JP2012203194A - Positioning device and processing device for spectacle lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a positioning device for a spectacle lens, which is capable of easily positioning a spectacle lens with high refractive power relative to a lens carrying jig.SOLUTION: The positioning device for a spectacle lens includes: a light source; a light-transmissive member 61 provided with a reference mark S; a monitor 63 which is irradiated by the light source and includes a light receiving part 63A which receives detection light P transmitted through the light-transmissive member 61 and a progressive multifocal lens L; and a prism 8 which is disposed between the monitor 63 and the progressive multifocal lens L and changes an optical path of the detection light P transmitted through the progressive multifocal lens L, toward the light receiving part 63A of the monitor 63. In the case that the progressive multifocal lens L has high refractive power, the optical path of the detection light P transmitted through the progressive multifocal lens L is changed toward the monitor 63 because the prism 8 is disposed as an optical path changing member between the light receiving part 63A of the monitor 63 and the progressive multifocal lens L, so that the detection light P surely enters in the light receiving part 63A of the monitor 63.

Description

  The present invention relates to a spectacle lens positioning device that positions a spectacle lens with respect to a lens conveying jig when processing the spectacle lens, and a processing device that processes the spectacle lens positioned by the positioning device.

  In a spectacle store, in order to incorporate a spectacle lens into a spectacle frame desired by a customer, a frame processing is performed in which the outer shape of the spectacle lens is cut in accordance with the shape of the frame. In this work, when the customer wears spectacles, it is necessary to position and process the spectacle lens fitting point and the pupil center of the eye to coincide with each other. You must also identify the left and right sides and the vertical direction.

  Advanced techniques are required for workers engaged in framing. In particular, in the frame work of progressive multifocal lenses, it is not easy to measure the frequency, and it is difficult to ensure the frame placement accuracy. Therefore, the spectacles delivered to the eyeglass shop so that the worker can work easily and accurately. On the lens surface, a layout pattern that is a guide for work is marked in advance.

This layout pattern includes, for example, a horizontal reference line that indicates the horizontal direction of the progressive multifocal lens, a distance power measurement position that indicates a position at which the power of the distance portion is measured, and a near purpose that indicates a position at which the power of the near portion is measured. It is composed of frequency measurement positions, fitting points, layout symbols such as left and right identification symbols, etc., and is marked with ink that contains a pigment, epoxy resin, organic solvent, etc. and can be erased with alcohol or the like.
Before printing such a layout pattern, it is necessary to detect hidden marks that have been transferred from the mold to the progressive multifocal lens in advance, determine the reference position for the fitting point, etc., and position the progressive multifocal lens. There is.

For this reason, a spectacle lens processing apparatus is known that includes a printing apparatus that performs printing on a spectacle lens provided with a hidden mark in advance. This processing apparatus includes a lens conveying jig that conveys a spectacle lens provided with a hidden mark in advance, a positioning device that positions the spectacle lens on the lens conveying jig, and printing on the spectacle lens positioned by the positioning apparatus. There is a conventional example provided with a printing apparatus that performs (Patent Document 1).
In the conventional example shown in Patent Document 1, the eyeglass lens positioning device is a laser device that is directed toward a progressive multifocal lens through a glass plate provided with alignment marks corresponding to the positions of hidden marks of the progressive multifocal lens. The progressive multifocal lens is moved up, down, left and right so that the position of the hidden mark coincides with the position of the positioning mark while projecting the transmitted light onto the ground glass while viewing the projected image on the monitor. Further, the position is adjusted by rotating it further.

JP 2004-45873 A

In the conventional example shown in Patent Document 1, when a spectacle lens having a high refractive power is positioned, the laser light emitted from the laser device is largely refracted by the spectacle lens, and the laser light transmitted from the spectacle lens is received by the monitor. There is an inconvenience that the light does not enter the part.
In order to avoid this inconvenience, the light receiving part of the monitor may be enlarged or the monitor itself may be movable. However, this increases the cost.

  An object of the present invention is to provide a spectacle lens positioning device and a processing device capable of easily positioning a spectacle lens having a high refractive power with respect to a lens conveying jig.

