JPH07194540A - Optometric device - Google Patents

Abstract

PURPOSE:To provide an optometric device which can save space, reduce costs and enhance the efficiency of an optometric process. CONSTITUTION:In this optometric device 1 having a display means 9 for displaying optometric information, the display means 9 serves also as the display portion of an optometric means by which an eye to be examined is subjected to optometry and as the display portion of a lens meter 6 which measures the optical characteristics of a lens L. With this constitution, hardware and software can be simplified and the device cost reduced by the use of the common display means 9, and both the optometric information and information about the optical characteristics of the lens can be visually recognized on the same screen and the efficiency of optometry is enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optometry apparatus, and more particularly, to an optometry apparatus that saves space and improves the efficiency of optometry.

[0002]

2. Description of the Related Art As a conventional space-saving optometry apparatus, a plurality of mirrors are used for an optometry table.
a visual acuity table presenting means that secures an optometry distance of 5 m to 5 m is incorporated, and the subjective optometry means is provided on the optometry table.
It is known that the objective optometry means is attached in a predetermined arrangement.

In the case of such an optometry apparatus, the occupied area is 1
It becomes about 3 tsubo, and the visual acuity device is placed on the optometry table 3m to 5m.
Compared with the conventional optometry device that is placed in front of the
It can be reduced to about 3.

[0004]

However, in the case of the above-described optometry apparatus, the size of the optometry table itself of this optometry apparatus is considerably increased due to the necessity of ensuring an optometry distance of 3 m to 5 m, and a plurality of mirrors are used. There is a problem that the configuration of the optical system including the above is complicated and the device cost is increased.

Further, in the case of the above-described optometry apparatus, there is no lens measuring function, and when measuring the optical characteristics of the spectacle lens worn by the subject, the user should go to a lens meter at a position different from the optometry apparatus. It is necessary to perform the eye examination and the lens measurement individually, which is extremely complicated.

Further, in the case of the above-described optometry apparatus, since the subjective optometry means and the objective optometry means are individually configured and incorporated in the optometry table, the hardware such as the wiring system and the software such as the control program can be used. Despite including common elements, these become individual,
There is a problem that the optometry processing operation for the eye to be inspected is complicated.

Therefore, according to the present invention, further space saving and cost reduction can be achieved by simplifying the overall structure, and the optometry and the lens measurement can be performed on the subject's eye in parallel and efficiently. It is an object of the present invention to provide an optometry device capable of improving the processing efficiency.

[0008]

The invention according to claim 1 is
An optometry device having a display unit for displaying optometry information for subjective optometry, wherein the display unit is a display unit of the optometry unit for performing an optometry of an eye to be examined, and a display unit of a lens meter for measuring optical characteristics of a lens. It is configured to also serve as.

According to a second aspect of the present invention, the display means is
The optometry means and the lens meter are both installed on the side wall of the housing.

According to a third aspect of the present invention, the optometric means is
The configuration is selected from a subjective optometry means including an optical system for converting a projection luminous flux of an optotype into a parallel luminous flux using a concave mirror or a combination of the subjective optometry means and the objective optometry means.

According to a fourth aspect of the present invention, the subjective optometry means, the objective optometry means and the lens meter, which constitute the optometry means, are operated by time division control of a common control means. Is.

[0012]

The operation of each invention having the above-mentioned structure will be described below.

According to the optometry apparatus according to the first aspect, the display section of the optometry section for performing the subjective or objective optometry of the eye to be examined by the display section and the display section of the lens meter for measuring the optical characteristics of the lens. Since the optometry means is used to display the optometry information for the subjective optometry and the information on the optical characteristics of the lens by the lensmeter simultaneously or selectively on the same screen, the hardware by sharing the display means is used. Wear and software can be simplified and the cost of the apparatus can be reduced, and the optometry information and the optical characteristic information of the lens can be visually confirmed on the same screen, and the optometry efficiency can be improved.

According to the optometry apparatus of the second aspect, since the display means is disposed on the side wall of the housing in which both the optometry means and the lens meter are incorporated, the subject who is performing the optometry by the optometry means. This display means can be visually recognized in the vicinity of, and it becomes easy to interact with the examinee, allow the examinee to visually recognize the display means, etc., and improve the optometry efficiency.

