JP3128185B2 - Layout aid for processing adjustment of eyeglasses - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a layout aid for eyeglass processing adjustment, and more particularly to a layout aid suitable for drawing a datum line on a demo lens, used for eyeglass processing adjustment.

[0002]

2. Description of the Related Art When a spectacle frame and an unprocessed spectacle lens are selected and the spectacle lens is attached to the spectacle frame, it is necessary to process and adjust the spectacles. The processing adjustment of spectacles is an operation of processing spectacle lenses in consideration of the position of the pupil of the wearer in the spectacle frame and the shape of the lens frame, and inserting the processed spectacle lens into the lens frame. The work of this processing adjustment consists of selecting the unprocessed lens, making the mark on the lens surface, making the lens, setting the centering point (layout operation), lens cutting, lens framing, accuracy inspection and appearance inspection Consists of Adjustment of eyeglass processing must be performed carefully because it affects the finishing accuracy of the eyeglasses and determines the value of the eyeglasses.

[0003] In the step of manufacturing the lens shape in the processing adjustment of the eyeglasses, finally, a template formed corresponding to the lens frame of the eyeglass frame, that is, a temporary lens (hereinafter referred to as a demo lens).
It is necessary to draw a horizontal reference line, that is, a datum line, on the demo lens while the lens is attached to the lens frame. The datum line is a horizontal line passing between the highest point (upper end position) and the lowest point (lower end position) of the lens. Conventionally, a spectacle frame with a demo lens is placed on a special chart, and the demo lens is placed so that the upper and lower positions of the demo lens are located at the same numerical value on the scale drawn on the special chart. The datum line was drawn on the demo lens based on the datum line drawn at the center position.

[0004]

According to the conventional datum line drawing method, experience and intuition are required, the work is complicated, and it is difficult to draw the datum line accurately. Was. When the lens frame or the demo lens has a curved surface, it is more difficult to draw a datum line accurately.

In particular, in a special chart, a scale is displayed in two dimensions, and it is necessary to arrange a three-dimensional eyeglass frame on the scale to perform positioning, so that positioning can be performed accurately. Did not. Also, for example, when there is a lens frame on the upper side and no lens frame on the lower side,
The spectacle frames arranged on the chart are blurred, and it is difficult to correctly determine the installation position on the chart, and there is a problem that alignment is difficult.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a layout aid for eyeglass processing adjustment which can draw a datum line on a demo lens with a simple operation and accurately. .

[0007]

According to the present invention, there is provided a layout aid for processing adjustment of spectacles according to the present invention, which comprises a table for mounting spectacles having a demo lens, and a scale portion displayed on the spectacle mounting surface of the table. The scale section consisting of a horizontal reference line and an upper end measurement horizontal line group and a lower end measurement horizontal line group symmetrically arranged around the horizontal reference line on both sides of the horizontal reference line, and is placed on the glasses placement surface. And a holding mechanism for holding the demo lens so as not to move in a direction perpendicular to the horizontal reference line, so that the datum line can be drawn on the demo lens using the horizontal reference line of the scale.

[0008] In the above-mentioned configuration, preferably, another stand is provided which is relatively movable in a sliding manner by a double structure with respect to the stand, and the holding mechanism is attached to the other stand. To be movable in a direction orthogonal to the horizontal reference line.

In the above configuration, preferably, there is provided an adjusting section for adjusting a relative position between the table and another table.

[0010]

According to the present invention, when the spectacles provided with the demo lens are placed on the table and the demo lens is held on the table by the holding mechanism,
The position of the demo lens can be determined and measured by the scale displayed on the surface of the table corresponding to the mounting position of the demo lens, and a datum line is drawn on the demo lens using the horizontal reference line with this measurement. It becomes possible.

When the holding mechanism for holding the spectacle frame is moved in a direction perpendicular to the horizontal reference line by moving another slide-type base with respect to the base,
The demo lens can be moved in the direction perpendicular to the horizontal reference line with respect to the graduation portion, whereby the upper and lower ends of the demo lens can be accurately aligned with the same numerical value in the upper and lower horizontal lines. When you do
The position of the horizontal reference line at that time is the position of the datum line, and the datum line can be accurately drawn on the demo lens.