The spectacle lens positioning device of the present invention is a spectacle lens positioning device that positions a spectacle lens provided with a hidden mark in advance on a lens transport jig, and includes a light source, a translucent member provided with a reference mark, A monitor having a light receiving portion for receiving detection light that is emitted from the light source and passes through the translucent member and the spectacle lens, and is disposed between the monitor and the spectacle lens and transmits the spectacle lens And an optical path changing member that changes the optical path of the detection light to be directed toward the monitor.
In the present invention having this configuration, the detection light emitted from the light source passes through the translucent member, is refracted by the spectacle lens, and enters the light receiving portion of the monitor. On the monitor, the reference mark provided in advance on the translucent member and the hidden mark provided in advance on the spectacle lens are projected, and the spectacle lens is moved so that the hidden mark matches the reference mark. In this state, the spectacle lens is fixed to the lens transport jig.
Here, when the spectacle lens has a high refractive power, the detection light irradiated from the light source may be emitted from the monitor side surface after being largely refracted by the spectacle lens, and may not be able to enter from the light receiving portion of the monitor. However, in the present invention, since the optical path changing member is disposed between the monitor and the spectacle lens, the optical path of the detection light transmitted through the spectacle lens is changed by the optical path changing member toward the monitor, so that the monitor is surely provided. Is incident on the light receiving part. On the other hand, when the refractive power of the spectacle lens is not high, the spectacle lens is positioned by the same method as before without using the optical path changing member.
Therefore, in the present invention, the spectacle lens having a high refractive power can be accurately positioned with respect to the lens conveying jig by a simple method of arranging the optical path changing member between the spectacle lens and the monitor.

The optical path changing member is preferably an optical component having a prism refractive power in a base direction opposite to the base direction of the prism refractive power of the spectacle lens.
In the present invention having this configuration, the prism refractive power of the spectacle lens and the prism refractive power of the optical component are canceled out, so that the detection light emitted from the optical component is parallel to the detection light incident on the spectacle lens, and the spectacle lens Regardless of the distance between the monitor and the monitor.

The optical component is preferably a prism.
In the present invention having this configuration, the cost of the apparatus can be reduced by using a simple structure for the optical component.

The optical component is preferably a meniscus lens.
In the present invention having this configuration, the cost of the apparatus can be reduced by using a simple structure for the optical component.

Preferably, the optical path changing member is a mirror member that reflects detection light transmitted through the spectacle lens toward the monitor.
In the present invention having this configuration, the cost of the apparatus can be reduced by making the optical path changing member a simple structure called a mirror member.

The optical path changing member is preferably provided on a holder.
In the present invention having this configuration, the optical path changing member can be easily installed via the holder by providing the optical path changing member in the holder.

It is preferable that the holder is detachably attached to the monitor side surface of the spectacle lens.
In the present invention having this configuration, the holder is formed of a sucker such as rubber, and the holder on which the optical path changing member is mounted is mounted on the monitor side surface of the spectacle lens. Therefore, since the installation position of the optical path changing member can be brought close to the exit surface of the lens, the optical path changing member can be made small.
And since it can set to a spectacles lens in the state which attached the optical path change member, positioning work can be performed easily.

It is preferable that the holder is detachably provided on the lens transport jig.
In the present invention having this configuration, since the holder is installed on the lens conveyance jig, the optical path changing member can be installed accurately regardless of the curvature of the spectacle lens.

The spectacle lens processing apparatus of the present invention includes a lens transport jig for transporting a spectacle lens provided with a hidden mark in advance, a spectacle lens positioning apparatus for positioning the spectacle lens on the lens transport jig, and the positioning apparatus. An eyeglass lens processing apparatus comprising: a printing device that prints on the eyeglass lens positioned in the position, wherein the positioning device is irradiated with a light source, a translucent member provided with a reference mark, and the light source. And a monitor for observing the detection light transmitted through the translucent member and the spectacle lens, and an optical path of the detection light that is disposed between the monitor and the spectacle lens and is transmitted through the spectacle lens is directed to the monitor. And an optical path changing member to be changed.
In the present invention with this configuration, as described above, the spectacle lens and the lens transport jig can be accurately positioned by the positioning device, so that the spectacle lens mounted on the lens transport jig is accurately printed by the printing device. be able to.

1 is a schematic view of a spectacle lens processing apparatus according to a first embodiment of the present invention. 1 is a schematic view of a spectacle lens positioning device according to a first embodiment of the present invention. FIG. Schematic of the positioning apparatus of the spectacle lens concerning 2nd Embodiment of this invention. The schematic diagram of the positioning device of the spectacles lens concerning a 3rd embodiment of the present invention. Schematic of the spectacle lens positioning device according to the fourth embodiment of the present invention. Schematic of the spectacle lens positioning device according to the fifth embodiment of the present invention. Schematic of the spectacle lens positioning device according to the sixth embodiment of the present invention.

