JP2018126325A - Ophthalmologic apparatus and operation method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ophthalmologic apparatus that allows an operator to perform an operation related to movement control of an eye characteristic acquisition unit intuitively, and an operation method thereof.SOLUTION: An ophthalmologic apparatus includes a base, an eye characteristic acquisition unit for acquiring eye characteristics of an eye to be examined, a driving unit provided to the base for moving the eye characteristic acquisition unit in a predetermined axial direction with respect to the base, a pushing and pulling operation detection unit for detecting a pushing and pulling operation that pushes or pulls at least one of the eye characteristic acquisition unit and the driving unit in an axial direction, and a movement control unit for controlling the drive of the driving unit and executing specific movement control, which is movement control of the eye characteristic acquisition unit associated with a specific operation pattern, based on the specific operation pattern of the pushing and pulling operation detected by the pushing and pulling operation detection unit.SELECTED DRAWING: Figure 15

Description

  The present invention relates to an ophthalmologic apparatus for measuring eye characteristics of an eye to be examined and a method for operating the same.

  In ophthalmology, acquisition (measurement, imaging, observation, etc.) of various eye characteristics such as eye refractive power, intraocular pressure, and the number of corneal endothelial cells of a subject eye is performed by an ophthalmologic apparatus. In this case, from the viewpoint of the accuracy, accuracy, image quality, and the like of the acquired eye characteristics, alignment, that is, alignment of the measurement unit (eye characteristics acquisition unit) of the ophthalmologic apparatus with respect to the eye to be examined is extremely important. For this reason, the ophthalmologic apparatus is provided with a configuration for adjusting the alignment by moving the measurement unit relative to the base.

  Patent Documents 1 and 2 describe an ophthalmologic apparatus in which a measurement unit is moved by an electric drive unit. In the ophthalmologic apparatuses described in Patent Documents 1 and 2, the measurement unit is moved by controlling the drive of the drive unit by, for example, tilting the operation lever. Thus, manual alignment can be performed by tilting the operation lever. Moreover, in the ophthalmologic apparatus described in Patent Documents 1 and 2, so-called full-auto alignment (hereinafter referred to as “automatic alignment”) in which the alignment of the measurement unit with respect to the eye to be examined is detected and the drive of the driving unit is controlled based on the detection result. Simply referred to as auto-alignment).

  By the way, in recent years, multi-functionalization of an ophthalmic apparatus has progressed, and it is difficult to perform all operations of the ophthalmic apparatus with only an operation lever. For this reason, Patent Document 3 describes an ophthalmologic apparatus including a touch panel monitor that displays operation screens (icons and the like) related to various operations of the ophthalmologic apparatus in addition to the operation lever. In the ophthalmologic apparatus described in Patent Document 3, by performing a touch operation (including a tap operation) on an icon on the operation screen displayed on the screen of the touch panel monitor, driving of the driving unit and auto alignment are performed. Various operations related to movement control of the measurement unit such as emergency stop can be performed.

Japanese Patent Laid-Open No. 2015-234 JP 2014-23960 A Japanese Patent Laying-Open No. 2015-167683

  However, in the ophthalmologic apparatus described in Patent Document 3, when various operations related to the movement control of the measurement unit are performed, an icon of an operation screen displayed on a limited area on the screen of the touch panel monitor or the like Need to be touched. For this reason, the operator cannot perform an intuitive operation unlike the case of operating the operation lever. In particular, when it is necessary to urgently stop auto alignment, it is difficult for the operator to find an emergency stop icon on the screen and perform a touch operation. In this case, in order to make it easy to recognize the icon for emergency stop, it may be possible to make the icon large on the screen. For example, a touch panel for confirming the observation image of the eye to be examined and confirming the measurement result of the eye characteristics This may interfere with the normal use of the monitor.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide an ophthalmologic apparatus and an operating method thereof in which an operator can intuitively perform an operation related to movement control of an eye characteristic acquisition unit. To do.

  An ophthalmologic apparatus for achieving an object of the present invention is provided in a base, an eye characteristic acquisition unit that acquires eye characteristics of an eye to be examined, and the eye characteristic acquisition unit with respect to the base in a predetermined axial direction. A drive unit to be moved, a push-pull operation detection unit that detects a push-pull operation that pushes or pulls at least one of the eye characteristic acquisition unit and the drive unit in the axial direction, and a push-pull operation detected by the push-pull operation detection unit A movement control unit that controls driving of the driving unit based on the specific operation pattern and performs specific movement control that is movement control of the eye characteristic acquisition unit associated with the specific operation pattern.

  According to this ophthalmologic apparatus, the operator can automatically perform specific movement control of a desired eye characteristic acquisition unit only by performing a push-pull operation of a specific operation pattern on at least one of the drive unit and the eye characteristic acquisition unit. Can be executed.

  In the ophthalmologic apparatus according to another aspect of the present invention, the movement control unit performs specific movement control when the push-pull operation detected by the push-pull operation detection unit matches a specific operation pattern, In this case, based on the push / pull operation detected by the push / pull operation detection unit, the drive of the drive unit is controlled, and operation movement control is performed to move the eye characteristic acquisition unit according to the push / pull operation. Thereby, the specific movement control and the operation movement control of the eye characteristic acquisition unit can be switched according to the push-pull operation by the operator.

  In the ophthalmologic apparatus according to another aspect of the present invention, the push-pull operation detected by the push-pull operation detection unit is identified with reference to correspondence information stored in advance as a correspondence relationship between the specific operation pattern and the specific movement control. Whether or not the operation pattern is matched, and execution of specific movement control when it is determined that they match. Thereby, the specific movement control of the eye characteristic acquisition unit can be executed according to the push / pull operation of the specific operation pattern by the operator.

  In the ophthalmologic apparatus according to another aspect of the present invention, the push / pull operation detection unit detects the operation direction of the push / pull operation and the magnitude of the pressure of the push / pull operation, and the specific operation pattern is less than a predetermined threshold value. The movement control unit controls the operation movement when the pressure detected by the push-pull operation detection unit is equal to or greater than the threshold value in the case of a mismatch. When the pressure level is less than the threshold value, the operation movement control is stopped. Thereby, when executing the specific movement control of the eye characteristic acquisition unit, erroneous execution of the coarse motion control of the eye characteristic acquisition unit unintended by the operator is surely prevented.

  In the ophthalmologic apparatus according to another aspect of the present invention, the drive unit includes a first engagement unit that moves integrally with the eye characteristic acquisition unit, a second engagement unit that engages with the first engagement unit, and a second engagement unit. A drive source that moves the engaging portion along the axial direction, the first engaging portion and the second engaging portion have opposing surfaces that face each other in the axial direction, and the push-pull operation detecting portion is The pressure sensors are respectively connected to the opposing surfaces of the first engaging portion and the second engaging portion, and are compressed or extended between the opposing surfaces in accordance with the operation direction. The operation direction of the push-pull operation and the magnitude of the pressure of the push-pull operation can be detected with a simple configuration using the pressure sensor.

  In the ophthalmologic apparatus according to another aspect of the present invention, the movement control unit drives the drive unit based on a signal from the eye characteristic acquisition unit to automatically align the eye characteristic acquisition unit with respect to the eye to be examined. In the specific movement control, the first movement control for stopping the movement of the eye characteristic acquisition unit during execution of the auto alignment mode, and the eye characteristic acquisition unit during the execution of the auto alignment mode toward the eye to be examined. And a second movement control for stopping the eye characteristic acquisition unit after moving it away from the eye to be examined during movement, and the movement control unit detects the first push-pull operation detected by the push-pull operation detection unit. The first movement control is performed when it matches the specific operation pattern corresponding to the movement control, and the second movement control is performed when the push-pull operation matches the specific operation pattern corresponding to the second movement control. It is carried out. Thereby, the operator can automatically execute the specific movement control of the desired eye characteristic acquisition unit.

  In the ophthalmologic apparatus according to another aspect of the present invention, for the specific movement control, the eye characteristic acquisition unit is moved from a position where one eye characteristic of both eyes of the eye to be examined is measured to a position where the other eye characteristic is measured. Third movement control to be moved is included, and the movement control unit performs the third movement control when the push-pull operation detected by the push-pull operation detection unit matches a specific operation pattern corresponding to the third movement control. . Thereby, the operator can automatically execute the specific movement control of the desired eye characteristic acquisition unit.

  An operation method of an ophthalmologic apparatus for achieving an object of the present invention includes a base, an eye characteristic acquisition unit that acquires eye characteristics of an eye to be examined, and a base, and the eye characteristic acquisition unit is predetermined with respect to the base In the operation method of the ophthalmologic apparatus, the push-pull operation detection unit is a push-pull operation for at least one of the eye characteristic acquisition unit and the drive unit, and the push operation or pull is performed in the axial direction. Based on a specific operation pattern of the push-pull operation detected by the push-pull operation detection unit by the detection process for detecting the push-pull operation to be operated and the movement control unit, the drive of the drive unit is controlled to obtain a specific operation pattern. A movement control step of performing specific movement control that is movement control of the associated eye characteristic acquisition unit.