According to a third aspect of the optometry apparatus, the optometry means includes an subjective optometry means, an objective optometry means or an optometry means including an optical system for converting a projection light flux of an optotype into a parallel light flux using a concave mirror. Since the configuration is selected from the combination of the subjective optometry means and the objective optometry means, in particular, the configuration including the subjective optometry means including an optical system for converting the projection light flux of the target into a parallel light flux using the concave mirror. By doing so, the optometry distance of the subjective optometry can be secured by using a casing smaller than the conventional device, and the space of the entire device can be saved.

According to the optometry apparatus of the fourth aspect, the subjective optometry means and the objective optometry means which constitute the optometry means,
Since the lens meter and the lens meter are operated by the time-division control of the common control means, the common elements of the hardware such as the wiring system and the software such as the control program are increased, and the simplification of the hardware and the software and the device. The cost can be reduced, and the optometry processing time for the eye to be examined can be shortened.

[0017]

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

The optometry apparatus 1 shown in FIGS. 1 to 3 comprises a box-shaped casing 4 arranged on a pedestal 2 having casters 3 with a lock and having a pentagonal planar shape.

As shown in FIG. 5, a square-shaped viewing window 5 is formed on the subject surface 4a of the housing 4 facing the subject M.
Is opened, and a chin rest 11 for the subject M is arranged below the viewing window 5. The chin rest 11 can be inserted into and removed from the subject surface 4a.

The examiner surface 4b adjacent to the examinee surface 4a
Is a lens meter 6 for measuring the optical characteristics of various lenses.
, Printer 7, floppy disk drive 8,
A display means 9 such as a liquid crystal display or a CRT display is incorporated.

Further, an inspector table 10 is provided so as to project laterally from the lower portion of the inspector surface 4b, and the upper surface of the inspector table 10 is utilized as a consulting space. A mouse 12 as an input means is arranged on the examiner table 10, and the examiner table 10 is also provided.
An examinee switch 13 operated by the examinee M is provided at the end on the examinee surface 4a side.

The housing 4 incorporates subjective optometry means 15 such as a phoropter and objective optometry means 16 such as an autorefractometer.

As shown in FIGS. 1 to 3, the subjective optometry means 15 is a state in which the optotype projection means 17 arranged in the housing 4 and the viewing window 5 outside the subject surface 4a. And the position of the eye examination unit 18 that supports the eye examination unit 18 and faces the sight window 5 and the sight window 5 of the subject surface 4a, as shown in FIGS. An optometry unit displacing section 19 for displacing the retracted position, a movable fog lens 20 arranged on the housing 4 side of the optometry unit 18, and a fog lens 20 for driving the optometry unit 18 are shown in FIG. And a lens displacing section 21 for fog shown in FIG.

As shown in FIG. 3, the eye examination unit 18 is provided with eye examination windows 18a and 18b for the eye E to be inspected.
The subject M puts his or her chin on the chin rest 11 and opposes the subject's eye E to the optometry windows 18a and 18b so as to face the optometry unit 1
The inside of the housing 4 can be seen through 8.

As shown in FIGS. 1 and 2, the target projecting means 17 projects the target light flux of various targets arranged in the upper part of the housing 4 downward. Light source unit 3
1 and the target projection light source unit 31 in the lower part of the housing 4.
And a concave mirror 32 that reflects the target light flux upward as a parallel light flux, and a half mirror (or infrared reflection, visible light) that is arranged in an inclined state of 45 degrees at an intermediate position between the target projection light source unit 31 and the concave mirror 32. Light reflection or partial reflection dichroic mirror) 33.
Thus, the target light flux from the target projection light source unit 31 is transmitted, and the parallel light flux from the concave mirror 32 is reflected toward the optometry windows 18a and 18b of the optometry unit 18. The arrangement of the target projection light source unit 31 and the concave mirror 32 may be water.

The objective optometry means 16 is arranged on the left side of the half mirror 33 in the housing 4 in FIG. 1, and the near-infrared light passes through the half mirror 33 and faces the observation window 18 to be examined. Of the eye E, and the reflected light flux from the eye E is incident through the half mirror 33 to perform objective measurement of the eye E to be inspected.

Further, as shown in FIG. 2, a trial lens unit 25 and a hanging frame accommodating a hanging frame for the examinee M are provided on the side of the adjacent surface 4c adjacent to the examiner surface 4b of the housing 4. The unit 26 is arranged.

