JP2539263Y2 - Subjective inspection device - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a subjective inspection apparatus that can be used even in a narrow place where a linear distance required for an eyesight test cannot be secured.

(Prior Art) Conventionally, as a subjective examination apparatus used in a spectacle shop or an ophthalmic clinic having a small floor area, a subjective eye refractive power examination apparatus is supported on a table corresponding to the subject's eye, and a visual acuity table display means is provided. And a first guide for guiding a light beam from the visual acuity table display means.
A reflection device is provided in the table, and a second reflection device for guiding the light flux guided by the first reflection device toward the subject's eye is provided on the table, from the subject's eye to the eye chart display means. Is a multi-reflection type in which the optical path length is secured.

In this configuration, the luminous flux from the visual acuity table display means guided by the first reflecting device is reflected toward the subject by the second reflecting device, and then is passed through the subjective eye refraction testing device. It will be incident on the eye.

By the way, in the case of performing a contrasting method using a collimator stored in a table or the like using the above-described collimator, the parallel light from the collimator is passed through the collimator. It must be incident on the eye of the subject. At this time, it is necessary to retract the second reflecting device in front of the eye-refractive-power inspection device.

However, in the above-described conventional apparatus, the second reflecting device must be manually retracted irrespective of the operation of taking out the image from the table of the image analyzer, and the operability when performing the image analysis is poor. there were.

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and can improve operability when using a visual function inspection means different from an eye refractive power inspection apparatus. It is an object of the present invention to provide a subjective inspection device.

[Means for Solving the Problems] In the present invention, a visual acuity table displaying means, the first reflecting device for reflecting a light beam from the visual acuity table displaying means, and a light beam from the first reflecting device are provided. A second reflection device for reflecting light toward a subject and a visual function inspection means using a visual power inspection device provided on the table in a visual inspection device provided with a visual eye refractive power inspection device on the table; Storage unit, and a detection unit that detects whether or not the visual function inspection unit is stored in the storage unit,
Driving means for driving the second reflection device to either within the visual field of the subject or outside the visual field based on the detection result of the detection means.

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

In this device, when performing an inspection using the eye refractive power inspection device of the observer, when the visual function inspecting means is taken out of the accommodating portion, at this time, the detecting means outputs a detection signal indicating that there is no visual function inspecting means to the driving means. Send to Accordingly, the driving unit drives the second reflecting device out of the visual region of the subject via the eye-refractive-power inspection device. As a result, an inspection using the visual function inspection means and the eye refractive power inspection apparatus becomes possible.

On the other hand, when the visual function inspection means is accommodated in the housing portion, the detection means sends a detection signal indicating the presence of the visual function inspection means to the driving means. Accordingly, the driving unit drives the second reflecting device into the visual region of the viewer via the eye-refractive-power inspection apparatus. As a result, inspection using the visual acuity table display means becomes possible.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

In the subjective test apparatus 1 shown in FIG. 1, reference numeral 3 denotes a table used for a visual acuity test, and a table body 3a and a box-shaped first leg 4 supporting one side of the table body 3a.
And a hollow optical component storage box 5 that supports the other side of the table body 3a.

At the examiner-side end 4a of the first leg 4, a housing 35 for the analyzer 2, which is an example of a visual function inspection unit, and whether or not the analyzer 2 is housed in the housing 35 is detected. A micro switch 32 is provided as detection means.

That is, the housing portion 35 is box-shaped and has a housing hole 35a through which the analyzer 2 can be inserted and removed.
32 operating pieces 32a are exposed. Then, when the analyzer 2 is accommodated in the accommodation hole 35a as shown in FIG. 3 (a), the operating piece 32a comes into contact with the outer surface of the analyzer 2, and the micro switch 32 is turned off. Fig. 3 (b)
Upon removal from the accommodation hole 35a in the arrow alpha ₁ direction as shown in the operating piece 32a is micro switch 32 becomes open state is configured to be turned on.