Hereinafter, a spectacle lens processing apparatus according to a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows the overall configuration of the eyeglass lens processing apparatus of the present embodiment.
In FIG. 1, an eyeglass lens processing apparatus 1 is a marking apparatus that mainly prints a layout pattern on a lens, and includes a jig mounting portion 2 and a marking portion 3.
The jig mounting part 2 has a single focus lens jig mounting part 5 for mounting a single focus lens, and a progressive multifocal lens jig mounting part 6 for mounting a progressive multifocal lens L to which the present embodiment is applied. .
The marking unit 3 has a printing device 7.

  The single focus lens jig mounting portion 5 measures the optical performance of the single focus lens 100, positions the single focus lens for each type of the single focus lens 100, and fixes the single focus lens to the lens transport jig in the positioned state. A turntable-like mounting table 51 for positioning and mounting the single focus lens 100 and a lens meter 52 for measuring the power, astigmatism axis direction, and prism base direction of the single focus lens 100 are provided.

A first transport device 21 is disposed adjacent to the mounting table 51, and a second transport device 22 is disposed adjacent to the first transport device 21. The first transport device 21 holds the single focus lens by suction and passes it to the second transport device 22. The second transport device 22 transports the single focus lens 100 to the measurement position of the lens meter 52 with the geometric center as a reference, and delivers the single focus lens 100 whose optical performance has been measured by the lens meter 52 to the alignment unit 53. .
The alignment unit 53 matches the geometric center of the single focus lens 100 arranged in a predetermined direction with the central axis of the lens transport jig 10, and the direction of the lens transport jig 10 and the direction of the single focus lens 100 are The single focus lens is sucked and held on the lens transport jig 10.

The progressive multifocal lens jig mounting portion 6 includes a positioning device 60 that positions the progressive multifocal lens L, and a lens transport jig 10 that transports the progressive multifocal lens L together with the single focus lens 100.
The progressive multifocal lens jig mounting portion 6 is provided on the front side of the turntable 6A. The lens transport jig 10 that sucks and holds the progressive multifocal lens L moves to the back side by rotating the turntable 6A. A third transport device 23 is disposed on the back side of the turntable 6A, and the third transport device 23 is configured to hold the lens transport jig 10 with a chuck and pass it to the fourth transport device 24 of the printing device 7. The

  The printing device 7 prints a layout pattern on the lens surface with erasable ink. For example, the printing device 7 is a device that prints by discharging hot melt ink by an ink jet method. In this embodiment, both the single focus lens and the progressive multifocal lens are printed, and the fourth transport device 24 carries in the lens transport jig 10 that holds the single focus lens 100 and the progressive multifocal lens L by suction. It is supposed to be.

FIG. 2 shows a schematic configuration of the spectacle lens positioning device 60 and the lens transport jig 10 according to the first embodiment of the present invention. In addition, in each embodiment, the same component is attached | subjected with the same code | symbol and description is abbreviate | omitted.
In FIG. 2, the lens transport jig 10 places the progressive multifocal lens L with its convex surface facing upward, and is located at substantially the center of the cylindrical main body 11 and the concave surface of the progressive multifocal lens L. A suction unit 12 that is in contact with a suction unit (not shown) is provided, and a decompression source (not shown) is connected to the suction unit. When the suction part 12 is depressurized by a pressure reducing source, the tip part 120 of the suction part 12 is sucked and fixed to the concave surface of the progressive multifocal lens L.

  The spectacle lens positioning device 60 is for positioning a progressive multifocal lens L having a concealed mark M provided on a convex surface in advance on the suction portion 12 of the lens transport jig 10 and irradiating a detection light P of laser light. Light source, a plate-like translucent member 61 and a plate-like projection member 62 arranged in parallel with each other with a progressive multifocal lens L interposed therebetween, and a translucent member 61 irradiated with light from the light source. A monitor 63 having a light receiving portion 63A for receiving the detection light P that passes through the focus lens L and the projection member 62, and a prism 8 disposed between the projection member 62 and the progressive multifocal lens L are configured. .

