JP2003079576A - Frame for optometry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a frame usable as it perfectly matches the pupillary distances of many subjects and to make the frame inexpensive, lightweight, and easy to store. SOLUTION: The frame for optometry comprises a pair of right and left lens holders 2 and 2 having bows 3 at the outer ends of lens retaining parts 21 formed at the center, the lens holders having connection pieces 23 at the inner ends of the lens retaining parts 21; and a clip-shaped connector 4 clamping the connection pieces 23 in predetermined spaced, opposite relationship to enable the lens holders 2 and 2 to be interconnected while maintaining a desired interval therebetween, the connector having a nose pad 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optometry frame which is used by being worn on the head of a subject when performing a visual acuity test.

[0002]

2. Description of the Related Art Conventionally, an optometry frame capable of detachably holding optometry lenses of different dioptric powers is used when performing a visual acuity test in an ophthalmology department or an eyeglass specialty store for prescription of spectacles. This optometry frame is provided with vines at both ends of a lens holder provided with left and right lens holding portions so that a plurality of types of optometry lenses can be attached and detached,
While the subject wears the vine of the optometry frame on his or her ear like glasses, the examiner appropriately selects from various optometry lenses and fits it into the lens holder, and the examinee passes the optotype through those optometry lenses. By checking the visual recognition condition when looking, a lens suitable for the subject is searched.

[0003]

At this time, it is necessary to match the center of the lens with the position of the pupil of the subject, and at the same time, to perform an eye examination while properly maintaining the distance between the pupil and the lens. There are individual differences in the interpupillary distance between both eyes and the positional relationship between the nose and the eyes, and in general, the position of the human eye is often not exactly symmetrical about the nose.

Therefore, conventionally, a plurality of types of optometry frames having different intervals between the left and right lens holders into which the optometry lenses are fitted are prepared, and the optometry frame that is closest to the pupil distance of the subject is selected and used. I was going.

However, in order to match the interpupillary distances of various examinees of all ages, men and women, many types of optometry frames must be prepared, resulting in high cost and troublesome storage. Moreover, it is extremely troublesome to select the one suitable for the subject.

Further, since the interpupillary distance of the subject to which the optometry frame of each size is applied is provided with a certain width, the interlens distance cannot be finely adjusted according to the subject. The positions of the lens and the pupil of the subject are rarely completely matched, and in many cases, the eye should be examined in a slightly shifted state.

Therefore, in order to match the distance between the lenses and the distance between the pupils of the examinee, the left and right lens holders to which the optometry lens is attachable / detachable are slid in the left / right direction by means of a slide hardware or a screw using a spring or the like. An optometry frame mounted on the mounting so as to be possible may be used.

However, such an optometry frame is
The structure was complicated, productivity was poor, and adjustment work was complicated and expensive. Moreover, because it is made of metal and heavy,
The subject was physically burdened.

Further, in such an optometry frame, although it is possible to adjust the left and right lens intervals centering on the position of the nose, it is extremely difficult to cope with the vertical displacement of the pupil.

[0010]

SUMMARY OF THE INVENTION Therefore, according to the present invention, an optometry lens can be detachably held and a lens holder having a vine and separated left and right, and a left and right lens holder having a nose pad can be arbitrarily set. With an optometry frame consisting of clip-shaped connecting tools that can be held at intervals, it is possible to perform optometry by arbitrarily finely adjusting the position of the optometry lens according to the position of the subject's eye with a simple configuration. .

An uneven portion is provided on the surface of the connecting piece, and an engaging convex portion or an engaging concave portion that engages with the uneven portion is provided on the sandwiching surfaces of the left and right ends of the connecting member, respectively. Therefore, it is possible to prevent the coupling tool and the lens holder from sliding.

Further, if the nose pad is attached to the clip so that the vertical position can be adjusted, the proper distance between the eye and the lens can be maintained by finely adjusting the position of the nose pad for each subject. be able to.

Furthermore, if the tip of the vine is slidably attached to the lens holder so that the length of the vine can be adjusted, the optometry frame can be used for a large number of subjects with only one type of component. It can be adapted to the head shape of.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 6 show an example of a preferred embodiment of the present invention. Each part of the optometry frame 1 as shown in FIG. 1 is appropriately molded with a hard synthetic resin, and FIG. As shown, a pair of left and right lens holders 2, 2
And the vines 3 and 3, the clip-shaped connector 4, and the nose pad 5.

The lens holders 2 and 2 are symmetrically formed and are plate-like members each having a semicircular arch portion in the center of which the lower portion is opened, and an axial scale is displayed on the front surface of the arch portion. A lens holding portion 21 having a lens groove for fitting and holding the peripheral edge of the optometry lens 9 is formed on the front surface of the lower end portion. The lens grooves are provided in parallel in the front-rear direction at a plurality of places, for example, two to three places. All of these lens grooves may have the same diameter,
If necessary, different groove diameters may be used so that it can be applied to various optometry lenses 9 having different lens diameters.

