JP4470753B2 - Spectacle lens mounting position inspection instrument and spectacle lens mounting position inspection method - Google Patents

Description

  The present invention relates to an inspection instrument and an inspection method for inspecting whether or not an eyeglass lens is properly attached to an eyeglass lens holding unit used in an oval processing apparatus.

Conventionally, when an eyeglass lens is framed in an eyeglass frame, so-called edging is performed in which the peripheral edge of the eyeglass lens is ground in accordance with the frame shape of the eyeglass frame.
As a method of processing the target lens according to the frame shape, a pair of shaft members holds a circular spectacle lens that is fixed to the spectacle lens holder and before the target lens processing, and rotates these shaft members to rotate the spectacle lens. In addition, a method is used in which a plurality of grindstones are arranged around the spectacle lens, and the grindstone is in contact with the rotating spectacle lens while rotating (see, for example, Patent Document 1).

Before processing the target lens shape in the target lens shape processing apparatus, it is necessary to fix the spectacle lens holding portion to the spectacle lens, and the fixing between the spectacle lens and the spectacle lens holding portion is performed by an operation called blocking. The spectacle lens and the spectacle lens holding part are fixed to each other via an adhesive tape.
Blocking works differently depending on the type of optical design of the spectacle lens.For example, in the case of a single-focus lens, the optical center and astigmatism are matched to the customer's spectacle prescription using a measuring device called an optical meter. After determining the axial direction and marking the spectacle lens as a mark, align the spectacle lens and the spectacle lens holder so that the spectacle lens and the spectacle lens holding part are in a predetermined positional relationship with a device called an axising device based on the mark point. It is fixed to the spectacle lens holding part (see Patent Document 2).
In the case of a progressive multifocal lens, a spectacle lens and a spectacle lens are used in an axis alignment device based on a layout print (corresponding to an alignment mark serving as a processing reference) printed in advance at the time of shipment from a spectacle lens manufacturer. Positioning is performed so that the holding portion has a predetermined positional relationship, and the holding portion is fixed to the spectacle lens holding portion (see Patent Document 2).

  The eyeglass lens processed by the target lens processing device is then subjected to additional processing according to the customer's order, and after passing through processes such as cleaning, whether or not it will fit in the eyeglass frame ordered by the customer. Perform an inspection. In this inspection, a spectacle lens is placed in a predetermined state on a paper surface called a confirmation diagram with reference to a mark or a mark, and whether or not the peripheral shape deviates from the planned shape. is there.

JP-A-9-253999 (5th to 7th pages, FIG. 1) Japanese Patent Laying-Open No. 2004-287208 (paragraph number “0004”)

In order to inspect whether or not the spectacle lens processed by the target lens processing apparatus is correctly fitted in the spectacle frame, conventionally, the spectacle lens after processing is only targeted. For this reason, conventionally, after the blocking, the fixing state between the spectacle lens and the spectacle lens holding portion is not confirmed, so the error of the fixing position when blocking is understood until the final inspection is performed after the processing is completed. Therefore, there is a problem that it is impossible to prevent the generation of defective products.
For this reason, there is a need for a technique that can confirm the attachment position of the spectacle lens holding portion and the spectacle lens by a simple method immediately after blocking.

  An object of the present invention is to provide a spectacle lens mounting position inspection instrument and spectacle lens that can prevent the occurrence of defective products by confirming the mounting position of the spectacle lens holding portion and the spectacle lens by a simple method immediately after blocking (before processing). It is to provide a mounting position inspection method.

  The spectacle lens mounting position inspection instrument of the present invention is a spectacle lens mounting that inspects the mounting position of the spectacle lens to the spectacle lens holding portion in a lens shape processing apparatus that grinds the peripheral portion of the spectacle lens held by the spectacle lens holding portion. A position inspection device, in which a reference mark for checking with a reference mark of a lens provided in advance on the spectacle lens is formed on the main body of the device on which the spectacle lens holding portion with the spectacle lens attached is mounted It is characterized by.

