JPH0546727Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optometric frame used when performing a visual acuity test of an eye subject, and in particular to the structure of its lens holder.

[Prior Art] Various optometry frames have been proposed for use in visual acuity tests, one example of which is known as one disclosed in Japanese Utility Model Application Publication No. 59-166221. . This optometric frame is
As shown in FIG. 8, a pair of left and right annular lens frames 3 each having a lens opening 1 in the center and connected to each other by a laterally expandable central connecting device 2; A pair of left and right annular supporting members 6 each having an opening 4 that aligns the lens opening 1 and fixed to the lens frame 3 at a predetermined interval behind the lens frame 3 via a pair of connecting members 5. and a pair of left and right frame legs 7 foldably attached to both outer sides of the lens frame 3. When testing the dioptric power of a bifocal optometric lens using such an optometry frame, for example, the power of the distance lens section and the power of the near lens section are tested, respectively, among optometry lens sets having various dioptric powers. It is determined by sequentially inserting circular lenses from 1 to 3 into the gap between the lens frame 3 and the support member 6 and finding the optimum power. In addition, as a function of the optometric lens, it is possible to test the mounting feeling by wearing lenses with different optical designs, and it is used in various forms depending on the purpose.

[Problems to be Solved by the Invention] However, the conventional optometry frame having the above configuration had the following problems in the lens holder portion. A connecting member 5 connecting the annular lens frame 3 and the annular support member 6
There is a problem with the strength of the lens holder (especially when the lens holder is made of plastic), and the connecting member 5 tends to deform during use. Optometric lenses with different lens diameters (for example, a combination of 35 mmφ and 40 mmφ) cannot be used together. The structure of the lens holder part is complicated, the number of parts is large, and the cost is high. In addition, metal ones are heavy and make the subject feel depressed, making them unsuitable for long-term examinations. Since the lens is held by the connecting member 5 that connects the annular lens frame 3 and the annular support member 6, the holding force is unstable, and for example, when the axis of astigmatism is aligned and the eye is examined, the astigmatism axis may be It has the problem of being easily misaligned.
It is difficult to clean the groove that holds the optometric lens, which is unhygienic and causes discomfort to the eye test subject.

Therefore, the present invention was devised in view of the above-mentioned conventional problems, and its purpose is to provide a simple structure, stable lens retention, and easy replacement of optometry lenses. It is convenient to align the axis of astigmatism, is lightweight, can withstand long-term eye examinations, has easy lens groove cleaning, and allows multiple eye examination lenses to be used together. The objective of the present invention is to provide a lens holder for frames for

[Means for Solving the Problems] The present invention has been made to achieve the above object, and the first invention is a lens holder attached to an optometry frame that is attached to the head of an eye subject. , a holder body having a lens opening in the center and a slider held on an optometry frame at the upper end; and a lens provided at the bottom of the holder body and having at least one lens groove formed on the inner surface to accommodate the optometry lens. It consists of a holding section.

In the second invention, in the first invention, the holder main body and the lens holding part are formed separately and are separably coupled by an engagement means.

A third invention is that in the first or second invention, the lens groove has at least two different groove diameters.
It is composed of different types of lens grooves.

A fourth invention is that in the first, second or third invention, the lens holder is formed of a resin material.

A fifth invention is that in the first, second, third or fourth invention, the lens aperture is formed into a substantially circular or substantially oval shape.

A sixth invention is that in the third invention, a notch is formed at least at the lower end of the lens groove having a small groove diameter.

[Function] In the present invention, the lens holder having one lens groove has a simple structure, has a stable lens holding force, and facilitates exchanging the optometry lens and aligning the axis of astigmatism. The holder body and the lens holder are separably coupled to each other to facilitate cleaning of the lens groove when separated. The resin lens holder aims to reduce weight. Lens grooves with different groove diameters allow the combined use of optometric lenses with different diameters. The lens aperture allows for the fitting of circular or oval optometric lenses. The notch in the lens holder widens the field of view.

[Example] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

Fig. 1 is a perspective view showing an example of an optometric frame equipped with a lens holder according to the present invention, Fig. 2 is an exploded perspective view of the optometric frame, and Fig. 3 is an enlarged cross-sectional view taken along the - line in Fig. 1. Figure 4 is the − of Figure 1.
FIG. 5 is an enlarged cross-sectional view taken along the - line in FIG. 1, and FIG. 6 is a perspective view of the main parts of the optometry frame. In these figures, the optometric frame, which is designated as a whole by reference numeral 1, includes a lens holder 3 and a nose pad member 4.
The apparatus is provided with a frame 2 which holds a frame 2 and is mounted on the head of the eye to be examined.