  In the ophthalmologic apparatus and the operation method thereof according to the present invention, an operator can intuitively perform an operation related to movement control of the eye characteristic acquisition unit.

It is a side view of the ophthalmologic apparatus of this invention. It is sectional drawing which follows the 2-2 line in FIG. It is explanatory drawing for demonstrating movement operation of the Z-axis direction and X-axis direction of the measurement unit using an operation lever. It is explanatory drawing for demonstrating the kind of push-pull operation of a Z-axis direction. It is explanatory drawing for demonstrating the kind of push-pull operation of a X-axis direction. It is a side view of a Z-axis pressure sensor that detects a change in pressure in the Z-axis direction accompanying a push-pull operation in the Z-axis direction. It is explanatory drawing for demonstrating the detection of the pressure of a Z-axis direction by the Z-axis pressure sensor when the pushing / pull operation in a Z-axis direction is performed. It is a block diagram which shows the electric constitution of the control part provided in the ophthalmologic apparatus. It is explanatory drawing for demonstrating the coarse motion control of the Z-axis direction of a measurement unit by a movement control part, and an X-axis direction. It is the graph which showed an example of the pressure change which shows the relationship between the pressure each detected by the Z-axis pressure sensor and the X-axis pressure sensor at the time of coarse motion control, and time. It is explanatory drawing which showed an example of correspondence information. It is explanatory drawing which showed the relationship between each specific operation pattern memorize | stored in correspondence information, and the change pattern of the pressure detected by each pressure sensor. It is explanatory drawing for demonstrating "alignment control" and "1st alignment stop control" which are specific movement control. It is explanatory drawing for demonstrating "left-right switching movement control" which is specific movement control. It is a flowchart which shows the flow of the movement control of the measurement unit which a movement control part performs according to pushing / pull operation with respect to at least any one of an electric drive part, a measurement unit, and an operation lever. It is a flowchart which shows the flow of the measurement of the eye characteristic by an ophthalmologic apparatus. It is explanatory drawing for demonstrating the detection of push-pull operation of the Z-axis direction by another structure, and an X-axis direction.

[Configuration of ophthalmic apparatus]
FIG. 1 is a side view of an ophthalmic apparatus 10 of the present invention. The ophthalmologic apparatus 10 acquires (hereinafter simply abbreviated as “measurement”) measurement, observation, and imaging of various eye characteristics of the eye E of the subject. Examples of such an ophthalmologic apparatus 10 include a fundus camera, an optical coherence tomography (OCT), a scanning laser Ophthalmoscope (SLO), an axial length meter, a slit lamp, a refractometer, a keratometer, a tonometer, a specular microscope, and a composite machine thereof. Etc. are mentioned as examples.

  Here, the X-axis direction in the figure is the left-right direction with respect to the subject (the eye width direction of the eye E), the Y-axis direction is the vertical direction, and the Z-axis direction is before approaching the subject. The front-rear direction (also referred to as a working distance direction) is parallel to the direction and the rear direction away from the subject. Therefore, the Z-axis direction and the X-axis direction are included in the horizontal direction.

  As shown in FIG. 1, the ophthalmic apparatus 10 includes a main body base 12 (also referred to as a base) corresponding to the base of the present invention, a face support portion 13, and an electric drive portion 14 corresponding to the drive portion of the present invention. The measuring unit 15 corresponding to the eye characteristic acquisition part of this invention, the monitor 16, and the operation lever 17 equivalent to the operation part of this invention are provided. A face support portion 13 is provided at the end of the main body base 12 on the front side in the Z-axis direction (subject side), and an electric drive portion 14 is provided on the upper surface of the main body base 12.

  The face support unit 13 has a chin rest and a forehead (not shown) whose positions can be adjusted in the Y-axis direction, and supports the face of the subject during measurement by the ophthalmologic apparatus 10.

  The electric drive unit 14 holds a measurement unit 15 (described later) on the main body base 12 so as to be movable in each of the XYZ axes. The electric drive unit 14 moves the measurement unit 15 in each axial direction of the XYZ axes with respect to the main body base 12 under the control of a control unit 65 (see FIG. 8) described later, thereby measuring the measurement unit for the eye E. 15 alignments are performed. For example, when the measurement unit 15 is moved to a position where the anterior segment image of the eye E can be acquired, and when the measurement unit 15 is switched to the left or right, the measurement unit 15 is moved. Coarse movement (high-speed movement) and fine movement (low-speed movement) when performing precise alignment in a narrow range, for example.

  In the ophthalmologic apparatus 10 according to the present embodiment, it is possible to select auto alignment that automatically performs alignment and manual alignment that performs alignment manually (manual operation).

  The electric drive unit 14 includes a Z-axis base 21, a Z-axis drive unit 22, an X-axis base 23, an X-axis drive unit 24, and a Y-axis drive unit 25.

  The Z-axis base 21 is provided above a later-described Z-axis drive unit 22 provided on the main body base 12, and is held by the Z-axis drive unit 22 so as to be movable in the Z-axis direction. Two pairs of bearings 27 arranged side by side in the Z-axis direction are provided on the lower surface of the Z-axis base 21 (see FIG. 2). The two pairs of bearings 27 are provided at an interval in the X-axis direction (see FIG. 2). The two pairs of bearings 27 are each formed with a through hole (not shown) parallel to the Z-axis direction.

  In addition, a housing 28 (corresponding to the first engagement portion of the present invention) is provided on the lower surface of the Z-axis base 21 so as to be positioned between the two pairs of bearings 27 in the X-axis direction ( (See FIG. 2). The housing 28 has a shape that engages with a nut 32 to be described later and can move integrally with the nut 32 in the Z-axis direction, for example, a shape that sandwiches the nut 32 in the Z-axis direction from above the nut 32. As the nut 32 moves in the Z-axis direction, the housing 28 is integrated with the measurement unit 15 via the Z-axis base 21, the X-axis drive unit 24, the X-axis base 23, and the Y-axis drive unit 25. Move in the direction.

  2 is a cross-sectional view (a top view of the Z-axis drive unit 22) taken along line 2-2 in FIG. As shown in FIGS. 1 and 2, the Z-axis drive unit 22 is provided on the main body base 12. The Z-axis drive unit 22 includes two Z guide shafts 30 parallel to the Z-axis direction, two pairs of shaft fixing units 31, a nut 32 (corresponding to the second engagement unit of the present invention), A feed screw 33 and a Z-axis motor 34 are provided.

  The two Z guide shafts 30 are respectively inserted through the through holes of the two pairs of bearings 27. Both end portions of each Z guide shaft 30 are held by two pairs of shaft fixing portions 31 provided on the upper surface of the main body base 12. Thus, the Z-axis base 21 is held movably in the Z-axis direction by the Z guide shaft 30 via the pair of bearings 27, that is, is held movably on the main body base 12 in the Z-axis direction.

  The nut 32 is engaged with the above-described housing 28, that is, sandwiched by the housing 28 from above in the Z-axis direction. At this time, the nut 32 is engaged with the housing 28 in a state in which the nut 32 cannot rotate relative to the housing 28 around the Z axis.

  The feed screw 33 penetrates the housing 28 described above in the Z-axis direction in a posture parallel to the Z-axis direction, and is screwed into a nut 32 engaged with the housing 28. A Z-axis motor 34 provided on the main body base 12 is connected to one end of the feed screw. The feed screw 33 constitutes a drive source of the present invention together with a Z-axis motor 34 described later.

  The Z-axis motor 34 rotationally drives the feed screw 33 under the control of a control unit 65 (see FIG. 8) described later. By rotating the feed screw 33, the housing 28 can be moved in the Z-axis direction via the nut 32, and further, the Z-axis base 21 can be moved in the Z-axis direction via the housing 28. As a result, the X-axis drive unit 24, the X-axis base 23, the Y-axis drive unit 25, and the measurement unit 15 provided on the Z-axis base 21 can be moved integrally in the Z-axis direction. That is, the measurement unit 15 and the like can be moved relative to the main body base 12 in the Z-axis direction. Further, by controlling the rotation direction of the feed screw 33 by the Z-axis motor 34, the movement direction in the Z-axis direction of the measurement unit 15 and the like can be controlled, and by controlling the rotation speed of the feed screw 33, the measurement unit 15 and the like can be controlled. The moving speed in the Z-axis direction can be controlled.

  The X-axis base 23 is provided above an X-axis drive unit 24 described later provided on the Z-axis base 21, and is held by the X-axis drive unit 24 so as to be movable in the X-axis direction. . On the lower surface of the X-axis base 23, two pairs of bearings 37 and a housing 38 (corresponding to the first engaging portion of the present invention) are provided. The pair of bearings 37 and the housing 38 have a structure (arrangement) in which the pair of bearings 27 and the housing 28 described above are rotated by 90 degrees around the Y axis. The housing 38 is engaged with a nut 42 described later, and the X-axis direction is integrated with the measurement unit 15 via the X-axis base 23 and the Y-axis drive unit 25 as the nut 42 moves in the X-axis direction. Move to.

  The X-axis drive unit 24 is provided on the Z-axis base 21. The X-axis drive unit 24 includes two X guide shafts 40 parallel to the X-axis direction, two pairs of shaft fixing portions 41, a nut 42, a feed screw 43, and an X-axis motor 44. Prepare. The nut 42 corresponds to the second engagement portion of the present invention, and the feed screw 43 and the X-axis motor 44 correspond to the drive source of the present invention.