  The spectacle lens mounting position inspection method of the present invention is a spectacle lens mounting method for inspecting the mounting position of the spectacle lens to the spectacle lens holding portion in a lens shape processing apparatus for grinding a peripheral portion of the spectacle lens held by the spectacle lens holding portion. In the position inspection method, the spectacle lens holding portion with the spectacle lens attached is attached to an instrument body, and a reference mark formed on the instrument body is used as a reference mark of a lens provided in advance on the spectacle lens. It is characterized by collating.

According to this invention, first, the spectacle lens is attached to the spectacle lens holding portion by blocking. Immediately after the blocking, in order to inspect the attachment position of the spectacle lens to the spectacle lens holding portion, the spectacle lens holding portion to which the spectacle lens is attached is attached to a predetermined position of the instrument body. In this state, an operator collates a collation mark formed on the instrument main body with a reference mark provided in advance on the spectacle lens, for example, a preprinted layout print. As a result of the collation, if the reference mark and the collation mark substantially match, the spectacle lens is correctly attached to the spectacle lens holding part. If the reference mark and the collation mark do not match, the spectacle lens is not spectacles. It is attached to the lens holding part by mistake.
The spectacle lens correctly attached to the spectacle lens holding part is processed into a target lens shape by the target lens processing apparatus, but if the spectacle lens is mistakenly attached to the spectacle lens holding part, the spectacle lens is held from the spectacle lens by an appropriate means. Remove the part and perform blocking again.
Therefore, according to the present invention, the fixing error between the spectacle lens and the spectacle lens holding portion is reduced by a simple method of attaching the spectacle lens holding portion to the instrument main body and collating the reference mark of the instrument main body with the reference mark of the spectacle lens. Since the eyeglass lens that has found a sticking error is not processed into a target lens shape, it is possible to prevent the occurrence of defective products.

In the invention relating to the spectacle lens mounting position inspection instrument, the instrument main body is formed with an opening for guiding the spectacle lens holding part, and a facing surface facing the reference mark of the spectacle lens, respectively. A configuration in which the reference mark is formed is preferable.
In this invention, the eyeglass lens holding part is guided to the opening, and the reference mark formed on the instrument body is recognized through the eyeglass lens in a state where the eyeglass lens is opposed to the instrument body. Therefore, the collation mark can be reliably collated with the reference mark directly formed on the spectacle lens, so that the position where the spectacle lens is fixed to the spectacle lens holding portion can be accurately confirmed.

It is preferable that the opening is circular, and the portion of the spectacle lens holding portion guided by the opening is substantially cylindrical.
In this invention, the spectacle lens holding part to which the spectacle lens is attached is inserted into the opening, and the angle of the spectacle lens holding part with respect to the opening is defined, whereby the spectacle lens holding part to which the spectacle lens is attached is It will be mounted at a predetermined position.
Therefore, it is not necessary to position the spectacle lens in two directions orthogonal to each other in the virtual plane with respect to the instrument body when the spectacle lens holding part is mounted at a predetermined position on the instrument body. Become.

The reference mark includes a center point formed at the optical axis position of the spectacle lens and a reference straight line formed extending in the radial direction around the center point, and the reference mark corresponds to the reference straight line. A configuration that is a straight line is preferred.
According to the present invention, it is possible to easily perform a collation operation between the collation mark and the reference mark of the spectacle lens by checking whether or not the straight lines match each other.

Preferably, the verification straight line is formed of a plurality of parallel lines.
In the present invention, even when the spectacle lens holding portion is attached to a position decentered from the optical axis of the spectacle lens and the eccentric processing is performed, the collation operation between the collation mark and the spectacle lens reference mark can be easily performed.

The instrument body preferably includes a locking portion that prevents relative movement with the spectacle lens holding portion.
In this invention, since the instrument main body and the spectacle lens holding part are not shifted from each other by locking the instrument main body and the spectacle lens holding part with the locking part, the collating operation can be performed accurately.

