JP2003235804A - Ophthalmic equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention enables quick vertical alignment of an apparatus main body by only slightly rotating a rotating operation means, and also stores the apparatus in a carrying case during storage and transportation. An ophthalmologic apparatus capable of speeding up the operation is provided. SOLUTION: An apparatus main body provided with an optical unit for measurement or observation which moves up and down with respect to an eye to be examined, and a joystick 1 for moving the apparatus main body up and down by rotating operation.
An opthalmologic apparatus comprising: a moving direction and a moving amount or a moving speed corresponding to a rotating direction and a rotating amount or a rotating speed of the joystick 102.
A rotation state detection unit 200 for detecting rotation start in any direction of the joystick 102 and detecting rotation start in a direction opposite to the rotation start direction, and in any direction by the rotation state detection unit 200; And a Y-direction driver 204 for driving the apparatus main body in any one of upper and lower directions based on the rotation start detection signal and stopping driving of the apparatus main body based on the rotation start detection signal in the opposite direction. is there.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an ophthalmologic apparatus,
Specifically, the present invention relates to an ophthalmologic apparatus having an improved alignment function of an optical unit with respect to an eye to be examined.

[0002]

2. Description of the Related Art Conventionally, as an example of an ophthalmic apparatus, a fluid such as an air pulse is sprayed toward a cornea of an eye to be examined from a spray nozzle mounted on an optical unit to deform the cornea (applanation).
There is known a non-contact tonometer that measures the intraocular pressure value by receiving a reflected light flux from the cornea in the applanation state with a light receiving element.

In such a non-contact tonometer, since it is necessary to align the position of the spray nozzle with the cornea of the eye to be examined, a vertical alignment function for optimizing the position of the optical unit of the apparatus main body with respect to the eye to be examined. Is essential.

As a conventional alignment means,
The joystick rotation knob and the detection means for optically detecting the operating state (rotation direction, rotation amount) of the rotation knob are provided coaxially, and the detection signal of the detection means according to the rotation direction and rotation speed of the rotation knob is provided. There is known one in which an optical unit is vertically driven to perform alignment based on the above (Japanese Patent Laid-Open No. 6-7292).

[0005]

However, in the conventional alignment means, for example, the main body of the device is normally driven only up or down at a moving speed or a moving amount according to the rotating amount of the rotary knob of the joystick. In the case of aligning the apparatus main body, there is a problem that it takes too much time to optimize the position of the optical unit of the apparatus main body with respect to the eye to be inspected. Further, for example, when storing and transporting the entire non-contact tonometer, it is necessary to lower the device body to the lowest position and store it in a carrying case in a state where the height is minimized. Even in this case, there is a problem that it is difficult to lower the speed quickly.

The present invention has been made in view of the above circumstances, and the vertical alignment of the main body of the apparatus can be quickly performed by only slightly rotating the rotating operation means, and the carrying can be carried during storage and transportation. It is an object of the present invention to provide an ophthalmologic apparatus that can speed up the process of storing the case.

[0007]

The invention according to claim 1 is
The apparatus main body is provided with an optical unit for measurement or observation that moves up and down with respect to the eye to be inspected, and rotation operation means for vertically moving the apparatus main body by a rotation operation, and the rotation direction and rotation of the rotation operation means. An ophthalmologic apparatus that moves the apparatus body up and down at a movement direction and a movement amount or a movement speed according to the amount or the rotation speed, and the rotation start detection and the rotation start direction in any direction of the rotation operation means. Rotation state detecting means for detecting rotation start in the opposite direction, and drive the device main body in either up or down direction based on the detection signal of rotation start in either direction by the rotation state detecting means And a vertical movement drive control means for stopping the drive of the apparatus main body based on the detection signal of the rotation start in the direction.

According to the present invention, the apparatus main body is driven in one of the upper and lower directions based on the detection signal of the rotation start in either direction by the rotation state detection means, and the detection signal of the rotation start in the opposite direction is generated. Since the drive of the main body of the apparatus is stopped based on the above, the rotary operation means is turned slightly clockwise (clockwise) to automatically drive the main body of the apparatus upward, and a predetermined position (for example, a fine movement range is determined. The main body can be driven by a simple operation in which the rotation operation means is turned slightly counterclockwise (counterclockwise) to stop when the main body rises to the position where Can be realized. Further, the operation of automatically lowering and driving the apparatus body to the lowermost portion can be performed in the same manner, and the storage processing in the carrying case at the time of storage and transportation can be speeded up.