The translucent member 61 is formed of a glass plate, and a reference mark S having a scale for alignment corresponding to the position of the hidden mark M is provided on the incident surface located on the light source side.
The projection member 62 is a frosted glass in which an insertion hole 62A for inserting the main body 11 of the lens conveying jig 10 is formed, and the detection light P transmitted through the translucent member 61 and the progressive multifocal lens L is projected in an overlapping manner. .
The monitor 63 observes an image projected on the projection member 62, and includes a monitor main body 630 provided with a planar circular light receiving unit 63A and a display device 631 for displaying an image received by the monitor main body 630. .

The prism 8 is an optical path changing member that changes the optical path of the detection light P that passes through the progressive multifocal lens L toward the light receiving unit 63A of the monitor 63, and is opposite to the base direction of the prism refractive power of the progressive multifocal lens L. This is a triangular glass optical element having prism refractive power in the base direction.
When the progressive multifocal lens L has a high refractive power, the optical path P ₀ of the detection light P is largely refracted by the progressive multifocal lens L and deviates from the light receiving portion 63A. However, the progressive multifocal lens L and the projection member By disposing the prism 8 between the optical path P _{1 and} the optical path P ₁ of the detection light P greatly refracted by the progressive multifocal lens L, the prism 8 has a base opposite to the base direction of the refractive power of the progressive multifocal lens L. The direction is changed and the detection light P enters the light receiving portion 63A straight.

The prism 8 has an entrance surface 8A that faces the concave surface of the progressive multifocal lens L, an exit surface 8B, and a base 8C, and the apex angle that faces the base 8C is a triangle. In the present embodiment, the prism 8 is arranged on the concave surface that is the exit surface of the progressive multifocal lens L by a holding means (not shown).
Here, when the refractive index of the material of the prism 8 is n and the amount of prism is p,
α = {arct (p / 100)} / (n−1) (1)
The distance from the lens center position of the progressive multifocal lens L to the center position of the hidden mark M is t (cm), the lens power (refractive power) is D (Diopter), and the prism refractive power in the vicinity of the hidden mark M is pm, Then, the distance between the detection light exit side position of the progressive multifocal lens L and the incident surface 8A of the prism 8 is e (m), and further passes through the incident position of the detection light on the incident surface 8A and the progressive multifocal lens L. When a straight line parallel to the detection light incident on H is g, and a straight line passing through the detection light exit side position of the progressive multifocal lens L and parallel to the detection light incident on the progressive multifocal lens L is g. If the distance between h and the straight line g is f (cm),
pm = t × D = f / e (2)
It becomes.

The distance between the detection light emission side position of the progressive multifocal lens L and the light receiving portion 63A is a (m), and the distance between the straight line g and the end point on the opposite side of the base 8C of the light receiving portion 63A is b. (Cm)
The conditions under which the detection light P is received by the light receiving unit 63A are as follows:
p + pm <(b−f) / (ae) (3)
It is.

For example, consider the case where the prism 8 is not disposed. If the distance t is 1.7 cm, the distance a is 0.1 m, and the distance b is 15 mm, the prism refractive power pm in the vicinity of the hidden mark M of the progressive multifocal lens L is 1.7D ( Δ). Note that 1Δ is 1 cm / 1 m. Here, since the prism 8 is not disposed, it is assumed that p = 0, e = 0, and f = 0, and from Equation (3), D <(b / a) / t = (1.5 / 0.1) / 1 .7 ≒ 8.8 (Diopter)
It becomes. In other words, when the prism 8 is not disposed, the detection light P is removed from the light receiving unit 63A when a lens having a lens power of 8.8 Diopter or more is used.
In this embodiment, it is necessary to use a lens having a lens power of 8.8 Diopter or more. For this purpose, when the prism 8 is sandwiched between the exit surfaces of the progressive multifocal lens L, the expression (2) From the formula (3), it is necessary to satisfy the following formula.
p <{(b−t × D × e) / (ae)} − t × D
From this equation, it can be seen that the lens power and the prism amount p are in a relative relationship.
Table 1 shows the relationship between the lens power D and the prism amount p when the distance t is 1.7 cm, the distance a is 0.1 m, and the distance b is 15 mm, with the distance e being changed.

