JP4979927B2 - Plastic optometric lens with knob and method for manufacturing the same - Google Patents

Description

  The present invention relates to a plastic optometric lens with a knob that is loaded into a spectacle test frame and used to examine the visual acuity of a subject, and a manufacturing method and a manufacturing method for manufacturing the plastic optometric lens with a knob. Relates to the device.

  In order to enable the plastic optometry lens to be loaded into the spectacle test frame by picking it into the plastic optometry lens that is loaded into the spectacle test frame and used to examine the visual acuity of the subject, etc. A knob is provided. The following Patent Document 1, which is a document relating to a progressive power lens, shows a plastic optometry lens with a knob portion in which a knob portion protruding from the outer peripheral portion of the lens portion and formed integrally with the lens portion is formed. Also shown is a method and apparatus for producing this plastic optometric lens by injection compression molding.

Patent Document 1 also shows that information on the lens part such as the lens power is displayed on the knob part of the plastic optometry lens. In Patent Document 1, this information is displayed on the knob part. Therefore, when a plastic optometry lens is manufactured by the injection compression molding method, the stamping member is incorporated into the injection compression molding die so that information is displayed on the knob by the unevenness of the stamping member. In addition, the information is displayed on the knob by attaching a label displaying the information on the knob.
WO98 / 26707 (Tokuheihei 10-26707)

  When information about the lens part is displayed on the knob part with unevenness, it is difficult to clearly see the unevenness because the knob part is made of the same transparent plastic material as the lens part. In addition, when a label displaying information about the lens part is attached to the knob part, the information can be clearly seen, but an eyeglass dealer where the plastic optometry lens is loaded into the eyeglass test frame In such cases, the use of plastic optometry lenses is repeated, and if this optometry lens is subjected to handling such as the picking part being picked many times, there is a risk that the label will peel off. It is difficult to display for a long time. In particular, when unevenness is formed on the knob and a label is attached thereon, the contact area between the label and the knob is small, and therefore the label may be more easily peeled off.

  An object of the present invention is to make it possible to clearly see information about a lens part displayed on a knob part and to display this information on the knob part over a long period of time, and a plastic optometry lens with a knob part and the knob. A method and apparatus for manufacturing a plastic optometric lens with a part is provided.

  A plastic optometry lens with a knob according to the present invention includes a lens part, a knob part that protrudes from the outer peripheral part of the lens part and is integrally formed with the lens part, and is used when the lens part is loaded into a spectacle test frame. In the plastic optometry lens with a knob, in which information on the lens unit is displayed on the knob, the information is displayed by a paint adhering to the knob. It is.

  In the present invention, the information about the lens part is displayed by adhering the paint to the knob part. For this reason, the information about the lens part displayed on the knob part can be clearly seen, and the plastic optometric lens is used. This information can be displayed on the knob for a long time even if the knob is repeatedly used and the knob is picked many times.

  Further, when a coating film including at least a hard coating film is applied to the surface of the optometric lens including the knob portion, it is preferable to attach a paint on the coating film.

  According to this, since the operation of applying the coating film is performed before the operation of attaching the paint, the liquid used in connection with the operation of applying the coating film, for example, the coating liquid for the coating film or the coating film is applied. It is possible to eliminate the problem that the coating liquid is removed by the cleaning liquid for cleaning the optometric lens with the knob before the operation to be applied, or that the liquid is contaminated with the dissolved paint.

  In addition, when displaying information on the lens part by the adhesion of the paint to the knob part, the part displaying the information of the knob part may be a flat surface, and the information may be displayed by the adhesion of the paint on the flat surface, Alternatively, an information display recess may be formed in the knob, and information may be displayed on the knob by attaching a paint to the inside of the information display recess.

  Of these, according to the latter, the paint adheres inside the recess for displaying information, so even if the picking part is picked many times, the picking operation causes the paint to peel off or wear out. Can be prevented more effectively than the former, and therefore the latter is preferably employed.

  In addition, in the case where information is displayed in this way by the paint adhered to the inside of the information display recess formed in the knob, the form of the relationship between the information display recess and the information is arbitrary. In the first example, the information display recess has an area larger than the display area of the information itself, and the information display recess has a convex shape with a shape such as a character or graphic representing information. In the second example, the information display recess is formed in a shape such as a character or a graphic representing information. In the first example, the paint is attached to the inside of the recess for displaying information except for the above-mentioned convex part, so that the periphery is surrounded by the paint and the paint is not attached to itself. Information will be displayed by the said convex part, and in a 2nd example, a coating material will be made to adhere to the whole inside of the recessed part for information displays, and information will be displayed by this coating material itself.

  Of these, according to the second example, the information display recess formed in the knob in the shape of characters or figures representing information is a narrow recess, so that the knob has a large number of times. Even if it is picked, it is possible to more effectively prevent the paint adhering to the inside of the narrow recess from being peeled off or worn out than the first example, and the permanence of the information expressed by the paint can be improved. It is preferable to employ the second example because it can be secured.

  As shown in the first and second examples, when information about the lens unit is displayed on the knob by the paint adhered inside the information display recess, the paint adheres inside the information display recess. In this case, the paint may be applied to the inside of the information display recess in a filled state, and the paint is not applied to the inside of the information display recess in a filled state. It may be attached in a state, or a paint may be disposed in a part of the depth of the recess, and the state of the paint in the information display recess is arbitrary.

  Further, when the information display recess is formed in the knob as described above, and the coating film including at least the hard coat film is applied to the surface of the optometry lens including the knob, the depth dimension of the information display recess D is preferably 0.13 mm ≦ D ≦ 0.5 mm.

