JPH0724089Y2 - Optometry device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to an optometry device, and more specifically, to an optometry device including an optometry table and an operating means for operating the optometry table, and an optometer. The present invention relates to an optometry device in which

(Prior Art) In this type of optometry apparatus, there is a conventional optometer (for example, an eye refraction measuring instrument) itself equipped with an operating means capable of operating a visual acuity chart.

However, in the case of the optometry apparatus having such a configuration, in order to deal with a wide variety of visual acuity charts, the operation means must be provided with visual acuity chart keys corresponding to a wide variety of visual acuity charts in addition to the operation keys for the optometer. There is a problem that the configuration becomes complicated.

Further, in the configuration using such operation means, the operation means provided on the optometer side is arranged on the optometry table, and the chart is switched by operating the operation key in a state in which the operation means is connected to the optometer. Since the optical system of the optometer is switched, the operator cannot leave the table. As a result, it may be difficult to confirm the type of chart in the visual acuity chart, which is placed at a distance of about 5 m from the table, or it may be necessary to look back and confirm the chart each time the operation keys are operated. There was a problem that the operability was extremely poor.

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and it is possible to freely check the chart and the state of the optometer even while the optometry is being performed, so that the optometry can be performed easily. An object of the present invention is to provide an optometry apparatus capable of executing processing.

[Configuration of Device] (Means for Solving the Problem) An optometry apparatus of the present invention is based on an optometry table for displaying various charts for visual function measurement based on an optometry operation signal and an optometry operation signal. In an optometry apparatus having an optometer that forms an optometry optical system corresponding to the chart for the subject's eye, an operating unit that wirelessly sends an operation signal for optometry to the optometry apparatus and the optometry apparatus, and to the optometry table. A first receiving unit for receiving an operation signal from the operating unit provided and a second receiving unit for receiving an operation signal from the operating unit provided in the optometer are provided.

The operation means is configured to include a plurality of transmission units in the same housing for simultaneously transmitting operation signals to the visual acuity chart and the optometer that are respectively installed at distant positions.

The first reception unit of the visual acuity chart or the second reception unit of the optometry apparatus includes a reflection mirror that reflects an operation signal from the operation unit toward the second reception unit or the first reception unit. It is configured.

(Operation) The operation of the apparatus having the above configuration will be described below.

The operation means in this device wirelessly sends operation signals to the visual acuity chart and the optometer. The first receiving unit of the visual acuity chart and the second receiving unit of the optometer receive the operation signal from the operating means, respectively.

As a result, the visual acuity chart displays the visual function measurement chart according to the operation signal, and the optometer forms the optometry optical system according to the operation signal.

By such an operation, the examiner can freely move without being restricted by the arrangement of the visual acuity chart and the optometer to check the chart and the state of the subject, and the operability is extremely good. Become.

Moreover, since the operating means includes a plurality of transmitting units that simultaneously transmit the operation signals for the visual acuity table and the optometer,
It is possible to improve the operability by confirming the chart switching and switching the detection optical system of the optometer without changing the orientation or switching the chart without changing the orientation while interacting with the subject.

Further, the first receiving unit of the visual acuity chart or the second receiving unit of the optometry apparatus reflects a manipulation signal from the manipulation unit toward the second receiving unit or the first receiving unit. , The chart is switched by simply sending an operation signal from the operation means to either one of the first and second receiving sections.
Both of the switching of the optometry optical system can be performed at once, and the operability can be improved as in the case described above with the configuration using the operating means having only one transmitting unit.

(Embodiment) An embodiment of the present invention will be described below.

The optometry apparatus 1 shown in FIGS. 1 and 3 includes an internal illumination type visual acuity table 2 for displaying a variety of visual function measurement charts CH and an operation signal for switching the chart display of the visual acuity table 2 as an optical signal. A visual acuity chart device 4 comprising an operating means 3 for sending in a form,
It has an optometer (for example, an electric eye refraction measuring instrument) 5 combined with this visual acuity chart device 4.