  Each part of the X-axis drive unit 24 has a structure (arrangement) obtained by rotating each part of the Z-axis drive unit 22 described above by 90 degrees around the Y-axis. Therefore, the housing 38 and the X-axis base 23 are moved to the main body base 12 via the nut 42 by the X-axis motor 44 rotationally driving the feed screw 33 under the control of the control unit 65 (see FIG. 8) described later. On the other hand, it can be relatively moved in the X-axis direction. As a result, the Y-axis drive unit 25 and the measurement unit 15 provided on the X-axis base 23 can be moved integrally in the X-axis direction. Further, the X-axis motor 44 controls the rotational direction of the feed screw 43 to control the movement direction of the measurement unit 15 and the like in the X-axis direction, and the rotational speed of the feed screw 43 controls the measurement unit 15 and the like. The movement speed in the X-axis direction can be controlled.

  The Y-axis drive unit 25 includes a cylindrical housing 50, a support column 51, a nut 52, a feed screw 53, and a Y-axis motor 54. The cylindrical housing 50 has a cylindrical shape parallel to the Y-axis direction, and is fixed to the upper surface of the X-axis base 23. In this cylindrical housing 50, a support column 51 inserted into the inside through the opening on the upper end side is fitted.

  A feed screw 53 and a Y-axis motor 54 are housed in the cylindrical housing 50. Specifically, the Y-axis motor 54 is fixed on the X-axis base 23 in the cylindrical housing 50. Further, the lower end side of the feed screw 53 is connected to the Y-axis motor 54, and is held by the Y-axis motor 54 in a posture parallel to the Y-axis direction in the cylindrical housing 50.

  The support column 51 has a cylindrical shape parallel to the Y-axis direction, and is fitted into the cylindrical housing 50 from the lower end side. The measurement unit 15 is fixed to the upper end portion of the support column 51. An annular engagement groove 51 a with which the nut 52 engages along the circumferential direction is formed on the inner peripheral surface on the lower end side of the support column 51. The nut 52 is engaged with the engagement groove 51a in the support column 51 in a state in which the nut 52 cannot rotate relative to the Y axis, and moves together with the support column 51 in the Y axis direction.

  The feed screw 53 is fitted into the above-described support column 51 from below. The feed screw 53 is screwed into a nut 52 that is engaged with an engagement groove 51 a in the support column 51.

  The Y-axis motor 54 moves the column 51 in the Y-axis direction via the nut 52 by rotating the feed screw 53 under the control of a control unit 65 (see FIG. 8) described later. As a result, the measurement unit 15 can be moved in the Y-axis direction. Further, the Y-axis motor 54 controls the rotational direction of the feed screw 53 to control the movement direction of the measurement unit 15 in the Y-axis direction, and the rotational speed of the feed screw 53 to control the Y direction of the measurement unit 15. The moving speed in the axial direction can be controlled.

  Thus, by driving the Z-axis motor 34, the X-axis motor 44, and the Y-axis motor 54, the measurement unit 15 can be moved (coarse or finely moved) in the respective directions of the XYZ axes.

  The measurement unit 15 includes a measurement optical system 15a (including an image sensor and various light sources) corresponding to the types of eye characteristics measured by the ophthalmologic apparatus 10. The measurement unit 15 outputs a detection signal for alignment detection (an observation image of the anterior segment of the eye E) to the control unit 65 (see FIG. 8), which will be described later, at the time of alignment detection. During measurement, a measurement signal for measurement is output to the control unit 65. In addition, since it is a known technique about the structure of the measurement unit 15 and its measurement optical system 15a, concrete description is abbreviate | omitted here.

  The monitor 16 is attached to the end of the measurement unit 15 on the rear side (operator side) in the Z-axis direction. As the monitor 16, for example, a touch panel type liquid crystal display device is used. The monitor 16 relates to the measurement result of the eye characteristic of the eye E obtained by the measurement unit 15, the observation image of the anterior eye part of the eye E used for alignment of the measurement unit 15, and the measurement of the eye characteristic. An operation screen or the like for performing operations (including position adjustment of the measurement unit 15) is displayed.

  The operation lever 17 is attached to, for example, an end on the rear side in the Z-axis direction on the X-axis base 23. Note that a measurement button is provided on the top of the operation lever 17, and the measurement of the eye characteristics of the eye E can be started by pressing this measurement button.

  The operation lever 17 is an operation unit for manually moving the measurement unit 15 in the XYZ axis directions. For example, by rotating the operation lever 17 around its longitudinal axis (clockwise or counterclockwise), the above-described Y-axis motor 54 is driven and the measurement unit 15 moves in the Y-axis direction (vertical direction). To do. At this time, since the rotation direction of the feed screw 53 by the Y-axis motor 54 is switched by switching the rotation direction of the operation lever 17, the measurement unit 15 can be moved in the Y-axis direction as described above. Further, by adjusting the rotation angle of the operation lever 17, coarse movement and fine movement of the measurement unit 15 in the Y-axis direction can be switched. The rotation angle of the operation lever 17 is detected by, for example, a Y potentiometer 56Y (see FIG. 8) that is a rotary potentiometer.

  FIG. 3 is an explanatory diagram for explaining the movement operation of the measurement unit 15 in the Z-axis direction and the X-axis direction (horizontal direction) using the operation lever 17. In the present embodiment, the Z-axis direction and the X-axis direction correspond to the predetermined axial direction of the present invention. Further, in the present embodiment, the operation lever 17 is provided on the X-axis base 23, but it may be provided in another part in the ophthalmologic apparatus 10.

  As shown in FIG. 3, for the movement operation of the measurement unit 15 using the operation lever 17 in the Z-axis direction and the X-axis direction, a tilting operation (fine movement) when the measurement unit 15 is finely moved in the Z-axis direction and the X-axis direction is used. Operation) and a push-pull operation (also referred to as coarse movement operation) when the measurement unit 15 is coarsely moved in the Z-axis direction and the X-axis direction.

  As shown in the upper part of FIG. 3, the Z-axis motor 34 or the X-axis motor 44 described above is driven by tilting the operation lever 17 in the Z-axis direction or the X-axis direction, and the measurement unit 15 is Move (finely move) in the Z-axis direction or X-axis direction. At this time, since the Z-axis motor 34 or the X-axis motor 44 is driven at a lower speed than during the push-pull operation described later, the measurement unit 15 moves in the Z-axis direction or the X-axis direction at a lower speed than during the push-pull operation. That is, it moves slightly.

  Note that the moving speed of the measurement unit 15 can be adjusted by adjusting the tilt angle when the operation lever 17 is tilted. The tilt direction and tilt angle of the operation lever 17 are detected by, for example, a Z potentiometer 56Z and an X potentiometer 56X (see FIG. 8), which are direct acting potentiometers.

  As shown in the lower part of FIG. 3, when a push-pull operation (horizontal movement operation) is performed to push or pull the operation lever 17 in the Z-axis direction or the X-axis direction without tilting the operation lever 17, the operation lever 17, the X-axis base 23 is pressed in the Z-axis direction or the X-axis direction.

  For example, when the X-axis base 23 is pressed in the Z-axis direction, a nut 32 that is a member that moves in the Z-axis direction and a housing 28 that is a member that engages with the nut 32 and moves in the Z-axis direction. The pressure in the Z-axis direction changes between the two. Further, for example, when the X-axis base 23 is pressed in the X-axis direction, a nut 42 that is a member that moves in the X-axis direction and a housing 38 that is a member that engages with the nut 42 and moves along the X-axis direction. The pressure in the X-axis direction changes between

  Therefore, in the present embodiment, based on the change in the pressure in the Z-axis direction or the change in the pressure in the X-axis direction, the Z-axis motor 34 or the X-axis motor 44 described above is driven to move the measurement unit 15 in the Z-axis direction or the X-axis direction. Move in the axial direction (coarse movement). At this time, since the Z-axis motor 34 or the X-axis motor 44 is driven at a higher speed than during the tilting operation described above, the measurement unit 15 moves in the Z-axis direction or the X-axis direction at a higher speed than during the tilting operation. Coarse.

  The push-pull operation for generating such a change in pressure in the Z-axis direction and the X-axis direction is not limited to the push-pull operation on the operation lever 17 in the Z-axis direction and the X-axis direction.

  FIG. 4 is an explanatory diagram for explaining the types of push-pull operations in the Z-axis direction. FIG. 5 is an explanatory diagram for explaining the types of push-pull operations in the X-axis direction. 4 and 5, the Z-axis drive unit 22 and the X-axis drive unit 24 are simplified in order to prevent complication of the drawings.

  As shown in FIG. 4, the Z-axis direction push-pull operation is performed on the measurement unit 15 (including the monitor 16) in addition to the Z-axis direction push-pull operation on the operation lever 17 described above (see arrow PZ1). Push-pull operation in the Z-axis direction (see arrow PZ2), push-pull operation in the Z-axis direction with respect to at least one of the Z-axis base 21 and the X-axis base 23 (see arrow PZ3), and Z-axis direction with respect to the Y-axis drive unit 25 A push-pull operation (see arrow PZ4) and the like are included. A plurality of these push / pull operations may be combined. By the pushing and pulling operation in the Z-axis direction with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17, a change in the pressure in the Z-axis direction described above is generated.