According to a second aspect of the present invention, there is provided an apparatus main body having an optical unit for measurement or observation that moves up and down with respect to an eye to be inspected, and a rotation operation means for vertically moving the apparatus main body by a rotation operation. An ophthalmologic apparatus for moving up and down the apparatus body in a moving direction and a moving amount or moving speed according to the rotating direction and rotating amount or rotating speed of the rotating operation means,
One of the rotation state detecting means for detecting rotation start in any direction of the rotation operating means, the detecting means for detecting arrival of the apparatus main body to a predetermined alignment range with respect to the eye to be inspected, and the rotation state detecting means. In accordance with the rotation direction and the rotation amount or rotation speed of the rotation operation means based on the detection signal of the detection means, the main body of the apparatus is driven in the up or down direction based on the detection signal of the rotation start. Up-and-down drive control means for switching the up-and-down drive of the apparatus main body according to the moving direction and the moving amount or the moving speed is provided.

According to the present invention, similarly to the first aspect of the invention, the main body of the apparatus is driven in either the upper or lower direction based on the detection signal of the rotation start in any direction by the rotation state detecting means, Based on a detection signal which means that the detection means has reached a predetermined alignment range, a vertical direction drive of the apparatus main body is performed by the movement direction and the movement amount or the movement speed corresponding to the rotation direction and the rotation amount or the rotation speed of the rotation operation means. Since it is switched, quick movement to the fine movement range of the device body is possible, speeding up / down alignment outside the fine movement range (coarse movement range) of the device body, and alignment by manual operation in the fine movement range. It is possible to meet the demand for high precision.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below.

The ophthalmologic apparatus S according to the present embodiment shown in FIGS. 1 and 2 functions as a non-contact tonometer.
Anterior segment observation optical system 1 for observing the anterior segment of the eye E
0 and XY directions (left and right and up and down directions with respect to the eye E)
XY alignment target projection optical system 20 that projects the target light for alignment detection and corneal deformation detection from the front toward the cornea C of the eye E, and a fixation target that presents the fixation target to the eye E. A projection optical system 30; an XY alignment detection optical system (position detecting means) 40 for receiving the reflected light of the XY alignment target light by the cornea C to detect the positional relationship between the ophthalmologic apparatus S and the cornea C in the XY directions; A corneal deformation detection optical system (corneal deformation detection means) 50 that receives the reflected light of the alignment target light by the cornea C and detects the amount of deformation of the cornea C, and the Z direction from the oblique direction to the cornea C (front-back direction with respect to the eye E to be inspected). Of the Z-alignment target projection optical system 60 for projecting the alignment target light, and the light reflected by the cornea C of the Z-alignment target light is received from a direction symmetrical with respect to the optical axis of the anterior segment observation optical system 10. Ophthalmology And a Z alignment detection optical system 70 for detecting the Z-direction positional relationship of the location S and the cornea C.

As shown in FIG. 1, the anterior ocular segment observing optical system 10 includes a plurality of anterior ocular segment illumination light sources 11, which are located on the left and right sides of the eye E to directly illuminate the anterior ocular segment, and an air flow blowing nozzle 1.
2, anterior ocular segment window glass 13, chamber window glass 14, half mirror 15, objective lens 16, half mirror 17,
18, a CCD camera 19 as an image pickup means.
In FIG. 1, O1 is the optical axis of the anterior segment observation optical system 10.

The anterior ocular segment image of the subject's eye E illuminated by the anterior ocular segment illumination light source 11 passes through the inside and outside of the air flow blowing nozzle 12, and the anterior ocular segment window glass 13, the chamber window glass 14,
The light is transmitted through the half mirror 15, is focused by the objective lens 16, is transmitted through the half mirrors 17 and 18, and is imaged on the CCD camera 19 to be imaged.

