JPH01270022A - Production of spectacles - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing eyeglasses that can quickly manufacture eyeglasses that suit the eyeglass wearer's preferences (including color).

(Prior Art) Generally, when a customer makes eyeglasses, he or she selects the frames and lenses of his/her preference.

In this case, the customer often wants to select a lens frame that suits him/her from several existing lens frames (glass frames) available at the glasses store, or from existing catalogs even if the store does not currently have them. but.

In the original state, users (customers) had no choice but to choose from among the products currently available from manufacturers.

Further, as methods for fixing lenses to lens frames in conventional eyeglasses, there are a lens fitting and fixing method in which the lenses are fitted and fixed to the glasses frame, a lens hanging fixing method in which the lenses are hung on the glasses frame with a wire, and the like.

In this lens fitting and fixing method, a V groove (bevel groove) extending in the circumferential direction is formed on the inner periphery of the lens frame, and a tapered bevel protrusion (mountain part) is formed on the peripheral edge of the lens. This bevel protrusion is fitted into the V-groove. Further, in the lens hanging and fixing method, a wire groove extending in the circumferential direction is formed on the circumferential surface of the lens, and the lens is fixed to the eyeglass frame with a wire fitted along the wire groove.

However, when machining the bevel projections and wire grooves used in this fixing method, it is necessary to pay close attention to the body of the lens, and only by paying close attention to this can the lens be properly fixed to the lens frame.

In addition, such lenses are usually formed by roughly grinding a circular lens material by copying with a template, and then finish grinding using the template. As a result, the price of the glasses increases because finishing after rough grinding using a pattern plate requires advanced technology.

In addition, the lens shape can be directly automatically processed using an NC processing machine without a template, but this processing requires high precision, so it is best to use a high-end machine such as an NC processing machine to process the lens shape with high precision. , the price of glasses will increase. Note that the processing accuracy for attaching such a lens to a lens frame is approximately ±0.02 inch.

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

However, in this case, the customer (wearer) modifies the shape of an existing item or creates a face shape based on a figure created from scratch to fit his or her face, and does not attach glasses-wearing parts to it. , the user simply selected glasses in the same manner as described above.

(Problem to be Solved by the Invention) In this way, conventionally, customers have been able to buy their own lenses from several existing lens frames (glasses frames) in an eyeglass store, or from existing catalogues, etc. even if they are not currently in the store. We choose a lens frame that fits, but the shape of the lens does not necessarily match the customer's wishes.

There were times when I was not satisfied. Furthermore, the above-described method has a problem in that it takes a long time to manufacture the glasses from when they are ordered until they are completed, that is, a long waiting time for the customer.

Therefore, the present invention enables the glasses wearer (customer) to create glasses with the desired color and lens shape by specifying the desired color and lens shape.
It is an object of the present invention to provide a method for manufacturing glasses that can shorten manufacturing time.

(Means for Solving the Problems) In order to achieve this object, the present invention observes and photographs the front of the face of a glasses wearer wearing selected glasses using an appearance observation means to obtain a stratiform surface image.

Additions and corrections were made to the glasses lenses of the layer pressure surface image by an addition correction means to obtain a corrected eyeglass diagram, and then a lens shape line diagram was created by a lens shape line creation means based on the shape data of the corrected lens lines. Thereafter, the plastic lens material is processed into the shape of the lens shape diagram by a processing means based on the data of the lens shape diagram to obtain a modified spectacle lens, and the resulting modified spectacle lens and a spectacle wearing part to which the modified spectacle lens is attached. The method is characterized in that the glasses are fixed in accordance with the shape diagram by a component fixing means.

In addition, the component fixing means is constituted by an upper press die having caulking teeth heated by a heating wire and a press pedestal, and the heated caulking teeth of the upper press die and the heated caulking teeth of the press pedestal are connected to each other. By heating and clamping and fixing the glasses-wearing component and the corrected glasses lens between the teeth, it is possible to reduce distortion of the lens during caulking.

(Example) Embodiments of the present invention will be described below based on the drawings.

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

When a customer (a glasses wearer) specifies the desired color and lens shape to create glasses, first, as shown in Figure 1, customer 1 buys some existing glasses in the glasses store. Select your favorite glasses 2 from (glasses frames) and hang them. Thereafter, the front face of the customer (glass wearer) 1 wearing the selected glasses 2 is observed and photographed using a Polaroid camera (trade name) 3 as an appearance observation means to obtain a photograph 4 as a stratiform surface image.