  According to this, when the coating operation for applying the coating film including the hard coating film is performed, it is possible to prevent the information display recess from being filled with the coating liquid.

  Moreover, the information by adhesion of the coating material mentioned above may be displayed on one surface of the knob, and information different from this information may be displayed on the other surface of the knob. In this case, unlike the information on the one surface, it is preferable that the other information is displayed not by the adhesion of the paint but by the convex portion and / or the concave portion formed on the other surface. .

  According to this, even if the knob part is formed of the same transparent plastic material as the lens part, the other information is expressed by the convex part and / or the concave part on the other surface of the knob part and expressed by the adhesion of the paint. Therefore, when the information displayed on the one surface of the knob is read due to the adhesion of the paint, the other information displayed on the other surface of the knob does not get in the way.

  The other information displayed on the other surface of the knob may be information on the lens part of the plastic optometry lens, or may be made of plastic, such as the name of the manufacturer of the plastic optometry lens. Information that is not directly related to the lens unit of the optometric lens, or has little or no relationship with the lens unit may be used.

  In this way, another information is displayed on the other surface of the knob by the convex part and / or the concave part when the plastic optometry lens is manufactured by the injection molding method. Thereby, it can form simultaneously with shaping | molding of a lens part and a knob | pick part.

  Further, when the plastic optometry lens with a knob according to the present invention is a lens in which a mark indicating the direction of the horizontal reference line is displayed on the outer periphery of the lens unit, this mark is attached to the outer periphery of the lens unit. It is good also as a mark displayed by the paint adhering to a part.

  According to this, since the mark indicating the direction of the horizontal reference line is displayed by the adhesion of the paint, in this case as well, this mark can be displayed clearly and the mark can be displayed over a long period of time. .

  In this case as well, the outer peripheral portion of the lens portion for displaying the mark may be a flat surface, and the paint for displaying the mark may be attached to the flat surface, or the mark may be displayed on the outer peripheral portion of the lens portion. A mark indicating the direction of the horizontal reference line may be displayed by forming a concave portion and attaching a paint inside the concave portion for displaying a mark.

  Among these, according to the latter, since the paint adheres to the inside of the mark display recess, even if the plastic optometry lens is used repeatedly, the paint is more effectively prevented from being peeled off or worn out than the former. And the permanence of the mark can be ensured.

  In addition, the application of paint to the inside of the mark display recess may be to fill the entire interior of the mark display recess, or to fill the entire interior of the mark display recess. Instead, it may be applied in the state where paint is applied to the inner surface of the mark display recess, or the paint may be disposed at a part of the internal depth of the mark display recess. The state of the paint is arbitrary.

  The plastic ophthalmic lens with a knob according to the present invention can be manufactured by an injection molding method. In this manufacturing method, the lens part and the knob are formed at the same time. It is preferable that the concave portion for forming is also formed simultaneously with the molding of the lens portion and the knob portion by a mold apparatus used in the injection molding method.

  According to this, after the plastic optometry lens is manufactured by the injection molding method, it is not necessary to separately perform an operation for forming the information display recess and the mark display recess, and the number of work steps can be reduced accordingly. Moreover, in order to form the concave part for information display in a knob part simultaneously with shaping | molding of a lens part and a knob part, after manufacturing the plastic optometry lens with a knob part by the injection molding method, the information regarding a lens part in the knob part of this optometry lens Unlike the case where a label on which is displayed is affixed, the possibility of displaying incorrect information on the knob can be eliminated.

  Of course, after manufacturing a plastic optometric lens with a knob by injection molding, the knob is pressed or engraved to form an information display recess or mark display recess in the knob. May be.

  A method for manufacturing a plastic optometric lens with a knob according to the present invention includes a lens part, a knob formed integrally with the lens part on an outer peripheral part of the lens part, and used when the lens part is loaded into a spectacle test frame. An injection molding process for manufacturing a plastic optometry lens formed with an information display recess for displaying information on the lens unit by adhesion of a paint, by an injection molding method. After this injection molding process, a coating process for coating the surface of the optometric lens including the information display recess formed in the knob with a coating film including at least a hard coat film, and after the coating process, the information And an information display step of displaying information relating to the lens unit by attaching a paint to the inside of the display recess. It is.

  According to this manufacturing method, even if the plastic optometric lens is manufactured through a coating process, the information display process for displaying information about the lens part on the knob by adhesion of the paint is a process after this coating process. Therefore, the paint adhering to the knob in the information display process is a liquid used in connection with the coating process, for example, a coating solution for the coating process or a plastic optometry lens with a knob before the coating process is performed. It is possible to eliminate the problem that the liquid is removed by the cleaning liquid for cleaning or is contaminated with the paint from which these liquids are dissolved.

  In addition, the coating process in this manufacturing method is a process for providing a hard coat film on the plastic optometry lens when the antireflection film is not provided on the plastic optometry lens. Is a process for providing a hard coat film and an antireflection film on the plastic optometric lens.

  An apparatus for manufacturing a plastic optometry lens with a knob according to the present invention includes a lens part, a knob formed integrally with the lens part on an outer peripheral part of the lens part, and used when the lens part is loaded into a spectacle test frame. And an information display recess for displaying information about the lens portion by adhesion of paint. It is characterized by having an engraving member formed on the part.

  Since this manufacturing apparatus includes an engraving member that forms an information display recess for displaying information about the lens part by adhesion of the paint in the knob part, when molding the lens part and the knob part by an injection molding method, Simultaneously with the molding of the lens part and the knob part, an information display concave part can be formed in the knob part.