As shown in FIG. 2, the fixation target projection optical system 30 includes a fixation target light source 31 that emits visible light, a pinhole plate 32, a dichroic mirror 26, a projection lens 27, a half mirror 15, and a chamber window. The glass 14 and the air flow blowing nozzle 12 are included.

The fixation target light emitted from the light source 31 for the fixation target passes through the pinhole plate 32 and the dichroic mirror 26, and is converted into parallel light by the projection lens 27.
After passing through the chamber window glass 14 after being reflected by 5, the eye E to be inspected passes through the inside of the air flow blowing nozzle 12.
Be led to. The subject's eyes are fixed by gazing at the fixation target as a fixation target.

The XY alignment target projection optical system 20 includes
As shown in FIG. 2, an XY alignment light source 21 for emitting infrared light, a condenser lens 22, an effective diaphragm 23, an aperture diaphragm 24, a pinhole plate 25, a dichroic mirror 26,
It is configured to include a projection lens 27, a half mirror 15, a chamber window glass 14, and an air flow blowing nozzle 12, which are arranged on the optical path so as to match the focus with the pinhole plate 25.

The infrared light emitted from the XY alignment light source 21 passes through the effective diaphragm 23 and the aperture diaphragm 24 while being focused by the condenser lens 22, and is guided to the pinhole plate 25. Then, the light flux that has passed through the pinhole plate 25 is
Reflected by the dichroic mirror 26, the projection lens 27
After being reflected by the half mirror 15 as a parallel light flux, the light passes through the chamber window glass 14, passes through the inside of the air flow blowing nozzle 12, and as shown in FIG.
An alignment target light K is formed.

In FIG. 3, the XY alignment target light K
Is reflected by the corneal surface T so as to form a bright spot image R at an intermediate position between the apex P of the cornea C and the center of curvature of the cornea C. The aperture stop 24 is provided at a position conjugate with the cornea apex P with respect to the projection lens 27.

The effective diaphragm 23 is provided at a position conjugate with the end surface F of the projection nozzle 27 on the objective lens 16 side of the air flow blowing nozzle 12. This effective aperture 23
The effect of will be described with reference to FIG.

4A and 4B are schematic views of the XY alignment target projection optical system 20, and the dichroic mirror 26 is omitted. FIG. 4A shows the case where the effective diaphragm 23 is not provided, and FIG. 4B shows the case where the effective diaphragm 23 is provided. If the effective diaphragm 23 is not provided as shown in FIG. 4A, the light flux passing through the central portion of the pinhole plate 25 passes through the entire nozzle without being kicked, but a part of the light flux passing through the peripheral portion ( The off-axis light beam K1) is kicked by the end face F of the nozzle 12. The light flux K1 that strikes the end face F of the nozzle 12 is scattered / reflected, and this reflected light K1 ′ is described later in XY.
The light enters the sensor 41 of the alignment detection optical system 40, causing misdetection of alignment.

In order to avoid such a situation, FIG.
As shown in (b), by providing the effective diaphragm 23 and cutting unnecessary light in advance, it is possible to increase the diameter of the projected light flux without generating ghost light and increase the alignment detectable range.

The XY alignment detecting optical system 40 includes an air flow blowing nozzle 12, a chamber window glass 14, a half mirror 15, an objective lens 16, half mirrors 17 and 1.
8, a sensor (light receiving element) 41, and an XY alignment detection circuit 42.

The reflected light beam projected on the cornea C by the XY alignment target projection optical system 20 and reflected on the corneal surface T passes through the inside of the nozzle 12 and the chamber window glass 14,
While passing through the half mirror 15 and being focused by the objective lens 16, part of the light is transmitted by the half mirror 17 and part of it is reflected by the half mirror 18. Half mirror 18
The luminous flux reflected by forms a bright spot image R′1 on the sensor 41 arranged to face the half mirror 18. This sensor 4
Reference numeral 1 is a light receiving sensor such as a PSD capable of detecting a position.

The XY alignment detection circuit 42 is based on the output of the sensor 41, and is a device main body 115 of the ophthalmologic apparatus S.
And the positional relationship between the cornea C and the cornea C (XY directions) are calculated by a known means, and the calculation result is output to the control circuit 80.

