of the template holder 920 to fix the fixing screw 92.
By screwing 7 into the female screw cylinder 925, the template T is fixed to the single plate holder 920 by the fixing screw 927.

The lens holder 930 shown in FIG. 13 has a shaft portion 931 and a positioning groove 9 provided at one end of the shaft portion 931.
32, and a flange 933 provided on the other end of the shaft portion 931
And an annular locking groove K provided in the intermediate portion of the shaft portion 931 near the flange 933.

Then, the one-eye lens L is fixed on the flange 933 via the double-sided adhesive tape 934.

At the center of the holder body 902, a suction holding portion 910a is provided in the left-right direction (vertical direction in FIG. 6).
A holding portion 960 that slidably holds is provided. The lens holder 930 is attached to the suction holder 910a in the same manner as described above.

As shown in FIG. 7, a plate retainer 970 for retaining the lens placed on the lens retainer 930 is provided near the suction holder 910a. Plate retainer 970
Has a pressing portion 970a having elasticity.

Reference numeral 980 shown in FIG. 7 is a support portion for abutting the nose pad Fh of the rimless frame F to fix the rimless frame F. This support portion 980 is attached to a base portion 981 which is slidable along the slit S1 as shown in FIGS. Reference numeral 982 denotes a contact member that contacts the bridge Fb of the rimless frame F to fix the rimless frame F.
Is urged in the direction of the arrow by a spring (not shown) and the slit S
It is possible to move along 2. And the support member 9
The frame holding portion is constituted by 80 and the contact member 982. The biasing force of the spring is set to be smaller than the frictional resistance when sliding the base 981.

A structure other than the above is disclosed in JP-A-61-27.
The one disclosed in Japanese Patent No. 4859 is adopted.

Next, the operation of the lens shape measuring device having such a configuration will be described.

(1) Lens Frame Shape Measurement of Eyeglass Frame When measuring the shape of the lens frame (lens frame) 501, the frame holding device 10 is used for measuring the left and right lens frames of the eyeglass frame on the side to be measured.
It is held between zero sliders 156 and 156.

On the other hand, the housing 201 is pulled out from the housing of a lens grinding device (not shown), the hands 211 and 212 on the housing 201 side are inclined obliquely upward, and the lens measuring member 362 is moved to the slider 350 as shown in FIG. The hands 211 and 212 are opened against the spring force of the spring 230, and the frame holding device 100 holding the eyeglass frame is arranged between the hands 211 and 212.
The frame holding device 100 is held between the hands 211 and 212 by the spring force of the spring 230.

Since the sensor 245 cannot be turned on in this state, the CPU (arithmetic control circuit) (not shown)
It is detected that the lens holding device 900 is not attached between the frames 11 and 212 and the frame holding device 100 is held.

Thereafter, the slider 350 is moved to the center side of the rail 311 against the spring force of the constant torque spring 316, and the hands 211 and 212 are rotated downward until they become horizontal, and then the bevel filler 356 is removed. The spring force of the constant torque spring 316 causes the bevel groove 501a of the lens frame 501.
17 and 19 as shown in FIG. In this state, the motor 301 is operated to rotate the rotating shaft 304, thereby rotating the base 310 once. The movement amount of the bevel filler 356 at this time is determined by the magnetic scale reading head 3
13 to detect. At this time, the movement amount of the bevel filler 356 is recorded in association with the rotation angle of the base 310, and the shape of the lens frame 501 is calculated by the CPU or the like. A circuit configuration and a calculation method for such calculation are disclosed in Japanese Patent Laid-Open No.
The one disclosed in JP-A-1-274859 is adopted.

(2) Measurement of Template Shape On the other hand, when measuring the shape of the template T, the template T is attached to the template holder 920 as described above, and the template holder 920 is The shaft portion 931 is fitted into the jig fitting cylindrical portion 911 of the suction disk holding portion 910. At this time, the template holder 92
The positioning groove 922 of 0 is used as the protrusion 91 in the jig fitting tubular portion 911.
4, the engaging claws 913 and 913 engage with the engaging groove 924 of the template holder 920, and the lens holder 930.
Can be held by the suction disk holding unit 910.

On the other hand, the housing 201 is pulled out from the housing of the lens grinding device (not shown), the hands 211 and 212 on the housing 201 side are inclined obliquely upward, and the spacing between the hands 211 and 212 is set by the spring 230. The lens holding device 900 holding the template T is arranged between the hands 211 and 212 by opening the lens holding device 900 by the spring force of the spring 230.
Hold it in between.

In this state, the sensor 245 is turned on by the holder body 902 of the lens holding device 900, and this ON signal is input to a CPU (arithmetic control circuit) not shown. This CPU turns on the sensor 245 when the lens holding device 900 is attached between the hands 211 and 212.
Judge from the signal.

