JP7179355B2 - ophthalmic circuit breaker - Google Patents

Description

TECHNICAL FIELD The present invention relates to an occluder for spectacles that is applied during a visual acuity test.

In a visual acuity test in ophthalmology, unaided visual acuity without correction with spectacles or the like and refractive vision with correction with spectacles or the like are measured. In particular, in order to evaluate a patient's visual function in daily life, it is essential to measure the patient's visual acuity when wearing spectacles (hereinafter referred to as spectacle visual acuity).

When measuring the spectacle visual acuity, a spectacle occluder that blocks the field of view of the eye that is not the object of measurement is used in order to measure the spectacle visual acuity of each eye of the patient.

An example of a commonly used spectacle shield (see Non-Patent Document 1) will be described with reference to FIGS. 5 and 6. FIG.

As shown in FIGS. 5A and 5B, the eyeglass shielding device 30 includes a black plate-like substantially oval main body portion 31, a knob portion 32 projecting upward in the drawing from the main body portion 31, and a main body portion 31. and a clamping portion 33 attached to the back surface (the front surface in FIG. 5B). The holding portion 33 includes a knob portion 34 provided on the back side of the knob portion 32 (on the front side in FIG. 5B), a pair of holding portions 35 bifurcated and extending downward in the figure from the knob portion 34, and the knob. A supporting portion (not shown) made of a plate spring supports the portion 34 and the pressing portion 35 so as to be detachable from the main body portion 31, and urges the knob portion 34 and the pressing portion 35 toward the back side of the paper surface in FIG. 5B. ) and The pressing portion 35 is covered with a tube 36 made of an elastic member such as rubber or plastic for protecting the lens.

When measuring eyeglass vision, as shown in FIGS. 6A and 6B, the pair of knobs 32 and 34 of the eyeglass shield 30 are biased in a direction to bring them closer to each other, so that the holding portion 35 is moved to the main body. In this state, the body portion 31 is placed in front of the lens 41 (the right lens 41 in FIG. 6A) corresponding to the eye on the side not to be measured of the spectacles 40, and is further pinched. When the biasing force acting on the portions 32 and 34 is released, the lens 41 is clamped and fixed between the body portion 31 and the pressing portion 35 by the biasing force of the support portion. As a result, the field of view of the eye (the left eye in FIG. 6) that is not to be measured can be blocked by the eyeglass blocker 30 .

"Shielder for eyeglasses｜Products｜Futaba Co., Ltd.", [online], [searched on September 22, 2017], Internet <URL: https://www.futaba-ltd.co.jp/item/ eyesight04/>

However, the spectacle shield 30 described above has a configuration in which the lens 41 is sandwiched between the body portion 31 and the pressing portion 35 by the biasing force of the biasing member, so the applicable frame of the spectacles 40 is limited. There was a problem that

As an example, as shown in FIG. 7, the lens 41 is fixed only at a portion of the frame 42 (near the bridge 43 in the illustrated example), and the lens 41 protrudes forward from the frame 42 in the rest of the frame 42. If the circuit breaker 30 is applied, the urging force of the supporting portion acts on the lens 41 in a direction approaching the frame 42, and the frame 42 and the lens 41 may be deformed. In such a state, it may even be difficult to actually wear the eyeglass shield 30 .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a spectacle shield that can be worn in various shapes of frames and lenses.

In order to achieve the above object, the eyeglass shield of the present invention is placed close to one surface of one lens of eyeglasses having a pair of lenses and a frame supporting these lenses, and is designed for the wearer of the eyeglasses. and a locking portion that protrudes from the body to one side of the lens and can be locked to the upper end of the rim of the frame or the upper end of the lens. Characterized by

The occluder for spectacles of the present invention constructed in this manner is arranged in close proximity to one surface of one lens of spectacles having a pair of lenses and a frame supporting these lenses, and is positioned close to one surface of the lenses to the spectacles wearer. It has a main body that imparts optical characteristics different from those of a chisel, and an engaging part that protrudes from the main body to one surface side of the lens and can be engaged with the upper end of the rim of the frame or the upper end of the lens.

Therefore, the spectacle shield can be worn by engaging the locking portion with the upper end of the rim of the frame or the upper end of the lens. It is possible to provide an occluder for spectacles that can be worn in various shapes of frames and lenses.