FIG. 4 shows a control system of the optometry apparatus 1, which shows the operations of the subjective optometry means 15, the objective optometry means 16, the lens meter 6, the display means 9, the printer 7, and the floppy disk drive 8. A control unit 42 including a CPU 40 that controls in time division and at high speed and a program memory 41 that stores a control program that controls the overall operation of the optometry apparatus 1 is provided, and each of the subjective optometry units 15 is provided in the CPU 40. The mouse is connected with connecting elements
2. The switch 13 for the subject is connected.

Reference numeral 45 in FIG. 1 is a control box.

Next, the operation of the optometry apparatus 1 will be described.

First, the case where the objective measurement of the eye E of the subject M and the measurement of the lens L of the spectacles worn by the subject M are simultaneously performed by the optometry apparatus 1 will be described with reference to FIGS.
And FIG. 9 will be described.

When performing objective measurement of the eye E to be inspected, the optometry unit displacement section 19 is driven under the control of the CPU 40 to move the optometry unit 18 to the observation window 5 as shown in FIG.
And the cloud lens 20 is driven to drive the cloud lens 20 to the side of the viewing window 5. In FIG. 5, 18a is a forehead allowance.

In this state, as shown in FIG.
The chin of the subject is placed on the chin rest 11 and the eye E of the subject M is examined.
To the viewing window 5 and face the objective optometry means 16.

Then, the objective optometry means 16 is operated under the control of the CPU 40, and near-infrared light is applied to the fundus of the eye E to be inspected which faces the viewing window 18 through the half mirror 33, and from the fundus. The reflected light flux of is incident through the half mirror 33 and the objective measurement of the eye E to be inspected is performed.

At this time, the glasses worn by the subject M are set on the lens meter 6 in parallel with the operation of the objective optometry means 16, and the optical characteristics of the lens L are measured.

As a result, under the control of the CPU 40, the measurement result of the objective optometry means 16 and the measurement result of the lens meter 6 are arranged on the examiner surface 4b of the casing 4 as shown in FIG. The information is also displayed on the screen of the display unit 9, and the examiner can obtain the same optometry information by the objective optometry unit 16 and the optical characteristic information of the lens L by the lens meter 6 near the subject M. It can be visually recognized on the screen, and the efficiency of the optometry for the subject M can be improved.

Further, according to the optometry apparatus 1, since the display section for the objective optometry section 16 and the lens meter 6 is made common by the display section 9, the hardware and software are simplified, and the optometry apparatus is constructed. The cost can be reduced by 1.

In the objective measurement by the objective type optometry means 16 described above, if the alignment accuracy with respect to the objective type optometry means 16 of the eye E to be examined is not so strictly required, FIG.
It is also possible to remove the chin rest 11 from the housing 4 as shown in FIG.

Further, the objective measurement by the objective optometry means 16 is performed while the optometry unit 18 is facing the viewing window 5.
It is also possible to perform this without the optometry lens that faces the optometry windows 18a and 18b of the optometry unit 18. Further, the optometry lens may be left in, and the measurement result considering the frequency may be used.

Next, a case in which the subjective measurement of the eye E of the subject M and the measurement of the lens L of the spectacles worn by the subject M are simultaneously performed by the optometry apparatus 1 will be described with reference to FIGS.
This will be described with reference to 0.

In this case, as shown in FIG. 8, the chin of the examinee M is placed on the chin rest 11 so that the examinee's eye E of the examinee M faces the sight window 5 and the CPU 40 Based on the control of 1., the target projecting means 17 is operated, and the target light flux from the target projection light source unit 31 is applied to the concave mirror 32 through the half mirror 33 and reflected by the concave mirror 32 to become a parallel light flux. The light flux is made incident on the eye examination windows 18a and 18b of the eye examination unit 18 of the eye examination unit 18.

As a result, the eye E to be inspected
The target luminous flux from 1 can be visually recognized, and the subjective optometry can be performed.

At this time, the glasses worn by the subject M are set in the lens meter 6 in parallel with the operation of the subjective eye examination, and the optical characteristics of the lens L are measured.

As a result, the subjective measurement result using the optometry unit 19 and the measurement result of the lens meter 6 under the control of the CPU 40 are displayed on the examiner surface 4b of the housing 4 as shown in FIG. It is also displayed on the screen of the display means 9 arranged, and the examiner displays the subjective eye examination information near the subject M and the optical characteristic information of the lens L by the lens meter 6 on the same screen. It can be visually recognized, and the optometry efficiency for the subject M can be improved.