Next, as shown by the dashed-dotted line in FIG. 2, the eyeglass lens 5 in Photo 4 is modified according to one's taste by making additional corrections using a correction means (not shown) such as marker ink (not shown). A corrected lens diagram 6 having the shape of is drawn. Then, place the tracing paper 7 on top of the photo 4 that has been added and corrected as shown by the two-dot chain line, and copy the corrected lens diagram 6.6 onto 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 shapes of the bridge attachment portion 6a and the temple attachment portion 6b are also copied. FIG. 3 shows the shape and arrangement of the corrected lens diagrams 6, 6 obtained in this manner. Further, as the tracing paper 7, either graph paper for tracing or plain tracing paper may be used.

Then, as shown in FIG. 3, the radius vector from the pupil center 8 to the corrected lens line 6 is measured at every predetermined angle θ, and the distance between the pupil centers 8 and 8 on the photograph is measured. In the 0 diagram to be measured, θ is set large for convenience of explanation, but
Actually make it smaller. In addition, the bridge mounting part 6a,
Distance aL from pupil center 8 of 6a and temple attachment part 6b
Also measure ebL. After this, this A5. L, the actual interpupillary distance of the customer L measured in advance, and the pupil center 8 of the bridge attachment parts 6a, 6a and the temple attachment part 6b.
Measured data such as the distance aLebL from the distance aLebL is input to the CPU10 using the data input means 9 such as a keyboard shown in FIG. Then, as shown in FIG. 5, the plotting machine (drawing device) 11 driven by the CPU 10 creates a full-sized lens shadow line 12a.

12b is drawn on the tracing paper 13 in correspondence with the actual lens arrangement position, and the pupil center 8a,
8b is drawn on tracing paper 13 to create a lens shape diagram 12. At this time, in the lens shape diagram 12,
The bridge attachment portion 12c, temple attachment portion 12d, etc. are also depicted.

On the other hand, a lens processing machine (processing means) such as an NC milling machine is driven by the CPU10, and a circular plastic lens material 14 as shown in FIG. 11L12
A or 12b is processed along the shape, and by this processing, a modified spectacle lens 17 is formed which has a temple attachment part 15 and a bridge attachment part 16 on both sides of the lens as shown in FIGS. 7 to 9. . In addition, in the figure, for the sake of explanation, only one lens was used for explanation, but this processing is done separately for the left and right lenses.Hereafter, the other correction lens will be marked with a "dash" at I7.
Use the one marked with .

In this way, the resulting modified spectacle lens 17.17' (FIG. 12) is attached to the bridge 18 as shown in FIG. 10 and the temple attachment member 19 as shown in FIG. 11. This bridge 16.

As shown in FIG. 10, the central connecting portion 18a and the mounting portions 18b having a U-shaped cross section are integrally provided at both ends of the central connecting portion.
, 18b, and pads 18c, 18c attached to the attachment parts 18b, 18b. Further, as shown in FIG. 11, the temple attachment member 19 has an attachment portion 19a having a U-shaped cross section at one end, and a temple 21 is attached to the other end via a hinge 2o.

In order to assemble and fix the glasses-wearing parts such as the bridge 18 and the temple attachment member 19 and the correction lens 17.17 to each other, first, as shown in FIGS. 12 and 13,
The bridge attachment portion 16.16 of the correction lens 17.17 is fitted into the U-shaped attachment portions 18b, 18b of the bridge 18, and the attachment portion 19a of the temple attachment member 19.19.

19a is the correction lens 17. Temple hinge attachment part 1 of 17
5°15 respectively. At this time, the eyebrow lens frame MF is adhesively fixed to the correction lens 17.17 as shown by the broken line.

On the other hand, the plurality of press holders 23, 24, 25° 26 and upper press molds 27, 28, 29, 30 of the metal fitting press fixing device 22 as a part fixing means shown in FIG. Tables 23, 24, 25, 26 and upper press mold 27, 28.

29.30 is shown in the lens shape diagram 12 in the bridge attachment portions 12c, 12c and the temple attachment portion 12d,
12d and fix it. At this time, the press pedestal 23 degrees 24, 25, 26 and the upper press die 27, 28
, 29, 30 lower caulking teeth 23a, 24a, 2
5a, 26a and upper caulking teeth 27a, 28a, 29
a.

30a (see Figure 15) at the open edge of each mounting section.
Correspond as shown in the figure. Incidentally, FIG. 15 schematically shows the shape of the teeth, etc. On the other hand, the upper press mold 27°28.
29, 30 and press pedestals 23, 24, 25, 26 in advance with heating wires (not shown), press pedestals 23° 24. 25, 26 and upper press molds 27.2g, 2.
9, 30 lower caulking teeth 23a, 24a, 25a
, 26a and upper caulking teeth 27a, 28a,
29a.

30a is heated in advance and in this state, the upper press molds 27, 28, 29, 30 are lowered to form the lower caulking teeth 23a.

