JP2007136581A - Processing method of lens and holding sheet used in processing of lens - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a processing method and a holding sheet used for processing of the lens which can certainly fix a retaining fixture and grind the lens to an exact shape even in the lens applied with a water repellent coating. <P>SOLUTION: The processing method for the lens comprises a step of sticking a holding sheet 60, which has a surface with higher wettability against the adhesive than the surface of the lens 12 and is equipped with a support sheet 62 forming an adhesive layer on the lens 12 side, on one side surface of the lens 12, and a step of sticking a lock sheet 42 on the holding sheet 60 stuck to the lens 12. The holding sheet 60 stuck to the lens 12 has a size extending toward outside from the lock sheet 42, and the clearance parts 66a, 66b, 66c for confirming mark points 40 are formed on the area corresponding to the mark points 40 attached to the lens 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lens processing method and a holding sheet used for lens processing, and more particularly to a lens processing method for adjusting the shape of a lens according to, for example, spectacle design, and a holding sheet used for lens processing.

  FIG. 11 is a perspective view showing an example of eyeglasses. The spectacles 10 include two lenses 12. The two lenses 12 are connected by a bridge 14. Temples 16 for attaching to the ears are attached to both sides of the lens 12 connected by the bridge 14.

  As shown in FIGS. 13A and 13B, the lens 12 is supplied from a lens manufacturer so as to have a circular planar shape and a cross-sectional shape corresponding to each visual acuity. The outer periphery of the lens 12 is ground to obtain a lens 12 having a shape that matches the design of the glasses 10.

  In order to grind the lens 12, a lens grinder 20 as shown in FIG. 12 is used. The lens grinding machine 20 includes a grinding chamber 22. Drive parts 24a and 24b are provided on both sides in the grinding chamber 22, and clamp shafts 26a and 26b are formed to extend from these drive parts 24a and 24b. Then, the feed amounts of the clamp shafts 26a and 26b are controlled by the drive units 24a and 24b. In addition, the clamp shafts 26a and 26b are rotated by the drive units 24a and 24b, and the amount of rotation is also controlled.

  A jig receiver 28 is formed at the tip of one clamp shaft 26a. The jig receiver 28 is for mounting a holding jig for holding a lens described later. A lens presser 30 is formed at the tip of the other clamp shaft 26b. The lens presser 30 is pressed against the facing surface side of the lens 12 held by the jig receiver 28. An elastic body such as rubber is provided at the tip of the lens retainer 30 so that the surface of the lens 12 is not damaged.

  Furthermore, two water supply nozzles 32 for supplying water between the jig receiver 28 and the lens holder 30 are formed. In addition, a water clean nozzle 34 is formed at an intermediate portion between the two water supply nozzles 32. The water clean nozzle 34 is used to supply water when grinding the polycarbonate lens to wash away the dust.

  A plurality of disc-shaped grindstones 36 are provided in the grinding chamber 22. These grindstones 36 include abrasive grains having different particle sizes, and are selectively used according to the type and application of the lens 12 to be ground. That is, it can be used according to the type of lens, such as a glass lens or a plastic lens, or according to the grinding application, such as for roughing or finishing.

  In order to grind the lens 12 using the lens grinder 20, a jig for holding the lens 12 on the jig receiver 28 is attached. For this purpose, as shown in FIG. 13, a lens meter or the like is used to stamp the lens 12 with three mark points 40, that is, a first mark point 40a, a second mark point 40b, and a center mark point 40c. . The marking point 40 is stamped on the convex surface side of the lens 12 along a straight line that becomes horizontal when the glasses 10 are used. At this time, for example, in the case of a single focus lens for myopia, the center mark point 40c is stamped on the optical center of the lens 12. Further, in the case of an astigmatic lens or the like, the three mark points 40 are impressed on the lens 12 so that the straight line in which the three mark points 40 are arranged and the axis of astigmatism are the axis angle of the prescription.

  Further, as shown in FIGS. 14 and 15, a lock sheet 42 made of a double-sided adhesive tape is attached to the convex side of the lens 12. The lock sheet 42 made of a double-sided pressure-sensitive adhesive tape has a pressure-sensitive adhesive layer formed on both surfaces of a slightly thick base material of about 0.8 mm, for example. Further, a through hole 42a is formed at the center of the lock sheet 42 made of a double-sided adhesive tape, and the mark point 40 can be confirmed through the through hole 42a. The lock sheet 42 made of this double-sided pressure-sensitive adhesive tape is formed in such a size that its longitudinal direction is accommodated inside the first mark point 40a and the second mark point 40b at both ends.