As shown in FIG. 2, the visual acuity table 2 has a vertically long rectangular parallelepiped main body 2A, on the surface of which a chart CH attached to the film 10 is switchably displayed, and a first light receiving element is used. The receiver 6 is arranged below the film 10.

As shown in FIG. 3, the visual acuity table 2 is controlled by the first receiving unit 6, the visual acuity table control unit 7 that takes in the reception signal of the first receiving unit 6, and the visual acuity table control unit 7. It is equipped with a motor 8 and a lamp 9.

The motor 8 is adapted to drive the film 10 with the chart CH to be wound and switch the display of the chart CH.

Further, the lamp 9 illuminates the film 10 from the back surface.

As shown in FIG. 1, the operating means 3 is configured as a small box-shaped remote control system.

As shown in FIG. 3, this operation means 3 is used for chart CH
The visual acuity table changeover switch 11 including a group of keys provided with indications corresponding to various charts CH for switching the display, an operation control unit 12 for receiving an input signal from the visual acuity table changeover switch 11, and this operation A code processing unit 13 for converting the input signal into a coded signal corresponding to each chart CH under the control of the control unit 12, and the coded signal from the code processing unit 13 as an operation signal in the form of an optical signal. It is provided with two transmitters 14A and 14B using light emitting elements for transmitting. The transmitters 14A and 14B are arranged at both ends of the operating means 3 as shown in FIG.

The optometer 5 includes an optometer body 5A and an operation box 15.

As shown in FIG. 1, the optometer main body 5A has a box-like shape and is provided with a binocular lens portion 16 at a substantially central portion thereof, and a handle 17 for adjusting an interpupillary distance is provided above the binocular lens portion 16.

The optometer main body 5A includes the first and second erected from the table 18.
Supported by columns 30A and 30B.

The operation box 15 has a rectangular parallelepiped shape and is arranged on the table 18. On the upper surface of this operation box 15, operation keys 19
Also, a display unit 20 such as a liquid crystal display is provided.
Further, a second receiving section 21 using a light receiving element is arranged on the end surface of the operation box 15.

Further, in the operation box 15, as shown in FIG. 3, a control unit 22 for controlling the entire optometer 5 and the second receiving unit 21 are provided.
The discriminating means 23 for discriminating the content of the signal based on the operation signal received by the device is incorporated. Then, the control unit 22 sends a switching control signal corresponding to the chart CH indicated by the operation signal to the optometer main body 5A via the cable 24 based on the determination result of the determination unit 23.

Further, in the optometer body 5A, as shown in FIG. 3, a lens group 25 and a filter group 26, and a lens group 25 and a filter group 26 respectively corresponding to various charts CH are provided in the binocular lens unit 16. A switching optical unit 29 including a lens switching driving unit 27 and a filter switching driving unit 28 that perform switching drive based on the switching control signal is built in, and each chart CH is provided by the binocular lens unit 16 and the switching optical unit 29. The corresponding optometry optical system is formed.

Next, the operation of the optometry apparatus 1 having the above-described configuration will be described by taking as an example the case of displaying a chart CH for visual acuity test in which the c mark is combined with the visual acuity table 2 as shown in FIG. .

The operator of the optometry apparatus 1 operates the visual acuity table changeover switch 11 and presses the key corresponding to the chart CH. Then, the input signal from this key is sent to the code processing unit 13 under the control of the operation control unit 12, is converted into a coded signal here, and is then input to the transmission units 14A and 14B.

The transmitters 14A and 14B convert the coded signal into a form of an optical signal, and emit this as an operation signal to the first receiver 6 of the visual acuity table 2 and the second receiver 21 of the operation box 15, respectively.

The first receiving unit 6 converts the operation signal from the transmitting unit 14A into an electric signal and sends it to the visual acuity chart control unit 7. As a result, the chart CH is transferred to the motor 8 from the visual acuity chart control unit 7
A driving signal for driving the film 10 to be wound is sent so that it is displayed on the surface of No. 1, and the visual acuity table 2 becomes the state shown in FIG.