The box 5 includes a second leg 5a below the table main body 3a and an upper box 5b above the table main body 3a. A notch space 6 is formed between the second leg 5a and the upper box 5b to be open to the examiner.
The upper surface 5c of the leg 5a facing the cutout space 6 is formed so as to be flush with the table body 3a. At the upper end of the upper box portion 5b, a hollow mirror mounting protrusion 7 protruding toward the table body 3a is formed.

The projection screen 9 of the visual acuity chart display means 8 shown in FIG. 1 is provided on the upper surface c of the second leg 5a, and the projection optical system of the visual acuity chart display means 8 is provided in the second leg 5a. ing.

This projection optical system includes a light source 10, a condenser lens 11, a visual acuity table 12, a variable power lens 13, and reflection mirrors 14, 15, and 16.
When the illumination light from the light source 10 is applied to the visual acuity table 12 via the condenser lens 11, the optotype 12a of the visual acuity table 12 is obtained.
Is projected and formed as an optotype 12a 'on the projection screen 9 via the variable power lens 13 and the reflection mirrors 14, 15, and 16. As the eyesight table plate 12, a structure in which a number of different eyesight tables are attached to a transparent rotating disk in the circumferential direction may be employed, or a structure such as a slide projection device may be used. May be.

The reflection mirror 1 of the first reflection device 17 is provided in the upper box portion 5b.
8, 19, and 20 are accommodated, and the reflection mirrors 21 and 22 of the first reflection device 17 are accommodated in the mirror mounting projection 7. The reflection mirrors 18 and 19 are arranged in an eight-shape above the upper box portion 5b, and one reflection mirror 18 is arranged above the projection screen 9. Also, the reflection mirror 20
The reflection mirror 19 is positioned at substantially the same height as the projection screen 9.
It is located directly below. In such a first reflecting device 17, the light flux from the projection screen 9 is reflected by a reflecting mirror.
After being reflected in the order of 18, 19, 20, and 21, the light is reflected downward by the reflection mirror 22.

A reflection mirror 23 as a second reflection device is provided directly below the reflection mirror 22 to reflect and guide the light beam from the reflection mirror 22 to the subject's eye. The reflection mirror 23 is attached to a free end of a mirror arm 24 as a support member, and the base of the mirror arm 24 is inserted into a vertically extending slit 28 provided on the lower side of the upper box 5b.
In addition, the mirror arm 24 is provided so as to be able to move up and down in the Z ₁ and Z ₂ directions by a pulse motor 26 and a feed screw 27 disposed in the upper box section 5b.

Forming the mirror arm 24, the slit 28, the pulse motor 26, driving means 33 for retracting the Z ₁ direction from the eye refractive power measuring device 31 is positioned in front of or that position of the subjective-type to be described later reflection mirror 24 by the feed screw 27 doing.

An arm 29 as a support member is mounted on the side of the upper box portion 5b so as to be rotatable in the direction of arrow 30 and to be movable with respect to the subject M. An eye refractive power inspection device 31 of a type is mounted so as to be movable.

According to such a configuration, the eye refraction inspection apparatus 31 is
The reflection mirror 23 as the second reflection device does not move even if the movement is adjusted with respect to the subject's eye.

 In FIG. 1, M is a viewer.

As shown in FIG. 4, the analyzer 2 has a handle 2a that can be gripped by an examiner, an analyzer 2b having a circular hole 2c attached to the handle 2a, and a detector 2b arranged around the circular hole 2c. And a light source lamp 2d for emitting parallel light.

Here, the circuit system of the microswitch 32 and the driving means 33 will be described with reference to FIG.

This circuit system includes the microswitch 32 and driving means 33 connected to the microswitch 32.

The driving means 33 includes a relay RY and a battery B connected in series to the microswitch 32, the pulse motor 26, a motor controller 34 for driving the pulse motor 26, and a contact C of the relay RY connected to the motor controller 34.
_RY .