  A holding jig 44 is attached on the lock sheet 42 made of a double-sided adhesive tape by using an axising machine or the like. The holding jig 44 is used to hold the lens 12 on the jig receiver 28 of the lens grinding machine 20. The holding jig 44 includes a cup-like sticking portion 46 that is stuck to a lock sheet 42 made of a double-sided adhesive tape. A mounting part 48 for mounting on the jig receiver 28 of the lens grinding machine 20 is formed on the convex surface side of the sticking part 46. The mounting part 48 is formed so as to protrude from the sticking part 46. A circular recess 50 is formed at the center of the mounting portion 48, and a through hole 52 is formed at the center. Therefore, the through hole 52 is a hole penetrating from the mounting portion 48 side toward the central portion of the attaching portion 46. By forming the through hole 52, the holding hole 44 can be attached to an accurate position by aligning the through hole 52 with the center mark 40c of the lens 12.

  Further, three grooves 54 a, 54 b and 54 c are formed at the end of the mounting portion 48. The grooves 54a, 54b, 54c are formed radially from the recess 50 side toward the outside. The two grooves 54a and 54b are linearly arranged, and another groove 54c is formed in a direction orthogonal to the grooves 54a and 54b. Here, the two grooves 54a and 54b are formed to have a wider width than the other grooves 54c. Then, the holding jig 44 is mounted on the convex surface of the lens 12 so that the two grooves 54 a and 54 b arranged in a straight line are arranged on a straight line in which the three mark points 40 are arranged. Further, the through hole 52 formed in the holding jig 44 is disposed at a position corresponding to the center mark 40 c of the lens 12. Therefore, the groove 54c of the holding jig 44 is disposed in a direction above the lens 12 when the spectacles 10 are used.

  The holding jig 44 attached to the lens 12 is attached to the jig receiver 28 of the lens grinding machine 20. At this time, since the grooves 54a, 54b, and 54c are formed in the holding jig 44, by forming convex portions that fit into the grooves 54a, 54b, and 54c in the jig receiver 28, the lens 12 The direction can be determined.

  With the holding jig 44 attached to the jig receiver 28, the clamp shaft 26 b is extended and the lens presser 30 is pressed against the concave surface side of the lens 12. Thereby, the lens 12 is sandwiched and fixed between the jig receiver 28 and the lens holder 30. In this state, the grindstone 36 is rotated and pressed against the end of the lens 12, whereby the lens 12 is ground. At this time, water is supplied from the water supply nozzle 32, the heat generated by grinding is cooled, and the cutting powder is washed away.

  The lens 12 is ground by storing the lens shape in advance. The lens shape can be stored, for example, by tracing the shape of the frame, tracing the shape of the lens template, or tracing the shape of the dummy lens. Since the direction of the lens 12 is determined by the grooves 54a, 54b, and 54c of the holding jig 44, the lens 12 is ground in the correct and accurate shape when the spectacles 10 are used. Can do. The glasses 10 are completed by attaching the bridge 14 and the temple 16 to the lens 12 thus ground.

Some spectacle lenses include, for example, a material that makes it difficult to damage the lens surface, or a material that is coated with an ultraviolet absorbing material. In addition, a lens surface coated with a substance that is difficult to adhere to dirt has been developed and used as an antifouling lens. However, such an antifouling lens is coated with a water-repellent substance that is difficult to adhere to water or oil, and has low wettability with respect to the adhesive of the double-sided adhesive tape. Therefore, when the lens is ground, there is a case where a deviation occurs between the lens and the holding jig, and the lens may not be ground into an accurate shape.
In view of this, a lens lock sheet has been proposed in which a holding jig can be reliably fixed and a lens can be ground into an accurate shape even with a lens having a water-repellent coating.