  As described above, it can be understood that the detection light transmitted through the progressive multifocal lens L cannot be displayed on the monitor 63 without the prism 8 when the progressive multifocal lens L has a high refractive power of 10 or more. Note that as the arrangement position of the prism 8 is further away from the exit surface of the lens, the amount of prism necessary for image reception increases. For this reason, the amount of prism required for image reception may be smaller when the arrangement position of the prism 8 is closer to the exit surface of the lens. Further, as a means for reducing the prism 8, it is preferable to increase the refractive index of the material.

Next, the processing method of the progressive multifocal lens L of this embodiment is demonstrated.
First, the progressive multifocal lens L is positioned on the suction portion 12 of the lens transport jig 10 using the eyeglass lens positioning device 60.
Therefore, when the progressive multifocal lens L has a high refractive power, the prism 8 is set at a predetermined position, and the progressive multifocal lens L is temporarily placed on the distal end portion 120 of the lens conveying jig 10, and the translucent member 61. The detection light is irradiated from the light source.
The detection light P emitted from the light source is incident parallel to the normal line of the translucent member 61, exits the translucent member 61, and enters the convex surface of the progressive multifocal lens L. The detection light P incident from the convex surface is refracted inside the progressive multifocal lens L, then exits from the concave surface, and enters the incident surface 8 A of the prism 8. The detection light P is refracted in the direction opposite to the direction refracted by the progressive multifocal lens L inside the prism 8, and then exits from the exit surface 8B. The emitted light is parallel to the light incident on the translucent member 61. The detection light emitted from the prism 8 enters in parallel with the normal line of the projection member 62.
In the projection member 62, the hidden mark M provided in advance on the progressive multifocal lens L and the reference mark S provided on the translucent member 61 are projected, and these marks are received by the light receiving unit 63 </ b> A of the monitor 63. Is displayed on the display device 631.
On the other hand, when the refractive power of the progressive multifocal lens L is not high, positioning is performed by a method similar to the conventional one without using the prism 8.

While viewing the image displayed on the display device 631, the progressive multifocal lens L is moved so that the hidden mark M coincides with the reference mark S. In the coincident state, the progressive multifocal lens L is moved to the lens conveying jig 10. It is fixed to the suction part 12 by suction. In this embodiment, two hidden marks M are provided for one progressive multifocal lens L, and two reference marks S are provided on the translucent member 61 corresponding to the hidden marks M. Therefore, after the above-described positioning process is performed on the pair of hidden marks M and the reference marks S, the remaining pair of hidden marks M and the reference marks S may be performed.
The progressive multifocal lens L attached to the lens conveying jig 10 is moved to the back side by the rotation of the turntable 6A, and is transferred to the fourth conveying device 24 together with the lens conveying jig 10, and further to the printing device 7. Sent to. In the printing apparatus 7, normal printing is performed on the progressive multifocal lens L.

Therefore, in the first embodiment, the following operational effects can be achieved.
(1) A light source, a translucent member 61 provided with a reference mark S, and a light receiving unit 63A that receives detection light P that is emitted from the light source and transmitted through the translucent member 61 and the progressive multifocal lens L. And a prism 8 that is disposed between the monitor 63 and the progressive multifocal lens L and changes the optical path of the detection light P that passes through the progressive multifocal lens L toward the light receiving portion 63A of the monitor 63. A positioning device 60 is provided. For this reason, when the progressive multifocal lens L has a high refractive power, the prism 8 is disposed as an optical path changing member between the light receiving portion 63A of the monitor 63 and the progressive multifocal lens L, so that the progressive multifocal lens L is transmitted. The optical path of the detection light P is changed toward the monitor 63, and the detection light P surely enters the light receiving portion 63A of the monitor 63. Therefore, it is not necessary to make the monitor 63 movable or to change the monitor 63 to a large light receiving area of the light receiving portion 63A, and simply arrange the prism 8 between the progressive multifocal lens L and the monitor. By the method, the progressive power multifocal lens L having a high refractive power can be accurately positioned with respect to the lens conveying jig 10.

(2) Since the prism 8 has a prism refractive power in the base direction opposite to the base direction of the prism refractive power of the progressive multifocal lens L, the prism refractive power refracted by the progressive multifocal lens L is changed to the prism refractive power of the prism 8. Since the force cancels out, the detection light P emitted from the prism 8 can be made parallel to the detection light incident on the progressive multifocal lens L. Therefore, regardless of the distance between the progressive multifocal lens L and the monitor 63, it becomes possible to accurately enter the center of the light receiving portion 63A of the monitor 63. From this point, the progressive multifocal lens L can be positioned accurately.

