JP2006110191A - Visual function examination system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a visual function examination system capable of saving time and effort in moving a subject eye examination device and an eye chart displaying device to their right places to shorten the examination time. <P>SOLUTION: This visual function examination system 1 comprises a subject's stool 3 connected with an eye examination table 2 via a connecting arm 36, a subject eye examination device 4 connected with the examination table 2 via supporting arms (a first arm 26 and a second arm 27), and an eye chart displaying device 5 for showing an eye chart to the subject. The system also includes a supporting arm drive unit 85 for moving the subject eye examination device 4, and an eye chart displaying device drive unit 87 for moving the eye chart displaying device 5, so that the subject's stool 3, the subject eye examination device 4, and the subject chart displaying device 5 can be put into alignment with each other when the position of the subjects stool 3 is decided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a visual function inspection system for inspecting the visual function of a subject's eye, and more particularly to a visual function inspection system configured to perform an inspection while a subject is seated.

  Conventionally, the visual function test is generally performed while the subject is sitting. Therefore, the visual function inspection system is usually configured to include an optometry table, a subject chair, and various optometry apparatuses (see, for example, Patent Document 1).

  Representative examples of optometry devices used in visual function tests include subjective optometry devices such as phoropters, target presentation devices that present targets (charts) for subjective optometry, and objective optometry devices such as autorefractometers. (In general, the desired ophthalmic device is used as appropriate). The objective optometry apparatus is placed directly on an optometry table, for example.

  The subjective optometry apparatus is provided, for example, via an optometry arm connected to the upper end of a column erected on an optometry table, and in front of the subject's eye sitting on a subject's chair. Can be placed. The target presentation device is provided, for example, directly on the floor of the examination room or on a mounting table installed on the floor.

  When performing the visual function test, the optometry apparatus needs to be in a predetermined arrangement state. In particular, when performing subjective optometry, the subject (subject's chair), the subjective optometry device, and the target presentation device need to be arranged in a straight line. However, it is normal for the patient chair to be freely movable, and because there are individual differences in the posture of the subject, the device etc. is moved to an appropriate position for each examination. The inspection had to take time and labor.

  In addition, although there are many limited spaces in eyeglass stores and eye clinics where visual function tests are performed, the test chairs are not inspected because the subject chairs can be moved freely as described above. At times, there are many requests for effective storage of patient chairs to secure space. Further, an examiner's chair is usually provided beside the optometry table, but there has been a similar demand for the storage.

JP-A-11-104077 (paragraphs [0014] and [0015], FIG. 1)

  The present invention has been made in view of such circumstances, while reducing the effort for arranging the subject chair, the subjective optometry apparatus, and the optotype presenting apparatus in an appropriate position, that is, in a straight line, An object of the present invention is to provide a visual function inspection system capable of shortening the inspection time.

  Another object of the present invention is to provide a visual function inspection system that can effectively store a chair used at the time of inspection and can save space in a spectacle store, an ophthalmic clinic or the like.

  In order to achieve the above object, the invention described in claim 1 provides refractive power to a subject's eye that is movable and the subject's eye that is seated on the subject's chair. A movable subjective optometry device, and a target presentation device that is disposed on the opposite side of the subject chair with respect to the subjective optometry device and presents a target toward the subject eye, A visual function testing system for examining a visual function of the eye to be examined by responding to a visual recognition state of the target by the eye to which refractive power is applied, the subjective optometry apparatus, the subject chair, Even if any one of the three positions with respect to the visual target presenting device is changed, there is provided an arrangement means for arranging the three in a substantially straight line.

  The invention described in claim 2 is the visual function testing system according to claim 1, wherein one end is connected to the optometry table that supports the subjective optometry apparatus and the chair for the subject. A connecting arm; and a connecting mechanism that is fixed to the optometry table and holds the other end of the connecting arm so that the connecting arm can be rotated in a horizontal direction. The connecting mechanism can be moved to a storage position below the top plate of the optometry table.

The invention described in claim 3 is the visual function testing system according to claim 1 or 2, wherein the disposing means includes:
Chair position detecting means for acquiring position information of the subject chair, optometry apparatus moving means for moving the subjective optometry apparatus, and optotype presenting apparatus moving means for moving the optotype presenting apparatus. The optometry apparatus moving means moves the subjective optometry apparatus based on the acquired position information of the subject chair, and the optotype presenting apparatus moving means is configured to acquire the acquired subject. The three are arranged in a substantially straight line by moving the target presentation device based on the position information of the examiner's chair.