On the other hand, the cornea C transmitted through the half mirror 18
The reflected light flux by is reflected by the bright spot image R′2 on the CCD camera 19.
To form. The CCD camera 19 outputs an image signal to the monitor device, and as shown in FIG. 5, the anterior ocular segment image E of the eye E to be inspected.
A bright spot image R′2 of the XY alignment visual target light K is displayed on the screen G of the monitor device 81. In addition, in FIG.
H is a circular alignment auxiliary mark generated on the screen G by an image generating means (not shown).

Further, a part of the light flux reflected by the half mirror 17 is guided to the corneal deformation detection optical system 50, passes through the pinhole plate 51 and is guided to the sensor 52. The sensor 52 is a light receiving sensor capable of detecting the amount of light such as a photodiode.

As shown in FIG. 1, the Z alignment target projection optical system 60 includes a Z alignment light source 61 for emitting infrared light, a condenser lens 62, an aperture stop 63, a pinhole plate 64, and a pinhole plate 64. And O2 is the optical axis of the Z alignment target projection optical system.

The infrared light emitted from the Z alignment light source 61 is condensed by the condenser lens 62, passes through the aperture stop 63, and is guided to the pinhole plate 64. Pinhole plate 6
The light flux passing through 4 is collimated by the projection lens 65, guided to the cornea C, and reflected on the corneal surface T so as to form a bright spot image Q as shown in FIG. It should be noted that the aperture stop 63 has a corneal vertex P with respect to the projection lens 65.
It is provided at a position conjugate with.

As shown in FIG. 1, the Z alignment detection optical system 70 includes an imaging lens 71, a cylindrical lens 72 having a power in the Y direction, a sensor 73, and a Z alignment detection circuit 74, and O3 is the Z alignment. It is the optical axis of the detection optical system 70.

The reflected light flux on the corneal surface T of the target light projected by the Z alignment target projection optical system 60 is
A bright spot image Q ′ is formed on the sensor 73 through the cylindrical lens 72 while being focused by the imaging lens 71. The sensor 73 is a light receiving sensor such as a line sensor or a PSD that can detect a position. Information from the sensor 73 is Z
Guided to the alignment detection circuit 74, the positional relationship (Z direction) between the ophthalmologic apparatus S and the cornea C is calculated by known means,
It is output to the control circuit 80.

In the XZ plane, the bright spot image Q and the sensor 73 are in a conjugate positional relationship with the imaging lens 71, and in the YZ plane, the corneal vertex P and the sensor 73 are the imaging lens 71 and the cylindrical lens. The lens 72 has a conjugate positional relationship. That is, the sensor 73 is the aperture stop 63.
(The magnification at this time is selected so that the image of the aperture stop 63 is smaller than the size of the sensor 73), and even if the cornea C is displaced in the Y direction, the reflected light flux on the corneal surface T is still efficient. It comes into the sensor 73 well. Further, by projecting a long slit light in the Y direction, the same effect can be obtained although the efficiency is lowered.

Next, the external structure of the ophthalmologic apparatus S of the first embodiment will be described with reference to FIGS. 7 and 8.

FIG. 7 is a side view showing the overall configuration of the ophthalmologic apparatus of the first embodiment, and FIG. 8 is a plan view showing the overall configuration of the ophthalmologic apparatus of the first embodiment.

In FIG. 7, reference numeral 100 is a base having a built-in power supply section. A pedestal 101 is provided above the base 100 so as to be movable in the front-rear direction (Z direction) and the left-right direction (X direction) by tilting a joystick 102 that is a rotating operation means.

A switch button 103 is provided on the upper end of the joystick 102, and the manual switch 103 is used for various operations by the non-contact tonometer. The detailed configuration of the joystick 102 will be described later.

On the upper part of the mount 101, the vertical direction (Y
Direction) motor 104 using a pulse motor or the like for driving,
A pillar 105 is provided. Motor 104 and support 10
5 is coupled by a pinion rack mechanism (not shown), and the column 105 is driven in the vertical direction by the rotational force of the motor 104.