In addition, during such a subjective eye examination operation, the examinee M operates the switch 13 for the examinee,
By displaying the information of the visual recognition state of the subject M on the display unit 9 together, it is possible to realize a dialogue system between the examiner and the subject M through the display unit 9.

Further, as a display mode of the display means 9, as shown in FIG. 11, both objective and subjective eye test information and the measurement result of the lens meter 6 are combined on the screen of the display means 9. Alternatively, as shown in FIG. 12, it is possible to display only objective and subjective type eye examination information together on the screen of the display unit 9.

The subjective optometry means 15 for performing the above operation,
In particular, by adopting the target projection means 17 using the concave mirror 32, the optometry distance of the subjective optometry can be secured by using the housing 4 which is smaller than the conventional device, and the space of the entire device can be saved.

Further, according to the optometry apparatus 1 of the present embodiment, the subjective optometry means 15, the objective optometry means 16 and the lens meter 6 are operated by the time division control by the common control means 42. Therefore, the common elements of the hardware such as the wiring system and the software such as the control program are increased, the hardware and the software can be simplified and the cost of the device can be reduced, and the optometry processing time for the eye E can be shortened. It can also be realized.

Further, as the display mode of the display means 9, as shown in FIG. 13, both objective and subjective eye test information, the measurement result of the lens meter 6, the display of the chart to be inspected and used. The information of the lens being used and the states of the masks for the left and right eyes may be displayed together on the screen.

Another example of the optometry apparatus 1 will be described with reference to FIG. The optometry apparatus 1A shown in FIG.
3 is made rotatable, and the objective optometry means 16 and the deep optometer unit 51 are alternately arranged on the back side thereof so as to face the eye E to be examined.

The optometry apparatus 1B shown in FIG. 15 includes a motor 5 for the optometry unit 18 via an anterior mirror 52.
4 shows an optometry apparatus 1B in which a rotary-type near-distance target plate 55, which is rotationally driven by 4, is arranged.

In FIG. 16, the light from the light source 61 is supplied to the motor 62.
A rotary type chart plate 62 which is rotationally driven by
An optometry apparatus 1 that is guided to an eye to be inspected E through a mask plate 64 and a magnification lens 65 that are rotationally driven by a motor 63.
It shows C.

In the case of this optometry apparatus 1C, FIGS.
As shown in, the eye E visually recognizes the visual acuity chart image 71 by the chart plate 62 and the glare mask image 72 by the mask plate 64, for example.

The glare mask 81 is shown in FIGS.
As shown in (4), the brightness of the light source unit for the glare mask (shown by hatching in FIGS. 20 and 21) is adjusted by a filter.

Of the optometry tests, the near vision test is a subjective vision examination after complete correction for distance vision, and the near vision test is performed. A near conversion lens is provided at the front of the subjective optometer. The fog lens may be exchangeable in a rotary manner. Also, the optotype can be shared with the distance optotype by the near conversion lens, but a new optotype is newly provided, and a front mirror etc.
The optotype may be visible or may be directly attached to and detached from the near point position of the subjective optometer. All of these operations can be done with the mouse on the screen (including the axial movement, of course).

In addition, according to the three-bar method, a deep visual acuity test can be performed after complete correction by subjective eye examination. After the subjective eye examination is completed, when the deep vision test mode is selected by the operation unit, the front mirror and the objective optometer are stored and replaced with the deep vision tester. The progress of the examination can be answered by the examiner by operating the mouse and the examinee by the examinee's switch, as in the subjective eye examination. It is generally considered that the depth measuring instrument is of the three-bar method, and a measuring distance (2.5 m is standard) is also required, but the adjustment is performed by using a front eye lens or the like. The depth visual acuity measurement is not limited to the triple rod method.

In addition, in the glare test, it is possible to perform a test to confirm whether the visual acuity is deteriorated due to the influence of the target contrast and the back light due to the disease such as cataract after the complete correction by the subjective eye examination. . The glare target is set in combination by a chart plate, a mask plate, a light source, and a magnification lens arranged in the target projection light source unit.

The glare light source is set to be brighter than the normal optotype light source, and the optotype for general visual acuity test is provided with an adjustment filter so that a prescribed amount of light can be obtained. . Further, each glare mask of the glare mask plate is provided with a filter so that the amount of light can be changed to several kinds. For general visual acuity, use a round hole without glare light holes. It is optional whether the filter used for the general visual acuity test is provided on the chart plate side or the mask plate side.