  According to a fourth aspect of the present invention, there is provided the visual function testing system according to any one of the first to third aspects, wherein the placement means includes the subjective optometry apparatus and the subject. Straight line calculating means for obtaining a straight line connecting any two positions of the chair and the target presentation device, and a deviation for calculating a deviation of the remaining one of the three positions with respect to the obtained straight line Calculating means, and moving the remaining one in accordance with the calculated deviation, thereby arranging the three in a substantially straight line.

  Further, the invention described in claim 5 is the visual function inspection system according to claim 2, wherein the examiner's chair on which the examiner sits and the examiner's chair having one end connected to the examiner's chair A connection arm, and an examiner chair connection mechanism that is fixed to the optometry table and holds the other end of the connection arm for the examiner so that the connection arm for the examiner can be rotated horizontally. The examiner's chair may be moved to a storage position under the top plate of the optometry table by the examiner's chair connection mechanism.

  The present invention includes a movable subjective optometry apparatus that imparts refractive power to a subject's eye, a movable subject chair, and a target presentation device that presents a target toward the subject's eye. A visual function test system for inspecting the visual function of a subject's eye by responding to the visual state of the target by a subject's eye to which refractive power is applied, comprising a subjective optometry device, a subject's chair, and a target presentation device Are arranged in a substantially straight line, so that the labor for arranging the subject chair, the subjective optometry apparatus and the target presentation apparatus at appropriate positions is reduced, and the examination time is shortened. Can be achieved.

  Further, according to the present invention as set forth in claim 2 or claim 5, the chair used by the examinee or the examiner can be stored under the top plate of the optometry table. Can be achieved.

  An example of a preferred embodiment of a visual function inspection system according to the present invention will be described in detail with reference to the drawings.

  The visual function testing system according to the present invention is arranged on the opposite side of the subject's chair with respect to the subjective optometry device, the subject's chair, and the subjective optometry device that gives refractive power to the subject's eye. And a target presentation device that presents a target toward the eye to be examined, and the subjective optometry device, the subject chair, and the target presentation device are arranged (almost) on a straight line. It is characterized by having means to act.

  The first to third embodiments will be described below as an example of a configuration that realizes the operation of the present invention. In the first embodiment, a configuration in which the subjective optometry apparatus and the target presentation apparatus are moved according to the position of the subject chair will be described. In the second embodiment, a configuration in which the subject chair and the target presentation device are moved in accordance with the position of the subjective optometry apparatus will be described. In the third embodiment, a configuration in which the subjective optometry apparatus and the subject chair are moved in accordance with the position of the optotype presenting apparatus will be described.

<First Embodiment>
First, the first visual function testing system according to the present invention, which operates to move the subjective optometry apparatus and the target presentation apparatus according to the position of the subject chair, so that they are arranged in a straight line. Embodiments will be described.

[System configuration]
1 to 4 show an example of an external configuration of the visual function inspection system of the present embodiment. FIG. 1 shows the external appearance of the system in a state where the subject chair is stored (storage state), and FIG. 2 shows the external appearance of the system in the state (use state) when the subject chair is used. Represents. FIG. 3 shows the configuration of the subject chair. FIG. 4 shows the appearance of the controller. FIG. 5 shows an example of the configuration of the control system of the visual function inspection system according to the present invention.

  The visual function testing system 1 of the present embodiment includes an optometry table 2, a subject chair 3, a subjective optometry device (phoropter) 4, a target presentation device 5, and a mounting table 6 shown in FIGS. 1 and 2. It includes a controller 7 shown in FIG. These are electrically connected (details will be described later in the description of the control system). The subject chair 3 is connected to the optometry table 2 by a connecting arm 36, and can be rotated in the horizontal direction by a rotation mechanism unit 35. The controller 7 is installed on the optometry table 2 and operated by an examiner (not shown).