(3) The eyeglass lens processing apparatus 1 includes the positioning device 60 having the above-described configuration and the printing device 7 that performs printing on the progressive multifocal lens L positioned by the positioning device 60. Therefore, since the progressive multifocal lens L and the lens transport jig 10 can be accurately positioned by the positioning device 60, the printing device 7 can accurately print the progressive multifocal lens L attached to the lens transport jig 10. can do.

Next, a second embodiment of the present invention will be described with reference to FIG.
The second embodiment differs from the first embodiment in that the holder for mounting the prism 8 has a specific structure, and the other configuration is the same as that of the first embodiment.
FIG. 3 corresponds to FIG. In FIG. 3, the monitor 63 shown in FIG. 2 is omitted.
3, the spectacle lens positioning device 60 includes a light source (not shown), a plate-like translucent member 61, a plate-like projection member 62, a monitor 63 (see FIG. 2), and a prism 8. In this embodiment, the prism 8 is provided in the holder 81, and this holder 81 is detachably attached to the concave surface located on the monitor side of the progressive multifocal lens L.
The prism 8 is an optical element having a triangular cross section having an entrance surface 8A, an exit surface 8B, and a base 8C, and a locking portion 8D is provided at each corner portion where the entrance surface 8A and the exit surface 8B intersect with the base 8C. Protrusively formed.

The holder 81 is a suction cup made of an elastic member such as rubber, and has a cylindrical portion 811 formed therein with an engaging groove 81A that engages with the locking portion 8D, and a flange portion formed at one end of the cylindrical portion 811. 812. The tube portion 811 may be a cylinder or a square tube. When the cylindrical portion 811 is a cylinder, the planar shape of the incident surface 8A of the prism 8 may be substantially circular according to the inner peripheral shape of the cylindrical portion 811, and when the cylindrical portion 811 is a square tube, the prism The plane shape of the eight incident surfaces 8A may be rectangular.
The procedure for positioning the progressive multifocal lens L on the lens transport jig 10 is the same as in the first embodiment, but the holder 81 provided with the prism 8 is mounted on the concave surface of the progressive multifocal lens L, and the lens transport is performed. After the positioning to the jig 10 and the printing process are completed, the first embodiment differs from the first embodiment in that it is removed from the concave surface of the progressive multifocal lens L.

Therefore, in 2nd Embodiment, there can exist the following effect other than the effect similar to (1)-(3) of 1st Embodiment.
(4) Since the prism 8 is provided in the holder 81, the installation work of the prism 8 can be easily performed through the holder 81.
(5) Since the holder 81 provided with the prism 8 is detachably attached to the monitor side surface of the progressive multifocal lens L, the installation position of the prism 8 can be made close to the concave surface. Therefore, a small amount of prism 8 is sufficient, and the prism 8 itself can be downsized. Moreover, since the progressive multifocal lens L can be set with the prism 8 attached, the positioning operation can be performed easily.
(6) Since the holder 81 is made of rubber, the prism 81 can be easily attached by the elastic deformation of the holder 81.

Next, a third embodiment of the present invention will be described with reference to FIG.
The third embodiment is different from the second embodiment in the holder on which the prism 8 is mounted, and the other configurations are the same as those of the second embodiment.
FIG. 4 corresponds to FIG. In FIG. 4, the monitor 63 is not shown as in FIG.
4, the spectacle lens positioning device 60 includes a light source (not shown), a plate-like translucent member 61, a plate-like projection member 62, a monitor 63 (see FIG. 2), and a prism 8. In the present embodiment, the prism 8 is provided in a disk-shaped holder 82, and this holder 82 is detachably provided on the main body 11 of the lens transport jig 10.
That is, the holder 82 includes a cylindrical engaging portion 821 that is detachably provided on the main body 11 and a ring-shaped portion 822 that is provided on the outer peripheral portion of the engaging portion 821, and is parallel to the projection member 62. Has been placed.

The ring-shaped portion 822 is formed with an engaging groove that engages with the engaging portion 8 </ b> D of the prism 8. An appropriate material such as a synthetic resin can be used for the engaging portion 821 and the ring-shaped portion 822.
The procedure for positioning the progressive multifocal lens L on the lens transport jig 10 is the same as that in the second embodiment, except that the holder 82 provided with the prism 8 is mounted on the main body 11 of the lens transport jig 10. Different from the embodiment.