  Further, when the information display recess is formed on one surface of the knob and the convex and / or recess expressing the information different from the information is formed on the other surface of the knob, the manufacturing is performed. In the apparatus, in addition to the above-mentioned stamping member as the first stamping member for forming the recess for displaying information on one surface of the knob, the protrusion and / or the recess are formed on the other surface of the knob. It is preferable to provide the 2nd marking member for doing.

  According to this, since the manufacturing apparatus according to the present invention includes the second stamping member for forming the convex portion and / or the concave portion on the other surface of the knob portion, the lens portion and the knob are formed by an injection molding method. When the portion is molded, the convex portion and / or the concave portion can be formed on the other surface of the knob portion simultaneously with the molding of the lens portion and the knob portion.

  In the above, the above-mentioned paint for displaying information on the lens part on the knob may be any paint. However, in an eyeglass dealer that performs the work of loading a plastic optometry lens into a spectacle test frame, ethanol is added to the optometry lens. In general, it is common to apply chemicals such as neutral detergents and eyeglass cleaners to wipe off the dirt on the optometric lens. Therefore, the paint has solvent resistance (chemical resistance) against these chemicals. Preferably it is. In addition, when the above-mentioned information or mark is displayed by adhering a paint to the inside of the concave portion, it is preferable that the paint has a feeling of flesh and has smoothness.

  An example of a paint satisfying such conditions is a cashew resin paint. This cashew resin paint is a paint using cashew nut shell oil or a similar natural phenol-containing material as a raw material, and looks like lacquer. This cashew resin paint has sufficient solvent resistance to chemicals such as ethanol, neutral detergent, and eyeglass cleaner, has a feeling of flesh and has smoothness. Because of its excellent water resistance, it is suitable as a paint for plastic optometry lenses.

  In addition, when there are a plurality of types of information regarding the lens unit displayed on the knob, the color of the paint may be the same for all of the information, or the color of the paint may be different for each piece of information. Good.

  Further, as described above, when the mark indicating the direction of the horizontal reference line is displayed on the outer peripheral portion of the lens portion by the adhesion of the paint, the color of the paint of the mark and the information on the lens portion are displayed on the knob. The color of the paint for the same may be the same or different.

  According to the present invention, it is possible to clearly see the information about the lens unit displayed on the knob and to display this information on the knob for a long period of time.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. FIG. 1 shows a plastic optometry lens 1 and a spectacle test frame 20 according to the present embodiment. The optometry lens 1 is mounted on the spectacle test frame 20 at a spectacles store, so that the visual acuity of the subject, etc. Used for inspection.

  FIG. 2 is an enlarged view of the plastic optometry lens 1. The optometry lens 1 includes a lens portion 2 that is an optical portion, an edge portion 3 formed on the outer peripheral portion of the lens portion 2, and the edge portion 3. And a knob portion 4 that protrudes in the outer diameter direction of the lens portion 2 and is formed integrally with the lens portion 2 and the edge portion 3. The lens unit 2 is a meniscus lens unit, and includes a distance portion A having an eye point a, a near portion B having an eye point b, and an intermediate between the distance portion A and the near portion B. It is a progressive power lens part having a progressive part C.

  In addition, although this embodiment is embodiment about the case where the lens part 2 is a progressive refractive-power lens part in this way, a lens part is not restricted to this, A single focus lens part and a multifocal lens part A lens portion having no refractive power may be used.

  The optometric lens 1 according to the present embodiment is manufactured by an injection compression molding method described later using a thermoplastic resin such as a PMMA (polymethylmethacrylate) resin or a PC (polycarbonate) resin as a material. 2, the edge 3, and the knob 4 are made of the same plastic material, and are formed simultaneously and integrally by an injection compression molding apparatus.

  The knob 4 is formed at an inclination angle of 45 degrees obliquely upward on either the left or right of the lens 2 depending on whether the optometry lens 1 is for the right eye or the left eye. Thus, the optometry lens 1 is loaded into the spectacle test frame 20 and the spectacle test frame 20 takes out the optometry lens 1.

  Information 5 regarding the lens unit 2 is displayed on one surface 4A of the knob 4, that is, in this embodiment, the surface 4A that is the same side as the convex surface of the lens unit 2 (hereinafter also referred to as the front surface). Yes. In the present embodiment, the information 5 includes a first information unit 5A that represents whether the optometric lens 1 is for the right eye or the left eye, a second information unit 5B that represents the addition of the lens unit 2, and other information. For example, it comprises a third information section 5C representing the lens type.

  3 is a cross-sectional view taken along line S3-S3 of FIG. 2, which is a cross-sectional view of the knob 4 at a location where the information 5 is displayed, and FIG. 4 is a partially enlarged view of FIG. As shown in FIG. 4, a plurality of recesses 6 are formed on the front surface 4A of the knob 4, and these recesses 6 are formed on the front surface 4A in the shape of characters representing the information 5 of FIG. Has been. Each recess 6 is filled with a cashew resin paint 7 colored with a colorant, and information 5 is displayed on the front surface 4A of the knob 4 by the cashew resin paint 7 dried and solidified. That is, the concave portion 6 is an information display concave portion, and the cashew resin paint 7 adheres to the inside of the information display concave portion 6 in a filled state, whereby the information 5 is displayed on the front surface 4A of the knob portion 4.

  As shown in FIG. 5, the cashew resin paint 7 may be attached to the inside of the recess 6 in a state where it is applied to the inner surface of the information display recess 6.

