JP3111504U - Glasses preparation gauge - Google Patents

Abstract

In the preparation of spectacles, the distance between the apexes of the ears and the distance from the center of the nose pad to the apex of the ears can be measured easily and accurately.
A front portion 1 is located in front of the eye and a temple portion 2 is located on the side of the head. The front portion 1 has a front central portion 3 and a force of a tension spring 6 extending from the front central portion 3 to both sides. And a movable front portion 5 provided with a scale 14 for displaying a drawing amount. The temple portion 2 is a temple base portion 8 located on the front portion 1 side. And a movable temple portion 10 that can be pulled out against the force of the tension spring 6 and is provided with a scale 14 that displays the amount of pull-out.
[Selection] Figure 3

Description

  The present invention relates to a measuring tool used when preparing spectacles, and more particularly to a measuring tool that can accurately measure the size of the head of a spectacle user when preparing spectacles.

The size of the head of a person who intends to use eyeglasses varies, and it is natural that a satisfactory fit cannot be obtained unless the eyeglasses are adapted to the size of the head of each individual wearer. When preparing eyeglasses, two dimensions are particularly important: distance A between the ear vertices shown in FIG. 1 and distance B from the center of the nose pad to the ear vertices shown in FIG.
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  Conventionally, there is no simple measuring tool that can measure these dimensions A and B easily and accurately, and the person in charge of the spectacle store relies on intuition and skill to measure the two kinds of dimensions. Was being prepared. However, in this conventional method, it is inevitable that the fit feeling at the time of wearing the glasses varies depending on the experience and skill level of the person in charge, and it is impossible to prepare glasses with a constant quality.

  As a result of research to solve the above-mentioned conventional problems related to the measurement of the size of the wearer's head during the preparation of spectacles, the present inventor completed a spectacle preparation gauge that can easily measure the above dimensions. Therefore, it is proposed here as the present invention.

  In a spectacle preparation gauge comprising a front part 1 located in front of the eyes and a temple part 2 located on the side of the head, the front part 1 is moved from the front central part 3 to the both sides of the front central part 3. It is composed of a movable front part 5 that can be pulled out against the force and provided with a scale 14 for displaying the amount of withdrawal, and the temple part 2 includes a temple base part 8 positioned on the front part 1 side. The above-described problem has been solved by comprising the movable temple portion 10 which can be pulled out against the force of the tension spring 6 and is provided with a scale 14 for displaying the drawing amount. Further, a pair of optometry lens frames 13 to which the optometry lens can be detachably attached may be attached to the front central portion 3 so as to be slidable separately on the left and right.

  FIG. 3 is a perspective view of an embodiment of a spectacle preparation gauge according to the present invention, and FIG. 4 is an enlarged back cross-sectional view of a part of the front portion 1 which is an essential part thereof.

  This spectacles preparation gauge is composed of a front part 1 located in front of the subject's eye and a temple part 2 located on the side surface of the head. The front part 1 includes a front center part 3 having a hollow sheath shape and a movable front part 5 having one end slidably inserted into the hollow part 4 of the front center part 3. The end is bent at a substantially right angle toward the side. Further, as shown in FIG. 4, a tension spring 6 is stretched between the front center portion 3 and the movable front portion 5 to urge the movable front portion 5 inward.

  Further, a stopper 7 is provided at the front center portion 3 so that the slide of the movable front portion 5 can be stopped at an arbitrary position. Further, a scale 14 for displaying a drawing amount from the front central portion 3 is attached to the front surface of the movable front portion 5.

  On the other hand, the temple portion 2 has a hollow sheath shape, a temple base portion 8 positioned on the front portion 1 side, a distal end side of the temple base portion 8 is slidably inserted, and a modern 9 is attached to the other end. It consists of a temple part 10. A tension spring 6 is stretched between the temple base portion 8 and the movable temple portion 10 to urge the movable temple portion 10 forward. Furthermore, the temple base 8 is provided with a stopper 12 so that the sliding of the movable temple 10 can be stopped at an arbitrary position. Further, a scale 14 is attached to the side surface of the movable temple portion 10 to display the drawing amount from the temple base portion 8.

