JPH06125873A - Ophthalmoscopic eye examining device - Google Patents

Abstract

PURPOSE:To constitute the device so that an ophthalmoscopic eye examining means can be fixed at a prescribed inclination angle in a stable state, and an eye examination of near vision can be performed surely in a state being approxiamate to an actual use state of spectacles. CONSTITUTION:In the ophthalmoscopic eye examining device 1 in which an eye examining means having an optical unit is supported in turnably by a supporting member, eye examining means 6A, 6B are turned within a range from a vertical position to a prescribed inclination angle extending over the supporting member 5 and the eye examining means 6A, 6B, and also, a restricted turning means for fixing the eye examining means 6A, 6B is provided in a turning position. According to this constitution, the eye examining means 6A, 6B can be turned arbitrarily in a stable state within a range from the vertical position to the prescribed inclination angle, and by arranging the eye examining means 6A, 6B in a state being approximate to an actual use state of spectacles, an eye examination of near vision can be performed surely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subjective eye examination apparatus, and more particularly, to a subjective eye examination apparatus capable of performing a subjective eye examination in a state similar to the actual use state of eyeglasses.

[0002]

2. Description of the Related Art Generally, when a person wearing a progressive-focus lens or eyeglasses with a small lens capable of near vision performs near vision in order to actually read a book or write letters, the line of sight is used. It is common to look at the paper by shifting the eye diagonally downward or converging both eyes.

Therefore, even in the subjective optometry apparatus for subjectively measuring the visual acuity of a person, the optometry is required to be performed in a state similar to the actual use state of the spectacles.

[0004]

However, in the prior art, the optometry means itself is inclined, the interval of the optometry window is adjusted, and further, the optical axis of the optical unit is changed for the convergence test. The reality is that there is no possible subjective optometry device.

Therefore, according to the present invention, it is possible to set the subjective type eye examining means to a predetermined inclination angle in a stable state and to change the optical axis of the optical unit in a predetermined direction.
An object of the present invention is to provide a subjective optometry apparatus that can surely perform optometry in a state similar to the actual use state of eyeglasses.

[0006]

The invention according to claim 1 is
A subjective optometry apparatus that rotatably supports an optometry means having an optical unit by an indicating member, the optometry means extending from the vertical position to a predetermined tilt angle over the indicating member and the optometry means. A restraining and rotating means for rotating and fixing the eye examination means is provided at the rotating position.

According to a second aspect of the present invention, there is provided a subjective optometry apparatus in which an optometry means having an optical unit is rotatably supported by a pointing member, and the observatory means is provided rotatably corresponding to the optometry means. It is provided with a visual target.

According to a third aspect of the present invention, there is provided a subjective optometry apparatus in which a pair of optometry means each having an optical unit are supported by an indicating member, and the pair of optometry means are in a range from a vertical position to a predetermined inclination angle. Restraint rotating means for rotating and fixing the optometry means at the rotation position, spacing adjusting means for adjusting the spacing between the pair of optometry means, and rotational drive for rotating the pair of optometry means in the convergence direction or the divergence direction, respectively. And means are provided.

[0009]

According to the subjective optometry apparatus according to the first aspect, the optometry means is rotated in the range from the vertical position to a predetermined inclination angle over the support member and the optometry means, and at the pivoting position. Since the restraining and rotating means for fixing the optometry means is provided, the optometry means can be arranged in a state similar to the actual use state of the spectacles to surely perform the near vision optometry.

According to the subjective optometry apparatus described in claim 2,
Since the index for near vision is rotatably attached to the optometry means, the optometry means is arranged in a state similar to the actual use state of the spectacles to ensure the near vision optometry. I can carry it out.

According to the subjective optometry apparatus described in claim 3,
The pair of optometry means can be rotated in a range from the vertical position to a predetermined tilt angle by the restraining rotation means and can be fixed at the rotation position, and the pair of optometry means can be rotated respectively in the convergence direction or the divergence direction by the rotation driving means. Further, since the distance between the pair of optometry means can be adjusted by the distance adjusting means, the optometry means can be arranged in a state close to the actual use state of the spectacles to perform an optometry such as a convergence test or near vision.

[0012]

EXAMPLES Examples of the present invention will be described in detail below.

The subjective optometry apparatus 1 shown in FIG. 1 is a pair of left and right subjective optometers supported by an optometry table 2 arranged horizontally on a base 3 and a supporting member 5 mounted on the optometry table 2. An optometry means 6A capable of performing a square optometry,
6B and operation means 7 provided with a ten-key pad arranged on the optometry table 2, an index switching key, a display unit, and the like.