  As shown in FIG. 5, as the push-pull operation in the X-axis direction, in addition to the push-pull operation in the X-axis direction with respect to the operation lever 17 (see arrow PX1), the push in the X-axis direction with respect to the measurement unit 15 and the like. A pulling operation (see arrow PX2), a push-pull operation in the X-axis direction with respect to the X-axis base 23 (see arrow PX3), a push-pull operation in the X-axis direction with respect to the Y-axis drive unit 25 (see arrow PX4), and the like are included. A plurality of these push / pull operations may be combined. Such a push-pull operation in the X-axis direction with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17 causes a change in the pressure in the X-axis direction described above.

  FIG. 6 is a side view of the Z-axis pressure sensor 60 that detects a change in pressure in the Z-axis direction accompanying a push-pull operation in the Z-axis direction. As shown in FIG. 6, a Z-axis pressure sensor corresponding to a push-pull operation detection unit of the present invention is provided between opposing surfaces 28 a and 32 a facing each other in the Z-axis direction of both the housing 28 and the nut 32 described above. 60 is provided.

  The Z-axis pressure sensor 60 is connected to each of the facing surfaces 28a and 32a. For this reason, when a push-pull operation in the Z-axis direction is performed, the Z-axis pressure sensor 60 detects a pressure (change in pressure) in the Z-axis direction accompanying the push-pull operation.

  FIG. 7 is an explanatory diagram for explaining detection of pressure in the Z-axis direction by the Z-axis pressure sensor 60 when a push-pull operation in the Z-axis direction is performed. As shown in the upper part of FIG. 7, when a push-pull operation (see arrows PZ1 to PZ4) is performed toward the front side in the Z-axis direction indicated by Z (+), as indicated by arrows A1 and H1, the Z-axis Pressure toward the front side in the Z-axis direction is applied to the base 21 and the housing 28. At this time, the movement of the nut 32 in the Z-axis direction is restricted by the feed screw 33, so that the facing surface 28a of the housing 28 moves the Z-axis pressure sensor 60 to the facing surface 32a of the nut 32 as indicated by the arrow F1. Press towards. As a result, the Z-axis pressure sensor 60 is compressed between the opposing surfaces 28 a and 32 a of both the housing 28 and the nut 32, and a positive (+) pressure is detected by the Z-axis pressure sensor 60.

  As shown in the lower part of FIG. 7, when a push-pull operation (see arrows PZ1 to PZ4) is performed toward the Z-axis direction rear side indicated by Z (−), as indicated by arrows A2 and H2, the Z-axis Pressure toward the rear side in the Z-axis direction is applied to the base 21 and the housing 28. Also in this case, since the nut 32 is restricted from moving in the Z-axis direction by the feed screw 33, the opposing surface 28a of the housing 28 is connected to the Z-axis pressure sensor 60 and the opposing surface 32a of the nut 32 as shown by the arrow F2. Pull away from the camera. As a result, the Z-axis pressure sensor 60 extends between the opposing surfaces 28 a and 32 a of both the housing 28 and the nut 32, and a negative (−) pressure is detected by the Z-axis pressure sensor 60. Accordingly, the Z-axis pressure sensor 60 can detect the operation direction in the Z-axis direction of the push-pull operation (the front side or the rear side in the Z-axis direction) and the magnitude of the pressure of the push-pull operation.

  Specifically, the operation direction in the Z-axis direction of the push-pull operation can be detected according to the positive / negative of the pressure detected by the Z-axis pressure sensor 60, and based on the absolute value of the pressure detected by the Z-axis pressure sensor 60. It is possible to detect the magnitude of the pressure in the Z-axis direction push-pull operation.

  Therefore, when a positive pressure is detected by the Z-axis pressure sensor 60, the measuring unit 15 is moved by rotating the feed screw 33 in one direction by the Z-axis motor 34 as indicated by an arrow R1 in the figure. It moves (coarse movement) toward the front side in the Z-axis direction at a speed corresponding to the absolute value of this positive pressure. Further, when a negative pressure is detected by the Z-axis pressure sensor 60, the measuring unit 15 is driven by rotating the feed screw 33 in the other direction by the Z-axis motor 34 as indicated by an arrow R2 in the figure. It is moved toward the rear side in the Z-axis direction at a speed corresponding to the absolute value of this negative pressure.

  Although not shown in the drawings, a portion between the opposing surfaces (not shown) of the housing 38 and the nut 42 facing each other in the X-axis direction shown in FIG. An X-axis pressure sensor 61 (see FIG. 8) is provided. As a result, the operation direction in the X-axis direction of the push-pull operation (left side or right side in the X-axis direction) can be detected according to the positive or negative pressure detected by the X-axis pressure sensor 61. Further, based on the absolute value of the pressure detected by the X-axis pressure sensor 61, the magnitude of the pressure in the push-pull operation in the X-axis direction can be detected.

  Therefore, when a positive pressure is detected by the X-axis pressure sensor 61 (see FIG. 8), the X-axis motor 44 rotates the feed screw 43 in one direction to move the measurement unit 15 in the X-axis direction ( It moves (coarsely move) toward one side of (left and right) at a speed corresponding to the absolute value of this positive pressure. When a negative pressure is detected by the X-axis pressure sensor 61, the measuring unit 15 is directed to the other side in the X-axis direction by rotating the feed screw 43 in the other direction by the X-axis motor 44. And move at a speed corresponding to the absolute value of this negative pressure.

  As such Z-axis pressure sensor 60 and X-axis pressure sensor 61, highly sensitive and highly accurate sensors are used in this embodiment. Specifically, as a push / pull operation in the directions of the arrows PZ1 to PZ4 and PX1 to PX4 shown in FIGS. 4 and 5, for example, when a touch operation or the like (including a tap operation and a contact operation) is performed, Each pressure sensor 60, 61 capable of detecting a slight change in pressure accompanying this touch operation or the like is used. That is, the push-pull operation of this embodiment includes an electric drive unit 14 such as the touch operation described above, a measurement unit 15 (including the monitor 16), and an operation that gives a slight change in pressure.

  Accordingly, for example, one or more touch operations or a long press operation (a touch operation that continues for a certain period of time) is performed on at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. When the specific operation pattern is performed, the pressure sensor 60 and 61 can detect the push / pull operation of the specific operation pattern. Therefore, in the present embodiment, when the push-pull operation is executed with a plurality of types of specific operation patterns that are determined in advance, the specific control is the movement control of the measurement unit 15 that is associated with each specific operation pattern in advance. Execute movement control. Although the specific movement control will be described in detail later, examples include auto-alignment, stop of auto-alignment, and left-right switching movement of the eye E to be examined.

  In FIGS. 6 and 7 described above, the Z-axis pressure sensor is inserted in the gap formed between the housing 28 and the nut 32 on the rear side in the Z-axis direction formed by the opposing surfaces 28a and 32a. 60 is provided, but the Z-axis pressure sensor 60 may be provided in a gap on the front side in the Z-axis direction, or in a gap on both the front side and the rear side in the Z-axis direction. That is, the position of the Z-axis pressure sensor 60 is not particularly limited as long as it is a position where a push-pull operation in the Z-axis direction can be detected (a position compressed or extended by the push-pull operation). Similarly, the position of the X-axis pressure sensor 61 (see FIG. 8) is not particularly limited as long as it can detect a push-pull operation in the X-axis direction.

  FIG. 8 is a block diagram showing an electrical configuration of the control unit 65 provided in the ophthalmologic apparatus 10. As shown in FIG. 8, the control unit 65 is an arithmetic circuit including various arithmetic units including, for example, a CPU (Central Processing Unit) or an FPGA (field-programmable gate array), a memory, and the like. Centrally controls the operation of each part. For example, the control unit 65 obtains and outputs the detection signal for the alignment detection described above and obtains and outputs the measurement signal for the eye characteristic of the eye E according to the touch operation of the monitor 16 or the operation of the operation lever 17. To the measurement unit 15.

  The control unit 65 functions as an arithmetic processing unit 67 and a movement control unit 68 by executing a control program (not shown) read from the storage unit 66.

  The arithmetic processing unit 67 functions as the alignment detection unit 70 and the analysis unit 71. The alignment detection unit 70 performs alignment detection in each of the XYZ axes of the measurement unit 15 with respect to the eye E based on an alignment detection detection signal input from the measurement unit 15 in an auto alignment mode described later. Then, alignment detection unit 70 outputs the alignment detection result to movement control unit 68.

  The analysis unit 71 analyzes an eye characteristic measurement signal of the eye E input from the measurement unit 15 and obtains an eye characteristic measurement result. Then, the analysis unit 71 outputs the measurement result of the eye characteristic of the eye E to the monitor 16 and the storage unit 66. Thereby, the measurement result of the eye characteristic of the eye E is displayed on the monitor 16 and stored in the storage unit 66.

  The movement control unit 68 controls the driving of the Z-axis motor 34, the X-axis motor 44, and the Y-axis motor 54, and moves or stops the movement of the measurement unit 15 in the respective XYZ axis directions. Thereby, the movement control unit 68 executes various movements of the measurement unit 15 including alignment (automatic alignment or manual alignment) of the measurement unit 15 with respect to the eye E, stop of the automatic alignment, left-right switching movement of the eye E, and the like. To do. The movement control unit 68 detects the position of the measurement unit 15 in the X-axis direction in addition to the motors 34, 44, 54, the potentiometers 56X, 56Y, 56Z and the pressure sensors 60, 61 described above. An X-axis position detection sensor 73, a Y-axis position detection sensor 74 that detects a position in the Y-axis direction, and a Z-axis position detection sensor 75 that detects a position in the Z-axis direction are connected.

  The movement control unit 68 has an auto alignment mode and a manual alignment mode as operation modes for performing alignment of the measurement unit 15 with respect to the eye E. Switching between the auto alignment mode and the manual alignment mode is performed by a touch operation on an operation screen displayed on the monitor 16, for example. The manual alignment mode is a mode that takes into consideration a case where auto-alignment cannot be performed in particular, for example, when the cornea or iris of the eye E is abnormal or nystagmus is large.

  When the auto-alignment mode is set, the movement control unit 68 is based on the alignment detection result input from the above-described alignment detection unit 70 and the detection results of the position detection sensors 73, 74, 75. The drive of 34,44,54 is controlled and the position adjustment of each XYZ axis direction of the measurement unit 15 is performed. Thereby, the automatic alignment of the measurement unit 15 with respect to the eye E is performed.

  On the other hand, when the manual alignment mode is selected, the movement control unit 68 is based on a signal input from any one of the potentiometers 56X, 56Y, and 56Z when the operation lever 17 is tilted and rotated. Then, fine movement control for controlling driving of each of the motors 34, 44, 54 is performed. As a result, the measurement unit 15 finely moves (moves at a low speed) according to the direction and speed corresponding to the tilting operation or the rotation operation.

  Further, when the manual alignment mode is selected, the movement control unit 68 performs each pressure operation when a push-pull operation in the Z-axis direction or the X-axis direction as shown in FIGS. 4 and 5 is performed. Based on the positive / negative and absolute values of the pressure detected by either of the sensors 60, 61, coarse motion control is started to control the driving of each of the motors 34, 44. This coarse motion control corresponds to the operation movement control of the present invention.

  FIG. 9 is an explanatory diagram for explaining coarse movement control of the measurement unit 15 in the Z-axis direction and the X-axis direction by the movement control unit 68. FIG. 10 is a graph showing an example of a pressure change indicating a relationship between pressure and time detected by the Z-axis pressure sensor 60 and the X-axis pressure sensor 61 during coarse motion control. As shown in FIG. 9 and FIG. 10, the movement control unit 68 has an absolute value of the absolute value of the pressure detected by any one of the pressure sensors 60 and 61 in the manual alignment mode with a predetermined threshold value ± VL. If it is less than the value (corresponding to less than the threshold of the present invention), the driving of the motors 34 and 44 is stopped. That is, in the pressure range in which the magnitude of the absolute value of each pressure sensor 60, 61 is less than the absolute value of the threshold value ± VL, the measurement unit 15 does not perform coarse movement in the Z-axis direction and the X-axis direction in the manual alignment mode. It becomes a dead zone.

  On the other hand, when the magnitude of the absolute value of the pressure detected by any of the pressure sensors 60 and 61 is equal to or greater than the absolute value of the threshold ± VL (corresponding to the threshold of the present invention), the movement control unit 68 The operation direction in the Z-axis direction or the X-axis direction of the push / pull operation is determined according to the positive / negative pressure. Further, the movement control unit 68 determines the magnitude of the moving speed of the measuring unit 15 (hereinafter simply referred to as the moving speed) according to the magnitude of the detected absolute value of the pressure. At this time, if the magnitude of the absolute value of the pressure becomes larger than the absolute value of the predetermined threshold value ± VU, the movement control unit 68 sets the movement speed to a constant speed without further increasing the movement speed. Then, the movement control unit 68 drives one of the motors 34 and 44 according to the determined operation direction and movement speed. Thereby, in the manual alignment mode, the measurement unit 15 moves roughly according to the direction and speed corresponding to the push-pull operation.

  Here, the range of the dead zone described above is set to a range including pressures (absolute values) detected by the pressure sensors 60 and 61 when the operation lever 17 is tilted in the manual alignment mode. ing. Thus, when the operation lever 17 is tilted in the manual alignment mode, the coarse movement control of the measurement unit 15 by the movement control unit 68 is stopped, so that the coarse movement of the measurement unit 15 is erroneously executed. Is prevented. Conversely, when the absolute value of the pressure detected by each of the pressure sensors 60 and 61 is equal to or greater than the absolute value of the threshold value ± VL, the fine movement control of the measurement unit 15 by the movement control unit 68 is stopped, so that the measurement is performed. The driving of the motors 34 and 44 according to the tilting operation of the unit 15 is stopped.

  In this way, the movement control unit 68 performs the movement (coarse movement) of the measurement unit 15 according to the push-pull operation in the manual alignment mode and the movement (fine movement) of the measurement unit 15 according to the tilting operation of the operation lever 17. While one of the movements is being performed, the other movement is stopped.

<Specific movement control of measurement unit>
Returning to FIG. 8, the movement control unit 68 changes the pressure change, which is the time change of the pressure detected by the pressure sensors 60 and 61, during the execution of the auto alignment mode and when the measurement unit 15 is stopped. Based on this, a push-pull operation such as a touch operation performed by the operator on at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17 is monitored. When the push-pull operation is performed, the change pattern of the pressure detected by each of the pressure sensors 60 and 61 also changes according to the operation pattern of the push-pull operation (double touch operation, long press operation, etc.). That is, the operation pattern of the push-pull operation is defined by the pressure change pattern detected by the pressure sensors 60 and 61.

  Accordingly, when the pressure change is detected by the pressure sensors 60 and 61, the movement control unit 68 determines in advance the push-pull operation corresponding to the pressure change pattern among the various operation patterns of the push-pull operation. It is determined whether or not any of the plurality of specific operation patterns is matched.

  Then, the movement control unit 68 determines that the push / pull operation corresponding to the pressure change pattern does not match any of the plurality of specific operation patterns, and the pressure sensors 60 and 61 detect this push / pull operation. If the magnitude of the absolute value of the applied pressure is equal to or greater than the absolute value of the aforementioned threshold value ± VL, coarse motion control similar to that in the aforementioned manual alignment mode is executed. When the movement control unit 68 determines that there is a mismatch and the magnitude of the absolute value of the pressure detected by the pressure sensors 60 and 61 by the push-pull operation is less than the absolute value of the threshold value ± VL. It will be in a standby state.

  On the other hand, when the movement control unit 68 determines that the push-pull operation matches one of the plurality of specific operation patterns, the movement control unit 68 performs movement control of the measurement unit 15 associated in advance with the specific operation pattern that matches. As the specific movement control, for example, any one of auto alignment, emergency stop of auto alignment, and left / right switching movement of the eye E is performed. Specifically, the movement control unit 68 refers to the correspondence relationship information 79 stored in advance in the storage unit 66, and determines whether or not the push-pull operation matches any of a plurality of specific operation patterns. The specific movement control corresponding to the matched specific operation pattern is determined and executed.

  FIG. 11 is an explanatory diagram showing an example of the correspondence information 79. As shown in FIG. 11, the correspondence information 79 includes a pressure sensor that detects a pressure change associated with a push-pull operation among the pressure sensors 60 and 61, a plurality of specific operation patterns of the push-pull operation, This is information that stores the correspondence with the specific movement control of the measurement unit 15 defined for each specific operation pattern.

  The correspondence relation information 79 includes a specific movement executed when the push-pull operation corresponding to the pressure change pattern detected by the Z-axis pressure sensor 60 matches a specific operation pattern “one-time touch operation”. “Alignment control” is stored as control. Further, in the correspondence information 79, when the push-pull operation corresponding to the pressure change pattern detected by any of the pressure sensors 60 and 61 matches the “two-touch operation” which is a specific operation pattern. "First alignment stop control" is stored as the specific movement control executed in the "3", and "second alignment stop control" is stored as the specific movement control executed when the "three times touch operation" is matched. .

  Furthermore, the correspondence relation information 79 is executed when the push-pull operation corresponding to the pressure change pattern detected by the X-axis pressure sensor 61 matches the “long press operation” that is a specific operation pattern. As the specific movement control, two types of “left / right switching movement control” are stored in accordance with the positive / negative pressure.

  FIG. 12 is an explanatory diagram showing the relationship between each specific operation pattern stored in the correspondence information 79 and the pressure change pattern detected by each pressure sensor 60, 61. As shown in FIG. 12, the symbol G <b> 1 corresponds to a “single touch operation”, that is, a single touch operation in the Z-axis direction with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. An example of the change pattern of the pressure detected by the Z-axis pressure sensor 60 is shown.

  Reference symbol G2 indicates a “two-touch operation”, that is, a Z-axis pressure sensor in response to two touch operations in the Z-axis direction or the X-axis direction with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. An example of a pressure change pattern detected by 60 or the X-axis pressure sensor 61 is shown. The symbol G3 indicates a “three-touch operation”, that is, a Z-axis corresponding to three touch operations in the Z-axis direction or the X-axis direction with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. An example of the pressure change pattern detected by the pressure sensor 60 or the X-axis pressure sensor 61 is shown.

  Reference numeral G4 indicates a “long press operation”, that is, a pressure detected by the X-axis pressure sensor 61 in response to a long press operation in the X-axis direction with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. It is an example of a change pattern. Here, for example, when a long press operation is performed toward the left side in the X-axis direction when viewed from the operator side, a positive (+) pressure change pattern (indicated by a solid line) is detected by the X-axis pressure sensor 61. . For example, when a long press operation is performed toward the right side in the X-axis direction when viewed from the operator side, a negative (−) pressure change pattern (indicated by a dotted line) is detected by the X-axis pressure sensor 61.

  Each specific operation pattern is defined by a pressure change pattern (time change pattern) within a range less than the absolute value of the above-described predetermined threshold value ± VL. In other words, each specific operation pattern is a pressure change pattern within a dead zone in which coarse movement (coarse movement control) in the Z-axis direction and X-axis direction of the measurement unit 15 shown in FIG. 9 is not performed. It is prescribed by.

  Thus, the magnitude of the pressure of the push-pull operation when performing the coarse movement control of the measurement unit 15 is different from the magnitude of the pressure of the push-pull operation when performing the specific movement control of the measurement unit 15. Therefore, when the operator performs a push-pull operation on at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17, the coarse movement control of the measurement unit 15 and the specific movement control of the measurement unit 15 are performed. Are prevented from occurring simultaneously. Therefore, the operator performs a push / pull operation with a strong force when performing coarse movement control of the measurement unit 15, and a push / pull operation with a weak force such as a touch operation when performing specific movement control of the measurement unit 15. I do. Thus, the operator can intuitively select between the coarse movement control and the specific movement control of the measurement unit 15 by increasing or decreasing the force of the push-pull operation.

  Note that the movement control unit 68 stops the specific movement control of the measurement unit 15 when the tilting or rotation of the operation lever 17 is detected by the potentiometers 56X, 56Y, 56Z. This prevents accidental execution of the specific movement control of the measurement unit 15 unintended by the operator due to a slight change in pressure caused by the tilting operation of the operation lever 17 or the like.

  FIG. 13 is an explanatory diagram for explaining “alignment control” and “first alignment stop control” which are specific movement controls.

  As indicated by reference numeral C1 in FIG. 13, the “alignment control” is a movement control for moving the measurement unit 15 to a measurement position where the eye characteristic of the eye E is measured, that is, automatic alignment of the measurement unit 15 with respect to the eye E. This is the control to be executed. For this reason, when executing the “alignment control” as the specific movement control, the movement control unit 68 controls the driving of the motors 34, 44, 54 based on the alignment detection result by the alignment detection unit 70 described above, Perform auto alignment.

  When auto-alignment is performed, the measurement is performed by the height position in the Y-axis direction of the chin rest and the forehead support of the face support portion 13 and manual operations (the push-pull operation, the tilt operation, and the rotation operation described above). By adjusting the position of the unit 15 or the like, the measurement unit 15 obtains an observation image of the anterior segment of the eye E, that is, a state where the observation image is displayed on the monitor 16.

  As shown by reference numerals C2 and C3 in FIG. 13, the “first alignment stop control” corresponds to the first movement control of the present invention, and moves the measurement unit 15 to the emergency stop and to the rear side in the Z-axis direction. It is movement control. When executing the “first alignment stop control” as the specific movement control, the movement control unit 68 controls the driving of the motors 34, 44, and 54 to stop the movement of the measurement unit 15. Next, the movement control unit 68 controls driving of the Z-axis motor 34 to move (retract) the measurement unit 15 rearward in the Z-axis direction, and then stops the movement of the measurement unit 15.

  The “first alignment stop control” is performed when the auto alignment mode is urgently stopped while the auto alignment mode is being executed and the measurement unit 15 is moving forward in the Z-axis direction toward the eye E. Is suitable. In this case, by executing the “first alignment stop control”, the movement stop of the measurement unit 15 to the front side in the Z-axis direction, the movement of the measurement unit 15 to the rear side in the Z-axis direction (retraction), and the measurement unit Since the movement of 15 is stopped, the safety of the subject (eye E) can be further improved.

  The “second alignment stop control” corresponds to the second movement control of the present invention, and is a movement control that makes the measurement unit 15 stop at an emergency position. When executing the “second alignment stop control” as the specific movement control, the movement control unit 68 controls the driving of the motors 34, 44, and 54 to stop the measurement unit 15 at the current position.

  The “second alignment stop control” is suitable for an emergency stop of the auto alignment mode while the auto alignment mode is being executed and the measurement unit 15 is moving in a direction other than the front side in the Z-axis direction. Yes. In this case, since it is not necessary to move (retreat) the measurement unit 15 to the rear side in the Z-axis direction, only the movement of the measurement unit 15 can be stopped by executing the “second alignment stop control”. .

  FIG. 14 is an explanatory diagram for explaining the “left / right switching movement control” which is the specific movement control. As shown in FIG. 14, “left / right switching movement control” corresponds to the third movement control of the present invention, and the measurement unit 15 measures the eye characteristic of the right eye of both eyes of the eye E to be examined. This is movement control for moving from one of the right eye measurement position and the left eye measurement position for measuring the eye characteristics of the left eye toward the other. The right-eye measurement position and the left-eye measurement position can be detected in the X-axis direction, that is, the alignment can be detected, by the measurement unit 15 to obtain an observed image of the anterior eye portion of the corresponding eye E (right eye or left eye). Position. In the present embodiment, description will be made assuming that the right eye measurement position and the left eye measurement position are fixed positions.

  The movement control unit 68 drives the X-axis motor 44 when performing the “left / right switching movement control” corresponding to the positive pressure change pattern indicated by the symbol G4 in FIG. 12 as the specific movement control. By controlling, the measurement unit 15 is moved to the left side in the X-axis direction as viewed from the operator side (right side in the X-axis direction as viewed from the subject side). Thereby, the measurement unit 15 can be moved to the right eye measurement position. Further, when executing the “left / right switching movement control” corresponding to the negative pressure change pattern indicated by the symbol G4 as the specific movement control, the movement control unit 68 controls the driving of the X-axis motor 44 to perform measurement. The unit 15 is moved to the right side in the X axis direction when viewed from the operator side (left side in the X axis direction when viewed from the subject side). Thereby, the measurement unit 15 can be moved to the left eye measurement position.

[Movement control of the measurement unit by the movement controller]
FIG. 15 shows a flow of movement control of the measurement unit 15 executed by the movement control unit 68 in response to a push-pull operation on at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17 (of the ophthalmologic apparatus of the present invention). It is a flowchart which shows an operation method. In order to prevent the explanation from becoming complicated, the description of the fine movement control of the measurement unit 15 according to the tilting operation of the operation lever 17 which is a known technique is omitted.

  The operator performs push-pull operation for coarse movement control of the measurement unit 15 or specific movement control of the measurement unit 15 with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. A push-pull operation is performed (YES in step S1).

  At this time, each of the pressure sensors 60 and 61 constantly detects the pressure, and outputs the pressure detection result to the movement control unit 68. When the push / pull operation is performed by the operator, the pressure detected by either of the pressure sensors 60 and 61 changes, and the detection result of this pressure (pressure change) is output to the movement control unit 68. (Step S2, corresponding to the detection step of the present invention).

  When the magnitude of the absolute value of the pressure detected by either of the pressure sensors 60 and 61 is equal to or larger than the absolute value of the threshold value ± VL shown in FIGS. (NO in S3), coarse control of the measurement unit 15 is started (step S4).

  First, the movement control unit 68 determines the operation direction in the Z-axis direction or the X-axis direction of the push-pull operation according to the positive / negative of the pressure detected by either of the pressure sensors 60 and 61, and the absolute value of this pressure. The moving speed of the measurement unit 15 is determined according to the magnitude of the value (step S5). Next, the movement control unit 68 drives one of the motors 34 and 44 according to the determined operation direction and movement speed, thereby roughly moving the measurement unit 15 according to the direction and speed corresponding to the push-pull operation (step). S6).

  Conversely, when the magnitude of the absolute value of the pressure detected by either of the pressure sensors 60 and 61 is less than the absolute value of the threshold value ± VL (YES in step S3), the movement control unit 68 determines whether the measurement unit 15 After the coarse motion control is stopped (step S7), the correspondence information 79 in the storage unit 66 is acquired. The movement control unit 68 refers to the correspondence information 79 and stores the push-pull operation corresponding to the pressure change pattern detected by either of the pressure sensors 60 and 61 in the correspondence information 79. Compare with each specific operation pattern. Then, the movement control unit 68 determines whether or not the push / pull operation matches any one of the specific operation patterns in the correspondence information 79 (steps S8 and S9).

  If the movement control unit 68 determines that the push / pull operation does not match any of the specific operation patterns stored in the correspondence information 79, the movement control unit 68 sets the movement control of the measurement unit 15 to the standby state ( NO in step S9, step S10).

  On the other hand, when the movement control unit 68 determines that the push-pull operation corresponding to the detected pressure change matches one of the specific operation patterns stored in the correspondence relationship information 79, the correspondence relationship information 79 is displayed. The specific movement control of the measurement unit 15 corresponding to the specific operation pattern that is matched by reference is determined (YES in step S9, step S11). Next, the movement control unit 68 specifies at least one of the motors 34, 44, 54 according to the determined specific movement control, thereby specifying the measurement unit 15 as shown in FIGS. 13 and 14 described above. The movement control is executed (step S12, corresponding to the movement control process of the present invention).

[Operation of ophthalmic apparatus]
FIG. 16 is a flowchart showing a flow of eye characteristic measurement by the ophthalmologic apparatus 10 having the above configuration. Here, the case where the auto alignment mode is set will be described.

  As shown in FIG. 16, when the auto alignment mode is set (step S <b> 21), the operator adjusts the height position in the Y-axis direction of the chin rest and the forehead support of the face support portion 13 and the measurement unit 15. The movement operation in the Y-axis direction is performed to adjust the height position in the Y-axis direction between the measurement unit 15 and the subject's face.

  Next, the operator performs push-pull operations in the Z-axis direction and the X-axis direction with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17 with a force equal to or greater than the absolute value of the above-described threshold value ± VL. I do. By this operation, coarse movement control of the measurement unit 15 by the movement control unit 68 is executed, and the measurement unit 15 moves in the Z-axis direction and the X-axis direction to the position where the anterior eye image of the eye E can be acquired (coarse movement). Is done. Thereby, the position adjustment of the measurement unit 15 before the alignment detection is completed.

  After this position adjustment, a detection signal for alignment detection is input from the measurement unit 15 to the alignment detection unit 70. In response to the input of this detection signal, the alignment detection unit 70 detects the alignment of the measurement unit 15 in the three XYZ directions with respect to the eye E, and outputs the alignment detection result to the movement control unit 68 (step S22). .

  When the operator performs a “single touch operation” in the Z-axis direction, which is a push-pull operation, on at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17 (step S23), the movement is performed. The control unit 68 executes “alignment control” in accordance with the processes shown in FIG. Thereby, the movement control unit 68 drives the motors 34, 44, and 54 based on the alignment detection result input from the alignment detection unit 70, and starts auto-alignment (step S24).

  After the start of auto-alignment, when the operator needs to stop auto-alignment urgently, the Z-axis direction is a push-pull operation on at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. Alternatively, either “twice touch operation” or “three touch operation” in the X-axis direction is performed (YES in step S25, step S26). In response to this operation, the movement control unit 68 executes “first alignment control” or “second alignment control” according to the movement direction of the measurement unit 15 in accordance with the processes shown in FIG. Thereby, the movement control part 68 controls the drive of each motor 34,44,54, and stops an auto alignment urgently (step S27).

  Next, the movement control unit 68 switches to the manual alignment mode (step S28). In this case, the operator performs a manual movement operation, that is, a push-pull operation with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17, a tilt operation with respect to the operation lever 17, and the like. Thereby, the coarse movement of the measurement unit 15 according to the push-pull operation and the fine movement of the measurement unit 15 according to the tilting operation or the like are executed, and the measurement unit 15 is manually aligned with respect to the eye E.

  On the other hand, after the automatic alignment is started, if the emergency stop of the automatic alignment, that is, the “two touch operation” or the “three touch operation” is not performed, the auto alignment of the measurement unit 15 with respect to the eye E is completed (step NO in S25, YES in step S29).

  When the automatic alignment or the manual alignment is completed, the measurement of the eye characteristic of the eye E by the measurement unit 15 and the analysis by the analysis unit 71 are executed, and the measurement result of the eye characteristic of the eye E is obtained (step S30). The measurement result of the eye characteristic of the eye E is displayed on the monitor 16 and stored in the storage unit 66.

  When performing left-right switching of the eye E to be measured for eye characteristics, the operator can perform a push-pull operation on the right side in the X-axis direction or at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. A “long press operation” on the left side in the X-axis direction is performed (YES in step S31, step S32). As a result, the movement control unit 68 executes “left / right switching movement control” corresponding to any of the “long press operations” in accordance with the processing shown in FIG. 15 described above. Then, the movement control unit 68 drives the X-axis motor 44 to move the measurement unit 15 from one of the right eye measurement position and the left eye measurement position toward the other (step S33).

  Thereafter, the processing from step S22 to step S30 is repeatedly executed, and the examination of the eye characteristics of the subject's eye E (both eyes) is completed (NO in step S31).

[Effect of this embodiment]
As described above, in the ophthalmologic apparatus 10 according to the present embodiment, a push-pull operation such as a touch operation is performed with respect to at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17 with a predetermined specific operation pattern. Thus, the specific movement control of the measurement unit 15 corresponding to this specific operation pattern can be automatically executed. Further, the type of specific movement control executed by the movement control unit 68 can be changed by changing the type of a specific operation pattern of the push-pull operation. For this reason, the operator pushes and pulls at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17 without touching the operation screen (icon or the like) on the screen of the monitor 16. The specific movement control of the desired measurement unit 15 can be executed only by performing it. Thereby, the operator can intuitively perform the operation related to the specific movement control of the measurement unit 15.

  Further, in the ophthalmologic apparatus 10 of the present embodiment, as shown in FIG. 12 described above, a specific operation pattern is defined by a pressure change pattern within a range less than the absolute value of the threshold value ± VL, and a push-pull operation is performed. If the absolute value of the detected pressure is less than the absolute value of the threshold value ± VL, the coarse motion control of the measurement unit 15 is stopped. This reliably prevents erroneous execution of coarse movement control of the measurement unit 15 unintended by the operator when the specific movement control of the measurement unit 15 is performed.

[Others]
In the above embodiment, the push-pull operation is performed on at least one of the electric drive unit 14, the measurement unit 15 (including the monitor 16), and the operation lever 17, but the target of the push-pull operation is limited to these. Not. For example, in the ophthalmologic apparatus 10, when at least one of the electric drive unit 14 and the measurement unit 15 is housed in a housing (cover), a push / pull operation may be performed on the housing. Even in this case, since at least one of the electric drive unit 14 and the measurement unit 15 is indirectly pushed and pulled through the housing, the Z-axis pressure sensor 60 and the X-axis pressure sensor 61 are accompanied by the push-pull operation. The change in pressure described above can be detected.

  In the first embodiment, the Z-axis pressure sensor 60 and the X-axis pressure sensor 61 are used to detect the push-pull operation in the Z-axis direction and the X-axis direction with respect to the measurement unit 15. You may detect using the method of.

  FIG. 17 is an explanatory diagram for explaining detection of push-pull operations in the Z-axis direction and the X-axis direction according to another configuration. As shown in FIG. 17, instead of providing the Z-axis pressure sensor 60, the distance D between the opposing surfaces 28a, 32a is measured on one or both of the opposing surfaces 28a, 32a of both the housing 28 and the nut 32. A distance measuring sensor 80 (push / pull operation detecting unit of the present invention) may be provided.

  When the push / pull operation in the Z-axis direction (see the arrows PZ1 to PZ4 in FIG. 4 described above) is performed, the distance measuring sensor 80 has a distance D between the opposing surfaces 28a and 32a associated with the push / pull operation. Detect changes. For example, when a push-pull operation is performed toward the front side in the Z-axis direction, the distance sensor 80 detects a decrease in the distance D between the opposing surfaces 28a and 32a. Conversely, when a push-pull operation is performed toward the rear side in the Z-axis direction, an increase in the distance D between the opposing surfaces 28a and 32a is detected by the distance measuring sensor 80. Therefore, the distance measuring sensor 80 can detect the operation direction of the push-pull operation in the Z-axis direction and the pressure level of the push-pull operation.

  Specifically, the operation direction in the Z-axis direction of the push / pull operation can be detected according to the increase / decrease in the distance D detected by the distance measuring sensor 80, and the absolute increase / decrease amount of the distance D detected by the distance measuring sensor 80 can be detected. Based on the value, it is possible to detect the pressure of the push-pull operation.

  Further, by providing the distance measuring sensor 80 between the opposing surfaces (not shown) of the housing 38 and the nut 42 facing each other in the X-axis direction, the operation direction of the push-pull operation in the X-axis direction and the push-pull operation The magnitude of the operating pressure can be detected.

  Therefore, the control unit 65 (movement control unit 68) specifies the measurement unit 15 corresponding to a specific operation pattern based on the distance detection result of the distance measuring sensor 80 in the Z-axis direction and the X-axis direction, as in the above embodiment. Movement control and coarse movement control of the measurement unit 15 can be performed.

  In addition, instead of the above-described Z-axis pressure sensor 60, X-axis pressure sensor 61, and distance measuring sensor 80, as a push-pull operation detection unit of the present invention, for example, distortion of the housing of the ophthalmologic apparatus 10 associated with the push-pull operation. A strain detection sensor or the like for detecting the above may be used. That is, the push-pull operation detection unit of the present invention is not particularly limited as long as it can detect a change in pressure, distortion, displacement, and the like in the ophthalmologic apparatus 10 accompanying the push-pull operation.

  In the above embodiment, the coarse movement in the Z-axis direction and the coarse movement in the X-axis direction of the measurement unit 15 are executed by the push-pull operation described above. For example, the coarse movement of the measurement unit 15 in the Y-axis direction is also performed. It may be executed by a push-pull operation in the Y-axis direction. In this case, if the push-pull operation in the Y-axis direction is detected by a Y-axis pressure sensor (not shown) or the like, and the push-pull operation in the Y-axis direction is a specific operation pattern, the measurement unit 15 corresponding to this is specified. Movement control may be executed.

  In the above embodiment, when the measurement unit 15 is finely moved, the operation lever 17 is tilted or rotated. However, the operation unit other than the operation lever 17, for example, an operation button (not shown) and a display on the screen of the monitor 16 are displayed. The measurement unit 15 may be finely moved by operating a touch operation screen or the like.

  In each of the above embodiments, the Z-axis drive unit 22 and the Z-axis base 21, the X-axis drive unit 24 and the X-axis base 23, and the Y-axis drive unit 25 are provided from the lower side to the upper side in the Y-axis direction. However, the order of these may be changed as appropriate. In addition, the configuration in which the electric drive unit 14 moves the measurement unit 15 in each of the XYZ axes is not limited to the configuration illustrated in FIG. 1 and the like, and may be arbitrarily changed.

  In each of the above-described embodiments, the case where the measurement unit 15 is held by the electric drive unit 14 so as to be movable in the axial directions of the XYZ axes with respect to the main body base 12 has been described. However, at least any one of these axial directions is described. The present invention can also be applied to the case where it is held movably in the direction.

  The correspondence information 79 (see FIG. 11) of the above embodiment includes a pressure sensor that detects a pressure change associated with the push-pull operation among the pressure sensors 60 and 61, a specific operation pattern of the push-pull operation, and a measurement unit. Although the correspondence relationship with the 15 specific movement controls is stored, only the correspondence relationship between the specific operation pattern and the specific movement control of the measurement unit 15 may be stored. In this case, when the push-pull operation corresponding to the pressure change pattern detected by any one of the pressure sensors 60 and 61 matches the specific operation pattern, the specific movement control of the measurement unit 15 corresponding to the specific operation pattern. Is executed.

  The movement control unit 68 of the above embodiment refers to the correspondence information 79 stored in advance in the storage unit 66, but stores it outside the ophthalmologic apparatus 10 (such as a server on the Internet and another ophthalmologic apparatus 10). Acquisition and reference of the correspondence relationship information 79 may be performed.

  In the above-described embodiment, predetermined movement control is executed in advance when the push-pull operation corresponding to the pressure change pattern detected by either of the pressure sensors 60 and 61 matches the specific operation pattern. However, the present invention is not limited to this. For example, when the push-pull operation corresponding to the pressure change pattern detected by each of the pressure sensors 60 and 61 matches a specific operation pattern determined in advance, the specific movement control of the measurement unit 15 determined in advance is performed. May be executed.

  In the above embodiment, the specific movement control and the coarse motion control of the measurement unit 15 are selectively performed by pushing and pulling operations on at least one of the electric drive unit 14, the measurement unit 15, and the operation lever 17. The present invention can also be applied to the case where only specific movement control is executed by a pulling operation. In this case, the disturbance control of the measurement unit 15 is performed by the operation of the operation lever 17 or the touch operation on the operation screen of the monitor 16 as in the conventional case.

  In the above embodiment, the specific movement control of the measurement unit 15 is performed when the absolute value of the pressure of the push-pull operation is less than the absolute value of the predetermined threshold value ± VL and the operation pattern of the push-pull operation matches the specific operation pattern. However, the specific movement control of the measurement unit 15 may be performed when the operation pattern matches the specific operation pattern regardless of the absolute value of the pressure of the push-pull operation. Thus, for example, when it is necessary to urgently stop auto alignment, auto alignment is performed when the operator performs a push-pull operation with a specific operation pattern such as tapping the electric drive unit 14 and the measurement unit 15 with a strong force. Emergency stop is possible.

  DESCRIPTION OF SYMBOLS 10 ... Ophthalmic apparatus, 12 ... Main body base, 14 ... Electric drive part, 15 ... Measurement unit, 17 ... Operation lever, 22 ... Z-axis drive part, 24 ... X-axis drive part, 28, 38 ... Housing, 28a, 32a ... Opposing surface, 32, 42 ... nut, 60 ... Z-axis pressure sensor, 61 ... X-axis pressure sensor, 65 ... control unit, 68 ... movement control unit, 79 ... correspondence information, 80 ... range sensor

Claims (8)

Base and
An eye characteristic acquisition unit that acquires the eye characteristics of the eye to be examined;
A drive unit that is provided on the base and moves the eye characteristic acquisition unit in a predetermined axial direction with respect to the base;
A push-pull operation detection unit for detecting a push-pull operation for pushing or pulling at least one of the eye characteristic acquisition unit and the drive unit in the axial direction;
Based on a specific operation pattern of the push-pull operation detected by the push-pull operation detection unit, the drive of the drive unit is controlled, and movement control of the eye characteristic acquisition unit associated with the specific operation pattern is performed. A movement control unit that performs certain specific movement control;
An ophthalmic device comprising:   The movement control unit performs the specific movement control when the push-pull operation detected by the push-pull operation detection unit matches the specific operation pattern, and performs the push-pull operation when they do not match. The ophthalmologic apparatus according to claim 1, wherein operation movement control for controlling the driving of the drive unit based on the push-pull operation detected by the detection unit and moving the eye characteristic acquisition unit according to the push-pull operation is performed.   The movement control unit refers to correspondence information stored in advance as a correspondence relationship between the specific operation pattern and the specific movement control, and the push / pull operation detected by the push / pull operation detection unit is the specific operation pattern. The ophthalmologic apparatus according to claim 2, wherein determination as to whether or not the operation pattern is matched and execution of the specific movement control when it is determined as matching are performed. The push-pull operation detection unit detects an operation direction of the push-pull operation and a pressure level of the push-pull operation,
The specific operation pattern is defined at least by a change pattern of the pressure within a range less than a predetermined threshold,
The movement control unit executes the operation movement control when the magnitude of the pressure detected by the push-pull operation detection unit is equal to or greater than the threshold in the case of the mismatch, and the magnitude of the pressure is The ophthalmologic apparatus according to claim 2, wherein execution of the operation movement control is stopped when the threshold value is less than the threshold value. The drive unit is
A first engagement unit that moves integrally with the eye characteristic acquisition unit;
A second engagement portion that engages with the first engagement portion;
A drive source for moving the second engaging portion along the axial direction;
With
The first engagement portion and the second engagement portion have opposing surfaces that face each other in the axial direction,
The push-pull operation detection unit is a pressure sensor connected to each of the opposed surfaces of both the first engagement unit and the second engagement unit, and both of the opposed units according to the operation direction. The ophthalmic device according to claim 4, wherein the ophthalmic device is a pressure sensor that is compressed or stretched between surfaces. The movement control unit has an auto alignment mode in which, based on a signal from the eye characteristic acquisition unit, drives the driving unit to automatically align the eye characteristic acquisition unit with respect to the eye to be examined.
The specific movement control includes first movement control for stopping movement of the eye characteristic acquisition unit during execution of the auto alignment mode, and execution of the auto alignment mode and the eye characteristic acquisition unit is applied to the eye to be examined. A second movement control for stopping the eye characteristic acquisition unit after moving the eye characteristic acquisition unit in a direction away from the eye to be examined.
The movement control unit performs the first movement control when the push / pull operation detected by the push / pull operation detection unit matches the specific operation pattern corresponding to the first movement control, and performs the push / pull operation. The ophthalmologic apparatus according to any one of claims 1 to 5, wherein the second movement control is performed when an operation matches the specific operation pattern corresponding to the second movement control. The specific movement control includes third movement control for moving the eye characteristic acquisition unit from a position for measuring one eye characteristic of both eyes of the eye to be measured to a position for measuring the other eye characteristic. ,
The movement control unit performs the third movement control when the push / pull operation detected by the push / pull operation detection unit matches the specific operation pattern corresponding to the third movement control. The ophthalmologic apparatus according to any one of 6. An ophthalmologic apparatus comprising: a base; an eye characteristic acquisition unit that acquires an eye characteristic of the eye to be examined; and a drive unit that is provided on the base and moves the eye characteristic acquisition unit in a predetermined axial direction with respect to the base. In the operation method of
A detection step in which a push-pull operation detection unit detects a push-pull operation that is a push-pull operation on at least one of the eye characteristic acquisition unit and the drive unit and that performs a push operation or pull operation in the axial direction;
Based on the specific operation pattern of the push / pull operation detected by the push / pull operation detection unit, the movement control unit controls the driving of the drive unit to acquire the eye characteristics associated with the specific operation pattern. A movement control step for performing a specific movement control that is a movement control of a part;
Method of operating an ophthalmic device having

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