[0012] The relative positional relationship between the table and another table can be finely adjusted by using the adjusting section, and the alignment between the scale section and the left and right demo lenses can be accurately performed.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an external perspective view showing a representative embodiment of a layout assisting tool according to the present invention, FIG. 2 is a plan view of the layout assisting tool, and FIG. 3 is a bottom view thereof.

The layout aid includes a main body having a function of mounting a spectacle frame having left and right demo lenses on which datum lines are drawn, and a holding mechanism for holding the spectacle frame mounted on the main body. And a scale portion displayed on the main body corresponding to the mounting position of the demo lens of the spectacle frame. As will be described later, the scale portion includes a horizontal reference line used for drawing a datum line, an upper end horizontal line group, and a lower end horizontal line group. The holding mechanism holds the spectacle frame so that the left and right demo lenses do not move in a direction orthogonal to the reference horizontal line. The configuration will be described below in detail.

The main body 11 is composed of a base 12 and a movable base 13, and the movable base 13 is located below the base 12 and is movably provided on the base 12 in a double-structured and slidable manner. On the upper surface of the base 12, there is provided a mounting portion 14 for mounting a spectacle frame in which demo lenses are attached to left and right lens frames while the lens frames and the demo lenses are laid down. For example, as shown in FIG. 2, the plate material forming the mounting portion 14 has three long holes 15 extending downward from the upper edge.
16 and 17 are formed. One end (the upper end in FIG. 2) of these long holes is open, and the other end (the lower end in FIG. 2) is closed. The two intermediate portions 14a between the slots 16 and 17 in the mounting portion 14 have, for example, a plate-like upper end at a position higher than both side portions of the mounting portion 14 as shown in FIG. Has been extended.

In the elongated hole 15 formed at the center position, a holding block 18 is movably arranged in the elongated hole direction. The holding bar 19 is arranged so as to be movable in the long hole direction by using the two long holes 16 and 17 formed on both sides. The movable base 13 has a structure inserted from the upper end of the base 12 into the lower inside of the base 12, and a holding plate 20 is provided at an outer end of the movable base 13. The holding plate 20 of the movable base 13 and the holding bar 19 provided on the mounting portion 14 of the base 12 are arranged in parallel. Further, a slit 20 a for inserting the upper end of the intermediate portion 14 a of the mounting portion 14 is formed in the holding plate 20 of the movable base 13. The holding mechanism described above is constituted by the holding block 18, the holding bar 19, and the holding plate 20.

As shown in FIG. 3, below the mounting surface 14,
The holding block 18 arranged in the long hole 15 is coupled to the holding plate 20 of the movable base 13 via two coil springs 21, and the holding bar 19 arranged in the long holes 16 and 17 is
It is connected to the holding plate 20 via two coil springs 22.

FIG. 2 is a sectional view taken along the line A--A in FIG.
As shown in a cross-sectional view taken along the line B (FIG. 5), the movable base 13 is arranged so as to be substantially in contact with the inner surface of the base 12.
In particular, as shown in FIGS. 4 and 5 and FIG. 6 in which only the main part is enlarged, a position adjusting part 23 having a pinion function, which is rotatably supported, is provided at the center of the lower part of the base 12 to move. A rack 24 is formed at a position corresponding to the position adjustment unit 23 on the upper surface of the table 13. On the surface of the position adjusting portion 23, a large number of convex portions parallel to the axial direction are formed at predetermined intervals. When the position adjuster 23 is rotated in one of the directions based on a rack and pinion mechanism formed between the position adjuster 23 and the rack 24, the movable table 13 is moved to the base 12.
Can be relatively moved with respect to. Therefore, FIG.
Then, when the position adjusting unit 23 is rotated, the movable table 13 can be moved upward or downward, whereby the relative position of the movable table 13 with respect to the base 12 can be finely adjusted.

As shown in FIGS. 1 and 2, the scale display section 2 is provided on the surface of the mounting section 14 of the base 12 at symmetrical left and right positions.
5, 26a and 26b are provided. Scale display 2
The lines 5, 26a and 26b are drawn on the surface of the mounting portion 14 using, for example, various colors. FIG. 7 shows an example of the scale display sections 25, 26a, 26b on the right side in an enlarged and more accurate manner. A chart composed of these scale display sections 25, 26a, 26b is called a datum line chart.