JP 2004-148444 A

In this conventional invention, when the lens lock sheet has insufficient holding force, it is conceivable that the lens lock sheet is enlarged to obtain a large holding force. However, when the lens lock sheet is enlarged, the stamped mark is hidden on the surface of the lens, which causes a problem that the holding jig cannot be attached at an accurate position. Further, the lens lock sheet has a certain thickness, and in the case of a lens having a large curvature, if the lens lock sheet is enlarged, it becomes difficult to bend and stick to the lens surface in some cases. For this reason, there is a limit to increasing the lens lock sheet, and it is difficult to increase the holding force of the lens lock sheet.
Therefore, a main object of the present invention is to provide a lens processing method and a lens capable of securely fixing a holding jig and grinding a lens into an accurate shape even in a lens having a water repellent coating. It is providing the holding sheet | seat used for the process of this.

The lens processing method according to claim 1 of the present invention includes a holding sheet including a support sheet having a surface that has better wettability to the pressure-sensitive adhesive than the surface of the lens and that has a pressure-sensitive adhesive layer formed on the lens side. A process of adhering to one surface of the lens, a process of adhering a lock sheet on the holding sheet to be adhered to the lens, and a holding jig on the lock sheet in accordance with a mark attached to the lens. A step of attaching a tool, a step of attaching the holding jig attached to the lens to a jig receiver of a lens grinding machine, a step of fixing the lens with the jig receiver and a lens presser, and the fixed Including a step of applying a grindstone to the lens and grinding the lens into a predetermined shape, and the holding sheet attached to the lens has a size extending outward from the lock sheet, and is attached to the lens. In a region corresponding to printed marks, in which the gap portion for confirming the marked points have been formed, a method of processing a lens.
According to a second aspect of the present invention, there is provided a lens processing method comprising: a step of attaching the holding sheet on the other surface of the lens; and the step of attaching the holding sheet on the other surface of the lens. A lens processing method in which the lens pressing is pressed onto the lock sheet on the other surface of the lens in the step of fixing the lens, the method comprising: attaching a lock sheet to the other surface of the lens The holding sheet to be adhered has a larger area than the lock sheet to be adhered thereon, and a gap portion for confirming the marking point is formed in a region corresponding to the marking point attached to the lens. The lens processing method according to claim 1, wherein
According to a third aspect of the present invention, there is provided the lens processing method according to the first or second aspect, wherein the holding sheet has a lock sheet attached in advance to a surface opposite to a surface attached to the lens. It is a processing method of the described lens.
According to a fourth aspect of the present invention, in the lens processing method, the holding sheet has an adhesive layer on the surface of the support sheet that is attached to the lens and the surface of the support sheet that is opposite to the surface that is attached to the lens. The lens processing method according to claim 1, wherein the lens is a double-sided pressure-sensitive adhesive tape.
The lens processing method according to claim 5 of the present invention is the lens according to any one of claims 1 to 3, wherein the holding sheet is a mesh sheet having a pressure-sensitive adhesive layer on a surface attached to the lens. This is a processing method.
In the lens processing method according to claim 6 of the present invention, a plurality of the holding sheets are stuck in parallel so that a gap for confirming a mark point can be formed on one surface of the lens. A lens processing method according to any one of claims 1 to 5.
A holding sheet used for processing a lens according to claim 7 of the present invention includes a support sheet having a surface with better wettability to the pressure-sensitive adhesive than the surface of the lens and having a pressure-sensitive adhesive layer formed on the lens side. A step of sticking the holding sheet to one surface of the lens, a step of sticking a lock sheet on the holding sheet to be stuck to the lens, and the lock sheet on the lock sheet in accordance with the mark attached to the lens Attaching a holding jig to the lens, attaching the holding jig attached to the lens to a jig receiver of a lens grinder, fixing the lens with the jig receiver and a lens presser, and It is used for lens processing including a step of applying a grindstone to the fixed lens and grinding it into a predetermined shape, and the holding sheet adhered to the lens is the lock tape Used to process the lens, which has a size that extends toward the outer side and is formed with a gap portion for confirming the mark point in an area corresponding to the mark point attached to the lens. It is a holding sheet.
The holding sheet used for processing the lens according to claim 8 of the present invention is such that the holding sheet has a lock sheet attached in advance to the surface opposite to the surface attached to the lens. 7 is a holding sheet used for processing the lens according to 7;
In the holding sheet used for processing the lens according to claim 9 of the present invention, the holding sheet is a surface of the support sheet that is opposite to the surface that is attached to the lens and the surface that is attached to the lens of the support sheet. It is a holding sheet used for the process of the lens of Claim 7 or 8 which is a double-sided adhesive tape provided with an adhesive layer.
The holding sheet used for processing a lens according to a tenth aspect of the present invention is the mesh sheet having a pressure-sensitive adhesive layer on the surface to be bonded to the lens. It is a holding sheet used for the process of the lens as described in above.
According to an eleventh aspect of the present invention, a plurality of the holding sheets used in the processing of the lens are arranged in parallel so that a gap portion for confirming a marking point can be formed on one surface of the lens. It is a holding sheet used for the process of the lens in any one of Claim 7 thru | or 10 formed so that it might stick.