The frame frame 2 is made of ABS resin, acetate,
It is composed of two members: a main body 5 integrally molded from an elastic body made of synthetic resin such as cellulose, and a lens holder holding member 6 attached to the front surface of the main body 5. The main body 5 includes a pair of left and right temples 7 and 8 that are in close contact with the temporal region of the subject's eye, and front ends of the temples 7 and 8 are connected to both ends, and the lens holder holding member 6 and two lens holders 3 are connected to each other. It consists of a front mounting 9 that holds the The main body 5 made of resin has the advantage that surface treatment, filling with fillers, etc. can be performed freely. However, as long as it is an elastic body, it may be made of metal instead of resin, and the temples 7 and 8 are not limited to those that are integrally molded.
and the front mounting 9 may be connected by a hinge.

Each of the temples 7, 8 is subjected to bending stress during attachment/detachment operation, and the front mounting 9
A wide bent part 10 is provided near the front end to prevent the hair from concentrating on the connecting part with the hair, and the rear end is linear and gradually decreases in width to reduce the disturbance of the hair during attachment/detachment operations. By extending in this way, it becomes a tapered hairpin shape. Therefore, when the frame 2 is attached to the head, the rear ends of the temples 7 and 8 can be inserted into the hair from the front and placed on the ears.

A guide groove 11 (FIGS. 3 and 6) having a substantially T-shaped cross section and opening downward and on both sides of the frame 2 is formed between the joint surfaces of the lens holder holding member 6 and the front mounting 9. This guide groove 11 holds the lens holder 3 slidably in the left and right direction.

3 to 5 show the mounting structure of the lens holder holding member 6, and the front mounting 9
A plurality of small fitting recesses 12 and projections 13 forming engagement means are provided on the front and lower surfaces of the
The lens holder holding member 6 is removably attached to the front surface of the front mounting 9 by fitting these into the projections 14 and the fitting recesses 15 provided on the back and lower surfaces of the lens holder holding member 6.

Further, a recess 17 is provided at the center of the back surface of the lens holder holding member 6, and is fitted with a protrusion 16 (FIGS. 2 and 6) that projects from the center of the front surface of the front mounting 9. For this reason, guide groove 1
1 is divided at the center of the front mounting 9. The guide groove 11 also allows the lens holder holding member 6 to be attached to the front mounting 9.
When removed, it opens and is easily cleaned.

Note that a scale 18 (FIGS. 1, 2, and 6) is engraved on the front surface of the lens holder holding member 6 to indicate the pupillary distance (PD).

The lens holder 3 is made of a resin material and is integrally or separately formed, and in this embodiment, a split type lens holder formed into two parts is shown.
The configuration will be explained in detail based on FIGS. 1 and 2. The holder main body 3A consists of a substantially semicircular plate-shaped body that is open downward and has an astigmatic axial degree scale 20 displayed on the front surface; A semi-cylindrical lens holding portion 3B is opened to form a lens opening 22 together with the holder main body 3A. Lens aperture 2
2 is formed into a circular shape to match the shape of the optometric lens 26. A rectangular plate portion 23 extending upward is integrally provided at the center of the upper surface of the holder body 3A, and a pair of elastic engagement pieces 24 are integrally provided on both side surfaces of the lower end portion, and further, Plate part 2
A slider 25 which is T-shaped in side view and is slidably inserted and held in the guide groove 11 is integrally provided at the upper end of the slider 3 . The inner surface of the lens holding part 3B has a plurality of lens grooves, for example, three lens grooves 27a, 27b, 27, which accommodate and hold the lower half of the periphery of the optometric lens 26.
c, one holder groove 27d, and groove walls 28 defining these grooves are formed at a predetermined interval in the front-rear direction, and elastic retainers of the holder main body 3A are formed near the rear end of the upper part of both sides. An engagement hole 29, which forms an engagement means together with the mating piece 24, is formed to communicate with the holder groove 27d.

When connecting the holder main body 3A and the lens holding part 3B, the holder main body 3A is inserted into the holder groove 27d of the lens holding part 3B from above by narrowing the distance between the lower ends of the holder main body 3A, and the elastic engagement piece 24 is engaged from inside. By inserting and engaging into the matching hole 29, the holder main body 3A and the lens holding portion 3B can be integrally coupled.