1 is a front view of an eyeglass occluder that is one aspect of the present disclosure; FIG. 1 is a right side view of an occluder for eyeglasses that is one aspect of the present disclosure; FIG. Fig. 2 is a back view of an eyeglass occluder that is one aspect of the present disclosure; 1 is a front view showing a state in which an eyeglass shield that is one aspect of the present disclosure is worn on eyeglasses. FIG. 1 is a perspective view showing a state in which an eyeglass shield that is one aspect of the present disclosure is worn on eyeglasses. FIG. It is a figure for demonstrating the effect|action of a balancer part. It is a figure for demonstrating the operation|movement of a latching|locking part. It is a figure for demonstrating the operation|movement of a latching|locking part. 1 is a front view showing an example of a general occluder for spectacles; FIG. FIG. 11 is a back view showing an example of a general eyeglass shield. 1 is a front view showing a state in which an example of a general occluder for spectacles is worn on spectacles. FIG. FIG. 3 is a back view showing an example of a general eyeglass shield worn on eyeglasses. It is a perspective view showing an example of spectacles.

An eyeglass occluder that is one aspect of the present disclosure will now be described with reference to FIGS. 1A-4B.

FIG. 1A is a front view, FIG. 1B is a right side view, and FIG. 1C is a rear view showing an occluder for spectacles that is one aspect of the present disclosure.

In these figures, an eyeglass occluder 10 , which is one aspect of the present disclosure, has a body portion 11 . The body portion 11 is composed of a plate-like member having an approximately elliptical outer shape. It is placed in close proximity and shields this lens. Therefore, it is preferable that the main body 11 is formed in a shape sufficiently larger than the lens, taking into account the size of the lenses of spectacles that are generally available on the market (especially the top and bottom and the rim shape).

Preferably, the main body 11 is constructed by attaching black hard paper, a hard plastic plate, or the like to both sides of a lightweight plate-like member such as foamed plastic or sponge, and is formed in the shape of an opaque black plate as a whole. there is

An elongated hole-shaped through hole 11a is formed in the upper central portion of the body portion 11 so as to penetrate in the thickness direction thereof, and a substantially rectangular parallelepiped connecting member 12 is inserted into the through hole 11a. 1A of the connecting member 12, a guide portion 13a extending along the surface of the main body portion 11 is provided on the front side (the front side in FIG. 1A), and a front side in FIG. 1A (the left side in FIG. 1B) rises from the guide portion 13a. A slide knob 13 having a knob portion 13b is connected.

On the other hand, a guide plate 14 extending along the back surface of the body portion 11 is connected to the rear surface side of the connecting member 12 in FIG. 1A (the front surface side in FIG. 1C). A pair of locking portions 15 are attached to the left and right ends of the guide plate 14 so as to project upward in FIG. 1C and rightward in FIG. 1B.

As will be described in detail later, when the eyeglass shield 10 is worn on the eyeglasses and the body portion 11 is arranged close to one surface of one of the lenses of the eyeglasses, the locking portion 15 is formed on the lens. It is configured so as to protrude from one side and be engaged with the upper end of the rim of the frame of the spectacles or the upper end of the lens.

As best shown in FIG. 1B, the engaging portion 15 is formed in a hook shape that curves downward in FIG. 1B. The engaging portion 15 is preferably made of a soft member such as sponge, and is black in order to enhance the shielding effect of the body portion 11 . The locking portion 15 is connected to the guide plate 14 by a connecting member 16 .

With the above configuration, as shown in FIG. 4A, by sliding the slide knob 13 in the vertical direction, the engaging portion 15 is configured to be movable in the vertical direction as the slide knob 13 is slid. Therefore, for example, in the case of spectacles with a narrow top and bottom, by moving the locking portion 15 downward as shown in FIG.