The optometry means 6A, 6B are provided with a viewing window 8 for the examinee, and the turret type optometry lens group or optical axis is provided inside the optometry means 6A, 6B. A lens group for optometry (for example, one using a zoom lens) whose power changes by moving the lens in the direction is built in.

Eye examining means 6A, 6 for the support member 5
The mounting mode of B is as shown in FIGS.

That is, the support member 5 is arranged horizontally,
In addition, an interval adjustment drive unit 10 that supports the shaft body 9 while being rotationally driven by a motor (not shown) is attached. Then, from each end of the shaft body 9, the respective optometry means 6A, 6
Restraint rotation means 11A and 11B having a symmetrical structure for rotating the optometry means 6A and 6B in a range from a vertical position to a predetermined tilt angle over B and fixing the optometry means 6A and 6B to the rotation position. It is provided.

The restraining and rotating means 11A has a rotary shaft 12 arranged horizontally above the optometry means 6A, a worm wheel 13 fixed to the rotary shaft 12 and a U-shaped protruding piece arranged in parallel. The hanging body 14 in which the rotary shaft 12 is penetrated through 14a and 14b, one projecting piece 14a is screwed into an end portion of the shaft body 9, and a bottom driving piece 14c is attached with a motor 15 for tilt drive. A worm 16 fixed to a driving shaft of the motor 15 and meshing with the worm wheel 13 is provided.

The other restraining and rotating means 11B has the same structure as the restraining and rotating means 11A.

When performing the near vision optometry of the subject using the subjective optometry apparatus 1 having the above-described configuration, for example, the operating means 7 is operated to rotate the motor 15 for a predetermined time. Then, from the worm 16 to the worm wheel 1
3, the worm wheel 13, the rotary shaft 12, and the optometry means 6A, 6B are also inclined by a predetermined angle (for example, 30 degrees to 45 degrees) as shown in FIG. Then, even if a reaction force from the worm wheel 13 is applied to the worm 16, the worm 16 does not rotate in the reverse direction, so that the eye examining means 6A and 6B are surely stopped at the inclined position.

Thus, the optometry means 6A, 6B can be arranged in a state similar to the actual use state of the spectacles, and the near vision optometry of the subject can be reliably performed.

Next, another embodiment of the present invention will be described with reference to FIGS.

The subjective optometry apparatus 1A shown in the figure is different from the optometry means 6A (also for the optometry means 6B) in that
It is characterized by including an index support member 22 having a near-field index 21 rotatably attached, and a weight 23 attached to the index support member 22.

That is, the optometry means 6A (similarly to the optometry means 6B) is rotatably supported by the suspending tool 24 mounted vertically on the support member 5.

The supporting position of the optometry means 6A by the suspending tool 24 is set slightly above the position of the center of gravity of the optometry means 6A.

Further, the index support member 22 is formed in an L shape, the near-vision index 21 is attached to the protruding piece 22a, and the end of the attachment piece 22b is attached to the optometric means 6A.
Rotatably attached to the upper end of the
A weight 23 having a predetermined weight is attached to b. When the index 21 for near vision is not used, as shown in FIG. 5, the attachment piece 22b of the index support member 22 is set to be tilted slightly rearward so that the weight of the weight 23 is vertically downward. There is.

When performing the near vision optometry of the subject using the subjective optometry apparatus 1A having such a configuration, the index support member 22 is rotated with respect to the optometry means 6A as shown in FIG. The optometry means 6A is slanted at a position where the weight of the weight 23 and the optometry means 6A are balanced. As a result, the optometry means 6A (similarly to the optometry means 6B) can be arranged in a state similar to the actual use state of the eyeglasses to reliably perform the near vision optometry of the subject.

Incidentally, in order to stabilize the inclined position of the optometry means 6A, a restraining means such as an electromagnetic clutch (not shown) may be added.

FIG. 7 shows another arrangement example of the near-vision index 21.

That is, the optometry table 6 is provided on the optometry table 2.
A support arm 31 in an inclined position facing B is attached to the optometry table 2 so as to be able to move in and out.
The index 21 is attached to the tip of the.

In the case of this construction, if the tilting movement of the optometry means 6A, 6B and the moving movement of the index 21 are interlocked, the near vision optometry of the subject can be surely performed.

Next, still another embodiment of the present invention will be described with reference to FIGS.

In the subjective optometry apparatus 1B shown in the same drawing, the construction of the subjective optometry apparatus 1 is changed to a pair of optometry means 36A, 36B supported by a U-shaped external holder 40 from a vertical position to a predetermined inclination angle. Restraining rotation means 41 for rotating the eye examination means at the rotation position and for adjusting the distance between the pair of eye examination means 36A, 36B.
2 and rotation driving means 43 for rotating the pair of optometry means 36A and 36B in the radial direction or the divergence direction, respectively.