The lens grooves 27a, 27b, 27c are suitable for various optometric lenses (for example, 35φ, 40φ multifocal lenses, etc.)
They are formed with different groove diameters so that they can be used together.

When inspecting distance vision or near vision, the lens groove 27b
An astigmatic optometric lens is inserted into the lens groove 27a or 27c, and a spherical lens is inserted into the lens groove 27a or 27c. When inspecting a bifocal lens (in the case of a bifocal lens), a bifocal or progressive lens (an upper planar lens) is inserted into the lens groove 27a, and a spherical lens is inserted into the lens groove 27b. When inspecting bifocal lenses (in the case of a bifocal lens), a bifocal or progressive multifocal lens (an upper lens) is placed in one of the lens holders 3. By inserting an upper flat lens into the lens groove 27a, it is possible to easily replace lenses with different designs of recent progressive multifocal lenses.
For example, you can choose progressive multifocal lenses (lenses with a wide near vision area, lenses with a wide distance vision area, or lenses with the near vision area and distance vision area of equal size) that suit your lifestyle.

And the lens holder 3 configured in this way
The slider 25 is slidably inserted into the guide groove 11 from the frame, so that the slider 25 is suspended below the front mounting 9, and the appropriate frictional force between the guide groove 11 and the slider 25 causes the pupil to be is stably held in the intermediate position. This lens holder 3
will not be moved unless some external force is applied. In this case, if the guide groove 11 is tilted forward at a medically preferable angle, for example, 10° to 15°, and the lens holder 3 is tilted forward,
Eye examination can be performed in substantially the same state as wearing regular glasses.

After the inspection is completed, the lens grooves 27a to 27c and the holder groove 2 are removed from the guide groove 11 and disassembled, similar to the guide groove 11.
7d can be easily cleaned.

Note that the lens holder 3 is not limited to the above-mentioned configuration, and various changes and modifications can be made as shown in FIG. 7. In other words, a in the same figure is
The holder main body 3A and the lens holding portion 3B are integrally molded. The lens holding part 3B has one lens groove 27 and also has a cutout part 35 by being divided into left and right halves. In such a configuration, not only is the structure simple, but there is only one lens groove 27, so it is easy to attach and detach the optometry lens.
It has the advantage that the holding force of the optometric lens is stable and convenient for astigmatism alignment.

In FIG. 2B, the lens opening 22 is formed into a substantially oval shape that is elongated in the vertical direction, and the other configurations are the same as the lens holder shown in FIG. In the case of aligning the axis of an astigmatic lens, the lens holder shown in Figure a is used because the astigmatic lens is circular, but in the case of a progressive multifocal lens, it is necessary to ensure distance and near vision areas. An oval shape is preferred, and therefore the lens holder shown in Figure b is used.

In FIG. 1c, all the lens grooves 27a to 27c of the lens holder 3 shown in FIG. 1 are formed to have the same groove diameter.

Figure d shows the holder main body 3A and the lens holding part 3B.
The lens holding part 3B is provided with three lens grooves 27a to 27c having the same groove diameter, and the lens holding part 3B is divided into left and right halves to provide a notch 35.

A nose pad attachment hole 31 to which the nose pad member 4 is detachably attached is formed in the widthwise center of the front mounting 9 so as to penetrate through the upper and lower surfaces thereof. This nose pad mounting hole 31 has a fan-shaped longitudinal section passing through the center line in the left-right direction, as shown in FIG. It is shaped like a narrow number ``8'' and allows the angle of the nose pad member 4 to be adjusted in the front-rear direction. Center angle α of nose pad mounting hole 31
is approximately 15°, with its front wall tilting forward at 15° and its rear wall being approximately vertical.

The nose pad member 4 is formed in a fork shape from a suitable resin material, and includes a main body 4A that is slidably inserted into the nose pad mounting hole 31;
The nose pad 4B is provided at the lower end of the main body 4A in a bifurcated manner, and is abutted from above so as to sandwich both sides of the subject's nose. The main body 4A is made of a round bar-shaped body, and is inserted into the nose pad mounting hole 31 from below, and is held at any height position by the frictional force with the hole 31, and the angle can be adjusted in the front and rear directions. Like the lens holder 3, the nose pad member 4 will not slide down or its angle will change unless a certain amount of external force is applied to it. When adjusting the angle of the nose pad member 4, as described above, the longitudinal cross-sectional shape of the nose pad mounting hole 31 is fan-shaped, and the central part of the upper end side opening is narrow, as shown in FIG. As shown, the main body 4A has two angular positions: a substantially vertical angular position where it is in close contact with the rear wall of the nose pad mounting hole 31, and an angular position where the main body 4A is in close contact with the front wall and inclined approximately 15 degrees forward.
selectively locked in position.