Further, mounting holes 22 for fixing the vine 3 are provided at the outer ends of the left and right lens holders 2, respectively, and one or both front and rear surfaces of the connecting piece 23 formed at the inner end are provided. Concavo-convex portions for engaging the connecting tool 4 are formed. It is preferable that the concave and convex portions are provided at intervals as fine as possible so that the position at which the connector 4 is engaged can be finely adjusted.

The front end portion 31 of the vine 3 is shown in FIG.
As shown in FIG. 5, when the tip portion 31 is inserted into the mounting hole 22 of the lens holder 2 from the back side and pushed axially to pass through the mounting hole 22 and then stopped at an appropriate position, the saw The blade-shaped tip portion 31 is engaged with the mounting hole 22 so that the length of the vine 3 can be adjusted. Since the vine 3 is made of synthetic resin and has elasticity, its length can be easily adjusted by pushing or pulling it in the axial direction.

In order to match the length of the vine 3 and the shape of the ear-hooking portion 32 with the subject, the tip portion 31 of the vine 3 and the ear-hooking portion 32 are molded separately, and are most suitable for the subject. A suitable ear hook 32 may be selected and attached for use.

FIG. 4 shows a detailed shape of an engaging portion between the lens holder 2 and the connecting tool 4, wherein the connecting tool 4 is provided at both left and right inner sides of the front and rear sandwiching portions 41, 42. , The engaging protrusion 43 for engaging with the concave-convex portion 23 of the lens holder 2, and the nose pad 5 on the rear sandwiching portion 42.
Can be attached.

Then, as shown in FIG. 5, an operating portion 44 of the connecting tool 4 is provided on the upper side of the holding portion 41 on the front side. By pushing the operating portion 44 with a finger, two holding portions are provided. When the lens holders 2 and 2 are opened and the forces are released by sandwiching the lens holders 2 and 2 at the left and right ends, the sandwiching portions 41 and 42 are closed and the lens holders 2 and 2 are sandwiched.
2 and the connector 4 are connected to each other. In the present embodiment, the concavo-convex portion 23 formed on the connecting piece 23 is composed of a plurality of recesses arranged side by side in the vertical and horizontal directions, and the connecting tool 4 is provided.
By providing a plurality of engaging protrusions 43 that engage with the recesses, the two lens holders 2 and 2 can be connected not only in the left-right direction but also in the vertical direction at desired positions. As shown, the concave-convex portion 23 formed on the connecting piece 23 is composed of a plurality of recesses arranged side by side in the up-down direction, and a plurality of engaging protrusions 43 that engage the connector 4 with the recesses.
By providing the above, the two lens holders 2 and 2 may be connected at a desired position at least only in the left-right direction.

Further, an insertion hole 45 is formed in the vertical holding portion 42 in the vertical direction, and the insertion portion 51 of the nose pad 5 is inserted along the side wall of the insertion hole 45. As shown in FIG. 7, a pair of elastically deformable spring plate members 46 facing each other are vertically attached to the side wall of the insertion hole 45. The spring plate members 46 are attached so that their central portions are curved toward the other spring plate member 46. Protrusions 47 facing each other with a predetermined distance are provided at the centers of the spring plate members 46. Has been.

The nose pad 5 is provided with a bifurcated nose pad 52 which comes into contact with the nose of the subject from both sides, and a locking portion 53 which extends upward and has saw-tooth-shaped irregularities formed at both left and right ends. And the inserted portion 51. The width of the insertion portion 51 is the same as that of the protrusion 47 described above.
It is considered to be larger than the distance between them.

When attaching the nose pad 5 to the connector 4,
Insert the insertion portion 51 into the insertion hole 45 from below, and insert the insertion portion 51
When the tip of the spring reaches the protrusion 47 and is further pushed upward, the insertion portion 51 enters while the spring plate member 46 is being pushed, and when stopped at an appropriate position, the protrusion 47 is projected in the concave portion of the locking portion 53. And the nose pad 5 is fixed by the restoring force of the spring of the spring plate member 46. in this way,
The vertical position of the nose pad 5 can be adjusted by the insertion length of the insertion portion 51. When the nose pad 5 is pulled out from the insertion hole 45, the spring plate member 46 is pushed and the insertion portion 51 is pulled out. Can be pulled out.

The shape of the nose pad 5 is similar to that normally attached to spectacles, for example, the nose pad portion 52 is rotatably connected with an appropriate degree of freedom, and the nose pad of each subject is examined. It can be adjusted to any angle according to the shape of
Alternatively, several kinds of nose pads having different shapes or sizes may be prepared, and ones suitable for the subject may be attached and used.