The restraining and rotating means 41 rotatably mounts a rotating box 51 having a rectangular parallelepiped shape and an opening downward on the U-shaped external holder 40 through shafts 52 and 53 in a vertical arrangement and an inclined arrangement. Along with the L attached to the external holder 40
A rotation motor 55 held by a support plate 54 in the shape of a ring, a driving gear 56 attached to a driving shaft of the rotation motor 55,
The driven gear 57 is attached to the shaft 53 protruding from the rotating box 51 through the external holder 40, and the driving gear 56 and the driven gear 57 are meshed with each other.

As shown in FIG. 10, the interval adjusting means 42 is a shaft body having a pair of screw portions 61, 62 rotatably arranged along the length direction of the rotating box 51. 63 and a shaft body 63 arranged in the center of the rotating box 51.
And a pair of moving plates 65 that are downwardly protruded from the opening of the rotating box 51 while screwing the upper portions of the space adjusting drive unit 64 for rotating and driving the screw units 61 and 62 of the shaft body 63, respectively.
66 and a pair of flat plates 67 and 68 attached to the lower ends of the pair of moving plates 65 and 66, respectively, and by rotating the shaft 63 by the interval adjusting drive unit 64, the pair of moving plates 65 and 66 and the pair of flat plates 67, 68 are arranged to approach or separate from each other.

As shown in FIG. 10, the rotation driving means 43 is adapted to horizontally rotate a pair of optometry means 36A, 36B having a built-in optical unit for subjective examination.

That is, the rotation driving means 43 has a pair of optometry means 36A whose upper ends are rotatably attached to the pair of flat plates 67 and 68 and whose lower ends are fixedly attached to predetermined positions of the pair of optometry means 36A and 36B, respectively. , 36B rotatably supporting the shafts 36, 36B, horizontal driven gears 73, 74 attached to the vertical shafts 71, 72, and a pair attached to the lower surfaces of the pair of flat plates 67, 68, respectively. Motor 7
5, 76 and horizontal driving gears 77, 78 attached to the respective driving shafts of the pair of motors 75, 76, and transmit the rotational force of the pair of motors 75, 76 to the pair of vertical shafts 71, 72. The pair of levers and the pair of vertical shafts 71 and 72 can rotate the pair of optometry devices 36A and 36B in the horizontal direction.

In the figure, 36C and 36D are optometry windows provided in the pair of optometry means 36A and 36B, respectively.

Next, the control system of the subjective optometry apparatus 1C will be described with reference to FIG.

The subjective optometry apparatus 1C includes a program memory 82 storing an operation program, a control unit (CPU) 81 for controlling the entire operation based on the operation program,
The control means 80 comprises an interface 83 for wirelessly taking in information from the operating means 7.

The control unit 81 is provided with the rotation motor 55.
The space adjustment drive unit 64 is connected to the motors 75 and 76 to control them.

Next, the operation of the subjective optometry apparatus 1C will be described with reference to FIG.
It will be described with reference to FIGS.

According to this subjective optometry apparatus 1C, the rotation motor 55 in the restraining rotation means 41 is rotated under the control of the control unit 81, and the rotational force thereof is used as the driving gear 56 and the driven gear 5.
By transmitting to the rotating box 51 via 7, the pair of optometry means 36A, 3A together with the rotating box 51, as shown in FIG.
6B can be constrained by rotating the vertical arrangement from a vertical arrangement to a predetermined inclined arrangement, and thus, similar to the case of the subjective optometry apparatus 1 and the subjective optometry apparatus 1A described above, the 6B for near vision as shown in FIG. It is possible to surely execute the optometry using the optotype 21 while making the subject aware that the optometry is near vision.

In the case of the optometry using the near vision optotype 21, prisms (not shown) are inserted into each optical unit in the pair of optometry means 36A and 36B.

The motors 75 and 76 in the rotation driving means 43 are driven under the control of the control unit 81, and the rotational force of these motors is driven to the horizontal driving gears 77 and 78 and the horizontal driven gears 73 and 78.
By transmitting to the vertical shafts 71 and 72 via 74, the pair of optometry means 36A and 36B are moved to the directions indicated by arrows a and b shown in FIG.
It becomes possible to perform the convergence test of the left and right eyes EL and ER shown in FIG. 14 while setting various convergence angles θ by rotating in the direction.

