JPH0137604Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optometric test frame, and more particularly to a low-cost, low-weight optometric test frame that can adjust the interpupillary distance.

[Conventional technology]

Eyeglasses are adjusted by cutting and fitting spectacle lenses having a refractive index suitable for the customer's eyes into a specific eyeglass frame selected by the customer. In that case, it is important to match each refractive center of the lens with the position of each pupil of the customer's eye. That is, if glasses are used in which the refractive center of the lens is not located just in front of the pupil position, problems such as eye fatigue and decreased visual acuity will occur.

From this point of view, in the past, various optometry test frames were prepared in advance to correspond to the pupil position of the subject's eye, or a sliding method was used as described in Japanese Utility Model Application No. 57-14121. A technique is known that corresponds to the pupil position of the subject's eye.

[Problem that the invention attempts to solve]

However, the former method, in which various optometry test frames are prepared in advance to correspond to the pupil position of the eye patient, is not economical because it requires preparing optometry test frames that are rarely used. There is a drawback that
The latter slide-type pupil position adjustment means does allow for fine adjustments, but its complicated structure makes it expensive, and it is said to be uncomfortable during testing because it is too heavy. There are drawbacks.

Therefore, the technical problem of this invention is to provide a low-cost and light-weight optometry test frame that can match each refractive center of the lens with the position of each pupil in the customer's eye. .

[Means for solving problems]

The inventor of the present invention came up with the present invention as a result of intensive studies to solve the above-mentioned problems. That is, the optometry test frame according to the present invention is an optometry test frame in which an optometry lens is temporarily fixed to left and right optometry test frames connected by a bridge, and the width corresponds to the pupil position of the eye being examined. It is characterized by a combination of a plurality of selectable bridges and left and right optometry test frames detachably connected to the bridges.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a front view showing an embodiment of an optometry test frame according to the present invention, Fig. 2 is a sectional view taken along the line -
Fig. 3 is an end view taken along the - line of the same as above, Figs. 4 and 6 are plan views of essential parts showing other embodiments of the optometry test frame according to the present invention, and Fig. 5 is a cross section taken along the - line of Fig. 4. It is a diagram.

In the figure, reference numeral 1 denotes an optometric test frame, which consists of a left frame 1A and a right frame 1B, and is made of any material such as light metal or lightweight reinforced plastic. 2 is a bridge to which the left frame 1A and the right frame 1B can be detachably fixed.
The fixing means is not particularly limited, but for example, the fixing means shown in FIGS.
As shown in Figure 3, left frame 1A and right frame 1
B may be fitted onto the bridge 2 and fixed with a fastener 3 such as a screw, clip, or pin. In addition, any configuration can be adopted as long as it is detachable. That is, in the case of the embodiment shown in FIGS. 1 to 3, the protrusions 1a, 1 of the left and right frames 1A, 1B
Holes 2a and 2 are drilled on the left and right sides of the bridge 2, respectively.
b and is secured with a stopper 3. On the other hand, in the case of the embodiment shown in FIGS. 4 and 5, the bridge 2 is composed of two leaf springs 2A and a spacer 2B held between the leaf springs 2A. In between, there is a stopper (bending part) S at the tip.
The left and right frames 1A and 1B provided with the above can be inserted and clamped. Or left frame 1A
The right frame 1B may be brought into contact with the bridge 2 and fixed.

The bridge 2 is available in various widths to correspond to the distance between the pupil positions A and B of the subject's eye. For example, the bridge 2 has a width of 52, 54,
56……70, 72, 74mm at least
Preferably, 12 types of bridges 2 are provided. However, in the embodiment shown in FIG.
If the clamping portions at both ends of the leaf spring 2A are formed in multiple stages, for example, three stages, as shown in FIG.
Since A and 1B can be inserted in any position, the range of pupil position adjustment is expanded. For example, by preparing bridges with four different widths in three stages, the above can be achieved.
It has the same effect as obtaining bridges of 12 different widths.

Furthermore, in the embodiment shown in FIG. 4, the length of the spacer 2B itself used in the embodiment is changed, the insertion length of the frame 1A into the leaf spring 2A is adjusted, and the pupil position is adjusted. Good too. In this case, the stopper S of frame 1A is
The frame 1A can be fixed by fitting it into the groove 4 formed in B.

Furthermore, in the embodiment shown in FIG. 4, the length of the spacer 2B may not be changed, and the length of the leaf spring 2A may be adjusted in a sliding manner with respect to the spacer 2B.

Note that 5 has a nose pad, which is fixed to the bridge 2. The fixing means is not particularly limited. Alternatively, it may be detachably attached to the bridge 2. With this configuration, one or several nose pads 4 can be used for all of the 12 types of bridges 2, increasing versatility. Reference numeral 6 denotes an insertion portion for an optometric test lens formed between the support portion 7 and the frame 1.

The optometry test frame according to this embodiment is configured as described above, so that when using it, first measure the pupil position of the subject's eye using, for example, a ruler or a distance measuring device, and then use the measured value. Based on this, a bridge 2 having a predetermined width is selected. Next, the left and right frames 1A and 1B are fixed to the selected bridge 2. After adjusting the pupil position to the eye of the subject as described above, the optometric test lens (not shown) is inserted into the optometric test frame, and the most preferable optometric test lens can be selected.

[Effect of idea]

According to the present invention, it has a plurality of bridges whose widths correspond to the pupil position of the eye being examined, and the bridges are removably connected to the left and right optometry test frames. There is no need to prepare various test frames for optometry, and therefore it is more economical than the conventional method of preparing various test frames for different pupillary distances, and the pupillary distance can be adjusted using a sliding method. Since it has a simpler structure than other methods, it can reduce costs, and there is no feeling of weight when using it, allowing for comfortable eye examination.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of an optometry test frame according to the present invention, Fig. 2 is a sectional view taken along the line -
Fig. 3 is an end view taken along the - line of the same as above, Figs. 4 and 6 are plan views of essential parts showing other embodiments of the optometric test frame according to the present invention, and Fig. 5 is a cross section taken along the - line of Fig. 4. It is a diagram. In the figure, 1 indicates an optometry test frame, and 2 indicates a bridge.

Claims (1)

[Scope of utility model registration request] In an optometry test frame in which optometry lenses are temporarily fixed to left and right optometry test frames connected by bridges, a plurality of bridges and a width corresponding to the pupil position of the subject can be selected. An optometry test frame characterized in that it consists of a combination of left and right optometry test frames that are detachably connected to the bridge.