Returning to FIGS. 1A to 1C, a balancer portion 18 is attached to the upper end of the body portion 11 via a connecting rod 17. As shown in FIG. The balancer portion 18 is composed of a plate-like member having a diameter smaller than that of the main body portion 11 and having an approximately elliptical outer shape. As best shown in FIG. 1B, the balancer portion 18 is attached to the body portion 11 so as to tilt forward in FIG. 1B. As a result, the center of gravity of the eyeglass shielding device 10 as a whole is slightly above the center of the body portion 11, and the center of gravity of the eyeglass shielding device 10 is slightly above the center of the body portion 11, as shown in FIG. 1B. It is located slightly to the left in

As best shown in FIG. 1C, a non-slip portion 19 made of a material having a non-slip effect, such as plastic foam or sponge, is attached to the lower portion of the back surface (front surface in FIG. 1C) of the main body portion 11 . . As will be described in detail later, when the eyeglass shield 10 is worn on the eyeglasses and the main body 11 is arranged close to one surface of one lens of the eyeglasses, the anti-slip portion 19 is provided. It is provided on one surface side of the lens of the spectacles 11, and is provided so as to be able to come into contact with one surface of this lens.

A procedure for wearing the eyeglass shield 10 having the configuration described above on eyeglasses will be described with reference to FIGS. 2A and 2B. FIG. 2A is a front view showing a state in which the occluder 10 for spectacles, which is one aspect of the present disclosure, is worn on spectacles, and FIG. 2B is a perspective view of the same.

In order to wear the occluder 10 for spectacles, which is one aspect of the present disclosure, on the spectacles 20, one of the pair of lenses 22 of the spectacles 20 supported by the frame 21 (example shown in FIGS. 2A and 2B) In this case, the body portion 11 of the spectacles 20 is placed on the front surface of the left eye lens 22) in the drawing, and in this state, the locking portion 15 is placed on the upper end portion of the rim 23 of the frame 21 corresponding to the upper side of the lens 22, and the spectacles are assembled. The circuit breaker 10 is locked to the spectacles 20 by the locking portion 15 . Alternatively, in the case of a so-called rimless frame (a type of frame that omits the rim 23 and directly supports the lens), the locking portion 15 is placed on the upper end portion of the lens 22 to lock it.

Then, by sliding the slide knob 13 , the engaging portion 15 is moved up and down relative to the spectacles 20 , and the body portion 11 shields the entire lens 22 . Thereby, the spectacle shield 10 can be worn on the spectacles 20 .

At this time, as described above, the center of gravity of the eyeglass shield 10 as a whole is located slightly forward and to the left of the body portion 11 in FIG. Then, the body part 11 rotates slightly counterclockwise and stops with the non-slip part 19 lightly abutting the front surface of the lens 22 . As a result, relative movement between the eyeglass shield 10 and the eyeglasses 20 (especially the lenses 22) is suppressed.

Furthermore, as shown in FIG. 3, when the wearer of the spectacles 20, i.e., the patient, takes a forward leaning posture and the spectacles 20 rotate counterclockwise in the drawing, the center of gravity of the spectacle shield 10 is positioned as described above. is positioned slightly to the left in the drawing, the body portion 11 is more strongly rotated counterclockwise, and the anti-slip portion 19 contacts the front surface of the lens 22 more strongly. As a result, the relative movement between the eyeglass shield 10 and the eyeglasses 20 (especially the lenses 22) is further suppressed.

The occluder 10 for spectacles, which is one aspect of the present disclosure configured in this way, is arranged close to one surface of one lens 22 of the spectacles 20 having a pair of lenses 22 and a frame 21 supporting the lenses 22. and an engaging portion 15 that protrudes from the main body portion 11 toward one side of the lens 22 and can be engaged with the upper end portion of the rim 23 of the frame 21 or the upper end portion of the lens 22 .

Therefore, by engaging the engaging portion 15 with the upper end portion of the rim 23 of the frame 21 or the upper end portion of the lens 22, the occluder 10 for spectacles can be worn. It is possible to provide eyeglass occluders that can be worn with a variety of frame 21 and lens 22 shapes, regardless of shape or support structure.

That is, the spectacle shield 10, which is one aspect of the present disclosure, is not configured to be sandwiched like a general spectacle shield 30, and therefore has a three-dimensional frame 42 as shown in FIG. 7, for example. However, the lens 41 can be worn without excessive force acting on it.

Further, as best shown in FIG. 1B, the locking portion 15 is formed in a hook shape that curves downward, so that the spectacle shielding device 10 can be securely locked regardless of the thickness of the frame 21 . , the frame 21 can be applied to a wide range of shapes, from a thin frame to a thick frame, and further to a three-dimensional frame 42 as shown in FIG.