At this time, the shaft body 63 is rotationally driven by the space adjusting drive unit 64 in the space adjusting means 42 to adjust the space between the pair of moving plates 65 and 66 and the pair of flat plates 67 and 68, thereby The intervals of the optometry windows 36C, 36D of the optometry means 36A, 36B can be finely adjusted according to the convergence of the sight lines of the left and right eyes EL, ER, and the convergence test of the left and right eyes EL, ER can be performed in a more natural state. . Also, each optometry window 3
Since the intervals of 6C and 36D can be adjusted according to the distance between the pupils of the left and right eyes EL and ER, optimum optometry according to various subjects is possible.

In this case, the distance between the pupils and the vergence angle θ which are known in advance are input from the operating means 7, and based on these, the pair of optometry means 36A, 36B are set to the corresponding intervals and the corresponding rotation angles. It can also be set automatically.

Furthermore, the respective operations of the restraining and rotating means 41, the space adjusting means 42, and the rotation driving means 43 are combined to rotate the pair of optometry means 36A and 36B to the inclined arrangement and to rotate in the direction of convergence or divergence. Since the movement and the adjustment of the interval between the optometry windows 36C and 36D can be performed with time or simultaneously,
A near vision inspection of a spectacle wearer using a bifocal lens or a multifocal lens can be performed in a substantially natural state.

The present invention is not limited to the above-described embodiments, but various modifications can be made within the scope of the gist thereof.

[0049]

According to the present invention described in detail above, since it has the above-mentioned structure, the following effects can be obtained.

According to the subjective optometry apparatus described in claim 1,
By providing the restraint rotation means, the optometry means is arbitrarily set within a range from a vertical position to a predetermined tilt angle, and
It is possible to provide a subjective optometry apparatus that can be rotated in a stable state, and arranges the optometry means in a state similar to the actual use state of the spectacles to reliably perform nearsighted optometry.

According to the subjective optometry apparatus described in claim 2,
Again, it is possible to provide the subjective optometry apparatus capable of surely performing the near vision optometry by disposing the optometry means in a state similar to the actual use state of the spectacles.

According to the subjective optometry apparatus described in claim 3,
By the operation of the restraint rotating means, the space adjusting means, and the rotation driving means,
It is possible to provide a subjective optometry apparatus that can reliably perform an optometry such as a convergence test or near vision.

[Brief description of drawings]

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

FIG. 2 is an enlarged cutaway front view showing an optometry unit and a restraining rotation unit of the apparatus of this embodiment.

FIG. 3 is a partially cutaway cross-sectional view showing an optometry unit and a restraining rotation unit of the apparatus of this embodiment.

FIG. 4 is a cross-sectional view showing the tilting operation of the optometry means of the apparatus of this embodiment.

FIG. 5 is a side view of the optometry means in the apparatus of another embodiment of the present invention.

FIG. 6 is a side view showing the tilting operation of the optometry means in the apparatus of another embodiment of the present invention.

FIG. 7 is a perspective view showing another arrangement example of a near vision index.

FIG. 8 is a perspective view showing a device according to still another embodiment of the present invention.

9 is a perspective view showing the optometry means and its periphery in the apparatus of the embodiment shown in FIG.

10 is a cross-sectional view showing the optometry means and its periphery in the apparatus of the embodiment shown in FIG.

11 is a block diagram showing a control system of the embodiment apparatus shown in FIG.

FIG. 12 is an operation explanatory diagram of the embodiment apparatus shown in FIG.

13 is an explanatory diagram of the operation of the apparatus of the embodiment shown in FIG.

14 is an explanatory diagram of a case where a congestion test is performed by the apparatus of the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Subjective optometry apparatus 1A Subjective optometry apparatus 1B Subjective optometry apparatus 5 Supporting members 6A, 6B Optometry means 11A, 11B restraining rotation means 21 optotypes 23 weights 36A, 36B optometry means 41 restraining rotation means 42 interval adjusting means 43 Rotation drive means

Claims (3)

[Claims] 1. A subjective optometry apparatus in which optometry means having an optical unit is rotatably supported by a pointing member.
A restraint rotation means is provided across the pointing member and the optometry means for rotating the optometry means in a range from a vertical position to a predetermined tilt angle and for fixing the optometry means at the rotation position. Conscious eye examination device. 2. A subjective optometry apparatus in which optometry means having an optical unit is rotatably supported by a pointing member.
A subjective eye examination apparatus comprising a near vision target rotatably provided corresponding to the eye examination unit. 3. A subjective optometry apparatus that supports a pair of optometry means each having an optical unit by an indicating member.
Constraint rotation means for rotating the pair of optometry means in a range from a vertical position to a predetermined inclination angle and fixing the optometry means at the rotation position, interval adjusting means for adjusting the spacing between the pair of optometry means, and The optometry device according to claim 1, further comprising: a rotation driving unit that rotates the optometry unit in each of the convergence direction and the divergence direction.