On the other hand, the second receiving unit 21, which has received the operation signal from the above-mentioned transmission unit 14B, converts this operation signal into an electric signal and sends it to the control unit 22.

The control unit 22 sends the input electric signal to the determination unit 23. Then, the determination means 23 determines that the electric signal indicates the chart CH, and returns the determination result to the control unit 22.

As a result, the control unit 22 sends the switching control signals corresponding to the chart CH to the lens switching drive unit 27 and the filter switching drive unit 28, respectively.

As a result, the lens switching drive unit 27 attaches the lens corresponding to the chart CH to the binocular lens unit 16, and the filter switching drive unit.
27 sets filters corresponding to the chart CH in the binocular lens unit 16, respectively. As a result, an optometry optical system corresponding to the chart CH is formed in the optometer main body 5A in association with the display operation of the visual acuity table 2, so that the examiner can perform any operation between the visual acuity table and the table 18. The chart CH and the optometry optical system of the optometry main body 5A can be freely switched only by operating the display changeover switch 11 of the operation means 3 at the position.

Therefore, the examiner can freely move without being restricted by the arrangement of the visual acuity table 2 and the optometer 5 to check the chart CH and the state of the subject, and the operability becomes extremely good. .

Further, the operation means 3 simultaneously sends out an operation signal 2
Since the individual transmitters 14A and 14B are provided,
Freely move between and
Optometer 5 without changing the direction while confirming the switching of
The optometry optical system can be switched, or the chart CH can be switched without changing the direction while interacting with the subject, and operability can be improved.

As described in detail above, according to the device of this embodiment, the visual acuity table 2
The operating means 3 is provided on the side of the eye, and the discriminating means 23 for discriminating the operating signal from the operating means 3 on the side of the optometer 5 and the switching optical means 29 for setting a lens or a filter on the binocular lens unit 16 based on the discrimination result. As a result, it is possible to link any visual acuity table 2 with the optometer 5.

In other words, it becomes possible to interlock the existing visual acuity table 2 and the operating means 3 with the newly replaced optometer 5.

Further, the visual acuity table changeover switch 11 of the operation means 3 can also be adapted to different optometers 5 in a preset state, and does not become complicated unlike the operation means of the conventional example.

Next, a second embodiment of the present invention will be described with reference to FIG.

Incidentally, in the optometry apparatus 1A shown in the figure, those having the same functions as those of the optometry apparatus 1 shown in FIG. 1 are designated by the same reference numerals.

This optometry apparatus 1A differs from the optometry apparatus 1 in that the operation box 15 is provided with a transmitter 31 that sends a switching control signal as an optical signal to the optometry apparatus body 5A, and the optometry apparatus body 5A is also provided.
That is, a receiving unit 32 for receiving the optical signal is provided on the surface of the.

That is, the optometry apparatus 1A is characterized in that the cable 24 is omitted and the signal transmission from the operation box 15 to the optometer body 5A is wireless.

With the optometry apparatus 1A having such a configuration, the optometry apparatus 1 is also available.
The same effect as in the case of can be exhibited.

Next, a third embodiment of the present invention will be described with reference to FIG.

In addition, in the optometry apparatus 1B shown in the same figure, those having the same functions as those of the optometry apparatus 1 shown in FIG. 1 are designated by the same reference numerals.

This optometry apparatus 1B differs from the optometry apparatus 1 in that the operating means 3 and the operation box 15 are connected using the connection cables 41A, 41B and the connector 42, and an operation signal is sent to the operation box 15 in the form of an electric signal. By doing so, the operation box 15 is provided with the transmitter 43 for transmitting the operation signal, and the transmitter 43
That is, the operation signal is sent to the first receiving unit 6 of the visual acuity table 2 in the form of an optical signal.

With the optometry apparatus 1B having such a configuration, the optometry apparatus 1 is also provided.
The same effect as in the case of can be exhibited.

Next, a fourth embodiment of the present invention will be described with reference to FIG.

Incidentally, in the optometry apparatus 1C shown in the same figure, those having the same functions as those of the optometry apparatus 1 shown in FIG. 1 are designated by the same reference numerals.