A table 106 is provided on the upper end of the column 105, and a column 107 is installed upright on the table 106, and a motor 1 using a pulse motor or the like is provided.
08 are arranged. A table 109 is provided on the upper end of the column 107 so as to be slidable in the X direction. A rack 110 is provided on the rear end side of the table 109, as shown in FIG.

The output shaft of the motor 108 has a pinion 1
11 is provided, and the pinion 111 is engaged with the rack 110. In addition, a motor 112 using a pulse motor or the like is arranged above the table 109.
13 are erected. A pinion 114 is fitted on the output shaft of the motor 112.

On the upper part of the column 113, an apparatus main body 115 on which the above-mentioned optical systems as shown in FIGS. 1 and 2 and further a control system are mounted is provided slidably in the Z direction. A rack 116 is provided on the side of the apparatus main body 115 along the Z direction. And this rack 1
Reference numeral 16 is meshed with the pinion 114, and the motor 112 drives the apparatus main body 115 in the Z direction.

As shown in the enlarged view of FIG. 9, the joystick 102 is incorporated in the pedestal 101 on the base 100 so as to be operable in the front-back, left-right, and rotational directions.

The joystick 102 has a cord shaft 137 for internally supporting a switch holder 135 having a switch 134 provided with a switch button 103 on the top thereof.
The cylindrical outer cylinder 123 and the cylindrical inner cylinder 124 are coaxially arranged, and they are rotatably supported by a pair of bearings 136 and 125 arranged vertically. A cover body 122 is attached to the outer periphery of the upper portion of the outer cylinder 123.

A ball body 139 having a substantially spherical upper portion is attached to the lower end portion of the code shaft 137, and a convex spherical surface 139a provided at the lower end of the ball body 139 is used as the base 10.
The upper sliding plate 100a is in contact with the sliding plate 100a. Ball body 1
The outer periphery of the side portion of 39 is covered with a cylindrical inner holder 130. The ball holders 138, 14 that are in sliding contact with the outer circumference of the ball body 139 are provided on the inner wall of the inner holder 130.
1 is arranged. An annular spacer 142a and a pressing ring 142b are arranged below the inner wall of the inner holder 130.

On the other hand, an upper ball body 126 having a substantially hemispherical appearance is arranged, which opens downward from the outside of the lower bearing 125 supporting the code shaft 137 to the outer periphery of the inner holder 130, and further the upper ball body 126. A bottomed cylindrical restraining cylinder 143, whose upper end is closed outside of, does not come into contact with the outer periphery of the upper ball body 126, and a Y-axis with respect to the gantry 101 is provided by using a support disk 153.
It is rotatably arranged around an axis.

A pin 128 engages between the restriction groove 126a provided in the Y direction on the outer periphery of the upper ball body 126 and the retaining cylinder 143, and the mount 101 and the outer periphery of the retaining cylinder 143 are engaged with each other. By coupling the spaces with a bearing 127, when the cover body 122 is gripped with a finger and rotated about the Y axis, the cover body 122 is restrained together with the upper side ball body 126 and the cylindrical body 143.
Is rotated around the Y-axis.

Further, the belt 1 is provided on the outer periphery of the restraining cylinder 143.
A pulley 154 around which 44 is wound is attached. By providing the restriction groove 126a described above, when the joystick 102 is tilted together with the upper ball body 126, for example, in the Z direction, the convex spherical surface 139a and the sliding plate are in sliding contact with each other without giving a rotational force to the holding cylinder body 143. The pedestal 101 can be moved in the Z direction. The same applies to the configuration in which the joystick 102 is tilted in the X direction together with the upper ball body 126 to move the gantry 101 in the X direction.

On the side of the joystick 102,
The rotary encoder 161 is arranged with the encoder shaft facing downward, using an encoder holder 162 composed of a fixed support member 163 and a fixed horizontal plate 164, and a set of shaft bearings having a stepped circular outer periphery using a set screw 165 on the encoder shaft. The body 166 is attached. Further, on the outer periphery of the shaft receiver 166, an annular bearing 16 is formed.
An encoder pulley 168 rotatably supported around the Y-axis by 7 is mounted.