The left and right detection plates 9 of the holder body 902 are also
When the notch 903 is opened by rotating 04, when the lens holding device 900 is held between the hands 211 and 212, the contact wheel 242 enters into the notch 903 and the micro switch 244. Turns off.
On the other hand, the cutout 9 is formed in the left and right detection plates 904 of the holder body 902.
When 03 is closed, the contact ring 242 is held when the lens holding device 900 is held between the hands 211 and 212.
Is pressed by the left and right detection plates 904, and the micro switch 2
44 is turned on. Therefore, the microswitch 244
If the setting is made so that the right and left of the template T can be distinguished in the ON / OFF state, the data obtained by measuring the template T can be used for lens processing.

After such an operation, the slider 350 is moved to the center side of the rail 311 against the spring force of the constant torque spring 316, and the hands 211 and 212 are rotated downward until they become horizontal, and then the lens The filler 366 is brought into contact with the peripheral surface of the template T by the spring force of the constant torque spring 316 as shown in FIGS. In this state, the base 310 is rotated once by rotating the rotating shaft 304 for operating the motor 301, and the lens filler 36 at this time is rotated.
The moving amount of 6 is detected by the magnetic scale reading head 313. At this time, the amount of movement of the lens filler 366 is recorded in correspondence with the rotation angle of the base 310, and the shape of the template T is calculated by the CPU or the like. A circuit configuration and a calculation method for such a calculation are disclosed in JP-A-61-26773.
The one disclosed in Japanese Patent Publication No. 2 (Japanese Patent Application No. 60-287491) is adopted.

When measuring the shape of the lens of the rimless frame glasses, the lens holder 930 as shown in FIG. 13 is used, and the lens holder 930 is fitted to the suction cup holder 910, as described above. The same measurement as the template T is performed.

Next, the case of measuring the lens geometric center distance and the lens shape of the rimless frame will be described.

First, the unilateral lens L of the rimless frame F
Is removed, and the one-eye lens L is attached to the lens holder 930 fitted in the suction cup holder 910. On the other hand, the rimless frame F from which the single lens is removed is shown in FIGS.
Set as shown in 5.

The holder 901 is attached to the arm 21.
The lens shape is measured in the same manner as described above by mounting the lens filler 366a on the peripheral end of the lens L as shown in FIGS. 1a and 2a. From this measurement data, the width Ha of the single lens La can be known.

Next, the arms 211 and 212 are lifted and inclined obliquely upward and moved to the initial position, and the counter 800 (see FIG. 22) is reset. Then, the arms 211 and 212 are moved to the right and stopped at the central position. Center position is counter 800
Calculated from the count number of. On the other hand, the slider 350 is moved to the initial position by the constant torque spring 316, and the lens filler 366b and the peripheral end of the lens Lb are separated from each other as shown in FIG. 2C (each dimension is set in advance to this state). Has been).

In this state, the arms 211 and 212 are lowered and positioned in a horizontal state. And the arm 211,
The counter 800 measures the distance until the end of the lens La comes into contact with the lens filler 366b while moving 212 further to the right. The distance according to the count value of the counter 800 is H1.

By the way, the distance from the initial position of the arm 212 to the support member 980 is determined by the count number of the counter 800, and since the position of the rotating shaft 304 is fixed, it is at the initial position from the support member 980. The distance H2 to the contact surface of the lens filler 366b is known.

Therefore, the half width Hb of the rimless frame F can be obtained. That is, H1-H2 = Hb
Can be obtained with. From these data, the lens geometric center distance F
PD is calculated from the following equation.

FPD = 2 × (Hb-Ha / 2) FIG. 22 schematically shows the configuration of an arithmetic system for obtaining the lens geometric center distance FPD.

In FIG. 22, reference numeral 800 is an encoder 70.
It is a counter that counts the pulses output from 0.
Width measuring means for measuring the width of the. Reference numeral 801 denotes an arithmetic unit for obtaining the lens geometric center distance FPD and the lens shape. The calculation result of the calculation unit 801 is displayed on the display 802.

As described above, if the eye lens La and the rimless frame F are set in the lens holding device 900, the lens geometric center distance FPD of the rimless frame F can be obtained. And the rimless frame F is replaced, and the lens holding device 900 is set again.
It is not necessary to take it out from the armature 1,212 and mount it again on the arm 211,212. Therefore, the mounting operation becomes extremely simple.

[Second Embodiment] FIGS. 23 to 25 show an example in which the above-described configuration of the shape measuring instrument is not incorporated in the ball-slicing machine but the configuration of the measuring instrument alone.

In this embodiment, the configuration of the shape measuring instrument described above is housed in the case 940. And case 9
A circular opening 941 is formed on the upper surface of 40, and a circular cover 942 closes the circular opening 941. The circular cover 942 is fixed to the base 310 shown in FIG. 18 and is rotatably provided integrally with the base 310. The circular cover 942 has a first slit 943 extending in the radial direction from the center and a first slit 943.
A pair of second and third slits 944 and 945 that extend parallel to each other in the opposite direction are formed. The sensor shaft 352 is inserted through the first slit 943, the cylindrical shafts 360 and 361 are inserted through the second and third slits 944 and 945, and the bevel filler 356 and the lens filler 366 are located above the circular cover 942. Overhangs.

