JP3319525B2 - Ophthalmic equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmic apparatus, and more particularly, to an ophthalmic apparatus having a chin rest for fixing a face of a subject, such as a fundus camera and an auto-refractometer.

[0002]

2. Description of the Related Art In this type of ophthalmologic apparatus, a main body having an optometry function can be vertically moved up and down.
The chin rest for fixing the eye of the subject is moved up and down by manual rotation of the operation knob, and the position of the chin of the subject is adjusted so that the subject's eyes face the objective lens provided on the main body. Is customary.

That is, a subject's chin is first placed on a chin rest, and the subject is moved up and down with the subject's eyes facing the main body to measure the height of the apex of the cornea of the subject's eye. Work to adjust to the height of the lens. In this case, when the corneal vertex of the subject's eye cannot be aligned with the objective lens within the range of the vertical stroke of the main body, the final operation is performed by manually operating the operation knob to move the height of the chin rest up and down. The height of the corneal vertex and the height of the objective lens are made to coincide with each other.

[0004]

However, in the case of the conventional apparatus described above, when the position of the chin rest before the subject puts the chin on the chin rest is extremely low or high,
In many cases, adjusting the height within the range of the vertical stroke of the main body is not enough.In such a case, ask the subject to temporarily remove the chin from the chin rest, and manually operate the operation knob to adjust the height of the chin rest. Extra work of adjusting the position to an appropriate position is required, and the initial setting before the start of optometry becomes complicated,
There has been a problem that the restraint time of the subject is also long, and it is not possible to shorten the optometry time.

Therefore, the present invention can automatically set the position of the chin rest before the subject puts the chin on the chin rest, facilitates the initial setting before starting the optometry, and shortens the optometry time. It is an object of the present invention to provide an optometry apparatus capable of realizing the conversion.

[0006]

According to the first aspect of the present invention,
In an ophthalmologic apparatus having a chin rest for fixing a subject's face to a main body having an optometry function, a preset chin rest is provided.
Height position corresponding to the subject from height position information for the body
A position information transmitting means for selecting and transmitting the position information; and a driving means for displacing the chin rest to a height position corresponding to the height position information based on the height position information from the position information transmitting means. It is.

The height position information transmitted from the position information transmitting means is selected from adult information, child information, subject's age information, and individual face size information. It is intended to be. The invention described in claim 3 is an inspection.
Chin rest for fixing the subject's face to a body having ophthalmic function
An ophthalmologic apparatus provided with
Height position from the recording unit that recorded height position information for
Based on the information, the height of the subject relative to the body
Control means for controlling the position.

[0008]

The operation of the ophthalmologic apparatus having the above-described configuration will be described below.

The position information transmitting means of the ophthalmologic apparatus transmits height position information for the body of the chin rest corresponding to various subjects. The chin rest driving means displaces the chin rest to a height position corresponding to the height position information based on the height position information from the position information sending means.

[0010] Thus, the position of the chin rest before the subject puts the chin on the chin rest can be automatically set to an appropriate position, and the initial setting before the start of the optometry and the optometry can be shortened. It becomes possible.

The height position information is selected from adult information, dwarf information, age information of the subject, and face size information for each individual, so that the adult and dwarf can be distinguished from each other. By age of
The position of the chin rest can be automatically set to an appropriate position for each individual and each person's face size, and the position of the chin rest can be set finely according to various subjects. Also before
By reading the height position information from the recording unit, the subject
Can be automatically set in accordance with the height position.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail.

The ophthalmologic apparatus 1 shown in FIGS. 1 to 3 has a rectangular parallelepiped base 2 and a main body movably attached to the base 2 in the X and Y directions shown in FIG. A base 4, a main body 5 having an optometric function, such as an auto-refractometer, attached to the main body base 4 so as to be vertically movable in a Z direction (vertical direction) by rotating the operation handle 3, and the main body base 4. The operation panel 6 constituting the position information transmitting means 8 which will be described later in detail, and the card reader 7 constituting the position information transmitting means 8 for reading the information of the identification (ID) card C of the subject connected to the main body base 4
Is provided. On the identification card C, age information and face dimension information (for example, dimension information from the corneal vertex of the eye to the lower side of the chin) of the subject are recorded in the form of, for example, magnetic information.