The locking portion includes a main body groove formed corresponding to a holding portion groove portion formed in advance in the spectacle lens holding portion, and a key that simultaneously fits the main body groove and the holding portion groove. The structure provided with is preferable.
In this invention, the fixing operation | work with an instrument main body and a spectacle lens holding | maintenance part can be easily performed by penetrating and fitting a key to the groove part for holding | maintenance parts, and the groove | channel for main bodies. This is because, in the process of manufacturing the inspection instrument, it is easier to manufacture and fit them individually than to manufacture them integrally, and the processing accuracy can be improved.
Note that the processing jig of the inspection instrument is usually made of resin, and if the inspection instrument is made of a material that is too hard, the wear of the resin becomes severe. Therefore, a soft material such as brass is used for the key, but the brass side may also be worn and is preferably removable.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the configuration of the target lens shape processing apparatus will be described with reference to FIG.
[1. Configuration of target processing apparatus]
FIG. 1 shows a target lens shape processing apparatus 1.
The target lens processing apparatus 1 processes a target lens lens L having a substantially circular shape before processing the target lens shape in accordance with the frame shape to obtain a spectacle lens L corresponding to the frame shape.
Here, the spectacle lens L before processing the target lens shape is a spectacle lens whose surface has been subjected to super-water-repellent processing.
The target lens processing apparatus 1 includes a manufacturing apparatus body 2 and a casing (not shown) that covers the manufacturing apparatus body 2.
The manufacturing apparatus main body 2 includes a main base 21, a sub base 22 installed on the main base 21, an eyeglass lens driving device 23, an eyeglass lens processing device 24, an eyeglass lens driving device 23, and an eyeglass lens processing device 24. A control device (not shown) for controlling.
The main base 21 is a flat plate base, and a sub base 22 is installed on the main base 21. The sub base 22 is a substantially inverted T-shaped side surface, and includes a base portion 221 installed on the main base 21 and a wall portion 222 provided on the base portion 221.
The wall portion 222 has a substantially rectangular shape in front and is arranged so that the long side is along the X axis.

The spectacle lens driving device 23 is configured to rotate the spectacle lens L with the spectacle lens L interposed therebetween.
The spectacle lens driving device 23 includes an upper chuck portion 231 and a lower chuck portion 232 that face each other with the spectacle lens L interposed therebetween.
The upper chuck portion 231 includes a pressing cylinder 231A. The holding cylinder 231A is, for example, a pneumatic cylinder, and includes a cylindrical cylinder body 231B and a shaft member 231C.
The cylinder main body 231B is attached to the wall portion 222 of the sub base 22 via a holder 231D. Although not shown, a bearing is provided inside the holder 231D, and the holding cylinder 231A is rotatably held. The holder 231 </ b> D is fixed to a substantially central portion of the front surface of the wall portion 222.

The shaft member 231C extends along the thickness direction of the spectacle lens L, and moves up and down (moves along the Z-axis direction) in the cylinder body 231B. The shaft member 231C abuts on the surface of the spectacle lens L and sandwiches the spectacle lens L together with another shaft member 232D described later. For example, a rubber lens retainer 231C1 is attached to the tip of the shaft member 231C.
In such a holding cylinder 231A, the air pressure inside the cylinder body 231B is adjusted by sliding a shaft member 231C by controlling a solenoid valve (not shown).

The lower chuck portion 232 includes a turntable 232A installed on the base 221 of the sub-base 22 and a cylinder 232B installed on the turntable 232A.
The turntable 232A is configured to rotationally drive a cylinder 232B installed on the turntable 232A, and includes a planar circular turntable body 232A1 and a rotation shaft 232A2 extending downward from the turntable body 232A1. .
A recess is cut in the back surface of the main base 21 according to the installation position of the turntable 232A.

The rotating shaft 232A2 penetrates the surface of the main base 21 and reaches the recess. A gear meshing with the rotation shaft 232A2 is disposed in the recess, and this gear meshes with the rotation shaft of the motor 232E.
That is, the turntable 232A is rotationally driven by the drive of the motor 232E. Thereby, the cylinder 232B on the turntable 232A is rotationally driven, and the spectacle lens L is also rotationally driven.
Furthermore, a means for recognizing the rotation speed and rotation angle of the turntable 232A is provided inside the recess. For example, an encoder including a photosensor and a light shielding plate can be exemplified.