In the datum line chart, reference numeral 25 denotes a scale display unit 25 used for making a mark relating to the distance between pupils of the left and right eyes of the wearer. Datum line 2 below
7) is displayed. Scale display sections 26a, 26b arranged above and below the scale display section 25a
Are arranged at symmetrical positions with the datum line 27 as the center position, and are each composed of, for example, eight equally spaced horizontal lines (horizontal line group). In the horizontal line group, a numerical value (a unit is mm, such as 16, 20, etc.) indicating the distance from the datum line 27 is displayed every other line. In the scale display sections 26a and 26b, a horizontal line on which a numerical value of, for example, "20" is written is 20 mm from the datum line 27.
Have been pulled a distance away. Conversely, the scale display section 2
The datum line 27 is a horizontal line that is equidistant from the horizontal line on which the numerical value “20” of 6a is described and the horizontal line on which the numerical value of “20” is described on the scale display unit 26b. A similar relationship holds for each of the other horizontal lines of the scale display sections 26a and 26b. The scale display section 26a having the above characteristics is a scale used for confirming the upper end position of the inner diameter (or demo lens) of the lens frame on the right side of the spectacle frame arranged on the mounting section 14, and the scale display section 26b is used for the scale display section 26b. This is a scale used to check the lower end position of the inner diameter (or demo lens) of the lens frame.

A datum line chart having the same configuration as above is also shown for the scale display units 25, 26a and 26b provided on the left side of the surface of the mounting unit 14 of the base 12.

Next, a method of using the layout assisting tool having the above configuration will be described.

As shown by the broken lines in FIG. 2, between the holding plate 20 of the movable base 13 and the holding bar 19 provided on the base 12, the spectacle frame 28 provided with the demo lens is mounted on the left and right sides where the demo lens is attached. With the lens frame 28a lying down,
That is, the demo lens is mounted so that the surface of the demo lens faces the surface of the mounting portion 14. In this state, the connecting portions (bridges) 28b of the left and right lens frames 28a of the spectacle frame 28 are pressed from below by the pressing block 18, and the spectacle frame 28 arranged on the mounting portion 14 moves in the lateral direction. To suppress. The holding block 18 comes into contact with the nose pad.
Further, the upper end of each lens frame 28a is
, And its lower end is pressed down by a presser bar 19. In this way, the spectacle frame 28 is connected to the left and right lens frames 2.
8a is placed on the mounting portion 14 of the base 12 while being held by the holding plate 20 and the holding bar 19 so as not to move in the direction orthogonal to the datum line 27.

Next, in a state where the spectacle frame 28 is arranged on the mounting portion 14 of the base 12 as described above, a datum line is drawn on the left and right demonstration lenses. For this work, a datum line chart (scale display units 25, 26a, 26b and datum line 27) drawn on the surface of the mounting unit 14 is used. Since the spectacle frame holding mechanism including the holding plate 20, the holding bar 19, and the holding block 18 is attached to the movable base 13, when the movable base 13 is moved by rotating / adjusting the position adjusting unit 23, the holding plate 20 The presser bar 19 and the like move together. as a result,
The spectacle frame 28 held by the holding plate 20 and the holding bar 19 also moves. The spectacle frame 28 includes the position adjustment unit 23
2 is moved upward or downward in FIG. 2 in a state of being held on the mounting portion 14 according to the rotation direction of. Therefore, the position adjusting unit 23 is appropriately operated so that the upper and lower ends of the inner diameters of the left and right lens frames 28a are respectively displayed on the scale display units 26a and 26a.
so that it is placed at the position of the horizontal line, which is the same value at b
The spectacle frame 28 is moved. When the upper and lower ends of the inner diameters of the left and right lens frames 28a are arranged at the positions of horizontal lines having the same numerical value in the scale display portions 26a and 26b, the position of the datum line 27 in the demo lens at that time is displayed on the demo lens. Is the position of the datum line. Therefore, by drawing a horizontal line on the demo lens along the datum line 27, the position of the datum line on the demo lens can be determined.

