JP2752368B2 - Glasses manufacturing method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spectacle manufacturing method capable of rapidly manufacturing spectacles (including colors) preferred by spectacle wearers.

(Prior Art) Generally, when a customer makes eyeglasses, the user selects and employs his or her favorite frame and lens. In this case, the customer often wants to select a lens frame that suits him from some existing lens frames (glass frames) at an eyeglass store or an existing catalog or the like even if he is not currently at that store. However, in the current situation, users (customers) were constantly choosing from those that existed in the manufacturer.

In addition, as a method of fixing a lens to a lens frame in conventional glasses, there are a lens fitting and fixing method of fitting and fixing a lens to a glass frame, a lens hanging and fixing method of hanging a lens to a glass frame by a wire, and the like. In this lens fitting and fixing method, a V-groove (a bevel groove) extending in the circumferential direction is formed on the inner periphery of the lens frame, and a tapered beveled protrusion (a mountain) is formed on a peripheral portion of the lens. This bevel protrusion is V
It fits into the groove. Further, in the lens suspension fixing method, a wire groove extending in the circumferential direction is formed on the peripheral surface of the lens, and the lens is fixed to the spectacle frame with a wire fitted along the wire groove.

However, it is necessary to pay close attention to the processing of the bevel projections and wire grooves used in such a fixing method, and the lens can be fixed to the lens frame only with such careful attention.

In addition, such a lens is usually formed by roughly grinding a circular lens material by copying using a template, and then finish-grinding using the template. As a result, since the finishing after the rough grinding by the copying process using the template requires a high level of technology, the price of the glasses also increases.

In addition, although direct automatic processing of the lens shape can be performed without a template using an NC processing machine, since this processing requires high precision, if the lens shape is processed with high precision using a high-end machine such as an NC processing machine, Glasses prices increase. The processing accuracy for attaching such a lens to the lens frame is approximately ± 0.
02 mm.

In addition, there are eyeglasses equipped with plastic lenses as low-cost eyeglasses that do not require such processing accuracy.

However, the customer (wearer) does not modify the shape of an existing one that fits his / her face or creates a surface shape based on a graphic created from the beginning, and does not attach eyeglass wearing parts to this. In this case, too, only the selection of the glasses is performed in the same manner as described above.

(Problems to be Solved by the Invention) As described above, conventionally, a customer fits himself from some existing lens frames (glass frames) in an eyeglass store, or an existing catalog or the like even if he is not currently in the store. Although the lens frame is selected, the shape of the lens does not always match the wishes of the customer, and in some cases, it is not satisfactory. In addition, the above-described method has a problem that the production time from ordering the glasses to completion of the glasses is long, that is, the waiting time of the customer is long.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spectacles manufacturing method in which a spectacles wearer (customer) can specify and prepare spectacles of a desired color and lens shape and can shorten a manufacturing time.

(Means for Solving the Problems) In order to achieve this object, the present invention provides a process of obtaining a frontal face image of a spectacles wearer wearing selected eyeglasses, and correcting and correcting a portion of the frontal face image of a spectacle lens. To obtain a corrected spectacle diagram, a process of creating a lens diagram based on the corrected lens diagram, and a process of processing a lens material into the shape of the lens diagram to obtain a corrected spectacle lens And a method for manufacturing glasses.

Further, the present invention is characterized by a method for manufacturing eyeglasses, comprising a step of fixing the corrected eyeglass lens to an eyeglass wearing component based on the lens diagram.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

First Embodiment FIGS. 1 to 17 show a first embodiment of the present invention.

When a customer (glasses wearer) designates and prepares glasses of a desired color and lens shape, first, as shown in FIG. Select the desired glasses 2 from the (glasses frame) and hang it. Thereafter, the front of the face of the customer (glasses wearer) 1 wearing the selected glasses 2 is observed and photographed by a Polaroid camera (trade name) 3 as an appearance observing means, and a photograph 4 as a face front image is obtained.

Next, as shown by a dashed line in FIG. 2, the portion of the spectacle lens 5 of the photograph 4 is modified by a modification device (not shown) such as a magic ink (not shown).
The correction lens diagram 6 having the desired shape is extracted. Then, the tracing paper 7 is placed on the photograph 4 to which the retouching and correction has been added, as shown by a two-dot chain line, and the corrected lens diagrams 6 and 6 are taken on the tracing paper 7. At the same time, the left and right pupil centers 8, 8 of the customer 1 are photographed.
At this time, the bridge mounting portion 6a and the temple mounting portion 6b
The shape of is also taken. FIG. 3 shows the shapes and arrangements of the corrected lens diagrams 6 and 6 obtained in this manner. The tracing paper 7 may be either tracing graph paper or plain tracing paper.