  Further, in this embodiment, the cashew resin paint 7 is attached to the front surface 4A side of the knob portion 4 in this way to display the information 5 on the front surface 4A of the knob portion 4, but the lens portion in the knob portion 4 2 is attached to the surface (hereinafter also referred to as the rear surface) that is the same side as the concave surface of 2 in a state where the cashew resin paint displaying information is reversed, and the information is transmitted to the front surface 4A side through the knob 4. It may be displayed. In this case, a recess in which the recess 6 is inverted is formed on the rear surface of the knob 4, and the cashew resin paint is attached to the inside of the recess as shown in FIG. 4 or FIG.

  In the present embodiment, the cashew resin paint 7 is a cashew resin paint (trade name: # 91) manufactured by Cashew Co., Ltd.

  6 is a cross-sectional view taken along line S6-S6 of FIG. In the edge 3 of the optometry lens 1, recesses 9 are formed at two positions that coincide with the horizontal reference line 8 shown in FIG. 2, and the same color as or different from the cashew resin coating 7 inside these recesses 9. The cashew resin paint 10 colored in color adheres. Therefore, the cashew resin paint 10 displays a mark 11 indicating the direction of the horizontal reference line 8 on the edge 3 of the optometry lens 1, and the recess 9 displays the mark 11 with the cashew resin paint 10. This is a mark display recess.

  The cashew resin coating 10 may be attached inside the recess 9 in a state where the cashew resin coating 10 is filled in the entire interior of the recess 9 as in FIG.

  As described above, the information 5 relating to the lens unit 2 and the mark 11 indicating the direction of the horizontal reference line 8 are displayed by the cashew resin paints 7 and 10, so that the knob 4 and the edge on which the information 5 and the mark 11 are displayed are displayed. Even if the portion 3 is formed of the same transparent plastic material as the lens portion 2, the information 5 and the mark 11 can be clearly seen. In addition, since the information 5 and the mark 11 are more reliably attached to the optometry lens 1 than label sticking, the information 5 and the mark 11 can be displayed on the optometry lens 1 over a long period of time.

  Further, since the information 5 and the mark 11 are displayed by the cashew resin paints 7 and 10 attached to the inside of the recesses 6 and 9 formed in the knob 4 and the edge 3, the information 5 and the mark 11 are displayed on the flat surface. The cashew resin paint can be eliminated or less likely to be peeled off or worn out than the case where the cashew resin paint is attached to the surface of the cashew resin paint. Long durability can be ensured.

  The cashew resin paints 7 and 10 have sufficient solvent resistance against chemicals such as ethanol, neutral detergents, and eyeglass cleaners. These medicines attach the plastic optometry lens 1 to the eyeglass test frame 20. Since it is used in a spectacle store where the work of loading is performed, it is effective as a paint used for the plastic optometry lens 1 handled many times in the spectacle store.

  In the present embodiment, the recess 6 for displaying the information 5 with the cashew resin paint 7 is formed in the knob 4 in the shape of the character expressing the information 5, so that the recess shown in FIG. Although the width dimension W of 6 does not become a large dimension, when the hard coating operation for applying a hard coat film to the entire surface of the optometric lens 1 molded by the injection compression molding method is performed, the inside of the recess 6 is hard coated. It is not completely filled with liquid, and when the cashew resin paint 7 is attached to the inside of the recess 6, the information 5 by the cashew resin paint 7 can be satisfactorily visually confirmed, and the ophthalmic lens 1 will be described later. The stamping member incorporated to form the concave portion 6 in the knob portion 4 in the injection compression molding die apparatus ensures that it is released from the optometry lens 1 which is an injection molded product. Meniwa, depth D of recess 6 is preferably set to 0.13 mm ≦ D ≦ 0.5 mm. In this case, the width dimension W of the recess 6 is preferably 0.3 mm ≦ W ≦ 1 mm.

  FIG. 7 is a longitudinal sectional view showing an injection compression mold apparatus 30 used for molding the injection molded product of the plastic optometry lens 1 described above by the injection compression molding method. This injection compression molding apparatus 30 that can mold a plurality of plastic optometry lenses 1 at the same time has an upper mold 31 and a lower mold 32 that are divided from a parting line PL. is doing.

  The upper mold 31 includes an inner insert member 33, an outer insert member 34 disposed outside the inner insert member 33, and a back insert 35 disposed above the inner insert member 33. The back insert 35 and the inner insert member 33 are joined by a male thread portion 35A of the insert 35. The lower mold 32 includes an inner insert member 36, an outer insert member 37 that is disposed outside the inner insert member 36, and stores the inner insert member 36 in the hole 37 </ b> A, and a lower portion of the inner insert member 36. And a wall thickness adjusting spacer 38 disposed between the inner insert member 36 and the outer insert member 37. The inner insert member 36 and the wall thickness adjusting spacer 38 are formed by bolts or the like (not shown). The outer insert member 37 is coupled.

  The inner insert member 33 of the upper mold 31 and the inner insert member 36 of the lower mold 32 face each other in the vertical direction, and the outer insert member 34 of the upper mold 31 and the outer insert member 37 of the lower mold 32 also face each other in the vertical direction. An insert 31A of the upper die 31 is formed by the inner and outer insert members 33 and 34 of the upper die 31, and an insert 32A of the lower die 32 is formed by the inner and outer insert members 36 and 37 of the lower die 32. These pairs of upper and lower inserts 31A and 32A have the same number as that of the optometry lens 1 to be molded at the same time by the injection compression molding mold apparatus 30, and each set when the upper mold 31 and the lower side 32 are clamped. Cavities 39 are formed between the pair of upper and lower inserts 31A and 32A in FIG. 1, and these cavities 39 include a lens part molding part 39A, an edge part molding part 39B, and a knob part molding part 39C.