FIG. 8 shows a different embodiment of the attachment portion of the nose pad, in which the insertion portion 54 made of a spring material is provided above the nose pad portion 52, and the holding portion 42a on the rear side of the connector.
The position of the nose pad 5a in the up-down direction is adjusted by locking the tip of the insertion portion 54 in the locking groove 48 provided facing each other at an appropriate interval. The distance between the left and right engaging grooves 48, 48 is formed smaller than the distance between the tips of the inserting portions 54. When it is inserted and the force of the finger is released at an appropriate position, the nose pad 5a is fixed to the locking groove 48 by the restoring force of the spring of the insertion portion 54.

As a means for fixing the nose pad 5 to the connector 4, a male screw is formed above the nose pad 62 and is screwed into a female screw provided below the connector 4 to adjust the position. You can also do Further, the nose pad 5 may be fixed to the connecting tool 4 in advance, and the position of the nose pad 5 may be adjusted in the vertical direction by the position where the lens holder 2 is held by the connecting tool 4.

In addition, in the case of optometry with the spectacles normally used by the subject, instead of the nose pad 5, a hanging tool for bringing the optometry frame 1 into contact with the spectacle frame is connected. The nose pad 5 is attached to the tool 4 in this case as well.

Further, in the optometry frame 1 of the present invention, the materials of all the constituent members are not limited to the synthetic resin, and if necessary, a part thereof may be used in combination with a metal.

When performing the optometry using the optometry frame 1, first, the vines 3 are attached to the left and right lens holders 2 and the length of the vine 3 is adjusted according to the subject. And
The center of each of the left and right lens holders 2 and 2 is aligned with the position of the subject's pupil, and the lens holders 2 and 2 on both sides are held by the connector 4 into which the nose pad 5 is inserted at an appropriate position.
After that, if the position of the nose pad 52 is adjusted in the vertical direction according to the subject, the optometry frame 1 in which the position and the distance between the pupil of the subject and the optometry lens 9 are correctly matched is obtained.
The examiner may insert the optometry lens 9 into the lens groove 21 as appropriate to examine the eye.

As described above, by using the optometry frame 1 of the present invention, it can be applied to a subject whose pupil position is not bilaterally symmetrical or to any subject whose head size and shape are different. Therefore, the eye distance can be easily combined with the interlens distance to accurately perform the optometry.

Further, since the optometry frame 1 of the present invention can be manufactured at low cost and can be adapted to anyone by using ready-made parts, spectacles temporarily used immediately after surgery for cataract, etc. It can also be used as a frame.

[0033]

According to the present invention, the pupil and the lens can be easily adjusted for any subject, even when the position of the pupil or ear of the subject is not symmetrical about the nose. The position can be matched and the eye can be examined accurately.

Further, since each of the constituent parts can be molded from synthetic resin, it is lightweight, has an appropriate elasticity, is less physically burdened on the subject, and can be manufactured at low cost. .

Furthermore, the nose pads, vines, and other parts that come into direct contact with the head can be easily removed, which facilitates cleaning and is hygienic.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded plan view of the optometry frame shown in FIG.

FIG. 3 is an enlarged side view of a tip portion of a vine.

FIG. 4 is an enlarged plan view of a connector and an end portion of a lens holder.

FIG. 5 is an enlarged side view of the connector and the nose pad.

FIG. 6 is an enlarged plan view of a connector and a lens holder end portion according to a different embodiment.

FIG. 7 is an enlarged vertical cross-sectional view of a mounting portion between a connecting tool and a nose pad.

FIG. 8 is a perspective view showing different embodiments of the rear side holding portion and the nose pad of the connector.

[Explanation of symbols]

1 Optometry frame, 2 Lens holder, 3 vine, 4
Connector, 5 nose pad, 9 optometry lens, 21 lens holding part, 22 mounting hole, 23 connecting part piece, 31 tip part, 4
1, 42 Clamping portion, 43 Engaging protrusions, 44 Operating portion, 4
5 insertion holes, 46 spring plate materials, 47 protrusions, 51 insertion parts, 52 nose pads

Claims (4)

[Claims] 1. A pair of left and right lens holders each having a vine at the outer end of a lens holding portion formed at the center and a connecting piece at the inner end of the lens holding portion, and the lens holders facing each other at a predetermined interval. An optometry frame comprising: a clip-shaped connector having a nose pad so that the lens holders can be connected to each other while sandwiching the connecting portion to keep the lens holders at desired intervals. 2. A concavo-convex portion is provided on the surface of the connecting piece, and an engaging convex portion or an engaging concave portion that engages with the concavo-convex portion is provided on the sandwiching surfaces of the left and right end portions of the connecting tool. The optometry frame according to claim 1, which prevents sliding of the connecting tool and the lens holder. 3. The optometry frame according to claim 1, wherein the nose pad is attached to the connector so that the vertical position can be adjusted. 4. The optometry frame according to claim 1, wherein the tip of the vine is attached to the lens holder so as to be slidable in the axial direction, and the length of the vine is adjustable.