Therefore, in 3rd Embodiment, there can exist the following effect other than the effect similar to (1)-(4) of 2nd Embodiment.
(7) Since the holder 82 has a disk shape and is installed on the main body 11 of the lens transport jig 10, the prism 8 can be accurately installed regardless of the curvature of the concave surface of the progressive multifocal lens L. .

Next, a fourth embodiment of the present invention will be described with reference to FIG.
Unlike the second embodiment, the fourth embodiment uses a meniscus lens as the optical path changing member, and the other configurations are the same as those of the second embodiment.
FIG. 5 corresponds to FIG. In FIG. 5, the monitor 63 is not shown as in FIG.
In FIG. 5, a spectacle lens positioning device 60 includes a light source (not shown), a plate-like translucent member 61, a plate-like projection member 62, a monitor 63 (see FIG. 2), and a meniscus lens 9 as an optical path changing member. Configured. In the present embodiment, the meniscus lens 9 is provided in a plurality of holders 83 made of rubber suckers, and these holders 83 are detachably attached to the concave surface of the progressive multifocal lens L.

The meniscus lens 9 is a glass optical element having a prism refractive power in the base direction opposite to the base direction of the prism refractive power of the progressive multifocal lens L.
A circular opening 9 </ b> A is formed at the center of the meniscus lens 9 so as to pass through the main body 11 of the lens transport jig 10.
The procedure for positioning the progressive multifocal lens L on the lens transport jig 10 is the same as in the second embodiment.

Therefore, in the fourth embodiment, the same operational effects as the (1) to (6) of the second embodiment can be achieved, and the following operational effects can be achieved.
(8) Since the optical path changing member is the meniscus lens 9, the cost of the apparatus can be reduced by making the optical path changing member a simple structure.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
The fifth embodiment is different from the second embodiment in the holder on which the prism 8 is mounted, and other configurations are the same as those in the second embodiment.
FIG. 6 corresponds to FIG. In FIG. 6, the monitor 63 is not shown as in FIG.
In FIG. 6, the spectacle lens positioning device 60 includes a light source (not shown), a plate-like translucent member 61, a plate-like projection member 62, a monitor 63 (see FIG. 2), and a prism 8. In the present embodiment, the prism 8 is provided on the holder 84.

The holder 84 includes a holder main body 841 in which an engaging groove that engages with the engaging portion 8D of the prism 8 is formed, and a gripping portion 842 that is integrally formed with the holder main body 841 and is gripped by an operator by hand. These members are integrally formed from an appropriate material such as synthetic resin.
The procedure for positioning the progressive multifocal lens L on the lens conveying jig 10 is the same as that in the second embodiment. However, the operator holds the holding portion 842 of the holder 84 at the time of positioning and moves the prism 8 to the concave surface of the progressive multifocal lens L. The second embodiment is different from the second embodiment.

Therefore, in the fifth embodiment, in addition to the same operational effects as (1) to (4) of the second embodiment, the following operational effects can be achieved.
(9) Since the holder 84 includes the holder main body 841 for holding the prism 8 and the grip portion 842 integrally formed with the holder main body 841, the progressive multifocal lens L having a high refractive index is positioned. Sometimes, the worker can easily perform the positioning operation by placing the holder 84 on the concave surface side of the progressive multifocal lens L.

Next, a sixth embodiment of the present invention will be described with reference to FIG.
In the sixth embodiment, the optical path changing member is different from that of the third embodiment, and other configurations are the same as those of the third embodiment.
FIG. 7 corresponds to FIG. In FIG. 7, the monitor 63 is not shown as in FIG.
7, the spectacle lens positioning device 60 includes a light source (not shown), a plate-like translucent member 61, a plate-like projection member 62, a monitor 63 (see FIG. 2), and a mirror member 95. .

The mirror member 95 is an optical path changing member that changes the optical path of the detection light P transmitted through the progressive multifocal lens L toward the light receiving portion 63A (see FIG. 2) of the monitor 63.
In the present embodiment, the mirror member 95 is provided in a disk-shaped holder 85, and this holder 85 is detachably provided on the main body 11 of the lens transport jig 10.
That is, the holder 85 includes a cylindrical engaging portion 851 that is detachably provided on the main body 11 and a ring-shaped portion 852 that is provided on the outer peripheral portion of the engaging portion 851, and is parallel to the projection member 62. Has been placed.
The procedure for positioning the progressive multifocal lens L on the lens transport jig 10 is the same as that in the third embodiment.
Therefore, in the sixth embodiment, the same operational effects as the (1), (3), (4), and (7) of the third embodiment can be obtained, and the following operational effects can be obtained.
(10) Since the optical path changing member is the mirror member 95, the structure of the positioning device 60 can be simplified and the cost can be reduced.