Then, as shown in FIG. 3, the moving radius ρ _i from the pupil center 8 to the position on the correction lens line 6 is measured at every predetermined angle θ, and the distance L between the pupil centers 8, 8 on the photograph is determined. Measure. In the figure, θ is set large for convenience of explanation,
Actually make it smaller. The distance a _i from the pupil center 8 of the bridge mounting portion 6a, 6a and temple mounting portion 6b, b _i is also measured. Thereafter, the [rho _i, L, actual interpupillary distance of the customer 1 measured in advance, and the distance a _i from the pupil center 8 of the bridge mounting portion 6a, 6a and temple mounting portion 6b, b _i, etc. The data input means 9 such as a keyboard shown in FIG.
To the CPU 10. Then, as shown in FIG. 5, the actual size lens shape lines 12a and 12b are placed on the tracing paper 13 by the plotter (drawing device) 11 driven by the CPU 10 at the actual lens arrangement position. A lens diagram 12 is drawn in which the pupil centers 8a and 8b are drawn on the tracing paper 13 while being drawn correspondingly. At this time, the lens mounting diagram 12 also shows the bridge mounting portion 12c and the temple mounting portion 12d.

On the other hand, a lens processing machine (processing means) such as an NC milling machine is driven by the CPU 10, and a circular plastic lens material 14 as shown in FIG. Processing is performed along the shape of the line 12a or 12b, and the temple mounting portion 15 and the bridge mounting portion 16 are provided on both sides of the lens by this processing.
The modified spectacle lens 17 provided as shown in the figure is formed.
Although only one of them is described in the figure for the sake of explanation, this processing is performed separately for the left and right sides. Hereinafter, the other correction lens will be denoted by reference numeral 17 with a “dash”.

In this way, the resulting modified spectacle lenses 17, 17 '(FIG. 12) are connected to the bridge 1 as shown in FIG.
It is attached to a temple attachment member 19 as shown in FIGS. 8 and 11. As shown in FIG. 10, the bridge 18 includes a central connecting portion 18a, mounting portions 18b, 18b integrally provided at both ends of the central connecting portion, and U-shaped cross sections, and mounting portions 18b, 18b. Has pads 18c, 18c attached thereto. As shown in FIG. 11, the temple mounting member 19 has a mounting portion 19a having a U-shaped cross section at one end and a temple 2 at the other end via a hinge 20.
1 is attached.

In order to assemble and fix the eyeglass wearing parts such as the bridge 18 and the temple mounting member 19 and the correction lenses 17 and 17 'to each other, first, as shown in FIGS.
The bridge mounting portions 16, 16 of the correction lenses 17, 17 'are fitted into the U-shaped mounting portions 18b, 18b of 18 and the temple mounting member 1
The fitting portions 19a of the correcting lenses 17, 17 'are fitted to the mounting portions 19a, 19a of the fixing lenses 9, 19, respectively. At this time, the eyebrow lens frame MF is bonded and fixed to the correction lenses 17, 17 'as shown by broken lines.

On the other hand, a plurality of press receiving stands 23, 24, 25, 26 and upper press dies 27, 28, 29, 30 of a metal fitting press fixing device 22 as a part fixing means shown in FIG. Stand23,2
4, 25, 25 and upper press dies 27, 28, 29, 30 are arranged and fixed corresponding to the bridge mounting portions 12c, 12c and the temple mounting portions 12d, 12d of the lens diagram 12 shown in FIG. . At this time, the press receiving bases 23, 24, 25, 26 and the upper press dies 27, 28, 29, 30 have lower caulking teeth 23a, 24a, 25a, 26a and upper caulking teeth 27a, 28a, 29a, 30a.
(See FIG. 15) correspond to the open edges of each mounting portion as shown in FIG. FIG. 15 schematically shows the shape of teeth and the like. On the other hand, a heating wire (not shown) is previously placed inside the upper press dies 27, 28, 29, 30 and the press receiving stands 23, 24, 25, 26, and the press receiving stands 23, 24, 25, 26 and Upper press mold 27,28,2
9,30 lower swaging teeth 23a, 24a, 25a, 26a and upper swaging teeth 27a, 2
8a, 29a, 30a are preheated. In such a state, lower the upper press dies 27, 28, 29, 30 to lower the caulking teeth 23a, 24a, 2
5a, 26a and upper caulking teeth 27a, 28a, 29a, 30a are used to fix the respective mounting portions to the correction lens by heating and caulking the open edges of the respective mounting portions at a plurality of locations as shown in FIG. The distortion generated inside the lens due to the caulking is reduced. In this way, the glasses with the colors and shapes that match the taste of the customer 1 are completed.