  The lens part molding part 39A is formed between the inner insert members 33 and 36 of the upper and lower molds 31 and 32, and the edge part molding part 39B and the knob part molding part 39C are the outer insert members 34 and It is formed between 37. Further, a stamping member 40 is incorporated in a portion of the outer insert member 37 of the lower mold 32 corresponding to the knob forming portion 39C, and the lens portion 2 and the edge portion 3 shown in FIG. When the knob portion 4 is formed, the convex portion formed on the marking member 40 is provided with the information display recess 6 shown in FIGS. 3 to 5 in the knob portion 4. Further, the convex portion for forming the mark display concave portion 9 shown in FIG. 6 is provided on the outer insert member 37 of the lower mold 32.

  In addition, the said convex part of the marking member 40 is formed by carrying out electrical discharge machining of the surface of the marking member 40 in which this convex part is provided.

  In FIG. 7, the upper mold 31 is divided into upper and lower portions from the boundary portion 45 between the mold plate 43 and the mold plate 44, and when the upper mold 31 and the lower mold 32 are clamped, the upper mold 31 is located below the mold plate 43. The portion above the mold plate 44 with respect to this portion can be moved up and down by a clamping cylinder and other cylinders (not shown) by the amount of compression. Since the back insert 35 and the inner insert member 33 of the upper mold 31 are members connected to the template 44, the back insert 35 and the inner insert member 33 move up and down integrally with the template 44.

  When molten resin is injected from the injection nozzle 50 of the injection compression molding apparatus while the upper mold 31 and the lower mold 32 are clamped, the molten resin is sprue 51, runners 52, and gates inside the mold apparatus 30. Each cavity 39 is filled via 53. At this time, the back insert 35 and the inner insert member 33 of the upper die 31 are raised by the amount of compression, and after filling the cavity 39 with the molten resin, the back insert 35 and the inner insert member 33 are lowered, The molten resin that is gradually cooled and solidified by the temperature adjusting fluid flowing through the fluid flow passages 54 of the upper mold 31 and the lower mold 32 is compressed.

  After the injection molded product is formed in the cavity 39 by solidification of the molten resin, the upper mold 31 and the lower mold 32 are opened from the parting line PL, and the injection molded product attached to the upper mold 31 side is the eject cylinder. It is ejected by a pin 58 of an eject plate 57 that is pushed down by a bar 56.

  In this way, a plurality of injection-molded products taken out from the mold apparatus 30 are connected, and each injection-molded product includes the lens portion 2 and the edge portion 3 shown in FIG. A knob part 4 is provided, and the lens part 2, the edge part 3 and the knob part 4 are simultaneously molded in the mold apparatus 30 of FIG. In addition, an information display recess 6 is formed in the knob portion 4 by a stamping member 40, and a mark display recess 9 is formed in the edge 3. These recesses 6 and 9 are also formed in the lens portion 2. When the edge portion 3 and the knob portion 4 are formed by the mold apparatus 30, the lens portion 2, the edge portion 3 and the knob portion 4 are formed at the same time. For this reason, it is not necessary to perform the operation | work for providing these recessed parts 6 and 9 in the pick part 4 and the edge part 3 separately.

  In addition, since the information display recess 6 is formed in the knob 4 at the same time as the molding of the lens 2 and the knob 4, the ophthalmic lens with the knob is manufactured by the injection molding method, and then the knob of the optometry lens is formed. Unlike the case where a label on which information on the lens unit is displayed is pasted, it is possible to eliminate the possibility of displaying incorrect information on the knob 4.

  In addition, the injection molded product in which a plurality is connected as described above is separated for each optometry lens 1, that is, for each injection molded product, before performing the hard coating process shown in FIG. Is done.

  FIG. 8 is a process diagram showing each work process performed on the optometric lens 1 manufactured in the injection molding process 61 after the injection molding process 61 by the mold apparatus 30 described above. Next to the injection molding process 61 is a hard coating process 62 for applying a hard coat film to the entire surface of the optometric lens 1 including the knob part 4. After the appearance inspection process 63 for the hard coat film, the cleaning process 64 is performed. A first antireflection film coating step 65 for providing an antireflection film on one surface of the optometric lens 1 is performed by a vacuum deposition method. And after washing | cleaning the optometry lens 1 by the washing | cleaning process 66, in the 2nd antireflection film coating process 67, the operation | work which provides an antireflection film in the other surface of the optometry lens 1 by a vacuum evaporation method is performed, and an external appearance inspection process At 68, the antireflective coating is inspected.

  Thereafter, in the paint pouring step 69, the cashew resin paint 7, 10 is poured into the information display recess 6 of the knob 4 and the mark display recess 9 of the edge 3, overflowing from the recesses 6, 9. After the excess cashew resin paints 7 and 10 are wiped off with, for example, Silbon paper, the cashew resin paints 7 and 10 remaining and adhered to the recesses 6 and 9 are dried and solidified at room temperature in a natural drying step 70. . In the present embodiment, the time for drying and solidifying was 24 hours. As a result, the information 5 is displayed in the recess 6 of the knob 4 with the cashew resin paint 7, and the mark 11 indicating the direction of the horizontal reference line 8 is displayed with the cashew resin paint 10 in the recess 9 of the edge 3. Will be. In the information display recess 6 and the mark display recess 9, the paint pouring step 69 includes a hard coating step 62 for providing a hard coat film on the surface of the optometric lens 1 and first and second antireflection coatings for providing an antireflection film. Since the film coating steps 65 and 67 are performed, the hard coat film, the antireflection film, and the cashew resin coating are laminated in this order from the surface of the optometric lens 1.