In this embodiment, instead of the arm 241 and the contact wheel 242 shown in FIG. 18, an arm 241 'and a contact plate 242' are attached to the hand 242, and the contact plate 24 is attached.
When 2 ′ is pressed, the micro switch 244 shown in FIG. 18 is turned on / off by the arm 241 ′. In addition, the sensor 24 such as the microswitch shown in FIG.
A detection lever 245a for turning ON / OFF 5 is attached. The tip of the detection lever 245a is located near the upper end of the base end of the hand 212, and when the lens holding device 900 is held between the hands 212 and 215 as shown in FIG. It is designed to be pressed by. And this detection lever 2
The sensor 245 of FIG. 18 is turned on by pressing 45a,
The lens holding device 900 is adapted to be detected.

Further, as shown in FIG. 25, the frame holding device 10
When 0 is held between the hands 212 and 215, the detection lever 245a is not pressed.

Also in this embodiment, the shape measurement is performed in the same manner as in the first embodiment.

[0067]

As described above, according to the present invention, the one-eye lens of rimless glasses and the rimless frame having the nose pad and the one-eye lens are held by the frame holding portion and the frame holding portion. Shape measuring section for measuring the shape of the lens, width measuring means for measuring a predetermined width of the rimless frame, the value measured by the shape measuring section, and the data measured by the width measuring means for the rimless glasses. Since the calculation unit for calculating the lens geometric center distance is provided, the operation for obtaining the lens geometric center distance of the rimless frame becomes easy.

[Brief description of drawings]

FIG. 1A is a perspective view of a main part of a lens shape measuring device according to the present invention. FIG. 7B is a perspective view illustrating a case of measuring a rimless frame.

FIG. 2A is an explanatory diagram showing a state in which a lens and a rimless frame are attached to a lens holding device and a lens shape is measured. b is an explanatory view showing a lens width. FIG. 7C is an explanatory diagram showing a state in which the lens and the rimless frame are attached to the lens holding device and the frame width is measured.

FIG. 3A is an explanatory diagram showing a relationship between a lens holding device and a shape measuring device when measuring a template. FIG. 3B is an explanatory diagram showing the relationship between the lens holding device and the shape measuring device when measuring the frame width.

FIG. 4A is a partial sectional view showing a mounting structure of a lens filler. B is a side view showing a lens filler.
C is a side view showing the tilt of the lens filler.

FIG. 5 is a perspective view of a lens holding device.

FIG. 6 is a rear view of FIG.

FIG. 7 is a perspective view showing a state in which a lens and a rimless frame are attached to the lens holding device.

8 is a partially enlarged perspective view of the lens holding device shown in FIG.

9 is a partially enlarged perspective view of the lens holding device shown in FIG.

FIG. 10 is an exploded perspective view showing a system between the suction cup holder and the lens holder shown in FIG.

FIG. 11 is a perspective view of the suction cup holder shown in FIG.

FIG. 12 is an exploded perspective view showing a relationship between a lens and a lens holder.

FIG. 13 is an exploded perspective view showing the relationship between the dummy lens and the lens holder.

FIG. 14 is an explanatory diagram showing a state where a lens of a rimless frame is attached to a lens holder.

FIG. 15 is a side view showing a state in which the lens of the rimless frame is attached to the lens holder.

FIG. 16 is an explanatory diagram showing a relationship between a lens and a lens filler.

FIG. 17 is an explanatory diagram showing a measurement state of a lens frame with a bevel filler.

FIG. 18 is a perspective view of a measuring device having the above configuration.

FIG. 19 is an explanatory diagram showing a measurement state with the bevel filler shown in FIG. 18.

20 is an enlarged explanatory view of a portion of the bevel filler shown in FIG. 18. FIG.

21 is an enlarged cross-sectional view of a portion of the constant torque spring shown in FIG.

FIG. 22 is a block diagram showing a schematic configuration of an arithmetic system.

FIG. 23 is a perspective view showing another embodiment.

FIG. 24 is a perspective view showing another embodiment.

FIG. 25 is a perspective view showing another embodiment.

[Explanation of symbols]

 300 measuring unit (shape measuring unit) 700 encoder 800 counter 801 arithmetic unit 900 lens holding device (frame holding unit) F rimless frame

Claims (1)

[Claims] 1. A frame holding part capable of respectively holding a one-eye lens of rimless glasses, a nose rest part and a rimless frame having a one-eye lens, and a shape for measuring a shape of a lens held by the frame holding part. A measuring unit, a width measuring unit that measures a predetermined width of the rimless frame, a value measured by the shape measuring unit, and a data measured by the width measuring unit to calculate a distance between lens geometric centers of the rimless glasses. A shape measuring apparatus for rimless glasses, comprising: