JPH05317250A - Ophthalmic device - Google Patents

Abstract

PURPOSE:To quickly execute a delicate alignment and a large movement of the opthalmic device. CONSTITUTION:A rotating speed of a rotary switch 17 becomes the quantity of light for passing through a slit disk 20 and is detected by an encoder 19, and inputted to waveform shaping circuits 21, 22. Outputs of the waveform shaping circuits 21, 22 are inputted to a flip-flop circuit 23 and detect the rotational direction of a motor drive circuit 24. Also, an output of the waveform shaping circuit 22 is inputted to one shot multivibrators 25, 26, and outputs of the one shot multivibrators 25, 26 are connected to timers 28, 29 and counters 30, 31, and moreover, connected to the motor drive circuit 24 through an socillating circuit 38 and gate circuits 27, 32, 34, 35, 37, 39 and 40, and control a stepping motor 16 so as to be switched by a rotating speed of the rotary switch 17 in accordance with a manipulated variable of the rotary switch 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic apparatus used in a fundus clinic or the like.

[0002]

2. Description of the Related Art Conventional alignment of an ophthalmologic apparatus is
The operating rod is operated to align the front-rear and left-right positions, and the rotating ring provided coaxially with the operating rod is rotated to align the vertical position. Both hands are often used for such alignment operations, and it is difficult to perform sufficient alignment when performing other operations such as adjusting the observation light amount or lifting the eyelids of the eye to be inspected. A method of rotating by is also devised.

Another method is known in which the vertical movement is electrified, but a slit lamp manufactured by Rodenstock is known as the most completed method. In this slit lamp, the switch lever is moved up and down to energize the electric motor to drive the slit lamp body up and down. The drive speed is switched in two steps according to the amount of operation of the switch lever.

In Japanese Patent Laid-Open No. 60-64314, a sliding base 2 is slidably mounted on a base 1 as shown in FIG. Is vertically movable, and the operating rod 3 is mounted so as to be tiltable and rotatable.
By tilting the operating rod 3, the sliding base 2 is finely moved to finely move the main body of the optical device. Furthermore,
The operating rod 2 is provided with through holes 4 opening at both upper and lower ends,
A center shaft 5 is inserted into the through hole 4 so as to be relatively rotatable, and the center shaft 5 is engaged with the slide base 2 in a state in which the center shaft 5 cannot rotate about the axis and can tilt. A switch 6 is provided on the upper end of the operating rod 2.
Is mounted, and a part of the wiring 7 between the switch 6 and the electric circuit provided in the slide base 2 is inserted through the center shaft 5.

Further, Japanese Utility Model Publication No. 63-62101 discloses that
A switch is attached to the upper end of the operating rod, the wiring from the switch is brought into contact with the sliding ring installed on the circumference of the drum through the inside of the operating rod, and the slider is brought into line contact with this sliding ring.
The switch signal is taken out from this slider.

Further, these ophthalmologic apparatuses may be provided with a so-called power saving mode in which the power is turned off when they are not used for a certain period of time.

[0007]

However, in the conventional example in which the operation rod is rotated, a large operation force is required for a large body such as a fundus camera, so that a delicate position adjustment is required. It may not be possible, or the position in the front-back, left-right direction may shift when rotating. Further, in the conventional example in which the electric motor is electrically driven, it is difficult to perform delicate alignment because the operation amount and the movement amount do not directly correspond to each other, and there is a limit to the drive speed when the device is moved largely. Therefore, there is a problem that a quick inspection cannot be performed.

Further, in the conventional example shown in FIG. 9, since the wiring 7 is inserted into the center shaft 5, the shape of the center shaft 5 becomes complicated, assembly and disassembly are difficult, and the cost becomes high. Furthermore, in Japanese Utility Model Publication No. 63-62101,
The wiring from the switch is brought into contact with the slide ring through the inside of the shaft of the operating rod, and the slider is brought into line contact with this slide ring to take out the signal.Therefore, it is necessary to use a brush for the wiring. It may occur.

In addition, when it has a power saving mode,
If it takes time to align the position and fill in the chart, the power saving mode is activated unexpectedly, and there is a troublesome problem that the switch must be operated again to cancel the power saving mode.

The object of the present invention is to solve the above-mentioned problems, to perform the position adjustment corresponding to the rotation speed of the switch lever, and to rapidly perform the large movement of the device, or the operation rod. It is an object of the present invention to provide an ophthalmologic apparatus which prevents a wire from being twisted or wound due to a turning operation or which appropriately operates in a power saving mode.

[0011]

An ophthalmologic apparatus according to a first aspect of the present invention for achieving the above object, an optical system for observing, photographing or measuring a predetermined position of an eye to be inspected, and driving the optical system. A rotation switch for driving the electric motor, a rotation amount detecting means for detecting a rotation amount of the rotation switch, and a rotation for detecting a rotation speed of the rotation switch. The motor includes a speed detection unit and a drive control unit that rotates the electric motor by an amount corresponding to the output of the rotation amount detection unit, and the output of the rotation amount detection unit and the electric motor according to the output of the rotation speed detection unit. It is characterized in that the correspondence relationship of the rotation amount of is changed.

In the ophthalmologic apparatus according to the second aspect of the present invention, a slide base is slidably mounted on a base, and an optical device body is vertically movable on the slide base, and the slide base is provided. An operating rod is attached to the shaft so as to be tiltable and rotatable about its axis, and a through hole is formed at both ends of the shaft core of the operating rod, and a center shaft is inserted into the through hole so as to be relatively rotatable. Is engaged with the slide base so as not to be rotatable and tiltable around the shaft center, and the slide base is finely moved horizontally by the tilting operation of the operation rod, and the optical device main body is vertically moved by the rotating operation of the operation rod. In the device for slightly moving in the direction, a push button is provided at the upper end of the through hole, and the signal is spatially transmitted through the inside of the center shaft by the operation of the push button.

Furthermore, the fundus device according to the third aspect of the present invention is characterized in that it has a power saving means, and the human body proximity detection means performs the transition to and cancellation of the power saving mode by the power saving means.

[0014]

In the ophthalmologic apparatus of the first invention having the above-mentioned structure, the control method of the electric motor is switched according to the rotation speed of the rotary switch, and when the rotary switch is gradually operated, the operation amount of the rotary switch is directly changed. Corresponding movements and faster actuation of the rotary switch will drive the motor at a higher speed and move significantly faster.

Further, in the fundus device of the second invention, through holes are formed at both upper and lower ends in the axial direction of the operating rod,
Insert the center shaft into the inside so that it can rotate relative to it, engage the center shaft in a state in which it cannot rotate and tilt around the shaft center, and arrange a push button at the upper end of the through hole to activate this push button. Thus, signal transmission is performed by an optical signal via the central axis.

Further, in the fundus device of the third aspect of the present invention, by providing the human body proximity detecting means, the presence or absence of the human body is detected to shift to or cancel the power saving state.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is a configuration diagram of the first embodiment, in which an optical device body 11 holding an optical system 10 for observing, photographing, or measuring an eye E to be inspected is vertically moved with respect to a base 14 by a guide pole 12 and a drive screw 13. The base 14 is movably connected in a direction, and the base 14 is movably connected to a horizontal alignment mechanism (not shown) to enable three-dimensional alignment with the eye E to be inspected. In addition, the drive screw 13
Is coupled to a stepping motor 16 via a gear 15, and the rotation of the stepping motor 16 causes the optical device body 11 to move in the vertical direction.

A rotary switch 17 for controlling the stepping electric motor 16 is rotatably mounted around the operating rod 18 and is provided at the base of the operating rod 18 for encoder 1.
The slit disk 20 used in correspondence with 9 is configured to rotate together with the rotary switch 17. The encoder 19 detects the amount of light passing through the slit disc 20 to detect the amount of rotation of the rotary switch 17. The output from the encoder 19 is the waveform shaping circuit 2
1, 22 and the output of the waveform shaping circuit 21 is connected to the flip-flop circuit 23. Slit disk 2
Since the phase of the two slits at 0 is shifted by 1/2, the flip-flop circuit 23 detects whether the rotation direction is clockwise or counterclockwise, and outputs the information to the motor drive circuit 24 to output the information to the stepping motor 16. Control the direction of rotation.

On the other hand, the output from the waveform shaping circuit 22 is a one-shot multivibrator 2 having a retrigger function.
5 and 26, and the output of one one-shot multivibrator 25 is connected to a gate circuit 27, timers 28 and 29 having a retrigger function, counters 30 and 31, and a gate circuit 32. The counters 30 and 31 are connected to the timer 28,
29 is reset at a "low level". The output of the counter 30 is connected to the gate circuit 27 via the inverter 33, and
4 is connected. The output of the counter 31 is output from the gate circuit 35 and the gate circuit 37 via the inverter 36.
An oscillator circuit 38 is connected to the gate circuit 35.

Further, the output of the other one-shot multivibrator 26 is connected to the gate circuit 32, the output of the gate circuit 32 is connected to the gate circuit 37, and the output of the gate circuit 37 is output together with the output of the gate circuit 35.
9 is connected. The output of the gate circuit 39 is connected to the output of the counter 30 and the gate circuit 34. The output of the gate circuit 34 is connected to the gate circuit 40 together with the output of the gate circuit 27, and the output of the gate circuit 40 is connected to the electric motor drive circuit 24 so as to control the speed of the stepping electric motor 16. The gate circuits 27, 34, 35 and 37 are AND gate circuits, and the gate circuits 32, 39 and 40 are OR gate circuits.

FIG. 2 is a timing chart showing the output of each element, which corresponds to the number of each element shown in FIG.
(a) is the input of the one-shot multivibrator 25,
(b) is the output of the one-shot multivibrator 26,
(c) is the output of the timer 28, (d) is the output of the counter 30,
(e) is the output of the gate circuit 37, (f) is the output of the gate circuit 32, (g) is the output of the timer 29, (h) is the output of the counter 31, (i) is the output of the oscillation circuit 38, and (j ) Is the gate circuit 3
5 shows the output, and (k) shows the output of the gate circuit 40.

With such a configuration, when the output from the encoder 19 is input to the one-shot multivibrator 25 via the waveform shaping circuit 22, the input waveform at this time is shown in FIG. The waveform is as shown in a). The one-shot multivibrator 25 uses the rising edge of the waveform in (a) as a trigger.
A waveform with a constant pulse width as shown in (b) is output, and this pulse interval equivalently indicates the rotation speed of the rotary switch 17.

The timers 28 and 29 are for determining the threshold value of the rotation speed of the rotary switch 17, and the timers 28 and 29 are
The counters 30 and 31 operate only for the time determined by 29. In this embodiment, the determined time is set to "high level", and the counters 30 and 31 output "high level" when two or more pulses are input. When there is only one pulse within the time T1 determined by the timer 28, that is, when the rotation speed of the rotary switch 17 is "low speed", the output of the counter 30 remains "low level", so the gate circuit 27 Is valid and the gate circuit 34 is invalid, the output of the one-shot multivibrator 25 is output as it is to the output of the gate circuit 40, and an output pulse like the range A shown in FIG. Entered in. That is, the stepping electric motor 16 is directly controlled in a one-to-one correspondence with the output of the encoder 19.

Next, there are two or more pulses within the time T1 determined by the timer 28 and the time T2 determined by the timer 28.
When the number of pulses is one, that is, when the rotation speed of the rotary switch 17 is "medium speed", the output of the counter 30 is the time.
"High level" at the second rise of the input pulse in T1
Then, the gate circuit 27 becomes invalid and the gate circuit 34 becomes valid. Here, since there is only one input pulse within the time T2, the counter 30 remains "low level", the gate circuit 35 is invalid, and the gate circuit 37 is valid.

The output of the gate circuit 32 is the logical sum of the output of the one-shot multivibrator 25 which produces a pulse at the rising edge of the output of the waveform shaping circuit 22 and the output of the one-shot multivibrator 26 which produces a pulse at the falling edge. , The waveform is as shown in Fig. 2 (f). Therefore,
Since the gate circuit 37 becomes effective, after the second pulse within the time T1, the output of the gate circuit 32 becomes the output of the gate circuit 40 as it is, and the waveform becomes like the range B shown in (k). Input to the motor drive circuit 24.

Further, when there are two or more pulses within the time T2, that is, when the rotation speed of the rotary switch 17 is "high", the gate circuit 27 is invalid and the gate circuit 34 is valid as described above. .. Here, the counter 31 indicates time T2
After the second pulse in the above, it becomes "high level", the gate circuit 35 is valid, the gate circuit 37 is invalid, the output of the oscillation circuit 38 becomes the output of the gate circuit 40 as it is, and the waveform is as shown in FIG. It becomes like the range C shown in k). Since the frequency of the oscillation circuit 38 is sufficiently high, the stepping motor 1
6 will rotate continuously in range C.

As described above, the rotation speed of the rotary switch 17 is input to the one-shot multivibrators 25 and 26 as an output pulse of the encoder 19, and the rotation speed of the rotary switch 17 is changed according to the interval of the output pulses of the one-shot multivibrator 26. Since the ratio between the rotation amount and the rotation amount of the stepping motor 16 can be changed, the stepping motor 16 can be continuously rotated when the rotation switch 17 rotates sufficiently fast.

It should be noted that, in order to provide uniformity with the conventional manually operated device, it is preferable to arrange the rotary switch 17 in the same arrangement as the rotary ring or apply the rotation of the operating rod 18 itself. Further, in the present embodiment, the rotation amounts of the rotary switch 17 and the stepping motor 16 are switched in two stages, but there is no problem even if the same circuits are combined in multiple stages.

Further, instead of configuring the control of the drive system by using a hard circuit as in this embodiment, software control by a computer may be used. In any case, making the control of observation, imaging or measurement and the control of alignment completely independent not only simplifies the configuration of the device but also enhances the responsiveness of each switch. But it's important.

FIG. 3 is a plan view of the second embodiment, and FIG.
Is a side view, and FIG. 5 is a cross-sectional view of the operating rod portion. Two rails 52a and 52b are arranged in parallel on the base 51,
A plurality of conical protrusions 53 are provided on the rails 52a and 52b at equal intervals in the longitudinal direction. A sliding base 54 is placed on the base 51, a lateral guide shaft 55 penetrating the front side of the sliding base 54 is rotatably held, and wheels 56a and 56b are fixed to both ends thereof. Has been done. Wheels 56a,
The projection 53 on the rails 52a and 52b is provided on the peripheral surface of 56b.
A plurality of engagement holes 57a, 57b formed at the same intervals as the above are opened, and the engagement holes 57a, 57b are formed on the rails 52a, 5b.
The slide base 54 engages with the protrusion 53 on the 2b and the lateral guide shaft 55
It is designed to be displaced in a direction orthogonal to. Also,
A column 58 is attached to the front side of the sliding base 54, and an optical device body 59 is fixed to the upper end of the column 58. Post 58
Is composed of a vertically extending female screw cylinder and a male screw, and is fixed to an elevating table which is fixed by a guide shaft so as not to rotate. The upper part of the upper wall 54a of the sliding table 54 is provided with an operating rod as shown in FIG. An insertion hole 61 for inserting 60 is formed. In the insertion hole 61, an upper end portion of a ball receiving and holding cylinder 62 is rotatably held via a bearing 63, and a timing belt pulley 64 is fixed to the lower end portion of the ball receiving and holding cylinder 62 with a screw 65. The timing belt pulley 64 is connected via a timing belt 66 to a female screw cylinder (not shown) provided on the support column 58 and a timing pulley attached to a male screw.

A ball receiver 67 is disposed in the ball receiver holding tube 62. The ball receiver 67 has a ring-shaped upper ball receiver member 68 having a tapered surface that expands downward and faces upward. It is composed of a ring-shaped lower ball receiving member 69 having a tapered surface that widens and expands. A step 70 is provided on the outer periphery of the lower ball receiving member 69, and a compression spring 72 is interposed between the step 70 and the step 71 of the timing belt pulley 64. Therefore, the upper ball receiving member 68 and the lower ball receiving member 6
The upper ball receiving member 68 is elastically bonded to the inner flange portion of the ball receiving and holding tube 62 while being elastically contacted with each other. A pin insertion hole 73 is formed between the upper ball receiving member 68 and the lower ball receiving member 69, and a base of a rotation restricting pin 75 is fitted in the hole 74 of the ball receiving and holding cylinder 62. A flange portion 75a provided at an intermediate portion of the rotation restricting pin 75 prevents the rotation restricting pin 75 from coming out of the hole 74, and a tip portion of the rotation restricting pin 75 projects inside the ball receiver 67.

The peripheral portions of the bearing 63 and the ball receiving and holding cylinder 62 are covered with a ring-shaped cover 76, and the cover 76 is fixed to the slide base 54 with screws 77. Operating rod 6
0 is inserted into the ball receiver 67 from the center of the cover 76, and the spherical portion 78 at the lower end portion of the operating rod 60 is rotatably held by the ball receiver 67. The spherical portion 78 has a horizontal rotation extending vertically. A motion restriction groove 79 is formed, and the tip of the rotation restriction pin 75 is inserted.

On the other hand, a through hole 80 opened at both upper and lower ends is formed in the shaft core of the operating rod 60, and a center shaft 81 is formed in the through hole 80.
Has been inserted. The center shaft 81 is a bearing 82a, 82
It is rotatably held on the operating rod 60 via b. A spherical portion 83 is formed at the center of the center shaft 81, and the operating rod 60
It is adapted to be located in a recess 78a provided in the spherical portion 78 of the. In addition, the spherical portion 78 of the operating rod 60 and the central shaft 8
The spherical portions 83 of No. 1 are arranged so that their centers coincide with each other.

A plate 84 is arranged in the slide base 54, and the peripheral edge of the plate 84 is fixed to the lower portion of the side wall of the slide base 54. A control rod 60 is provided at the center of the plate 84.
The tubular portion 84a extending into the concave portion 78a is integrally formed, and the spherical portion 83 of the center shaft 81 is inserted into the tubular portion 84a. The rotation restricting pin 85 fixed to the tubular portion 84a is provided on the center shaft 8
It is inserted in a horizontal rotation regulating groove 86 formed in the first spherical portion 83 and extending in the vertical direction.

Further, a protrusion 88 is projected downward at the center of the friction fixing plate 87 provided on the lower portion of the slide base 54, and a ball receiving hole 89 is formed inside thereof. .. Protrusion 8
8 is in contact with the friction plate 90 fixed to the base 51, and the ball receiving hole 8
A spherical portion 91 at the lower end of the center shaft 81 is inserted into the shaft 9, and a ring-shaped dry bearing member 92 having low frictional resistance is interposed between the peripheral edge of the friction fixing plate 87 and the plate 84. .. A horizontal rotation restriction groove 93 extending in the vertical direction is opened in the ball receiving hole 89, and a rotation restriction pin 94 mounted on the spherical portion 91 is inserted into the horizontal rotation restriction groove 93.

A light emitting element 95 is provided inside the operating rod 60.
A battery 96 is provided, and a lid 97 is attached to the upper part thereof. A push button type switch 98 is screwed onto the lid 97,
When the switch 98 is pressed, the light emitting element 95 emits light. A hole 100 communicating with the space 99 in the operating rod 60 is formed in the center shaft 81, and the lower end of the hole 100 is located at a position opposite to the horizontal rotation restricting groove 79 and is directed laterally to the peripheral surface of the spherical portion 83. It is open. In addition, the hole 1 is provided in the upper portion of the tubular portion 84a.
A notch 101 corresponding to the opening at the lower end of 00 is formed.

Further, the light receiving element 10 is provided at the lower end of the hole 100.
2 is fixed, and the wiring 103 from the light receiving element 102 passes through the notch 101 and is arranged along the plate 84.
The other end of the wiring 103 is connected to a shutter circuit that controls the shutter of the optical device body 59. It should be noted that the shutter circuit composed of an electronic circuit can be arranged in the slide base 54 or the optical device main body 59.

In such a configuration, the optical device body 5
In order to make the optical axis of 9 coincide with the optical axis of the eye E, first, the slide base 54 is roughly moved back and forth and left and right, and then the operating rod 60 is operated forward F or backward B as shown in FIG. .. Operating rod 6
When 0 tilts in the direction of arrow F or arrow B around the spherical portion 78, the spherical portion 83 of the center shaft 81 revolves in the tubular portion 84a. Further, the protrusion 88 of the friction fixing plate 87 is frictionally fixed on the base 51 by the weight of the sliding base 54 side, and the dry bearing material 92 is interposed between the friction fixing plate 87 and the plate 84. Therefore, when the operating rod 60 tilts back and forth, the plate 84 and the friction fixing plate 87 relatively move forward or backward, and the slide base 54 slightly moves forward or backward.

When the operating rod 60 is operated to the right R or the left L as shown in FIG. 3, the operating rod 60 tilts in the directions of arrows R and L around the spherical portion 78. At this time, the central shaft 8
The spherical portion 83 of No. 1 rotates within the tubular portion 84a, and the rotation regulating pins 85 and 94 and the horizontal rotation regulating grooves 86 and 93 are relatively rotationally displaced. Further, when the operation rod 60 is rotated about the axis, the timing fixed to the male screw or the female screw cylinder (not shown) via the rotation restricting pin 75, the ball receiving and holding cylinder 62, the timing belt pulley 64, and the timing belt 66. The belt is rotated, and the elevating table connected to the belt is moved up and down to finely move the optical device body 59 up and down. Here, the center shaft 81
Since rotation in the circumferential direction is blocked by the rotation restricting pin 85 and the horizontal rotation restricting groove 86, even if the operating rod 60 is rotated about its axis, the center shaft 81 rotates about its axis. do not do.

By such a coarse movement and a fine movement operation, the optical axis of the optical device main body 59 is aligned with the optical axis of the eye E to be inspected, and when the switch 98 on the upper portion of the operating rod 60 is pushed, the light emitting element operated by the battery 96 95 emits light, and the luminous flux is the middle cylinder 81.
The light is received by the light-receiving element 102 via the line 103 and transmitted via the wiring 103, the shutter of the optical device main body 59 is operated, and the fundus of the eye E to be examined is photographed.

In FIG. 5, an ultrasonic wave transmitting element may be provided in place of the light emitting element 95 and an ultrasonic wave receiving element may be arranged in place of the light receiving element 102 to perform ultrasonic wave signal transmission.

FIG. 6 is a cross-sectional view of the third embodiment. Here, a reflecting plate 104 and a lid 105 for covering it are provided in place of the light emitting element 95, and instead of the light receiving element 102, both light emission and light reception are performed. A retroreflective element 106 having a function is provided. Further, a push button 107 is provided in the upper portion of the operating rod 60 instead of the switch 98, and a lower portion thereof has a return spring 108.
It comes in contact with the lid 105 via the. The lid 105 is attached by a return coil spring 109 so as to return to its original position when the push button 107 is not pressed.

In this embodiment, the retroreflective element 106 always emits light. When the push button 107 is pressed to open the lid 105 and the reflecting plate 104 is projected to the position shown by the dotted line in the space 99, the retroreflective element is shown. A light projection signal from the light emitting unit 106 is reflected by the reflecting plate 104, the depression of the push button 107 is detected by the light receiving unit, and fundus photography is performed.

FIG. 7 is a block diagram of the fourth embodiment, in which a far-infrared sensor 110 for detecting far-infrared rays emitted from a human body is installed on the examiner M side of the optical device main body 59. The output of the sensor 110 is connected to the controller 112 via the timer 111 as shown in FIG. 8, and the output of the controller 112 is connected to the power saving mode drive device 113.

When the far-infrared sensor 110 no longer detects the far-infrared rays emitted from the examiner M, which has been detected until then, inputs a signal to the timer 111. The timer 111 outputs a signal to the controller 112 after a predetermined time. The controller 112 detects the signal, outputs a power saving mode driving signal to the power saving mode drive device 113, and shifts the optical device body 59 to the power saving mode.

Next, while the optical instrument main body 59 is in the power saving mode, or while the timer 111 measures the elapsed time because the examiner M has left the optical instrument,
When the examiner M returns to the optical device main body 59 side, the far infrared sensor 110 detects far infrared rays emitted by the examiner M, and the timer 1
11, outputs a signal to the controller 112. If the time for the timer 111 to enter the power saving mode is being measured, the measurement is stopped. At the same time, the controller 112
Outputs a signal for canceling the power saving mode to the power saving mode drive device 113 to cancel the optical device main body 59 from the power saving mode.

As described above, it is troublesome for the examiner M to shift to the power saving mode against the will of the examiner M while using the optical device or to operate the switch to release the power saving mode. It becomes unnecessary, and the shift to and cancellation of the power saving mode will be performed automatically.

[0048]

As described above, the ophthalmologic apparatus according to the first aspect of the present invention has a simple structure in which the electric motor is driven in accordance with the operation amount of the rotary switch, and the observation, photographing or measurement control and alignment are performed. And can be done independently. Therefore, even in an ophthalmologic apparatus whose body weight is relatively heavy, delicate alignment can be performed more quickly.

Further, in the ophthalmologic apparatus according to the second aspect of the present invention, a through hole is bored in the axial center direction of the operating rod, the inner shaft is inserted therein, and wiring is provided for transmitting a signal by an optical signal through the inner shaft. It becomes unnecessary and there is no fear that the wiring will be twisted and broken. Further, since no wiring is required, the structure and assembly are simple, which is advantageous in terms of cost.

Further, in the ophthalmologic apparatus according to the third aspect of the present invention, by providing the human body detecting means, the transition to the power saving mode and the cancellation thereof are performed depending on the presence / absence of the examiner, and the power saving mode is shifted against the intention of the examiner. It is possible to prevent the trouble and save the trouble for canceling the power saving mode.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment.

FIG. 2 is a timing chart diagram.

FIG. 3 is a plan view of the second embodiment.

FIG. 4 is a side view.

FIG. 5 is a sectional view of an operating rod portion.

FIG. 6 is a sectional view of an operating rod portion of a third embodiment.

FIG. 7 is a configuration diagram of a fourth embodiment.

FIG. 8 is a block circuit configuration diagram.

FIG. 9 is a cross-sectional view of a conventional operating rod portion.

[Explanation of symbols]

11, 59 Optical device main body 16 Stepping electric motor 17 Rotation switch 18, 60 Operating rod 19 Encoder 20 Slit disk 23 Flip-flop circuit 24 Electric motor drive circuit 25, 26 One-shot multivibrator 28, 29, 111 Timer 30, 31 Counter 27, 32, 34, 35, 37, 39, 40 Gate circuit 51 Base 54 Sliding base 80 Through hole 81 Center axis 95 Light emitting element 96 Battery 98 Switch 102 Light receiving element 104 Movable reflector 106 Retroreflective element 107 Push button 110 Far infrared sensor 112 controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Ito 53 Imaiue-cho, Nakahara-ku, Kawasaki-shi, Kanagawa Canon Inc. Kosugi Plant

Claims (10)

[Claims] 1. An ophthalmologic apparatus having an optical system for observing, photographing or measuring a predetermined position of an eye to be inspected, and an electric motor for driving the optical system, a rotary switch for driving the electric motor, Rotation amount detecting means for detecting the rotation amount of the rotation switch, rotation speed detecting means for detecting the rotation speed of the rotation switch, and rotating the electric motor by an amount corresponding to the output of the rotation amount detecting means. An ophthalmologic apparatus comprising: drive control means for controlling the output of the rotation amount detection means and the rotation amount of the electric motor according to the output of the rotation speed detection means. 2. The drive control means, when the rotation speed of the rotation switch exceeds a predetermined value, continuously drives the electric motor in a direction corresponding to the rotation direction of the rotation switch by the output of the rotation speed detection means. The ophthalmologic apparatus according to claim 1, wherein the ophthalmologic apparatus is adapted to be rotated. 3. The ophthalmologic apparatus according to claim 1, wherein the rotary switch is arranged coaxially with an operating rod for moving the optical system back and forth and left and right. 4. The ophthalmologic apparatus according to claim 1, wherein the rotary switch is an operating rod for moving the optical system back and forth and left and right. 5. A sliding base is slidably mounted on a base, an optical device main body is provided on the sliding base so as to be vertically movable, and an operating rod is tiltable on the sliding base and can rotate around an axis line. The operation rod is rotatably attached to the operation rod, and through-holes are opened at both ends of the shaft core of the operation rod. The center shaft is relatively rotatably inserted into the through-hole, and the center shaft cannot be rotated and tilted about the shaft center. A device that engages with the slide base as much as possible, horizontally finely moves the slide base by tilting the operation rod, and finely moves the optical device main body vertically by rotating the operation rod. An ophthalmologic apparatus characterized in that a push button is provided at the upper end of the hole, and a signal is spatially transmitted through the inside of the center shaft by the operation of the push button. 6. A light emitting element that emits light by the push button is provided above the through hole, and a light receiving element is disposed below the through hole, and light emitted from the light emitting element is received by the light receiving element to transmit a signal. The ophthalmic apparatus according to claim 5, wherein 7. An ultrasonic wave transmitting element that transmits by operating the push button is provided above the through hole, and an ultrasonic wave receiving element is arranged below the through hole, and an ultrasonic wave signal from the ultrasonic wave transmitting element is arranged. The ophthalmologic apparatus according to claim 5, wherein the ultrasonic receiving element receives and transmits a signal. 8. A movable reflection plate operated by the push button is arranged above the through hole, and a recursive reflection type element having a light emitting portion and a light receiving portion is arranged below the through hole, and The ophthalmologic apparatus according to claim 5, wherein the projected light is reflected by the movable reflecting plate and received by the light receiving unit to perform signal transmission. 9. An ophthalmologic apparatus comprising a power saving means, wherein the human body proximity detection means performs the transition to and cancellation of the power saving mode by the power saving means. 10. The ophthalmologic apparatus according to claim 9, wherein the human body proximity detection means uses far infrared rays.