By attaching a holding sheet having a size extending outward from the lock sheet to the lens surface, a large holding force as a whole can be obtained. Furthermore, by using a material having better wettability with respect to the pressure-sensitive adhesive than the lens surface as the material of the holding sheet, a large holding force can be obtained even with a small lock sheet stuck on the holding sheet. Here, it becomes easy to bend | curve by using the holding sheet formed with the thin material, and even if the curvature of a lens is large, a holding sheet can be affixed on a large area and a big holding force can be obtained. Furthermore, a larger holding sheet is used by using a holding sheet having a larger area than the lock sheet and having a gap portion for confirming the marking point in a region corresponding to the marking point given to the lens. However, the holding jig can be attached in a state where the mark stamped on the lens can be seen.
Further, by sticking the holding sheet and the lock sheet on both surfaces of the lens, both the holding jig and the lens pressing member are fixed on both surfaces of the lens, and a large holding force can be obtained. Therefore, it is possible to prevent the lens from shifting when the lens is ground by the grindstone.

  According to the present invention, the holding sheet having a size extending outward from the lock sheet is adhered to the lens surface, and the holding jig is attached using the lock sheet, so that the lens can be held with sufficient holding force. Can be fixed to a lens grinder. Therefore, even when grinding is performed by applying a grindstone to a lens having a smooth surface such as a lens to which a water-repellent coating is applied, it is possible to prevent the lens from shifting. Therefore, a lens having an accurate shape can be obtained.

  The above object, other objects, features, and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention with reference to the drawings.

  In order to obtain the eyeglasses 10 as shown in FIG. 11, a planar circular lens 12 as shown in FIG. 13 is ground. In order to grind the lens 12, a lens grinder 20 shown in FIG. 12 is used. In order to attach the lens 12 to the lens grinder 20, a holding jig 44 is attached to the lens 12 as shown in FIGS.

  On the convex surface side of the lens 12, as shown in FIG. 13, three marking points 40, that is, a first marking point 40a, a second marking point 40b, and a central marking point 40c are imprinted. At this time, when the lens 12 is a single-focus lens for myopia, the center mark point 40c is stamped on the optical center of the lens 12 using, for example, a lens meter. The three mark points 40, that is, the first mark point 40a, the second mark point 40b, and the center mark point 40c are imprinted along an axis that is horizontal when the glasses 10 are used.

A holding sheet 60 is attached to both surfaces of the lens 12 on which the marking point 40 is imprinted.
The holding sheet 60 has a pressure-sensitive adhesive layer 64 formed on one surface of a support sheet 62 made of, for example, a thin resin film, cloth or paper having a thickness of about 0.1 mm, that is, a surface to be attached to the lens 12. An adhesive layer 65 is formed on the other surface of 62.
Further, as the holding sheet 60, the surface of the support sheet 62 (and the surface of the pressure-sensitive adhesive layer 65) on the side opposite to the pressure-sensitive adhesive layer 64, that is, the side not attached to the lens 12, is compared with the surface of the lens 12. A material having high wettability to the adhesive is used.

The holding sheet 60 is smaller than the lens 12 and avoids the three mark points 40, that is, the first mark point 40a, the second mark point 40b, and the center mark point 40c. And the second holding sheet 60b and the two third holding sheets 60c and the fourth holding sheet 60d on the left and right sides of the lens 12 by the surface of the pressure-sensitive adhesive layer 64 so that the mark point 40 is located between the holding sheets 60. Affixed to.
The holding sheet 60 is adhered to avoid the areas of the first mark point 40a, the second mark point 40b, and the center mark point 40c, and the first mark point 40a and the second mark point 40c are held between the holding sheets 60. A first gap portion 66a, a second gap portion 66b, and a central gap portion 66c for confirming the mark point 40b and the center mark point 40c are formed.
That is, a first gap portion 66a corresponding to the first mark point 40a, a second gap portion 66b corresponding to the second mark point 40b, and a center gap portion 66c corresponding to the center mark point 40c are formed. As shown in the figure, the first holding sheet 60a and the second holding sheet 60b, the third holding sheet 60c and the fourth holding sheet 60d are crossed in a cross shape, and the holding sheets 60 are pasted at intervals. .
At this time, since the holding sheet 60 is formed with the first gap portion 66a, the second gap portion 66b, and the central gap portion 66c, the first gap portion 66a, the second gap portion 66b, and the central gap portion 66c are formed. Through the gap 66c, the first mark point 40a, the second mark point 40b, and the center mark point 40c can be confirmed.