<Second Embodiment> In the embodiment described above, the user selects glasses from a plurality of glasses at the eyeglass store, actually wears them, takes a picture in this state, adds corrections to the picture, An example is shown in which a lens shape diagram is created and lens processing is performed, but the present invention is not necessarily limited to this.

For example, glasses may be selected and processed by a system as shown in FIG. The system shown in FIG. 18 includes a control unit 31 operated by a keyboard (not shown).
And a processor controlled by the control unit 31
32, an image memory 33 and an eyeglass information memory 34 operated by the processor 32, an eyeglass database processing device 35, an NC milling machine 36 for processing a lens based on data from the processor 32, and a component press fixing device 37 Having.

In addition, this system uses a TV camera
An output from the TV camera 38 is input to the image memory 33 via the A / D converter 40, and the image memory 33
Is input to the monitor TV 39 via the D / A converter 41. When the face of the customer 1 is photographed by the TV camera 38, the image signal from the TV camera 38 is sequentially stored and updated in the image memory 33 for each frame, and the image memory 33
An image of the face of the customer 1 is displayed on the monitor TV 39 by the output from the monitor 33.

On the other hand, in such a state, the eyeglass frame image call button on the keyboard (not shown) is operated, and the input / output control device 35a of the eyeglass database processing device 35 is operated by the processor 32, whereby the eyeglasses of the eyeglass information database processing device 35 are operated. A necessary one of the eyeglass images stored in the image database memory 42 is called, and the eyeglass image is combined with the eye position of the face of the monitor TV 39 via the processor 32, the image memory 33, the D / A converter 41, and the like. Let it. Also,
Along with this, the eyeglass image information call button on the keyboard (not shown) is operated, and the input / output control device 35a of the eyeglass database processing device 35 is operated by the processor 32, whereby the eyeglass image information database memory of the eyeglass information database processing device 35 is operated. A necessary one of the eyeglass image information stored in 43 is called out, and the eyeglass image information is monitored via the processor 32, the image memory 33, the D / A converter 41, and the like.
Make it appear on TV39. By repeating such operations,
The customer 1 selects his favorite glasses.

Thereafter, the customer 1 is caused to make corrections on the spectacle lens on the monitor TV 39 by a correction correction means (not shown) such as a light pen to obtain a corrected lens shape line. Enter data using the keyboard. The data of the glasses with the correction and the data such as the pupil distance of the customer 1 are stored in the glasses information memory.

Next, the keyboard is operated to call out the data of the corrected lens of the glasses that have been retouched and corrected and the data such as the distance between the pupils of the customer 1 in the glasses information memory 34 and input them to the CPU 44 of the NC milling machine 36. NC milling machine by CPU44
36 three-dimensional moving table drive 45, tool rotation motor 4
6. By operating the three-dimensional tool moving device 47 and the like, the lens material is processed according to the corrected lens diagram.

Further, by operating the keyboard, the data of the corrected lens of the glasses with the correction and the correction added thereto in the glasses information memory 34 and the data such as the distance between the pupils of the customer 1 are called, and this data is input to the CPU 48, and the CPU 48 A plurality of press receiving stands 23, 24, 25, 26 of the metal fitting press fixing device 22 shown in the first embodiment.
And the upper press dies 27, 28, 29, 30 are connected to the press cradle drive motor 49.
And the upper press mold driving motor 50 to move the press cradle 23, 24, 25, 26 and the upper press molds 27, 28, 29, 30 in the same manner as shown in FIG. The bridge mounting portions 12c, 12c and the temple mounting portions 12d, 12d are arranged and fixed at positions corresponding to the twelve bridge mounting portions 12c, 12c. At this time, the press receiving stands 23, 24, 25, 26, the upper press dies 27, 28, 29, 30 and the lower caulking 23a, 24a, 25a, 26a and the upper caulking teeth 27a, 28a, 29a, 30a are attached to each mounting part. Correspond to the open edge as shown in FIG. In this state, the pre-heated upper press molds 27, 28, 29, 30 are lowered, and the pre-heated lower caulking teeth 23a, 24a, 25a, 26a and the upper caulking teeth 27a, 28a, 29a, 30a
By caulking the open edge of each mounting portion at a plurality of locations as shown in FIG. 17, each mounting portion is fixed to the correction lens with less distortion. In this way, the glasses with the colors and shapes that match the taste of the customer 1 are completed. In order to form an edge on the lens 17, as shown in FIG. 19, a narrow groove 17a extending in the circumferential direction may be formed on the peripheral surface of the lens 17, and a desired color may be applied to the narrow groove 17a.