Here, since the body portion 11 shields one of the lenses 22, a sufficient shielding effect by the eyeglass shielder 10 can be expected.

In addition, since a pair of locking portions 15 are provided, it is possible to reliably lock the eyeglass shield 10 to the eyeglasses.

Furthermore, since the engaging portion 15 is provided so as to be movable in the vertical direction of the lens 22, by moving the engaging portion 15 in the vertical direction according to the dimension of the lens 22 in the vertical direction, spectacles with a narrow top and bottom can be used. wide eyeglasses.

Furthermore, since the main body part 11 is provided with a non-slip portion 19 which is provided on one surface side of the lens 22 and can come into contact with one surface of one of the lenses 22, the non-slip portion 19 abuts on one surface of the lens, thereby making the spectacles spectacles. Relative movement between the shield 10 and the spectacles 20 can be suppressed, so that even if the wearer of the spectacles 20 moves his or her face, the spectacle shield 10 can sufficiently follow it.

Since the balancer portion 18 protruding upward from the upper end portion of the body portion 11 is provided, the balancer portion 18 moves the center of gravity of the eyeglass shield 10 upward. Even when the body part 11 is tilted forward, the body part 11 rotates in a direction closer to the lens 22 side, so that the relative movement between the eyeglass shield 10 and the eyeglasses 20 can be suppressed. In particular, when the visual acuity at hand (near vision) is measured, the patient leans forward, so it is preferable to be able to suppress relative movement between the spectacle shield 10 and the spectacles 20 in such a case.

Aspects of the present disclosure have been described in detail above with reference to the drawings, but the specific configuration is not limited to one aspect of the disclosure described above. Included in the invention.

As an example, in the eyeglass shielding device 10 according to one aspect of the present disclosure described above, the body portion 11 as a whole is formed in the shape of an opaque black plate, thereby completely shielding the lens 22. The configuration of the portion is not limited to this, and is not limited as long as it can provide the spectacle wearer with optical characteristics different from those of lenses alone. As an example of such a main body, a transparent black lens such as sunglasses, a semi-transparent lens such as frosted glass, a convex lens with a high degree of power, a pinhole lens, and a lens having optical characteristics different from those of spectacle lenses are inserted. possible lens holders.

In addition, even if the main body 11 is formed in the shape of an opaque black plate as a whole, the side opposite to the lens 22 (front side in FIG. 1A) does not need to be black. You may

Furthermore, the number and shape of the engaging portions are not limited to those of the one aspect of the above disclosure, and various modifications are possible. As an example, in the eyeglass shield 10, which is one aspect of the above disclosure, as best shown in FIG. . In other words, it can be considered that the pair of locking portions 15 are arranged on an arc of a curve extending horizontally in FIG. 1C. Therefore, it is possible to engage the spectacles by providing one curved engagement portion corresponding to the arc of the curve. However, by providing a pair of locking portions 15 as in one aspect of the present disclosure, there is an advantage that the eyeglasses 20 can be locked with balance by these locking portions 15 .

Cross-reference to related applications

This application claims priority based on Japanese Patent Application No. 2017-196631 filed with the Japan Patent Office on October 10, 2017, the entire disclosure of which is fully incorporated herein by reference.

Claims (6)

a body portion disposed in close proximity to one surface of one of the lenses of spectacles having a pair of lenses and a frame supporting the lenses, and providing a wearer of the spectacles with different optical properties than when the lenses alone are used; and a locking portion projecting from the body portion toward the one surface side of the lens and capable of being locked to the upper end portion of the rim of the frame or the upper end portion of the lens. 2. The eyeglass shield according to claim 1, wherein the main body shields one of the lenses. 3. The eyeglass shielding device according to claim 1, wherein a pair of said engaging portions are provided. The eyeglass shield according to any one of claims 1 to 3, wherein the engaging portion is provided so as to be movable in the vertical direction of the lens. 5. The shield for spectacles according to claim 1, further comprising a non-slip portion provided on the one surface side of the lens of the body portion and capable of coming into contact with the one surface of one of the lenses. closure. The eyeglass shielding device according to any one of claims 1 to 5, further comprising a balancer portion projecting upward from the upper end portion of the body portion.

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