  A surface 42c of the lock sheet 42 on which the adhesive layer 42b is not formed is stuck on the holding sheet 60, and the holding sheet 60 larger than the lock sheet 42 extends outward from the outer peripheral edge of the lock sheet 42. . At this time, the lock sheet 42 is stuck on the holding sheet 60 so that the central mark point 40 c is disposed in the central gap portion 42 a of the lock sheet 42.

  The lock sheet 42 may have the adhesive layer 42b formed only on one side, but as shown in FIGS. 5 and 6, the adhesive layer 42b is provided on one side of the support 42X and the adhesive layer is provided on the other side. It may be a double-sided pressure-sensitive adhesive tape on which 42d is formed, and is attached to the surface of the holding sheet 60 and the lens 12 with the pressure-sensitive adhesive layer 42d on the lens 12 side and is held on the pressure-sensitive adhesive layer 42b on the side opposite to the lens 12 You may stick with the jig | tool 44. FIG. As described above, the adhesive having the pressure-sensitive adhesive layer formed on both surfaces of the support 42 </ b> X can increase the adhesive force between the holding sheet 60 and the lock sheet 42.

Further, a sticking portion 46 of the holding jig 44 is stuck on the lock sheet 42 on the convex surface side of the lens 12. At this time, the through hole 52 of the holding jig 44 is aligned with the central mark point 40c. Further, the two grooves 54a and 54b arranged in a straight line are arranged so as to correspond to a straight line connecting three mark points, that is, the first mark point 40a, the second mark point 40b, and the center mark point 40c. Is done. Therefore, the other groove 54c is arranged in a direction orthogonal to a straight line connecting three mark points, that is, the first mark point 40a, the second mark point 40b, and the center mark point 40c.
That is, the groove 54c is arranged in an upward direction when the glasses 10 are used.

  The holding jig 44 attached to the lens 12 is attached to the jig receiver 28 of the lens grinding machine 20. At this time, since the holding jig 44 has three grooves 54a, 54b and 54c, by forming convex portions corresponding to the grooves 54a, 54b and 54c in the jig receiver 28, The direction of the lens 12 can be accurately determined. In this state, the concave surface side of the lens 12 is pressed by the lens presser 30 by pushing the clamp shaft 26b. Since the holding sheet 60 and the lock sheet 42 are also attached to the concave surface side of the lens 12, the lens presser 30 is attached to the lock sheet 42. Therefore, the lens 12 is fixed by the jig receiver 28 and the lens retainer 30 on both surfaces thereof by the adhesive force of the holding sheet 60 and the lock sheet 42. In addition, if the concave surface side of the lens 12 can be supported by the lens presser 30, only the holding sheet 60 is adhered on the concave surface side of the lens 12, and the lock sheet 42 may not be adhered.

  Water is supplied from the water supply nozzle 32 to the fixed lens 12, and the rotating grindstone 36 is brought into contact with the lens 12 to grind the lens 12. At this time, the feed amount and rotation amount of the clamp shafts 26a and 26b are adjusted, and further, the feed amount of the grindstone 36 is adjusted, so that the lens 12 is ground to have a predetermined shape.

  Thus, by using the holding sheet 60, the lens 12 can be held in a larger area than the lock sheet 42. In addition, the holding sheet 60 has such a shape that the first gap portion 66a, the second gap portion 66b, and the central gap portion 66c are formed, and is attached to the surface of the lens 12 with a gap therebetween. Therefore, it is easy to confirm the first mark point 40a, the second mark point 40b, and the center mark point 40c stamped on the lens 12. Further, by using the thin support sheet 62, even if the curvature of the lens 12 is large, the support sheet 62 is bent correspondingly, and the holding sheet 60 can be attached to the lens 12 with a large area. Moreover, it can prevent that the surface of the lens 12 gets a damage | wound by sticking the big holding sheet 60. FIG.