The cylinder 232B has substantially the same structure as the holding cylinder 231A, and includes a cylinder body 232C and a shaft member 232D that slides inside the cylinder body 232C.
The shaft member 232D extends along the thickness direction of the spectacle lens L, and supports the surface of the spectacle lens L from below. The shaft member 232D is disposed to face the shaft member 231C described above, and the spectacle lens L is sandwiched from the front and back surfaces by the shaft member 232D and the shaft member 231C.
The shaft member 232D includes a shaft member main body 232D1 that slides inside the cylinder main body 232C, a mounting portion 232D2 attached to the tip of the shaft member main body 232D1, and a spectacle lens holding portion 232D3 attached to the mounting portion 232D2.
The spectacle lens holding part 232D3 can be detached from the mounting part 232D2, and is made of a material such as rubber, for example.
The structure of the main part of the mounting portion 232D2 is shown in FIG. In FIG. 3, the mounting portion 232D2 includes a columnar base end portion 232D21 and a distal end portion 232D22 in which a fitting hole 232D20 into which the spectacle lens holding portion 232D3 is fitted is formed.

Specific configurations of the spectacle lens L and the spectacle lens holding portion 232D3 are shown in FIGS.
4A and 4B show the spectacle lens L attached to the spectacle lens holding portion 232D3. FIG. 4A is a front view and FIG. 4B is a rear view.
In FIG. 4, the spectacle lens L includes a center point C indicating the center of the spectacle lens (for example, the geometric center of the spectacle lens), and a reference straight line SL formed extending in the lens radial direction around the center point C. In the middle of the reference straight line SL, a symbol P displayed as “S” as viewed from the rear surface of the lens (displayed by inverting “S” when viewed from the front of the lens) is printed in advance. The symbols P are arranged at equal intervals with respect to the center point C.
The center point C, the reference straight line SL, and the symbol P constitute a reference mark M of the spectacle lens L. Usually, the spectacle lens holding part 232D3 is fixed to the center point C. When the spectacle lens holding part 232D3 is attached to the surface of the spectacle lens L, the adhesive tape T is attached to the surface of the spectacle lens holding part 232D3, and the spectacle lens L is fixed via the adhesive tape T.

FIGS. 5A and 5B show the configuration of the spectacle lens holding portion 232D3. FIG. 5A is a rear view, FIG. 5B is a right side view, and FIG. 5C is a plan view.
In FIG. 5, the spectacle lens holding portion 232D3 includes a lens-side holding portion main body 232D31, and a locking portion 232D32 that is integrally formed with the holding portion main body 232D31 and is fitted into the fitting hole 232D20. .
By fitting the spectacle lens holding portion 232D3 to which the spectacle lens L is fixed to the mounting portion 232D2, the spectacle lens L is mounted on the shaft member main body 232D1.
The eyeglass lens mounting portion 232D2 is formed with a detent to prevent the holding portion 232D3 from rotating with respect to the mounting portion 232D2. Specifically, a holding portion groove 232D30 is formed in a linear shape in the locking portion 232D32 of the spectacle lens holding portion 232D3, and an unillustrated axis key is formed in the mounting portion 232D2. By fitting the holding portion groove portion 232D30 and the axis key, the spectacle lens holding portion 232D3 is prevented from rotating with respect to the mounting portion 232D2.

Returning to FIG. 1, the spectacle lens processing device 24 grinds the spectacle lens L, and includes a grinding unit 241 and a pair of moving units (grinding wheel moving units) 242 that move the grinding unit 241.
The grinding unit 241 includes a pair of grindstones 241A, a grindstone shaft 241B connected to each grindstone 241A, a grindstone shaft rotation drive unit 241C that rotationally drives the grindstone shaft 241B, and a base body 241D.
The grindstone 241A includes a plurality of (for example, three) grindstone main bodies 241A1 to 241A3 having a cylindrical shape, and the grindstone main bodies 241A1 to 241A3 are superposed along the Z-axis direction.
Of the grindstone main bodies 241A1 to 241A3, the grindstone main body 241A1 disposed at the lowermost part is used when the spectacle lens L is roughly processed.