  Next, each plastic optometry lens 1 is packaged in a packaging process 71, and these optometry lenses 1 are shipped to a spectacle store or the like in a shipping process 72.

  Of the respective work steps 61 to 72 shown in FIG. 8, the injection molding step 61 is a step of manufacturing an injection molded product of the plastic optometry lens 1, and includes the hard coating step 62 and the first and second antireflection films. The coating steps 65 and 67 are coating steps for providing a coating film on the molded product, and the paint pouring step 69 and the natural drying step 70 are information display steps for displaying information 5 on the knob 4, and It is also a mark display process for displaying the mark 11 indicating the direction of the horizontal reference line 8 on the part 3.

  In the hard coating step 62, the information display recess 6 described above is formed by gradually lowering the optometric lens 1 held by the immersion working tool from above into the liquid tank in which the hard coating solution is stored. The whole optometry lens 1 including the knob 4 is immersed in the hard coating solution, and after this immersion has been performed for a predetermined time, the immersing tool is raised to raise the optometry lens 1 from the hard coating solution. By heating the lens 1 in a high temperature atmosphere, the film made of the hard coating liquid remaining on the surface of the optometric lens 1 is cured, and thereby a work process for forming a hard coat film on the surface of the optometric lens 1. It is. Since the plastic ophthalmic lens 1 is inferior in scratch resistance as compared with a glass lens, this defect is compensated by a hard coat film.

A hard coating solution containing an organosilicon compound represented by the following general formula and / or a hydrolyzate thereof is useful.
R ¹ _a R ² _b Si (OR ³ ) _4-ab
(Here, R ¹ and R ² are each alkyl group, alkenyl group, annealing group, or hydrocarbon group having a halogen group, glycidoxy group, epoxy group, amino group, mercapto group, methacryloxy group or cyano group, R ³⁾ Is an alkyl group having 1 to 8 carbon atoms, an alkoxyalkyl group, an acyl group, a phenyl group or an allylalkyl group, and _a and _b are 0 or 1.)
Specific examples include methyl silicate, ethyl silicate, methyl methoxy silane, ethyl methoxy silane, and γ-glycidoxy silane. These organosilicon compounds may be used alone or in combination of two or more. This coating treatment liquid includes a curing agent (for example, a metal chelate compound such as aluminum), a fine particle (preferably colloidal) metal oxide (for example, silica, titanium, zircon, tin, tungsten, cerium, aluminum) or its A composite metal oxide or the like can also be added. And regarding a viscosity, 3CP (centipoise)-25CP can be used preferably in the said coating liquid composition, Most preferably, it is 8CP-15CP.

  In the present embodiment, as the hard coating liquid, γ-glycidoxypropyltrimethoxysilane was used as the organosilicon compound, aluminum acetylacetonate was used as the curing agent, and colloidal silica was used as the particulate inorganic substance, and the viscosity was 10 CP.

  As described above, in the present embodiment, the work of pouring the cashew resin coatings 7 and 10 into the concave portions 6 and 9 of the knob 4 and the edge 3 includes the hard coating step 62 of providing a hard coat film on the surface of the optometric lens 1. Since the first and second antireflection film coating steps 65 and 67 for providing the antireflection film are performed, the operation of pouring the cashew resin coatings 7 and 10 into the recesses 6 and 9 is performed in these steps 62, 65, Unlike the case performed before 67, the cashew resin paint is removed from the recesses 6 and 9 by the hard coating liquid in which the optometry lens 1 is immersed in the hard coating process 62, or the hard coating liquid is dissolved out. And the cashew resin paint in the cleaning steps 64 and 66 before the first and second antireflection coating steps 65 and 67. Or've taken from the recess 6 and 9, it is possible to eliminate that or contaminated with cashew resin paint cleaning solution began to melt.

  In addition, since it takes time to dry the cashew resin paints 7 and 10 naturally in the recesses 6 and 9, the step 69 of pouring the cashew resin paints 7 and 10 into the recesses 6 and 9 as described above is performed by hard coating. By setting the process after the process 62 and the first and second antireflection film coating processes 65 and 67 are completed, the pouring process 69 does not affect other processes, and the entire work is efficiently performed. Will be able to do it.

  FIG. 9 shows a plastic optometry lens 1 ′ according to another embodiment. As with the optometry lens 1 of the embodiment of FIG. 2, information 5 regarding the lens unit 2 is displayed on the front surface 4 </ b> A which is one surface of the optometry lens 1 ′. Information 5 ′ different from this information 5 is displayed on the rear surface 4B (the surface on the back side of the knob 4 in FIG. 9), which is the other surface. This other information 5 'is, for example, the company name or product name of the manufacturer of the optometric lens 1'. 10 is a cross-sectional view taken along line S10-S10 in FIG. 9. As shown in FIG. 10, the information 5 ′ is expressed by the convex portion 12 formed on the other surface 4B of the knob portion 4. As shown in FIG. ing.

  Thus, when displaying information on both sides of the knob 4, if the information on both sides is displayed by the cashew resin paint adhering to the inside of the recess, like the information 5, the knob 4 is the same as the lens 2. Since it is formed of a transparent plastic material, when the information displayed on the front surface 4A is visually recognized from the front surface 4A side of the knob 4, the information displayed on the rear surface 4B can be clearly seen, Although this information is in the way of visually recognizing information displayed on the front surface 4A, such a problem can be solved by setting the information 5 ′ displayed on the rear surface 4B as the convex portion 12.

  The information 5 ′ may be expressed as a concave portion, or may be expressed as both a convex portion and a concave portion.