A belt 144 is wound around the outer circumferences of the encoder pulley 168 and the pulley 154,
The rotation of the joystick 102 is controlled by the pulley 15
4, the belt 144, the encoder pulley 168, and the shaft receiver 166 to transmit the signal to the encoder shaft, and from this, the rotary encoder 1 outputs a signal corresponding to the rotation direction, rotation amount, or rotation speed of the joystick 102.
It is configured to output from 61. 169 in FIG.
Is a support member that supports the bearing 167, and 170 is a rotation transmission pin.

In the joystick 102, a rotation state detecting section 220 for detecting the rotation direction (clockwise start, counterclockwise start) in which the examiner grips the cover body 122 and starts rotation is exposed near the outer periphery of the pulley 154. It is arranged on the inner wall of the gantry 101. The rotation state detection unit 220 attaches a reflection film to a part of the outer circumference of the pulley 154, and arranges, for example, two optical sensors at a constant interval in the outer circumference direction of the pulley 154, and the two optical sensors are rotated by the rotation of the joystick 102. The rotation output direction is detected by utilizing the fact that the signal output order of the optical sensor is turned clockwise and turned counterclockwise.

Next, the control system of the ophthalmologic apparatus S of this embodiment will be described with reference to FIG. In this control system, the XY alignment detection circuit 42, the Z alignment detection circuit 74, and the monitor device 81 are connected to a control circuit 80 that performs overall control. In addition, the rotary encoder 1
The control circuit 80 receives the output signal from 61, the mode signal from the mode setting unit (mode setting switch) 200 for setting the manual alignment mode and the automatic alignment mode provided on the base 100, and the detection signal from the rotation direction detecting unit 220 to the control circuit 80. It is designed to be entered.

Furthermore, a Y-direction driver 204 that drives the motor 104 in a variable (normally speed-up / deceleration) drive, an X-direction driver 208 that drives the motor 108, the motor 1
A Z-direction driver 212 that drives 12 is connected to each of the motors 104, 108 and 112 under the control of the control circuit 80.

The apparatus main body 115 is driven in the Y direction by the motor 104, is driven in the X direction by the motor 108, and is driven in the Z direction by the motor 112. By these operations, alignment of the apparatus main body 115 in the XYZ directions is performed. Adjustments are made.

The Y-direction driver 204 receives the joystick 10 based on the detection signal from the rotation state detecting section 220.
A rotation direction determination unit 221 that determines the rotation start direction of 2;
When the determination result of the rotation direction determination unit 221 is clockwise, the drive pulse is sent to the motor 104 to rotate the motor 104, and when the determination result of the rotation direction determination unit 221 is counterclockwise, the drive pulse is stopped to be output. The driver unit 224 for stopping the motor 104 is provided.

Next, the alignment adjustment operation of the apparatus main body 115 of the present embodiment with respect to the eye E to be inspected, especially in the Y direction, will be described. The relationship between the rotation direction of the joystick 102 and the vertical movement direction of the device body 115 is that the device body 1 is rotated by turning the joystick 102 clockwise in a normal state.
It is assumed that the initial setting is such that 15 rises and the device main body 115 descends when turned counterclockwise.

When the examiner turns the joystick 102 slightly clockwise with his right hand as shown in FIG. 12, the rotation state detecting section 220 detects the clockwise start of the joystick 102 and detects the rotation state as shown in FIG. Part 2
20 turns to the right and sends a detection signal to the control circuit 80, which means start. Based on the control of the control circuit 80, the rotation direction determination unit 221 determines that the rotation start of the joystick 102 is clockwise and the driver unit 224 sends a drive pulse to the motor 104 as shown in FIG.
Is rotated to drive the apparatus main body 115 upward.

Next, when the examiner slightly turns the joystick 102 counterclockwise with the right hand, the rotation state detection unit 220 detects the counterclockwise start of the joystick 102,
As shown in FIG. 11, the rotation state detection unit 220 sends a detection signal to the control circuit 80, which means counterclockwise rotation and start. Based on the control of the control circuit 80, the rotation direction determination unit 221 determines that the rotation start of the joystick 102 is counterclockwise, and the driver unit 2
The operation of 24 is stopped. As a result, the upward movement of the apparatus body 115 also stops.