The grindstone main body 241A2 installed on the grindstone main body 241A1 is used when finishing the spectacle lens L. The grindstone main body 241A2 is, for example, a diamond sintered body. The grindstone main body 241A2 is a finer mesh than the grindstone main body 241A1.
The grindstone main body 241A3 is installed on the grindstone main body 241A2, and is used when the outer peripheral end surface of the spectacle lens L is mirror-finished.
The lower end of the grindstone shaft 241B is connected to the circular upper surface of the grindstone 241A, and holds the grindstone 241A. The upper end of the grindstone shaft 241B is fixed to a pulley (not shown) installed on the upper surface of the base 241D.
A grindstone shaft rotation driving unit 241C is installed on the upper surface of the base 241D.

The grindstone shaft rotation drive unit 241C includes a motor 241C1 that rotationally drives the grindstone shaft 241B, a pulley (not shown) attached to the rotation shaft of the motor 241C1, and a pulley (not shown) fixed to the upper end of the grindstone shaft 241B. And a belt 241C2 wound around the pair of pulleys.
When the motor 241C1 is driven, the pulley attached to the rotation shaft of the motor 241C1 rotates. The belt 241C2 is driven by this rotation, and the pulley fixed to the upper end of the grindstone shaft 241B rotates. Thereby, the grindstone shaft 241B rotates.
The pair of moving units (grinding wheel moving units) 242 moves each grinding unit 241, and moves the pair of grinding wheels 241 </ b> A of the grinding unit 241 closer to the spectacle lens L fixed to the spectacle lens driving device 23. They are separated.
The pair of moving units 242 are disposed to face each other with the spectacle lens driving device 23 interposed therebetween.

[2. Configuration of eyeglass lens mounting position inspection instrument]
Next, the spectacle lens mounting position inspection instrument 3 according to the present embodiment will be described with reference to FIGS. Hereinafter, the spectacle lens mounting position inspection instrument 3 will be abbreviated as the inspection instrument 3.
6 is an exploded perspective view showing the front side of the eyeglass lens holding portion 232D3 to which the eyeglass lens L is attached to the inspection instrument 3, and FIG. 7 is an exploded perspective view showing the back side thereof. FIG. 8A is a front view of the inspection instrument 3, and FIG. 8B is a left side view thereof. FIG. 9A is a plan view of the inspection instrument 3, and FIG. 9B is a rear view thereof.

In these drawings, the inspection instrument 3 has a reference to the instrument body 30 to which the spectacle lens holding part 232D3 with the spectacle lens L attached is attached in order to inspect the attachment position of the spectacle lens L to the spectacle lens holding part 232D3. A verification mark 3M for verification with the mark M is formed.
The instrument body 30 is formed of aluminum die casting, and includes a cylindrical portion 31 in which a circular opening 31A for guiding the spectacle lens holding portion 232D3 is formed, and spectacle lenses L that are formed integrally with the cylindrical portion 31. In this structure, a disk portion 32 having a facing surface 32 </ b> A facing the side surface of the lens holding portion and a body groove 33 formed in the cylindrical portion 31 are provided.
When the spectacle lens holding part 232D3 with the spectacle lens L attached to the instrument body 30 is mounted, the end face of the cylindrical part 31 and the end face of the spectacle lens holding part 232D3 substantially coincide.

The surface of the cylindrical portion 31 on the side of the spectacle lens L is a substantially flat surface, and a step is formed between the substantially flat surface and the plane of the disc portion 32 on the side of the spectacle lens, and a tapered surface 31T is formed on the step. ing.
The disc portion 32 has substantially the same diameter as the spectacle lens L, and the peripheral portion of the disc portion 32 that faces each other is defined as a linear defect portion 32B.
A check mark 3M is formed from the inner peripheral edge to the outer peripheral edge of the disc portion 32 on the facing surface 32A of the disc portion 32 facing the spectacle lens L. The matching mark 3M is a matching straight line corresponding to the reference straight line SL and parallel to the missing portion 32B, and is formed from a plurality of parallel lines.
One of the plurality of verification marks 3M is formed so as to pass through the axis of the opening 31A, and the remaining verification marks 3M are parallel to the single verification mark 3M and are missing at equal intervals. It is arranged toward the part 32B.
The verification mark 3M is formed in a different color from the disc portion 32 by appropriate means such as printing and engraving.