24a, 25a, 26a and upper caulking tooth 27a
, 28a, 29a, and 30a, the open edges of each attachment part are heated and caulked at multiple locations as shown in FIG. 17, thereby fixing each attachment part to the correction lens, and at the same time,
Distortion generated inside the lens due to this caulking is minimized. In this way.

Glasses with a color and shape that match customer 1's preferences are completed.

Second Embodiment In the embodiment described above, the user selects glasses from among a plurality of glasses available at an optical store, actually puts them on, takes a photograph of this state, makes additions and corrections to the photograph, and Although an example has been shown in which a lens shape diagram is created and lens processing is performed, the present invention is not necessarily limited to this.

For example, glasses may be selected and processed using a system such as that shown in FIG. 18. The system shown in FIG.
1, a processor 32 controlled by this control unit 31, an image memory 33 and an eyeglass information memory 34 operated by this processor 32, an eyeglass database processing device 35, and lens processing based on data from the processor 32. NC milling machine 36. and a parts press fixing device 37.

Further, this system has a TV camera 38 and a monitor TV 39 as w4 observation photographing means, the output from the TV camera 38 is input to the image memory 33 via the A/D converter 40, and the output from the image memory 33 is D/A converter 41
The signal is input to the monitor TV 39 via. Then, when the face of the customer 1 is photographed by the TV camera 38, the image memory 3
3, image signals from the TV camera 38 are sequentially stored and updated frame by frame, and an image of the face of the customer 1 is displayed on the monitor TV 39 based on the output from the image memory 33.

On the other hand, in such a state, by operating the glasses frame image calling button on the keyboard (not shown) and activating the input/output control device 35a of the glasses database processing device 35 by the processor, the glasses image in the glasses information database processing device 35 is activated. The necessary glasses images stored in the database memory 42 are called up, and the glasses images are sent to the processor 32 and the image memory 33. It is synthesized at the eye position of the face of the monitor TV 39 via the D/A converter 41 and the like. Along with this, by operating a glasses image information call button on a keyboard (not shown), the input/output control device 3 of the glasses database processing device 35 is activated by the processor.
5a, the required eyeglass image information stored in the eyeglass image information database memory 43 of the eyeglass information database processing device 35 is called up.
This glasses image information is sent to the processor 33 and the image memory 33.
．． The image is displayed on the monitor TV 39 via the D/A converter 41 and the like. By repeating such operations, the customer 1 is allowed to select his/her favorite glasses.

Thereafter, the customer 1 makes additional corrections to the eyeglass lenses on the monitor TV 39 using an additional correction means (not shown) such as a light pen, and obtains a corrected lens shadow line.
Enter data such as interpupillary distance using the keyboard.

This additionally corrected data on the glasses and data such as the interpupillary distance of the customer 1 are stored in the glasses information memory.

Next, operate the keyboard to 1. The data on the corrected lenses of the glasses that have been added and corrected in the eyeglass information memory and the data on the interpupillary distance of the customer 1 are called up and input into the CPU 44 of the NC milling machine 36, and the CPU 44 creates a three-dimensional movement table of the NC milling machine 36. Drive device 4
6. The tool rotation motor, three-dimensional tool moving device 47, etc. are operated to process the lens material according to the corrected lens shape diagram.

In addition, by operating the keyboard, data on the corrected lenses of the glasses that have been added and corrected in the glasses information memory and the customer l.
Recall the data such as interpupillary distance and convert this data to C.
A plurality of press pedestals 23 of the metal press fixing device 22 shown in the first embodiment are inputted to the PO 48 and the CPU 48
, 24, 25, 26 and upper press mold 27°2g, 29.
30 are moved by the press cradle drive motor 49 and the upper press die drive motor 50, respectively, and the press cradle 23,
24, 25, 26 and upper press mold 27.2g, 29.3
0 is shown in FIG.
Place and fix at the position corresponding to 12d. At this time, press pedestals 23, 24, 25, 26 and upper press molds 27, 2
8, 29, 30 lower caulking teeth 23a, 24a,
25a, 26a and upper caulking teeth 27a, 28a
.

29a and 30a correspond to the open edges of each mounting portion as shown in FIG. In this state, the preheated upper press molds 27.28, 29.30 are lowered to form the preheated lower caulking teeth 23a, 24a, 25a, 26a.
and upper caulking teeth 27a, 28a, 29a.

At 30a, the open edges of each attachment part are heated and caulked at a plurality of locations as shown in FIG. 17, thereby fixing each attachment part to the correction lens with less distortion. In this way, glasses with a color and shape that match the customer 1's preferences are completed.

In order to add a rim to the lens 17, it is recommended to form a thin groove 17a extending in the circumferential direction on the circumferential surface of the lens 17, as shown in FIG. 19, and to color the thin groove 17a to your liking.゜In addition, in the conventional eye jJ1 manufacturing process, when the lens material is partially short of the glasses frame, the optical center of the lens material is slightly shifted from the position of the wearer's eye, and the lens This compensates for the lack of frame material dimensions, but in this case there is no need to worry about that because a plastic lens with a sufficiently large diameter is used.