Since the upper and lower ends of the inner diameters of the right and left lens frames are substantially the same as the upper and lower ends of the demo lens, it is necessary to determine the position of the datum line on the demo lens using the upper and lower ends of the demo lens as a guide. Can also. Also, instead of having a fully-shaped demo lens on the lens frame, it is possible to simply stretch the film using the lens frame and draw a datum line on the film.
Also in this case, a film having an effect as a temporary lens can be regarded as a demo lens.

In the above embodiment, an example in which the lens frame is formed on the entire periphery of the demo lens has been described. However, the left and right lens frames of the spectacle frame have only upper edges, and the lens is directly in contact therewith. In those with a structure that can be attached,
As described above, the position of the datum line on the demo lens can be determined using the upper end of the portion corresponding to the inner diameter of the lens frame and the lower end of the demo lens. In the case of eyeglasses without a lens frame, the upper and lower ends of the demo lens are used when datum lines are drawn on the demo lens.

In the above embodiment, the base 12 and the holding plate 2
Although the main body 11 is constituted by the movable base 13 to which the spectacle frame holding mechanism including the press bar 19 and the holding bar 19 and the holding block 18 is attached and which can change its position with respect to the base 12, the spectacle frame holding mechanism is moved to an appropriate position. It is also possible to form the main body only with the base 12 attached.

[0028]

As is apparent from the above description, according to the present invention, the spectacles provided with the demo lens are placed on the table, and the demo lens is held by the holding mechanism and arranged on the table. Using the datum line chart shown above, datum lines can be accurately drawn on the left and right demo lenses. In particular, the three-dimensional demo lens can be held by the holding mechanism, and the three-dimensional demo lens can be accurately aligned with the two-dimensional datum line chart.

Further, since the base has a double structure and the base provided with the holding mechanism is movable by a slide type moving mechanism,
The position of the demo lens with respect to the datum line chart can be appropriately adjusted, and the form and structure can cope with various frame frames and demo lenses.The inner and inner positions of the lens frame and the positions of the upper and lower ends corresponding to the demo lens are indicated on the datum line chart. The position of the datum line can be accurately determined on the demo lens.

Since the change in the position of the moving table can be adjusted by the adjustment unit of the rotary type, fine adjustment is possible, and accurate positioning between the datum line chart and the demo lens can be performed.

Furthermore, the datum line can be accurately drawn on the demo lens with a simple operation using an inexpensive tool. In particular, even when the lens frame or the demo lens has a curved surface shape, a datum line can be accurately drawn.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a layout aid according to the present invention.

FIG. 2 is a plan view of the layout assisting tool.

FIG. 3 is a bottom view of the layout assistant.

FIG. 4 is a sectional view taken along line AA in FIG. 2;

FIG. 5 is a sectional view taken along line BB in FIG. 2;

FIG. 6 is an enlarged perspective view of a position adjustment unit using a rotating body.

FIG. 7 is a diagram illustrating an example of a scale display unit (datum line chart).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Main body 12 Base 13 Moving stand 14 Mounting part 15,16,17 Elongated hole 18 Holding block 19 Holding bar 20 Holding plate 23 Position adjusting part 24 Rack

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G02C 13/00

Claims (3)

(57) [Claims] A pedestal for mounting spectacles provided with a demo lens, a scale portion displayed on the spectacle mounting surface of the pedestal, and a horizontal reference line and the horizontal reference line on both sides of the horizontal reference line. The graduation portion, which is composed of an upper end measurement horizontal line group and a lower end measurement horizontal line group symmetrically arranged at the center, and does not move the demo lens placed on the eyeglass arrangement surface in a direction orthogonal to the horizontal reference line. And a holding mechanism for holding the datum line, and drawing a datum line on the demo lens using the horizontal reference line of the scale section. 2. A stand which is relatively movable in a sliding manner by a double structure with respect to the stand, and the holding mechanism is attached to the other stand, and the holding mechanism is arranged horizontally with respect to the scale. 2. The layout aid for processing adjustment of eyeglasses according to claim 1, wherein the layout assisting tool is provided so as to be movable in a direction orthogonal to the reference line. 3. The eyeglass processing adjustment aid according to claim 2, further comprising an adjusting unit for adjusting a relative position between the table and the other table.