  Further, a push rod 11 is planted forward at the tip of the movable temple 10 so that the movable temple 10 can be slid backward against the urging force of the tension spring 6. Further, the distal end portion of the temple base portion 8 is pivotally supported by the end portion of the movable front portion 5, and can be folded inward as in the case of normal glasses. Further, a nose pad 15 is suspended from the center lower surface of the front center portion 3.

  This embodiment has the configuration as described above, and is attached to the head of the person to be measured in the same manner as in the case of ordinary glasses with all the stoppers 7 and 12 being released. The movable front portion 5 is biased inward and the movable temple portion 10 is biased forward by the tension spring 6. However, when the subject is mounted on the head of the subject, the movable front portion 5 is outward and the movable temple portion 10. Slides backward and stops at a position that fits the head dimension of the person being measured. At this position, the stoppers 7 and 12 are locked, the current positions of the movable front part 5 and the movable temple part 10 are fixed, removed from the head of the person being measured in that state, and a scale indicating the amount of movement of the movable front part 5 14 and the scale 14 indicating the amount of movement of the movable temple portion 10 are read, and the distance A between the ear vertices and the distance B from the center of the nose pad to the ear vertices are known. If these numerical values are used as data for determining the temple opening width and the modern bending width, it is possible to create glasses that fit the head of each wearer.

  As described above, after wearing the spectacle preparation gauge on the head of the person to be measured, the basic data for preparing the spectacles can be obtained by simply reading the scales 14 attached to the movable front portion 5 and the movable temple portion 10. Therefore, anyone can carry out the eyeglass preparation work with high accuracy without relying on intuition or skill.

  Next, another embodiment of the eyeglass preparation gauge according to the present invention will be described with reference to FIG. In this embodiment, a pair of optometry lens frames 13 are attached to the front central portion 3 so that they can slide separately on the left and right sides, and a scale 14 is provided for indicating the position of the optometry lens frame 13. Other parts are the same as those of the first embodiment described above, and the same reference numerals are given and the description thereof is omitted.

  This embodiment can not only measure the distance A between the ear apex of the head of the spectacle wearer and the distance B from the center of the nose pad to the apex of the eye by the same usage as the first embodiment, but also the optometry lens. An optometry lens can be attached to the frame 13 for use in a vision correction test, and can be used for two different purposes. In this embodiment, since the optometry lens frame 13 can slide on the front central portion 3 separately, the optical axis of the optometry lens in the optometry lens frame 13 is centered on the eyeball of the wearer. Can be accurately matched to the position, and glasses that are optically more fit can be prepared.

Explanatory drawing for demonstrating the distance A between the ear vertices. Explanatory drawing for demonstrating the distance B from the center of a nose pad to an ear | edge vertex. The perspective view of the 1st Example of the spectacles preparation gauge which concerns on this device. FIG. 3 is an enlarged back cross-sectional view illustrating an enlarged part of the front portion 1. The perspective view of the other Example of the spectacles preparation gauge which concerns on this device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front part 2 Temple part 3 Front center part 4 Hollow part 5 Movable front part 6 Tension spring 7 Stopper 8 Temple base 9 Modern 10 Movable temple part 11 Push rod 12 Stopper 13 Optometry lens frame 14 Scale 15 Nose pad

Claims (2)

It consists of a front part 1 located in front of the eyes and a temple part 2 located on the side of the head. The front part 1 resists the force of the front central part 3 and the tension spring 6 from the front central part 3 to both sides. The temple portion 2 is composed of a movable front portion 5 that can be pulled out and provided with a scale 14 for displaying a drawing amount. The temple portion 2 includes a temple base portion 8 positioned on the front portion 1 side, and a tension spring. 6. A spectacles preparation gauge characterized by comprising a movable temple portion 10 provided with a scale 14 for displaying a pull-out amount while being able to be pulled out against the force 6. The eyeglass preparation gauge according to claim 1, wherein a pair of optometry lens frames (13) to which an optometry lens can be detachably attached are slidably attached to the front central part (3) separately.

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