The main body groove 33 is formed so as to pass through the axis of the opening 31A and to be parallel to the verification mark 3M and the missing portion 32B. The main body groove 33 is formed corresponding to the holding portion groove portion 232D30 formed in the spectacle lens holding portion 232D3 in advance, and the spectacle lens holding portion 232D3 in a state where the spectacle lens L is attached to the instrument main body 30 is formed. In the mounted state, the key 41 is simultaneously fitted into the main body groove 33 and the holding portion groove 232D30 (see FIG. 7).
Here, a locking portion 4 that includes the main body groove 33 and the key 41 and prevents relative movement between the instrument main body 30 and the spectacle lens holding portion 232D3 is configured.

[3. Eyeglass lens mounting position inspection method]
The spectacle lens mounting position inspection method of this embodiment will be described.
First, the spectacle lens L is attached to the spectacle lens holding part 232D3 by blocking. Immediately after the blocking, the attachment position of the spectacle lens L to the spectacle lens holding portion 232D3 is inspected by the inspection instrument 3.
Therefore, the spectacle lens holding part 232D3 to which the spectacle lens L is attached is inserted into the opening 31A of the instrument main body 30, and the back surface of the spectacle lens L is pressed against the disc part 32 of the instrument main body 30. Further, the spectacle lens L is rotated with respect to the instrument main body 30, and the main body groove 33 provided in the instrument main body 30 and the holding portion groove portion 232D30 formed in advance in the spectacle lens holding portion 232D3 are substantially in a straight line. In this state, the key 41 is fitted into these grooves.

In this state, the operator collates the collation mark 3M formed on the instrument body 30 with the reference mark M provided in advance on the spectacle lens L through the spectacle lens L. In this collation operation, the reference straight line SL constituting the reference mark M coincides with the straight line of the collation mark 3M, and the two symbols P constituting the reference mark M are respectively in contact with the inner edge of the collation mark 3M. This is done by determining whether they are in the same position.
As a result of the collation, if the reference mark M and the collation mark 3M substantially match, the spectacle lens L is correctly attached to the spectacle lens holding portion 232D3, and the spectacle lens holding portion 232D3 to which the spectacle lens L is attached is It is attached to the lower chuck portion 232 of the spectacle lens driving device 23. The eyeglass lens L is processed into a target lens shape by the target lens processing apparatus 1.
On the other hand, if the reference mark M and the matching mark 3M do not match, the spectacle lens L is erroneously attached to the spectacle lens holding portion 232D3. If the spectacle lens L is erroneously attached to the spectacle lens holding portion 232D3, the spectacle lens holding portion 232D3 is removed from the spectacle lens L by an appropriate means, and blocking is performed again.

[4. Effects of the embodiment]
Therefore, in this embodiment, the following effects can be achieved.
(4-1) A verification mark 3M for verification with a reference mark M of a lens provided in advance on the spectacle lens L is formed on the instrument body 30 to which the spectacle lens holding portion 232D3 with the spectacle lens L attached is mounted. Thus, the spectacle lens L and the spectacle lens can be obtained by a simple method in which the operator collates the reference mark M of the spectacle lens L and the reference mark M of the spectacle lens L after the spectacle lens holding portion 232D3 is mounted on the instrument main body 30. A sticking error with the holding portion 232D3 can be found. Therefore, the eyeglass lens L that has found a sticking error is not processed by the target lens shape processing apparatus 1, thereby preventing the occurrence of defective products.