  In FIG. 11, information 5 is displayed on the front surface 4A of the knob 4 with cashew resin paint 7 adhered to the inside of the recess 6, and the rear surface 4B of the knob 4 is provided with a protrusion and An injection compression mold apparatus 30 ′ used for manufacturing a plastic optometry lens 1 ′ displaying information 5 ′ with recesses is shown.

  In order to form the recess 6 in the front surface 4A of the picked portion 4 of the molded product, the stamping member 40 shown in FIG. 7 is also incorporated in the mold device 30 ′, and the stamping member 40 becomes the first stamping member. ing. In the mold apparatus 30 ′, a second stamping member 41 is incorporated so as to face the first stamping member 40 in the vertical direction, and is formed on the second stamping member 41 disposed on the outer insert member 34 of the upper mold 31. By the recessed portions and / or protruding portions thus formed, the protruding portions and / or recessed portions expressing the information 5 ′ are formed on the rear surface 4B of the knob portion 4.

  This convex part and / or concave part expressing the information 5 ′ is also formed at the same time when the lens part 2, the edge part 3 and the knob part 4 are molded by the mold apparatus 30 ′. There is no need to separately perform an operation for providing a convex part and / or a concave part in the manufactured molded article.

  In the above description, the paint for the information 5 provided on the front surface 4A of the knob 4 is painted on the rear surface 4B, or the paint for the information 5 provided on the front 4A of the knob 4 is. The information 5 on the front surface 4A may be made easier to see by pasting colored sheets of different colors on the rear surface 4B. In this case, even if the back surface 4B is painted or a colored sheet is removed, the information 5 displayed on the front surface 4A is not affected, and there is a problem in identifying each optometry lens 1. Does not occur.

  In the above-described embodiment, the plastic optometry lens 1 is molded by the injection compression molding method. However, the plastic optometry lens according to the present invention enlarges the cavity when the molten resin is filled. Alternatively, the molten resin after filling the cavity may be molded by a normal injection molding method that does not pressurize and compress the molten resin.

  The present invention can be used to display information about a lens portion on a knob portion of a plastic optometry lens.

It is a figure which shows the plastic optometry lens which concerns on one Embodiment of this invention, and the spectacles test frame with which this optometry lens is loaded. It is an enlarged view of the plastic optometry lens shown in FIG. It is the S3-S3 sectional view taken on the line of FIG. FIG. 4 is a partially enlarged view of FIG. 3. It is a figure similar to FIG. 4 which shows the case where the cashew resin coating material has adhered to the inside of the information display recessed part formed in the knob | pick part in the form different from FIG. FIG. 3 is a cross-sectional view taken along line S6-S6 of FIG. It is a longitudinal cross-sectional view which shows the injection compression molding die apparatus for manufacturing the injection molded product of the plastic optometry lens shown by FIG. It is process drawing which shows each work process implemented with respect to an injection molded product after the injection molding process by the type | mold apparatus of FIG. It is a figure similar to FIG. 2 which shows the plastic optometry lens which concerns on another embodiment. FIG. 10 is a sectional view taken along line S10-S10 in FIG. It is a longitudinal cross-sectional view which shows the injection compression molding apparatus used in order to manufacture the injection molded product of the plastic optometry lens which concerns on embodiment of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 'Plastic optometry lens 2 Lens part 3 Edge part formed in the outer peripheral part of a lens part 4 Knob part 4A Front surface which is one side of a pick part 4B Rear surface which is the other surface of a pick part 5 Lens part Information 5 'Other information 6 Information display recess 7, 10 Cashew resin paint 8 Horizontal reference line 9 Mark display recess 11 Mark indicating the direction of the horizontal reference line 12 Convex portion expressing other information 20 Eyeglass test frame 30, 30 'Injection compression molding die device 39 Cavity 40 Stamping member (first stamping member)
41 Second stamping member 61 Injection molding process which is a process for producing an injection molded product of a plastic optometric lens 62 Hard coating process which is a coating process for providing a coating film on the injection molded product 65, 67 An anti-reflection film is provided on the injection molded product First and second antireflection film coating processes 69 and 70, which are coating processes to be provided 69, 70 A paint pouring process and a natural drying process, which are information display processes for displaying information about the lens part on the knob

Claims (10)