The nose pad member 4 can also be changed and deformed in various ways, and the length and opening angle of the nose pad portion 4B can be changed depending on the age, nose shape, etc. of the eye being examined, or it can be screwed into the optometry frame 2. It may also be attached to.

In addition, the nose pad member 4 cannot be used when the subject's eyes are examined while wearing glasses, and in that case, a hanger (not shown) formed in an inverted T shape is used for the nose pad. It is inserted into the mounting hole 31, and the lower end horizontal portion abuts against the upper edge of the rim of the eyeglasses, thereby stably supporting the optometry frame 2.

Thus, the lens holder 3 of the optometry frame 1 having such a configuration is composed of the holder main body 3A and the lens holding part 3B, which are made of a resin material and are separately formed. It has a simple structure, has a small number of parts, is easy to assemble and disassemble, and the lens grooves 27a to 27c and the holder groove 27d can be easily cleaned. It can be reduced. Furthermore, the lens holder 3 is lighter in weight than a metal lens holder, which reduces the physical burden on the eye being examined, and allows the lens holder 3 to be comfortably worn during long examinations. Furthermore, since a plurality of lens grooves 27a to 27c with different groove diameters are provided, optometry lenses with different lens diameters can be used together.

In the above embodiments, the slider 25 is integrally provided with the holder main body 3A, but the slider 25 does not have to be integrally molded.

[Effects of the invention] As explained above, the lens holder for an optometry frame according to the invention is composed of a holder main body that is attached to an optometry frame and a lens holder having a lens groove, so the structure is simple and there are no parts required. Since the number of parts is small, it can be provided at low cost, and if the holder main body and lens holding part are formed separately and separably connected by a connecting means, the lens groove can be cleaned easily and easily when disassembled. Therefore, it is hygienic and can reduce discomfort for the eye subject. Also,
When the lens grooves have different groove diameters, it is possible to use optometry lenses with different lens diameters together.
Furthermore, if the lens holder is made of resin,
It is lightweight, reduces the physical fatigue of the eye being examined, and can be comfortably worn during long examinations.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of an optometric frame equipped with a lens holder according to the present invention, Fig. 2 is an exploded perspective view of the optometric frame, and Fig. 3 is an enlarged cross-sectional view taken along the - line in Fig. 1. Figure 4 is the − of Figure 1.
5 is an enlarged sectional view taken along the - line in FIG. 1, FIG. 6 is a perspective view of essential parts of the optometry frame, and FIGS. 7 a, b, c, and d are other implementations of the lens holder, respectively. An example is an exploded perspective view, and FIG. 8 is a perspective view of a conventional optometry frame. 1...Optometry frame, 2...Frame body,
3...Lens holder, 3A...Holder body, 3B
... Lens holding part, 4 ... Nose pad member, 5 ... Main body, 6 ... Lens holder holding member, 7, 8 ... Temple, 11 ... Guide groove, 22 ... Lens opening, 24 ... Elastic tensioner Piece, 25...Slider, 2
7a to 27c...lens groove, 29...engaging hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A lens holder that is attached to an optometry frame that is attached to the head of an eye patient, which has a lens opening in the center and a slider that is held in the optometry frame at the upper end. What is claimed is: 1. A lens holder for an optometry frame, comprising: a holder body having a holder body; and a lens holding portion provided at the lower part of the holder body and having at least one lens groove formed on an inner surface thereof to accommodate an optometric lens. (2) In the lens holder for an optometry frame according to claim (1), the holder main body and the lens holding portion are formed separately and are separably coupled by an engagement means. Lens holder for frame. (3) The lens holder for an optometry frame according to claim (1) or (2), wherein the lens groove is comprised of at least two types of lens grooves, large and small, with different groove diameters. lens holder. (4) The lens holder for an optometry frame according to claim (1), (2) or (3), wherein the lens holder is made of a resin material. . (5) In the lens holder for an optometry frame according to claim (1), (2), (3) or (4), the lens aperture is
A lens holder for an optometric frame, characterized by having a substantially circular or substantially oval shape. (6) The lens holder for an optometry frame according to claim (3), wherein a notch is formed at least at the lower end of the lens groove having a small groove diameter.