  Further, since the surface of the holding sheet 60 opposite to the surface to be attached to the lens 12 has higher wettability to the adhesive than the surface of the lens 12, the holding jig 44 is attached by a small lock sheet 42. Even if this is done, a sufficiently large holding force can be obtained, and the lens 12 can be prevented from shifting during grinding of the lens 12. Therefore, even the lens 12 having a smooth surface and a water-repellent coating can be fixed and ground with a sufficient holding force, and the lens 12 having an accurate shape can be obtained. Note that a plurality of holding sheets 60 may be stacked and pasted on the surface of the lens 12. In this case, you may provide a difference in the adhesive force of each holding sheet 60 as needed.

In the embodiment, the holding sheet 60 is attached to the surface of the lens 12, the lock sheet 42 is attached to the surface of the holding sheet 60, and the lock sheet 42 is attached to the holding jig 44. The order is not limited to this.
In addition, as shown in FIG. 4, a sheet in which a holding sheet 60 and a lock sheet 42 are bonded is prepared in advance, and an overlapped body of the holding sheet 60 and the lock sheet 42 is bonded to the lens 12. Alternatively, it may be attached to the holding jig 44.

Next, another method for attaching a holding sheet and a holding sheet used therefor will be described.
A holding sheet 160 different from the holding sheet 60 of the above-described embodiment is attached to both surfaces of the lens 12 on which the marking point 40 is imprinted.
The holding sheet 160 has an adhesive layer 164 formed on one surface of a support sheet 162 made of, for example, a thin mesh fabric having a thickness of about 0.1 mm or a mesh resin fat film, that is, a surface to be attached to the lens 12. Yes. As the support sheet 162 of the holding sheet 160, the surface of the support sheet 162 on the side opposite to the adhesive layer 164, that is, the side not attached to the lens 12, is wettable with respect to the adhesive compared to the surface of the lens 12. Higher ones are used.
In addition, the thing in which the adhesive layer 165 was formed in the other surface of the support sheet 162 may be used, and what has high wettability with respect to an adhesive compared with the surface of the lens 12 may be used.

The holding sheet 160 is smaller than the lens 12 and has a size larger than the three mark points 40, that is, the first mark point 40a, the second mark point 40b, and the center mark point 40c. Attached to the lens 12 by the surface 164.
The holding sheet 160 confirms the first mark point 40a, the second mark point 40b, and the center mark point 40c in the region of the first mark point 40a, the second mark point 40b, and the center mark point 40c. A first gap 166a, a second gap 166b, and a central gap 166c are formed.
That is, a first gap portion 166a corresponding to the first mark point 40a, a second gap portion 166b corresponding to the second mark point 40b, and a central gap portion 166c corresponding to the center mark point 40c are formed. ing.
At this time, the holding sheet 160 has the first gap portion 166a, the second gap portion 166b, and the central gap portion 166c, so that the first gap portion 166a, the second gap portion 166b, and the central gap portion 166c are formed. Through the gap portion 166c, the first mark point 40a, the second mark point 40b, and the center mark point 40c can be confirmed.

  On this holding sheet 160, a lock sheet 42 made of a double-sided adhesive tape having an adhesive layer 42b formed on one side of the support 42X and an adhesive layer 42d formed on the other side is affixed and is larger than the lock sheet 42. 160 wraps outwardly from the outer peripheral edge of the lock sheet 42. At this time, the lock sheet 42 is stuck on the holding sheet 160 so that the central mark point 40 c is disposed in the central gap portion 42 a of the lock sheet 42.

  The lock sheet 42 is a double-sided pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer 42 b and a pressure-sensitive adhesive layer 42 d formed on both sides, but the pressure-sensitive adhesive is applied to one surface of the support sheet 162, that is, the surface to be attached to the lens 12. When the layer 164 is formed and the adhesive layer 165 is formed on the other surface, that is, the surface adhered to the lock sheet 42, the surface of the holding jig 44 side is used as the lock sheet 42. Alternatively, a material in which the pressure-sensitive adhesive layer 42b is formed may be used.