If the distance between the bridge attachment parts of the processed lens does not match the bridge, there is no problem if the bridge is attached to the top side of the lens, and this is more common (see Figure 20).

(Effects of the Invention) As described above, the present invention obtains a stratiform surface image by observing and photographing the front of the face of a spectacle wearer wearing one selected pair of glasses using external a & 1 m means, and then Additions and corrections are made to the lenses of the eyeglasses by an additional correction means to obtain a corrected eyeglass diagram.Firstly, a lens shape line diagram is created by a lens shape line creation means based on the shape data of the corrected lens line.
A plastic lens material is processed into the shape of the lens shape diagram using a processing means from the data of the lens shape diagram to obtain a modified spectacle lens, and the modified spectacle lens obtained thereby and a spectacle wearing part to which the modified spectacle lens is attached are manufactured. Since the components are fixed in accordance with the shape diagram by the component fixing means, the glasses wearer (customer) can specify the desired color and lens shape to create glasses, and the manufacturing time can be shortened.

In addition, the component fixing means is constituted by an upper press die having caulking teeth heated by a heating wire and a press pedestal, and the heated caulking teeth of the upper press die and the heated caulking teeth of the press pedestal are connected to each other. By heating and clamping and fixing the glasses-wearing component and the corrected glasses lens between the teeth, it is possible to reduce distortion of the lens during caulking. Moreover, since the production of lens surface molds does not require high precision, it can be done at low cost.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram illustrating a first embodiment of the method for manufacturing glasses according to the present invention. FIG. 2 is an explanatory diagram of the photograph shown in FIG. 1. FIG. 3 is a lens shape diagram traced using the photograph of FIG. 2. FIG. 4 is a schematic explanatory diagram of a drawing creation device that creates a full-size lens shape diagram based on the data of the shape diagram of FIG. 3, etc. FIG. 5 is a full-scale lens shape diagram drawn by the drawing creating device shown in FIG. 4. FIG. 6 is an explanatory diagram showing the processing state of a lens by the lens processing device. FIG. 7 is a plan view of the correction lens processed as shown in FIG. 6. FIGS. 8 and 9 are partially enlarged perspective views of FIG. 7; FIGS. 1O and 11 are perspective views of parts for wearing glasses. FIG. 12 is a front view showing the assembled state of the correction lens shown in FIG. 7 and the spectacle wearing parts shown in FIGS. 10 and 11. FIG. FIG. 13 is a plan view of FIG. 12. FIG. 14 is an explanatory diagram showing the relationship between each component shown in FIG. 12 and the component fixing device. FIG. 15 is an explanatory diagram of the caulking teeth shown in FIG. 14. 16 and 17 are explanatory diagrams of the component fixing device shown in FIG. 15. FIG. 18 is an explanatory diagram showing another embodiment of the present invention. FIG. 19 is a partial perspective view showing another example of a lens manufactured according to the present invention. FIG. 20 is an explanatory diagram showing an example of bridge mounting of glasses of the present invention. ■...Customer 2...Glasses 3...Polaroid camera (exterior observation means) 4...Photograph 5...Glasses lens 6...Correction lens line 7...Tracing paper 12... Lens shadow line 14...Plastic lens material 17...Modified eyeglass lens 22...Metal press fixing device (component fixing means) Fig. 1 ↓ Niko ~ 22 Fig. 2 Fig. 3 Fig. 4 Fig. 6 Figure 12 Figure 13 Figure 14 Figure 18 Figure 19

Claims (2)

[Claims] (1) After observing and photographing the front of the face of the glasses wearer wearing the selected glasses using an appearance observation means to obtain a front face image,
Additions and corrections were made to the lenses of the glasses in the front face image by an addition correction means to obtain a corrected eyeglass diagram, and then a lens shape line diagram was created by a lens shape line creation means based on the shape data of the corrected lens lines. Thereafter, the plastic lens material is processed into the shape of the lens shape diagram by a processing means based on the data of the lens shape diagram to obtain a modified spectacle lens, and the resulting modified spectacle lens and a spectacle wearing part to which the modified spectacle lens is attached. A method for manufacturing eyeglasses, characterized in that the parts are fixed in accordance with the shape diagram by a parts fixing means. (2) The component fixing means is composed of an upper press die provided with caulking teeth heated by a heating wire and a press pedestal, and the heated crimping teeth of the upper press die and the heated crimping teeth of the press pedestal are 2. The method for manufacturing eyeglasses according to claim 1, wherein the eyeglass-wearing component and the corrected eyeglass lens are heated and clamped and fixed between the caulking teeth.