Note that the present invention is not limited to the above-described embodiments, and it goes without saying that modifications and improvements within the scope of achieving the objects and effects of the present invention are included in the contents of the present invention. Absent.
For example, each of the embodiments described above is for positioning the progressive multifocal lens L with respect to the lens transport jig 10, but the present invention can also be applied to a single focus lens.

Furthermore, although it was set as the structure provided with the printing apparatus 7 which prints to the progressive multifocal lens L positioned with the positioning apparatus 60 as an eyeglass lens processing apparatus, in this invention, apparatuses other than a printing apparatus, for example, a lens shape The present invention can also be applied to a processing apparatus.
In the present invention, it is not always necessary to use the projection member 62.
In addition to the prism 8, the meniscus lens 9, and the mirror member 95, an optical fiber may be used as the optical path changing member.

  INDUSTRIAL APPLICABILITY The present invention can be used for a positioning device that positions a spectacle lens with respect to a lens transport jig when processing spectacle lenses such as progressive multifocal lenses and single focus lenses.

DESCRIPTION OF SYMBOLS 1 ... Eyeglass lens processing apparatus, 2 ... Jig mounting part, 3 ... Marking part, 6 ... Progressive multifocal lens jig mounting part, 7 ... Printing apparatus, 8 ... Prism (optical path changing member: optical component), 8A ... Incident surface, 8B ... Exit surface, 8C ... Base, 8D ... Locking portion, 9 ... Menniscus lens (optical path changing member: optical component), 10 ... Lens conveying jig, 60 ... Glass lens positioning device, 61 ... Translucent light 62 ... projection member, 63 ... monitor, 63A ... light receiving part, 81, 82, 83, 84, 85 ... holder, 95 ... mirror member, 630 ... monitor body, 631 ... display device, L ... progressive multifocal lens (Glasses lens), M ... hidden mark, P ... detection light, P _0, P ₁ ... optical path, S ... reference mark

Claims (9)

A spectacle lens positioning device for positioning a spectacle lens provided with a hidden mark in advance on a lens transport jig,
A monitor having a light source, a translucent member provided with a reference mark, a light receiving unit that receives the detection light that is irradiated from the light source and that passes through the translucent member and the spectacle lens; and An eyeglass lens positioning device comprising: an optical path changing member that is arranged between the eyeglass lens and changes an optical path of detection light that passes through the eyeglass lens toward the monitor. In the spectacle lens positioning device according to claim 1,
The eyeglass lens positioning device, wherein the optical path changing member is an optical component having a prism refractive power in a base direction opposite to a base direction of the prism refractive power of the spectacle lens. In the spectacle lens positioning device according to claim 2,
The apparatus for positioning a spectacle lens, wherein the optical component is a prism. In the spectacle lens positioning device according to claim 2,
The optical component is a meniscus lens, and is a spectacle lens positioning device. In the spectacle lens positioning device according to claim 1,
The spectacle lens positioning apparatus, wherein the optical path changing member is a mirror member that reflects detection light transmitted through the spectacle lens toward the monitor. In the spectacle lens positioning device according to any one of claims 1 to 4,
The apparatus for positioning a spectacle lens, wherein the optical path changing member is provided in a holder. In the spectacle lens positioning device according to claim 6,
The eyeglass lens positioning device, wherein the holder is detachably attached to a monitor side surface of the eyeglass lens. In the spectacle lens positioning device according to claim 7,
The eyeglass lens positioning apparatus, wherein the holder is detachably provided on the lens conveying jig. Printing on a lens conveyance jig that conveys a spectacle lens provided with a hidden mark in advance, a spectacle lens positioning device that positions the spectacle lens on the lens conveyance jig, and a spectacle lens positioned by the positioning device A spectacle lens processing device comprising a printing device,
The positioning device includes: a light source; a translucent member provided with a reference mark; a monitor that observes detection light that is emitted from the light source and is transmitted through the translucent member and the spectacle lens; And an optical path changing member that changes an optical path of detection light transmitted through the spectacle lens toward the monitor.

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