(4-2) An opening 31A for guiding the spectacle lens holding portion 232D3 and a facing surface 32A facing the side surface of the spectacle lens holding portion of the spectacle lens L are formed on the instrument body 30, and a reference mark is formed on the facing surface 32A. 3M is formed, the eyeglass lens holding part is guided to the opening 31A, and the verification mark 3M is recognized through the eyeglass lens in a state where the eyeglass lens L faces the instrument body 30. Therefore, since the collation can be performed in a state where the collation mark 3M and the reference mark M formed directly on the spectacle lens L are overlapped, the collation can be surely transmitted through the spectacle lens L. It is possible to accurately confirm the position of fixing to the spectacle lens holding unit 232D3.

(4-3) Since the opening 31A is circular and the portion guided to the opening 31A of the spectacle lens holding portion 232D3 has a substantially cylindrical shape, the spectacle lens holding portion 232D3 to which the spectacle lens L is attached is opened. The spectacle lens holding portion 232D3 to which the spectacle lens L is attached can be easily attached to a predetermined position of the instrument main body 30 by inserting it into 31A and defining the angle of the spectacle lens holding portion 232D3 with respect to the opening 31A.

(4-4) The reference mark M includes a center point C formed at the optical axis position of the spectacle lens L, and a reference straight line SL formed extending in the radial direction around the center point C. Since the matching line corresponding to SL is the matching mark 3M, the matching work between the matching mark 3M and the reference mark M can be easily performed by visually observing whether these straight lines match each other.

(4-5) Since the verification straight line that is the verification mark 3M is composed of a plurality of parallel lines, when the spectacle lens holding portion 232D3 is attached at a position decentered from the optical axis of the spectacle lens L, the decentering process is performed. Even in such a collation operation, it is only necessary to visually check whether any one of the plurality of collation marks 3M is coincident with the reference straight line SL. Therefore, the collation mark 3M and the reference mark M of the spectacle lens L can be seen. Can be easily verified.

(4-6) Since the instrument body 30 includes the locking part 4 that prevents relative movement between the instrument body 30 and the spectacle lens holding part 232D3, the instrument body 30 and the spectacle lens holding part 232D3 are locked by the locking part 4. Thereby, since the shift | offset | difference between the instrument main body 30 and spectacle lens holding | maintenance part 232D3 can be prevented at the time of collation work, collation work can be performed correctly.

(4-7) The locking portion 4 includes a main body groove 33 formed corresponding to the holding portion groove portion 232D30 formed in the spectacle lens holding portion 232D3, and the main body groove 33 and the holding portion groove portion 232D30. Since the key 41 is fitted through the holding portion groove portion 232D30 and the main body groove 33, the fixture body 30 and the spectacle lens holding portion 232D3 can be fixed. Further, the key 41 is detached from the holding portion groove portion 232D30 and the main body groove 33 so that the key 41 can be easily removed and replaced when worn.
(4-8) The holding portion groove portion 232D30 is formed in advance in the spectacle lens holding portion 232D3 in order to attach the spectacle lens holding portion 232D3 to the spectacle lens driving device 23. As a result, the structure of the locking portion 4 can be simplified.

(4-9) Since the instrument main body 30 is formed of aluminum die casting, the instrument main body 30 can be easily manufactured by a die-cast method that is inexpensive and can be mass-produced.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above embodiment, the instrument main body 30 is formed from aluminum die casting. However, in the present invention, the instrument main body 30 is made of a metal other than aluminum, for example, steel such as iron and stainless steel, synthetic resin, glass, wood, and the like. It may be formed from a material.
Furthermore, in this invention, the instrument main body 30 is not limited to what is formed from a non-transparent material, You may form from a transparent material. According to this, the verification mark 3M formed on the instrument main body 30 and the reference mark M directly formed on the eyeglass lens L can be transmitted through the instrument main body 30 for verification.
In addition, the eyeglass lens that is the target of lens processing according to the present invention can be applied to target lens processing of any spectacle lens such as a single-focus lens as well as a progressive multifocal lens.