After this, contrary to the case described above, when the examiner first turns the joystick 102 slightly counterclockwise with the right hand, the apparatus main body 115 is driven downward, and then the examiner with the right hand after a predetermined time. When turned slightly clockwise, the device main body 115
The descending movement of is stopped.

After that, the examiner's joystick 102
Will be manually aligned.

In this way, the raising / lowering drive of the apparatus main body 115 can be realized by a simple operation, and in particular, the operation of automatically lowering and lowering the apparatus main body 115 to the lowermost part can be quickly performed, and it can be stored and transported. In this case, it is possible to speed up the storage processing in the carrying case. In this case, the lowering of the apparatus main body 115 is regulated by the lower limit switch although not shown.

It should be noted that the rotary encoder 161 may be replaced by the rotary state detector 220, and the rotary direction may be detected.

13 to 15 show a modification of this embodiment. In this case, the configuration of the Y driver 204 of the control system is changed as shown in FIG. Joystick 1 based on 220 detection signal
Rotation direction determination unit 221 that determines the rotation start direction of 02.
And the signal from the rotation direction determination unit 221 and the signal from the rotary encoder 161 are fetched.
And a drive switching unit 222 for switching drive of 24.

In this modification, when the examiner turns the joystick 102 slightly clockwise with his / her right hand as shown in FIG. 12, the rotation state detector 220 detects the clockwise start of the joystick 102, and FIG. As shown, the rotation state detector 220 sends a detection signal to the control circuit 80, which indicates a clockwise rotation. Based on the control of the control circuit 80, the rotation direction determination unit 221 determines that the rotation start of the joystick 102 is a clockwise rotation and sends a determination signal to the drive switching unit 222. As a result, the drive switching section 222 sends a drive pulse of a predetermined cycle to the motor 104 via the driver section 224 to rotate the motor 104 to drive the apparatus main body 115 upward.

Next, when the apparatus main body 115 moves upward and reaches the fine movement range for the eye to be inspected, the sensor 41 outputs an area signal indicating that it has reached the fine movement range, as shown in FIG. The drive switching unit 222 includes the control circuit 80.
Based on the control, the drive based on the determination signal from the above-described rotation direction determination unit 221 for the driver unit 224 is switched to the drive based on the signal from the rotary encoder 161 according to the rotation operation of the joystick 102.
Thereby, the examiner can perform alignment adjustment by the manual operation of the joystick 102 after the time when the device body 115 reaches the fine movement range, and the alignment work of the device body 115 in the Y direction can be made highly accurate. Becomes The alignment adjustments in the X and Z directions are mainly performed by tilting the joystick 102, but the detailed description thereof will be omitted.

After this, a process of completing the alignment adjustment in the Y direction with respect to the eye E to be inspected, an air flow is blown from the air flow blowing nozzle 12 toward the cornea C, and the corneal deformation amount at that time is detected by the corneal deformation detection optical system 50. The measurement process of the ophthalmologic apparatus S for obtaining the intraocular pressure value of the eye E from the air flow blowing pressure when the predetermined deformation amount is performed.

FIG. 16 shows still another modification of the present embodiment. In this case, instead of the Y-direction driver 204 shown in FIG. 13, the rotation state detecting section 220 and the direction determining section 221 are replaced. Is omitted, and a rising or falling signal from the up / down switch 231 and a stop signal from the stop switch 232 are input to the drive switching unit 222 to input the driver unit 22.
Y direction driver 2 so as to perform switching drive for 4
04 is configured. Even with such a configuration, it is possible to achieve the same operational effect as in the case described above by a simple operation using the up / down switch 231 and the stop switch 232.

The present invention can be similarly applied to various other ophthalmologic apparatuses using a joystick such as a fundus camera and a slit lamp, in addition to the above-described embodiment.

[0067]

According to the present invention, it is possible to speed up the alignment work of the apparatus main body in the vertical direction, and also to speed up the storage process in the carrying case during storage and transportation. A device can be provided.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an optical system of an ophthalmologic apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing an optical system of the ophthalmologic apparatus of the present embodiment.

FIG. 3 is an explanatory diagram showing a state of incidence and reflection of XY alignment target light on the cornea in the ophthalmologic apparatus of the present embodiment.