As shown in FIG. 3, an objective lens 9a facing the eye of the subject is provided on one end face side of the main body 5.
Is mounted on the objective lens barrel 9.

Further, the ophthalmologic apparatus 1 has a chin rest 11 on which a subject's chin is placed in front of one end face of the main body 5. That is, a chin support 12 having an L-shaped side surface is attached to one end face of the base 2, and the chin support 11 is supported at the center of the upper rectangular tube 13 of the chin support 12 so as to be vertically movable in the Z direction. At the same time, a band-shaped forehead rest 15 for the subject is laid between a pair of columns 14a and 14b projecting in the Z direction from both ends of the upper rectangular tube 13.

The upper rectangular tube 13 is provided with a chin rest driving means 20 for driving the chin rest 11 in the Z direction and positioning the chin rest at a height position according to the subject.

As shown in FIG. 4, the jaw bearing driving means 20 includes a jaw bearing motor (eg, a pulse motor) 21 having a driving shaft arranged horizontally, and a first jaw receiving motor 21 mounted on the driving shaft of the jaw receiving motor 21. The bevel gear 22 is disposed opposite to the first bevel gear 22 at a predetermined interval, and is connected to a manual handle 25 provided outside the upper square tube 13 via a connection shaft 24. A driven bevel gear 23 comprising a second bevel gear 23, a driven bevel gear 26 screwed to the first and second bevel gears 22, 23, and a screw body 27 projecting upward from the driven bevel gear 26. 28, an engaging projection 11a projecting downward from the lower surface of the chin rest 11 and having a thread provided on an inner peripheral portion thereof screwed to the screw body 27, and a state in which the support 14b faces the chin rest 11. Sensor (for example, infrared sensor) 29 attached with It is provided.

The operation panel 6 has an adult key, a child key, a number setting key, a print key and the like as shown in an enlarged view in FIG. The height position information indicating the dimension L1 from the corneal vertex to the lower side of the chin is sent out. When the child key is pressed, the dimension L2 from the average corneal vertex of the child to the lower side of the chin is calculated. The height position information shown is transmitted, and when the number setting key is depressed, the number information of, for example, three or five persons is transmitted.

The forehead pad 15 is provided with a pair of columns 14.
The forehead abutment 15 can be finely adjusted in the Z direction by operating the fine movement handle 35 attached to one of the connecting rings 14c and 14d with respect to the connecting rings 14a and 14b. I have.

FIG. 6 shows a control system of the optometry apparatus 1 and a program memory 32 storing an operation program.
Control means 3 comprising a control unit 31 for performing overall control
The operation panel 6 and the card reader 7 are connected to the control unit 31.

Further, by the control unit 31, the chin rest motor 21, and performs the operation control of the sensor 29.

Next, the operation of the optometric apparatus 1 will be described mainly with reference to FIG. 7 mainly for setting the height position of the chin rest 11 according to the subject.

For example, when the adult key on the operation panel 6 is depressed, the operation panel 6 sends to the control section 31 height position information indicating a dimension L1 from the corneal vertex of the average adult eye to the lower side of the chin. .

The control unit 31 drives the chin rest motor 21 based on the height position information indicating the dimension L 1 and controls the chin rest 11.
Jaw accepted face of and the center portion of the objective lens 9a is driven such that the dimension L1 as shown in FIG. That is, the rotational force of the chin receiving motor 21 is transmitted to the screw body 27 via the first bevel gear 22 and the driven bevel gear 26, and the screw body 27
By rotating, the chin rest 11 is displaced in the Z direction,
Jaw accepted surface of the chin rest 11 and the center portion of the objective lens 9a is set to be a dimension L1. In this case, the sensor 29 detects the jaw accept surface of the chin rest 11, the sensor 2
The chin support motor 21 is stopped by the control of the control unit 31 based on the detection result of No. 9 and the chin support 11 is moved to the average height position P of the adult.
Positioned at 1.

On the other hand, and presses the dwarf key of the operation panel 6, the operation panel 6 control unit 31 the height position information indicating the dimensions L2 until the lower jaw from the corneal vertex of the average eye dwarf Send to

Thereafter, the chin rest 11 is positioned at the average height position P2 of the child based on the same operation as described above.