Further, a sticking portion 46 of the holding jig 44 is stuck on the lock sheet 42 on the convex surface side of the lens 12. At this time, the through hole 52 of the holding jig 44 is aligned with the central mark point 40c. Further, the two grooves 54a and 54b arranged in a straight line are arranged so as to correspond to a straight line connecting three mark points, that is, the first mark point 40a, the second mark point 40b, and the center mark point 40c. Is done. Therefore, the other groove 54c is arranged in a direction orthogonal to a straight line connecting three mark points, that is, the first mark point 40a, the second mark point 40b, and the center mark point 40c.
That is, the groove 54c is arranged in an upward direction when the glasses 10 are used.

  The holding jig 44 attached to the lens 12 is attached to the jig receiver 28 of the lens grinding machine 20. At this time, since the holding jig 44 has three grooves 54a, 54b and 54c, by forming convex portions corresponding to the grooves 54a, 54b and 54c in the jig receiver 28, The direction of the lens 12 can be accurately determined. In this state, the concave surface side of the lens 12 is pressed by the lens presser 30 by pushing the clamp shaft 26b. Since the holding sheet 160 and the lock sheet 42 are also attached to the concave surface side of the lens 12, the lens presser 30 is attached to the lock sheet 42. Therefore, the lens 12 is fixed on both surfaces thereof by the jig receiver 28 and the lens holder 30 by the adhesive force of the holding sheet 160 and the lock sheet 42. In addition, if the concave surface side of the lens 12 can be supported by the lens presser 30, only the holding sheet 160 is adhered on the concave surface side of the lens 12, and the lock sheet 42 may not be adhered.

  Water is supplied from the water supply nozzle 32 to the fixed lens 12, and the rotating grindstone 36 is brought into contact with the lens 12 to grind the lens 12. At this time, the feed amount and rotation amount of the clamp shafts 26a and 26b are adjusted, and further, the feed amount of the grindstone 36 is adjusted, so that the lens 12 is ground to have a predetermined shape.

  Thus, by using the holding sheet 160, the lens 12 can be held in a larger area than the lock sheet 42. At this time, the support sheet 162 used for the holding sheet 160 is formed with the first gap portion 166a, the second gap portion 166b, and the central gap portion 166c. It is easy to confirm the mark 40a, the second mark 40b, and the center mark 40c. Further, by using the thin support sheet 162, even if the curvature of the lens 12 is large, the support sheet 162 is bent correspondingly, and the holding sheet 160 can be attached to the lens 12 with a large area. Moreover, it can prevent that the surface of the lens 12 gets a damage | wound by sticking the big holding sheet 160. FIG.

  Further, since the surface of the support sheet 162 of the holding sheet 160 has higher wettability with respect to the adhesive than the surface of the lens 12, even if the holding jig 44 is attached by the small lock sheet 42, a sufficiently large holding force is obtained. Therefore, the lens 12 can be prevented from being displaced during the grinding of the lens 12. Therefore, even the lens 12 having a smooth surface and a water-repellent coating can be fixed and ground with a sufficient holding force, and the lens 12 having an accurate shape can be obtained. Note that a plurality of holding sheets 160 may be stacked and pasted on the surface of the lens 12. In this case, you may provide a difference in the adhesive force of each holding sheet 160 as needed.

It is a disassembled perspective view which shows the holding structure of the lens used in order to employ | adopt the processing method of the lens of this invention. It is a top view which shows the holding structure of the lens shown in FIG. It is sectional drawing solution which shows the method of sticking a holding sheet and a double-sided adhesive tape to a lens. It is a figure which shows the laminated body of a holding sheet and a double-sided adhesive tape, (A) is the perspective view solution figure, (B) is the sectional view solution figure. It is sectional drawing solution which shows the method of sticking another holding sheet and a double-sided adhesive tape to a lens. It is a figure which shows the laminated body of another holding sheet and a double-sided adhesive tape, (A) is the perspective view solution figure, (B) is the sectional view solution figure. It is a disassembled perspective view which shows the holding structure of the lens used in order to employ | adopt another lens processing method of this invention. It is a top view which shows the holding structure of the lens shown in FIG. It is sectional drawing solution which shows the method of sticking another holding sheet and a double-sided adhesive tape to a lens. It is a figure which shows the laminated body of another holding sheet and a double-sided adhesive tape, (A) is the perspective view solution figure, (B) is the sectional view solution figure. It is a perspective view which shows an example of the spectacles using the processed lens. It is an illustration figure which shows an example of the grinding chamber of the lens grinding machine used in order to process a lens. (A) is a top view which shows the lens before the process which gave the mark, (B) is the sectional drawing. It is a disassembled perspective view which shows the holding structure of the conventional lens. It is a top view which shows the holding structure of the conventional lens shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Glasses 12 Lens 20 Lens grinder 22 Grinding chamber 28 Jig holder 30 Lens holder 32 Water supply nozzle 36 Grinding stone 40 Mark 40a First mark 40b Second mark 40c Center mark 42 Lock sheet 42a Center gap Portion 42b, 42d, 64, 65, 164, 165 Adhesive layer 42c Surface 42X Support 44 Holding jig 60, 160 Holding sheet 60a First holding sheet 60b Second holding sheet 60c Third holding sheet 60d Fourth holding sheet 62, 162 Support sheet 66a, 166a First gap 66b, 166b Second gap 66c, 166c Center gap