Next, the operation of the apparatus 1 having the above-described configuration will be described mainly with respect to a case where an image analysis method using the image analyzer 2 is performed.

Note that, as an initial state, the reflection mirror 24 is present in front of the eye-refractive-power inspection apparatus 31 shown in FIG. 1, the analyzer 2 is housed in the housing hole 35a, and the microswitch 32 is off. And

In this state, the examiner retinoscopy unit 2 FIG. 2, when the third view taken from the receiving hole 35a, as shown in (b) in the alpha ₁ direction microswitch 32 is turned on, thereby the relay RY is energized It has been signal indicating that there is no retinoscopy unit 2 closes the contact C _RY is sent to the motor controller 34. As a result, the motor controller 34 drives the pulse motor 26, feed screw 27 is displaced a reflecting mirror 23 with the mirror arm 24 rotates in the arrow Z ₁ direction.

In this manner, the reflecting mirror 23 can be automatically retracted out of the field of view of the subject M via the eye-refractive-power inspection device 31 in conjunction with the taking-out operation of the analyzer 2. In addition, it is possible to immediately execute a radiographic method using the eye refractive power inspection apparatus 31, and operability is improved.

On the other hand, when accommodated in the accommodation hole 35a of Kenkageki 2 from alpha ₂ direction, the micro switch 32 is turned off, the relay RY
Contact C _RY excitation is interrupted the signal indicating the presence of retinoscopy unit 2 to the motor controller 34 in turn to open is sent. The motor controller 34 drives the pulse motor 26 in the direction opposite to the above case based on this signal. As a result, the feed screw 27
Also reversed, returning to the initial position the reflecting mirror 24 together with the mirror arm 24 is displaced in the Z ₂ direction.

In this state, the light flux from the projection screen 9 is reflected by the reflection mirrors 18 to 21 and then enters the eye refractive power inspection device 31 via the reflection mirror 24, so that the optotype 12a 'is subjected to the inspection. Will be.

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

For example, the above-described storage section 35 can be similarly implemented using a charging box for the radioscope 2.

Although not shown, a drawer for accommodating, for example, a hand-held index as a visual function inspection means is provided on the table main body in addition to the image analyzer 2, and the driving means 33 is attached to a microswitch that operates when the drawer is pulled out. The same operation and effect as those of the above-described embodiment can be exerted even if these are linked.

[Effects of the Invention] According to the present invention described in detail above, the accommodating operation or taking-out operation of the visual function inspection means using the eye-refractive-power inspection device to the accommodating portion and the moving operation of the second reflecting device are linked. Thus, it is possible to provide a subjective inspection apparatus capable of improving operability.

[Brief description of the drawings]

FIG. 1 is a perspective view of an apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory view of the operation of the apparatus, FIG. 3 (a) is a cross-sectional view of an accommodated state of a radioscope in the apparatus, and FIG. ) Is a cross-sectional view of the above-mentioned taken-out state, FIG. 4 is a perspective view of the radioscope, and FIG. 5 is a circuit diagram of the microswitch and the driving means. DESCRIPTION OF SYMBOLS 1 ... subjective inspection apparatus, 2 ... analyzer, 3 ... table, 17 ... 1st reflection apparatus, 24 ... reflection mirror, 31 ... eye refractive power inspection apparatus, 33 ... drive means, 35 …… Accommodation part, M…
... Examinee.

Claims (1)

(57) [Scope of request for utility model registration] 1. A visual acuity table display means, a first reflection device for reflecting a light beam from the visual acuity table display means, and a second reflection device for reflecting the light beam from the first reflection device toward a subject In a subjective inspection apparatus in which a subjective eye refractive power inspection apparatus is provided on a table, a housing section for visual function inspection means using an eye refractive power inspection apparatus provided on the table, and a visual function inspection means for the accommodation section Detecting means for detecting the presence or absence of accommodation of
A driving means for driving the second reflection device to either inside or outside the view area of the subject based on the detection result of the detection means.