Note that, in the conventional eyeglass manufacturing, when the lens material is partially insufficient than the eyeglass frame, the optical center of the lens material is slightly shifted from the eye position of the wearer, It compensates for the lack of dimensions, but in this case, there is no need to worry about using a plastic lens with a sufficiently large diameter.If the distance between the bridge mounting parts of the processed lens does not match the bridge, There is no problem if a bridge is attached to the upper side of the, which is more common (see Figure 20).

(Descent of the Invention) As described above, according to the present invention, a process of obtaining a frontal face image of a spectacles wearer wearing selected glasses, and correcting eyeglasses by adding and correcting a spectacle lens portion of the frontal face image A process of obtaining a diagram, a process of creating a lens diagram based on the corrected lens diagram, and a process of processing a lens material into the shape of the lens diagram to obtain a corrected spectacle lens. As a result, not only the existing eyeglass frames and lenses in an eyeglass store or a catalog, but also the eyeglass frames and lenses having desired colors can be created, and the manufacturing time can be reduced.

In addition, since the method includes a step of fixing the corrected spectacle lens to the spectacle wearing part based on the lens shape diagram, the spectacle frame and the lens, which are manufactured in a desired color, are fixed instead of the existing spectacle frame and the lens. You can get your favorite glasses.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view for explaining a first embodiment of the eyeglass manufacturing method according to the present invention. FIG. 2 is an explanatory diagram of the photograph shown in FIG. FIG. 3 is a lens shape diagram traced using the photograph of FIG. FIG. 4 is a schematic explanatory diagram of a drawing creating apparatus for creating a full-scale lens shape diagram based on the data of the shape diagram of FIG. 3 and the like. FIG. 5 is a full-scale lens diagram drawn by the drawing creating apparatus of FIG. FIG. 6 is an explanatory diagram showing a lens processing state by the lens processing apparatus. FIG. 7 is a plan view of the correction lens processed as shown in FIG. 8 and 9 are partially enlarged perspective views of FIG. FIG. 10 and FIG. 11 are perspective views of eyeglass wearing parts. FIG. 12 shows the modified lens shown in FIG. 7 and FIGS. 10 and 11
FIG. 4 is a front view showing an assembled state with the eyeglass wearing parts shown in the figure. FIG. 13 is a plan view of FIG. FIG. 14 is an explanatory diagram showing a relationship between each component shown in FIG. 12 and a component fixing device. FIG. 15 is an explanatory diagram of the caulked tooth shown in FIG. 16 and 17 are explanatory views of the component fixing device shown in FIG. FIG. 18 is an explanatory view showing another embodiment of the present invention. FIG. 19 is a partial perspective view showing another example of the lens manufactured according to the present invention. FIG. 20 is an explanatory view showing an example of mounting the bridge of the glasses of the present invention. 1 Customer 2 Glasses 3 Polaroid camera (appearance observation means) 4 Photo 5 Glasses lens 6 Modified lens line 7 Tracing paper 12 Lens shape line 14 Plastic lens Material 17: Modified spectacle lens 18: Bridge (parts for wearing glasses) 19: Temple mounting member (parts for wearing glasses) 22: Metal fitting press fixing device (part fixing means)

Claims (2)

(57) [Claims] A step of obtaining a frontal face image of a spectacles wearer wearing selected eyeglasses; a step of obtaining a corrected spectacle diagram by applying a correction to a portion of the spectacle lens of the frontal face image; A method for manufacturing eyeglasses, comprising: a process of creating a lens diagram based on a diagram; and a process of processing a lens material into the shape of the lens diagram to obtain a corrected spectacle lens. 2. The method according to claim 1, further comprising the step of fixing the corrected spectacle lens to a spectacle wearing component based on the lens diagram.