The present invention can be variously modified within the scope of the invention in addition to the above-described embodiments.

[0060]

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 first aspect of the invention, hardware and software can be simplified and the cost of the apparatus can be reduced by making the display means common, and the optometry information and the optical characteristic information of the lens can be visually recognized on the same screen. Therefore, it is possible to provide an optometry apparatus capable of improving the optometry efficiency.

According to the second aspect of the present invention, by disposing the display means on the side wall of the housing in which both the optometry means and the lens meter are incorporated, the optometry of the subject to be examined is performed. This display means can be visually recognized in the vicinity, and it becomes easy to interact with the examinee and allow the examinee to visually recognize the display means, and thus it is possible to provide an optometry apparatus capable of improving the optometry efficiency.

According to the third aspect of the present invention, there is provided an optometry apparatus capable of ensuring the optometry distance of the subjective optometry by using a casing smaller than the conventional apparatus, and saving the space of the entire apparatus. can do.

According to the fourth aspect of the present invention, the subjective optometry means, the objective optometry means, and the lens meter are operated by the time-division control of the common control means. It is possible to provide an optometry apparatus capable of simplifying software and reducing the cost of the apparatus, and also shortening the optometry processing time for an eye to be examined.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of an optometry apparatus of the present invention.

FIG. 2 is a schematic plan view showing an embodiment of the optometry apparatus of the present invention.

FIG. 3 is a schematic front view showing an embodiment of the optometry apparatus of the present invention.

FIG. 4 is a block diagram showing a control system of an embodiment of the optometry apparatus of the present invention.

FIG. 5 is a front view showing the moving state of the optometry unit in the embodiment of the optometry apparatus of the present invention.

FIG. 6 is an explanatory diagram showing objective measurement in the embodiment of the optometry apparatus of the present invention.

FIG. 7 is an explanatory view showing another example of objective measurement in the embodiment of the optometry apparatus of the present invention.

FIG. 8 is an explanatory view showing subjective measurement in the embodiment of the optometry apparatus of the present invention.

FIG. 9 is an explanatory view showing a display example of the display means in the embodiment of the optometry apparatus of the present invention.

FIG. 10 is an explanatory diagram showing a display example of the display means in the embodiment of the optometry apparatus of the present invention.

FIG. 11 is an explanatory view showing a display example of the display means in the embodiment of the optometry apparatus of the present invention.

FIG. 12 is an explanatory diagram showing a display example of the display means in the embodiment of the optometry apparatus of the present invention.

FIG. 13 is an explanatory view showing a display example of the display means in the embodiment of the optometry apparatus of the present invention.

FIG. 14 is a schematic view showing another embodiment of the optometry apparatus of the present invention.

FIG. 15 is a schematic view showing another embodiment of the optometry apparatus of the present invention.

FIG. 16 is a schematic view showing another embodiment of the optometry apparatus of the present invention.

FIG. 17 is a schematic view showing a visually recognized state of an eye to be inspected by the apparatus of the example shown in FIG.

FIG. 18 is a schematic diagram showing a visually recognized state of an eye to be inspected by the apparatus of the example shown in FIG.

FIG. 19 is an explanatory view showing a mask for glare.

FIG. 20 is an explanatory view showing a mask for glare.

FIG. 21 is an explanatory view showing a mask for glare.

[Description of Reference Signs] 1 optometry device 4 housing 6 lens meter 9 display means 15 subjective optometry means 16 objective optometry means 18 optometry unit 32 concave mirror 40 CPU 42 control means E eye to be examined L lens

Claims (4)

[Claims] 1. An optometry apparatus having display means for displaying optometry information for subjective optometry, wherein the display means measures an optical characteristic of a display section of the optometry means for performing optometry of an eye to be examined. An optometry device that doubles as a display unit of a lens meter. 2. The optometry apparatus according to claim 1, wherein the display means is arranged on a side wall of a housing in which both the optometry means and the lens meter are incorporated. 3. The optometry means includes an subjective optometry means including an optical system for converting a projection luminous flux of a target into a parallel luminous flux using a concave mirror, or a combination of the subjective optometry means and the objective optometry means. The optometry apparatus according to claim 1, which is selected from the group consisting of: 4. The subjective optometry means, the objective optometry means, and the lens meter, which constitute the optometry means, operate by time-division control of a common control means.
The eye examination apparatus according to any one of claims 1 to 3.