Claims (11)

A step of attaching a holding sheet comprising a support sheet having a surface with good wettability to the pressure-sensitive adhesive from the surface of the lens and having a pressure-sensitive adhesive layer formed on the lens side, to one side of the lens;
A step of attaching a lock sheet on the holding sheet to be attached to the lens;
A step of attaching a holding jig on the lock sheet in accordance with the markings attached to the lens;
Attaching the holding jig attached to the lens to a jig receiver of a lens grinding machine;
A step of fixing the lens with the jig receiver and a lens holder; and a step of applying a grindstone to the fixed lens and grinding the lens into a predetermined shape,
The holding sheet attached to the lens has a size extending outward from the lock sheet, and a gap for confirming a mark in a region corresponding to the mark attached to the lens. A method of processing a lens in which a portion is formed. And a step of attaching the holding sheet on the other surface of the lens, and a step of attaching the lock sheet on the holding sheet attached on the other surface of the lens. A lens processing method in which the lens presser is pressed onto the lock sheet on the other surface of the lens in the fixing step,
The holding sheet attached to the other surface of the lens has a larger area than the lock sheet attached thereon, and confirms the mark in a region corresponding to the mark attached to the lens. The lens processing method according to claim 1, wherein a gap portion is formed.   The lens processing method according to claim 1, wherein the holding sheet has a lock sheet attached in advance to a surface opposite to a surface attached to the lens.   The said holding | maintenance sheet | seat is a double-sided adhesive tape which provided the adhesive layer on the surface on the opposite side to the surface affixed to the lens in a support sheet, and the lens in a support sheet | seat. The processing method of the lens in any one of.   The lens processing method according to claim 1, wherein the holding sheet is a mesh sheet having a pressure-sensitive adhesive layer on a surface attached to the lens.   6. The lens according to claim 1, wherein a plurality of the holding sheets are attached in parallel so as to form a gap portion for confirming a marking point on one surface of the lens. Processing method. A step of attaching a holding sheet comprising a support sheet having a surface with good wettability to the pressure-sensitive adhesive from the surface of the lens and having a pressure-sensitive adhesive layer formed on the lens side, to one side of the lens;
A step of attaching a lock sheet on the holding sheet to be attached to the lens;
A step of attaching a holding jig on the lock sheet in accordance with the markings attached to the lens;
Attaching the holding jig attached to the lens to a jig receiver of a lens grinding machine;
It is used for lens processing including a step of fixing the lens with the jig receiver and a lens presser, and a step of applying a grindstone to the fixed lens and grinding it to a predetermined shape,
The holding sheet attached to the lens has a size extending outward from the lock tape, and a gap for confirming a mark in a region corresponding to the mark attached to the lens. A holding sheet used for processing a lens, in which a portion is formed.   The holding sheet used for processing the lens according to claim 7, wherein a lock sheet is previously attached to a surface opposite to a surface to be attached to the lens.   The said holding | maintenance sheet is a double-sided adhesive tape provided with the adhesive layer in the surface on the opposite side to the surface affixed to the lens in a support sheet and the lens in a support sheet. A holding sheet used for processing the lens described in 1.   The said holding sheet is a holding sheet used for the process of the lens in any one of Claim 7 thru | or 9 which is a mesh sheet | seat provided with the adhesive layer in the surface affixed on a lens.   The said holding | maintenance sheet | seat was formed so that it might be affixed in parallel so that the gap | interval part for confirming a marking point could be formed in the one surface of a lens. A holding sheet used for processing the lens described in 1.

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