FIG. 4 is a schematic diagram of an XY alignment target projection optical system in the case where the effective diaphragm is not provided (FIG. 4A) and the effective diaphragm is provided (FIG. 4B) in the ophthalmologic apparatus of the present embodiment. Is.

FIG. 5 is a diagram showing a bright spot image of XY alignment visual target light K and an alignment assistance mark displayed on the screen of the monitor device of the ophthalmologic apparatus of the present embodiment.

FIG. 6 is an explanatory diagram showing a state of incidence and reflection of Z alignment light on the cornea of the ophthalmologic apparatus of the present embodiment.

FIG. 7 is a schematic side view of the ophthalmologic apparatus of the present embodiment.

FIG. 8 is a schematic plan view of the ophthalmologic apparatus of the present embodiment.

FIG. 9 is an enlarged sectional view showing the joystick of the present embodiment.

FIG. 10 is a block diagram showing a control system of the ophthalmologic apparatus of the present embodiment.

FIG. 11 is a timing chart showing the relationship between the signal of the rotation state detection unit and the output of the driver unit when the joystick of the present embodiment is started by turning it clockwise and counterclockwise.

[FIG. 12] A joystick of the present embodiment is turned clockwise,
It is an explanatory view showing a state of turning counterclockwise.

FIG. 13 is a block diagram showing a modification of the control system of the ophthalmologic apparatus of this embodiment.

FIG. 14 is a timing chart showing the relationship among the signal of the rotation state detection unit, the area signal, and the output of the driver unit in the case of the modification shown in FIG.

FIG. 15 is an explanatory diagram showing a state in which the apparatus body in the modified example shown in FIG. 13 is driven to rise with respect to the eye to be examined.

FIG. 16 is a block diagram showing still another modified example of the control system of the ophthalmologic apparatus of the present embodiment.

[Explanation of symbols]

10 Anterior segment observation optical system 19 CCD camera 20 XY alignment target projection optical system 30 Fixation target projection optical system 40 XY alignment detection optical system 42 XY alignment detection circuit 50 Corneal Deformation Detection Optical System 60 Z Alignment Target Projection Optical System 70 Z alignment detection optical system 74 Z alignment detection circuit 80 control circuit 81 Monitor device 100 base 101 stand 102 joystick 103 switch button 104, 108, 112 motors 161 rotary encoder 200 Mode setting section 204 Y direction driver 208 X direction driver 212 Z direction driver 220 Rotation state detector 221 Direction determination unit 222 Drive switching unit 224 Driver part 231 up / down switch 232 Stop switch E eye to be examined S ophthalmic device

Claims (2)

[Claims] 1. An apparatus main body having an optical unit for measurement or observation that moves up and down with respect to an eye to be inspected, and a rotation operation means for vertically moving the apparatus main body by a rotation operation. An ophthalmologic apparatus that vertically moves the apparatus main body in a moving direction and a moving amount or a moving speed according to a rotating direction and a rotating amount or a rotating speed of A rotation state detecting means for detecting a rotation start in a direction opposite to the start direction, and a rotation state detection means for detecting a rotation start in either direction by the rotation state detection means. An ophthalmologic apparatus comprising: an up-and-down drive control unit that drives and stops the drive of the apparatus body based on a detection signal of rotation start in the opposite direction. 2. An apparatus main body having an optical unit for measurement or observation which moves up and down with respect to an eye to be inspected, and a rotation operation means for vertically moving the apparatus main body by a rotation operation. An ophthalmologic apparatus for vertically moving the apparatus main body in a moving direction and a moving amount or a moving speed according to the rotating direction and the rotating amount or the rotating speed of the rotating operation means, the rotating state detecting rotation start in any direction. Detecting means, detecting means for detecting arrival of the device body to a predetermined alignment range with respect to the eye to be inspected, and either one of the upper and lower sides of the device body based on the detection signal of rotation start in either direction by the rotation state detecting means. And a moving direction and a moving amount or a moving speed corresponding to a rotating direction and a rotating amount or a rotating speed of the rotation operating means based on a detection signal of the detecting means. An ophthalmologic apparatus comprising: a vertical drive control means for switching the main body to vertical drive.