The optometry apparatus 1C is different from the optometry apparatus 1 in that the operating means 3A having the transmitting section 14B only at one end is used, and the second receiving section 21 for receiving an operation signal from the operating means 3A. Operation box 15 with a reflection mirror 45 on the side end surface
It is that A is used.

According to this optometry apparatus 1C, one transmitting unit 14B uses the reflecting action of the reflecting mirror 45 shown in FIG. 6 for the visual acuity table 2 and the operating box 15A which are located in opposite directions with respect to the operating means 3A. It is possible to link the visual acuity table 2 and the optometer 5 simply by sending an operation signal in one direction, and the visual acuity table 2 and the detector 5 can be operated by using the operation means 3A provided with one transmitting unit 14B.
And can be operated all at once, and operability can be improved.

In this case, contrary to the case described above, the reflection mirror 45 is arranged near the first receiving unit 6 of the visual acuity table 2, and the operating unit is sent from the operating means 3A to the first receiving unit 6 and the reflecting mirror 45. However, as in the case described above, the operability can be improved.

FIG. 7 shows a projection type visual acuity table 50 which is another example of the visual acuity table.

This projection-type visual acuity table 50 includes a projector 51 and
Various charts inside the projector 51
A large number of switchable panels with CH, a light source and a projection optical system are provided, and the chart CH is projected on the screen 52 based on the operation signal incident on the first receiving unit 6.

The above-described respective optometry devices 1, 1A, 1B, 1C can also be configured by using such a projection-type visual acuity table 50.

The present invention can be variously modified in addition to the above-described embodiment.

For example, a configuration may be employed in which the operation unit 3 is provided with a transmission unit that transmits an operation signal in the form of radio waves, infrared rays, or the like, and the visual acuity table 2 and the operation box 15 are provided with a reception unit that receives the operation signal.

[Effects of the Invention] According to the present invention described in detail above, the following effects are achieved.

According to the invention described in claim 1 of the utility model registration, the examiner is free to move freely without being restricted by the arrangement of the visual acuity chart and the optometer to check the chart and the state of the examinee. Thus, it is possible to provide an optometry apparatus which has excellent operability.

According to the invention as claimed in claim 2 of the utility model registration, without changing the orientation while confirming the chart switching, the eye examination optical system of the optometer is not changed, or the orientation is changed while interacting with the examinee. It is possible to provide an optometry apparatus that can switch charts and improve operability.

According to the invention as claimed in claim 3 of the utility model registration, an optometry apparatus capable of improving the operability as in the case described above with the configuration using the operating means having only one transmitting unit is provided. can do.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment device of the present invention, FIG. 2 is a front view of a visual acuity table of the same device, FIG. 3 is a block diagram of the device, and FIG. 4 is a second view of the present invention. FIG. 5 is a perspective view of a third embodiment device of the present invention, FIG. 6 is a perspective view of a fourth embodiment device of the present invention, and FIG. It is a perspective view of an example. 1 ... optometry device, 2 ... visual acuity table, 3 operating means, 4 ... visual acuity table device, 5 ... optometer, 23 ... discrimination means, 29 ... switching optical means.

Claims (3)

[Scope of utility model registration request] 1. A visual acuity table for displaying various charts for measuring visual function based on an operation signal for eye examination, and an eye examination optical system corresponding to the chart for the eye to be examined based on the operation signal for eye examination. In an optometry apparatus having an optometer, an operating means for wirelessly transmitting an optometry operation signal to the optometry table and an optometry device, and a first reception for receiving an operation signal from the operating means provided in the optometry table. And a second part for receiving an operation signal from the operation means provided in the optometer.
An optometry apparatus, comprising: 2. The operating means comprises a plurality of transmitters in the same housing for simultaneously sending operation signals to the visual acuity chart and the optometer installed at distant positions. The described optometry device. 3. The first receiving section of the visual acuity chart or the second receiving section of the optometry apparatus reflects an operation signal from the operating means toward the second receiving section or the first receiving section. The optometry apparatus according to claim 1, further comprising a reflecting mirror that does.