In the positioning operation of the chin rest 11 as described above, for example, three adults, one child, and four adults are examined by the number setting key on the operation panel 6 in order of three adults. When an adult and a child are designated, the chin rest 11 is positioned at the average adult height position P1 for three adults based on the same operation as described above, and then for one child, is positioned in the average height position P2, furthermore, in its One in four adults is positioned to the average height position P1 adults.

In addition to the above-described operation, when the identification card C of a certain subject is mounted on the card reader 7,
The card reader 7 reads the age information and face size information of the subject recorded on the identification card C and sends them to the control unit 31 as height position information. Thereafter, the chin rest 11 is positioned at the average height position P1 or P2 of the subject based on the same operation as described above.

By such an operation, the position of the chin rest 11 before the examinee puts the chin on the chin rest 11 can be automatically set to an appropriate position, facilitating initial setting before the start of optometry,
It is possible to reduce the optometry time.

Further, by selecting the height position information from among adult information, child information, age information of the subject, and face size information for each individual, it is possible to determine whether the subject is an adult or a child. By age of
The position of the chin rest 11 can be automatically set to an appropriate position for each individual and each person's face size, and the position of the chin rest can be set finely according to various subjects.

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

For example, a touch sensor is attached to the contact surface of the forehead 15 with the forehead, and it is first detected that the subject's forehead is in contact with the forehead 15, and based on the detection result, It is also possible to operate the chin rest driving means 20 to displace the chin rest 11 which has been lowered in advance until it comes into contact with the subject's chin.

In this manner, the chin rest 11 can be set at the optimum position without forcing the subject to exert an excessive posture.

[0034]

According to the present invention described in detail above, the above-described configuration enables the position of the chin rest before the subject puts the chin on the chin rest to be automatically set to an appropriate position. It is possible to provide an ophthalmologic apparatus capable of facilitating initial setting before starting and shortening the optometry time.

Further, by selecting the height position information from among adult information, child information, age information of the subject, and face size information for each individual, it is possible to determine whether the subject is an adult or a child, By age of
It is possible to provide an ophthalmologic apparatus that can automatically set the position of the chin rest to an appropriate position for each individual and each person's face size, and can perform finely-defined chin rest position setting according to various subjects. . Further, the height position information is read from a recording unit.
Automatically sets the height position according to the subject
be able to.

[Brief description of the drawings]

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

FIG. 2 is a front view of the apparatus according to the embodiment of the present invention.

FIG. 3 is a side view of the apparatus according to the embodiment of the present invention.

FIG. 4 is an enlarged sectional view showing a chin rest driving means in the apparatus according to the embodiment of the present invention.

FIG. 5 is an enlarged view of an operation panel in the apparatus according to the embodiment of the present invention.

FIG. 6 is a block diagram showing a control system of the apparatus according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of the operation of the apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ophthalmic apparatus 5 Main body 8 Position information sending means 11 Jaw rest 20 Jaw rest driving means

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-14879 (JP, A) JP-A-4-288119 (JP, A) JP-A-5-154108 (JP, A) JP-A-4-148 336053 (JP, A) JP-A-3-70547 (JP, A) JP-A-59-177022 (JP, A) JP-A-4-92202 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 3/00-3/16

Claims (3)

(57) [Claims] 1. A ophthalmologic apparatus provided with a chin rest for fixing the face of the subject relative to the body having the eye functions, previously set
The subject is determined from the specified height position information of the chin rest with respect to the main body.
Position information transmitting means for selecting and transmitting height position information according to the position information, and driving for displacing the chin rest to a height position corresponding to the height position information based on the height position information from the position information transmitting means. An ophthalmologic apparatus comprising: 2. The height position information sent from the position information sending means is selected from adult information, child information, subject age information, and individual face size information. 2. The ophthalmic apparatus according to 1. 3. An ophthalmologic apparatus provided with a chin rest for fixing a face of an examinee to a main body having an optometric function, wherein a height of position information on the main body corresponding to the examinee is recorded from a recording unit. An ophthalmologic apparatus comprising: control means for controlling a height position of the subject with respect to the main body based on height position information.