A lens part, and a knob part that protrudes from the outer peripheral part of the lens part and is formed integrally with the lens part, and is picked when the lens part is loaded into a spectacle test frame, and the knob part relates to the lens part. In a plastic optometry lens with a knob that displays information,
The information is displayed by the paint adhering to the knob, and the knob is formed with an information display recess provided in a shape that expresses the information. It is done inside the recess for displaying information,
A mark indicating the direction of a horizontal reference line is displayed on the outer peripheral portion of the lens portion, and this mark is a mark displayed by the paint adhering to the outer peripheral portion, and the outer peripheral portion of the lens portion. Is formed with a mark display recess, and the mark is displayed on the outer peripheral portion of the lens portion by attaching the paint inside the mark display recess.
The information is displayed on one surface of the knob portion formed of the same transparent plastic material as the lens portion, and information other than the information is displayed on the other surface of the knob portion. A plastic ophthalmic lens with a knob, which is expressed by a convex part and / or a concave part formed on a surface. A lens part, and a knob part that protrudes from the outer peripheral part of the lens part and is formed integrally with the lens part, and is picked when the lens part is loaded into a spectacle test frame, and the knob part relates to the lens part. In a plastic optometry lens with a knob that displays information,
The information is displayed by the paint adhering to the knob, and the knob is formed with an information display recess provided in a shape that expresses the information. It is done inside the recess for displaying information,
A mark indicating the direction of a horizontal reference line is displayed on the outer peripheral portion of the lens portion, and this mark is a mark displayed by the paint adhering to the outer peripheral portion, and the outer peripheral portion of the lens portion. Is formed with a mark display recess, and the mark is displayed on the outer peripheral portion of the lens portion by attaching the paint inside the mark display recess.
The information is displayed on one surface of the knob portion formed of the same transparent plastic material as the lens portion, and the other surface of the knob portion has a color different from that of the paint for the information. A plastic optometry lens with a knob, characterized by the fact that it is painted . A lens part, and a knob part that protrudes from the outer peripheral part of the lens part and is formed integrally with the lens part, and is picked when the lens part is loaded into a spectacle test frame, and the knob part relates to the lens part. In a plastic optometry lens with a knob that displays information,
The information is displayed by the paint adhering to the knob, and the knob is formed with an information display recess provided in a shape that expresses the information. It is done inside the recess for displaying information,
A mark indicating the direction of a horizontal reference line is displayed on the outer peripheral portion of the lens portion, and this mark is a mark displayed by the paint adhering to the outer peripheral portion, and the outer peripheral portion of the lens portion. Is formed with a mark display recess, and the mark is displayed on the outer peripheral portion of the lens portion by attaching the paint inside the mark display recess.
The information is displayed on one surface of the knob portion formed of the same transparent plastic material as the lens portion, and the other surface of the knob portion has a color different from that of the paint for the information. The colored sheet is affixed The plastic optometric lens with a knob according to any one of claims 1 to 3 , wherein a coating film including at least a hard coat film is applied to a surface of the optometric lens including the knob and the outer periphery of the lens unit. A plastic ophthalmic lens with a knob is characterized in that the coating is adhered on the coating film. 5. The plastic optometric lens with a knob according to claim 1 , wherein a depth D of the recess for displaying information is 0.13 mm ≦ D ≦ 0.5 mm. Plastic optometry lens. The plastic optometric lens with a knob according to any one of claims 1 to 5 , wherein the concave portion for displaying information and the concave portion for displaying mark are formed when the lens portion and the knob are molded. A plastic optometry lens with a knob, which is formed at the same time. The plastic optometry lens with a knob according to any one of claims 1 to 6 , wherein the paint is a cashew resin paint. A lens part, and a knob part formed integrally with the lens part on the outer peripheral part of the lens part and for gripping the lens part when the lens part is loaded into a spectacle test frame. An information display recess for displaying information relating to the lens portion is formed in a shape that expresses the information, and a mark indicating the direction of a horizontal reference line is attached to the outer peripheral portion of the lens portion due to adhesion of paint. An injection molding process for manufacturing a plastic optometry lens in which a mark display recess for displaying is formed by an injection molding method;
After this injection molding step, at least the surface of the optometric lens including the information display recess formed in the knob and the mark display recess formed in the outer periphery of the lens includes at least a hard coat film. A coating process for coating with a coating film;
After the coating step, a display step for displaying the information on the lens portion and the mark indicating the direction of the horizontal reference line by applying paint inside the concave portion for displaying information and the concave portion for displaying mark ,
The includes,
In the injection molding step, the information display concave portion for displaying information on the lens portion is formed on one surface of the knob portion formed of the same transparent plastic material as the lens portion. A method for producing a plastic ophthalmic lens with a knob , wherein a convex part and / or a concave part for expressing information different from the information is formed on the other surface of the knob. A lens part, and a knob part formed integrally with the lens part on the outer peripheral part of the lens part and for gripping the lens part when the lens part is loaded into a spectacle test frame. An information display recess for displaying information relating to the lens portion is formed in a shape that expresses the information, and a mark indicating the direction of a horizontal reference line is attached to the outer peripheral portion of the lens portion due to adhesion of paint. An injection molding process for manufacturing a plastic optometry lens in which a mark display recess for displaying is formed by an injection molding method;
After this injection molding step, at least the surface of the optometric lens including the information display recess formed in the knob and the mark display recess formed in the outer periphery of the lens includes at least a hard coat film. A coating process for coating with a coating film;
After the coating step, a display step for displaying the information on the lens portion and the mark indicating the direction of the horizontal reference line by applying paint inside the concave portion for displaying information and the concave portion for displaying mark ,
The includes,
In the display step, the information is displayed on one surface of the knob portion formed of the same transparent plastic material as the lens portion, and on the other surface of the knob portion, the information is displayed on the other surface. A method for producing a plastic optometric lens with a knob , wherein the coating is performed in a color different from that of the paint . A lens part, and a knob part formed integrally with the lens part on the outer peripheral part of the lens part and for gripping the lens part when the lens part is loaded into a spectacle test frame. An information display recess for displaying information relating to the lens portion is formed in a shape that expresses the information, and a mark indicating the direction of a horizontal reference line is attached to the outer peripheral portion of the lens portion due to adhesion of paint. An injection molding process for manufacturing a plastic optometry lens in which a mark display recess for displaying is formed by an injection molding method;
After this injection molding step, at least the surface of the optometric lens including the information display recess formed in the knob and the mark display recess formed in the outer periphery of the lens includes at least a hard coat film. A coating process for coating with a coating film;
After the coating step, a display step for displaying the information on the lens portion and the mark indicating the direction of the horizontal reference line by applying paint inside the concave portion for displaying information and the concave portion for displaying mark ,
The includes,
In the display step, the information is displayed on one surface of the knob portion formed of the same transparent plastic material as the lens portion, and on the other surface of the knob portion, the information is displayed on the other surface. A method for producing a plastic optometry lens with a knob , wherein a colored sheet having a color different from that of the paint is applied .

Images