  In the present invention, the verification mark 3M may be formed from a single verification straight line. Furthermore, the verification mark 3M may be configured to include one or a plurality of verification straight lines and a straight line that is orthogonal to the verification straight lines and passes through the axis of the opening 31A. At this time, a scale may be formed at a predetermined position on these straight lines.

  The present invention can be used for lens processing of spectacle lenses.

The perspective view which shows a target lens shape processing apparatus. The front view which shows the state with which the spectacles lens was mounted | worn in the target lens shape processing apparatus. The structure of the principal part of a mounting part is shown, (A) is a top view, (B) is a right view, (C) is a front view. The spectacle lens attached to the spectacle lens holding | maintenance part is shown, (A) is a front view, (B) is a rear view. The structure of a spectacle lens holding | maintenance part is shown, (A) is a rear view, (B) is a right view, (C) is a top view. The disassembled perspective view which shows the front side of the state which mounts the spectacle lens holding part to which the spectacle lens was attached to a test | inspection instrument. The disassembled perspective view which shows the back side of FIG. (A) is a front view of an inspection instrument, and (B) is a left side view thereof. (A) is a top view of an inspection instrument, (B) is the rear view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lens processing apparatus, 23 ... Eyeglass lens drive device, 232D3 ... Eyeglass lens holding part, 232D30 ... Groove part for holding part, 24 ... Eyeglass lens processing apparatus, 3 ... Eyeglass lens mounting position test | inspection instrument, 30 ... Instrument main body, 31A ... Opening part, 32 ... disc part, 32A ... opposite surface, 33 ... groove for main body, 4 ... locking part, 41 ... key, L ... glass lens, M ... reference mark, 3M ... reference mark, C ... center , SL ... Reference straight line

Claims (8)

In a lens shape processing apparatus for grinding a peripheral portion of a spectacle lens held by a spectacle lens holding unit, a spectacle lens mounting position inspection instrument for inspecting a mounting position of the spectacle lens to the spectacle lens holding unit,
A spectacle mark mounting for collating with a reference mark of a lens provided in advance on the spectacle lens is formed on a body of the instrument on which the spectacle lens holding portion with the spectacle lens is mounted is mounted. Position checking instrument. In the spectacle lens mounting position inspection instrument according to claim 1,
An opening for guiding the spectacle lens holding portion and a facing surface facing the reference mark of the spectacle lens are formed in the instrument body, and the reference mark is formed on the facing surface. Eyeglass lens mounting position inspection instrument. In the spectacle lens mounting position inspection instrument according to claim 2,
The eyeglass lens mounting position inspection instrument, wherein the opening is circular, and a portion of the eyeglass lens holding portion guided by the opening is substantially cylindrical. In the spectacle lens mounting position inspection instrument according to claim 3,
The reference mark includes a center point formed at the optical axis position of the spectacle lens and a reference straight line formed extending in the radial direction around the center point, and the reference mark corresponds to the reference straight line. Eyeglass lens mounting position inspection instrument characterized by being a straight line for use. In the spectacle lens mounting position inspection instrument according to claim 4,
The eyeglass lens mounting position inspection instrument, wherein the reference straight lines are formed of a plurality of parallel lines. In the spectacle lens mounting position inspection instrument according to any one of claims 1 to 5,
The spectacle lens mounting position inspection instrument, wherein the instrument main body includes a locking portion that prevents relative movement between the instrument main body and the spectacle lens holding portion. In the spectacle lens mounting position inspection instrument according to claim 6,
The locking portion includes a main body groove formed corresponding to a holding portion groove portion formed in advance in the spectacle lens holding portion, and a key that simultaneously fits the main body groove and the holding portion groove. A spectacle lens mounting position inspection instrument comprising: In a lens shape processing apparatus for grinding a peripheral portion of a spectacle lens held by a spectacle lens holding unit, a spectacle lens mounting position inspection method for inspecting a mounting position of the spectacle lens to the spectacle lens holding unit,
The spectacle lens holding portion with the spectacle lens attached is mounted on an instrument body, and a collation mark formed on the instrument body is collated with a reference mark of a lens provided in advance on the spectacle lens. Eyeglass lens mounting position inspection method.

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