(Optometry table)
The optometry table 2 shown in FIG. 1 and FIG. 2 is installed in a state of being supported on the floor of an eyeglass store, an ophthalmic clinic or the like (referred to as an examination room) by the first support portion 21 and the second support portion 22. . The first support portion 21 is provided with legs 21a, 21b, 21c formed horizontally on the floor for stably supporting the optometry table 2. The foot 21c is extended in the direction in which the subject (not shown) is located. Furthermore, the first support portion 21 is formed with a standing portion 21A extending vertically upward.

  The standing portion 21 </ b> A of the first support portion 21 is inserted into the hollow second support portion 22. The second support portion 22 can be displaced in the vertical direction by the examiner's operation, and the height of the top plate 24 can be adjusted. This operation is performed from a switch (not shown) provided on the optometry table 2, a controller 7, or the like. The horizontal sections of the standing portion 21A and the second support portion 22 are polygonal so that the first support portion 21 and the second support portion 22 do not rotate in the horizontal direction.

  The upper end of the second support portion 22 is fixed to a drawer portion 23 that slidably supports a drawer 23a that houses various members for inspection, writing tools, the controller 7, and the like. The top plate 24 is provided on the upper portion of the drawer portion 23.

  At the end of the top plate 24 of the optometry table 2, there is provided an arm holding portion 25 that holds the lower end of the first arm 26 that supports the subjective optometry apparatus 4 so as to be rotatable in the horizontal direction. An electromagnetic brake that disables the rotation of the first arm 26 (particularly manually) is provided in the arm holding portion 25.

  One end of a second arm 27 extending in a substantially horizontal direction is connected to the upper end of the first arm 26. On the other end side of the second arm 27, the subjective optometry apparatus 4 is suspended so as to be rotatable in the horizontal direction. A handle 28 that is gripped when changing the position of the subjective optometry apparatus 4 is provided at the other end of the second arm 27, and an electromagnetic brake in the arm holding unit 25 is provided at the base of the handle 28. A switch 29 for switching ON / OFF is provided.

  Thereby, the subjective optometry apparatus 4 can be rotated in the horizontal direction together with the first arm 26 and the second arm 27 and can change its position. For example, in the state shown in FIG. 1, the subjective optometry apparatus 4 is retracted to a position (accommodation position) on the back side in the drawing of the optometry table 2, and in the state shown in FIG. It is arrange | positioned in the position (use position) by the side, ie, the subject side. The first arm 26 and the second arm 27 constitute a support arm that supports the subjective optometry apparatus 4.

  A storage unit 20 is provided on a side surface of the second support unit 22 and receives power from a power supply outside the system to supply power to the subjective optometry apparatus 4 and the electromagnetic brake. An electrical circuit such as a control circuit is stored.

(Chair for patient)
The subject chair 3 shown in FIGS. 1 to 3 is a chair for the subject to sit and conduct an examination. The chair 3 for a subject is provided with a circular seating portion 31 on which the subject is seated. As shown in FIG. 3, the seat portion 31 includes a cushion 31A and a mounting frame 31B to which the cushion 31A is attached.

  At the center position of the mounting frame 31B of the seating portion 31, the upper end of the rod-like support leg 33 is fixed. The support leg 33 is inserted into a tubular member 32 to which one end of a connecting arm 36 that connects the subject chair 3 and the optometry table 2 is fixed, and is slidable in the vertical direction. A grounding portion 34 is attached to the lower end of the support leg 33.

  In addition, although illustration is abbreviate | omitted, the support leg 33 consists of a structure with which several (for example, two) rod-shaped members were connected, The length can be changed now. Thereby, the length of the support leg 33, that is, the height of the seating portion 31 can be adjusted according to the height of the subject.

  Between the center position of the lower surface of the attachment frame 31 </ b> B of the seating portion 31 and the upper end of the tubular member 32, a spring member 37 that applies an upward biasing force to the seating portion 31 is disposed. The spring member 37 is provided so as to be wound around the support leg 33. When the subject is not sitting on the seating portion 31, the grounding portion 34 is away from the floor of the examination room, and the seating portion 31 and the support leg 33 move downward in response to the subject sitting. Then, the grounding unit 34 acts on the floor of the examination room to support the weight of the subject.

  One end of the connecting arm 36 is connected to the tubular member 32 of the subject chair 3 as described above. Further, the other end is led into a rotation mechanism portion 35 attached to an attachment member 21d fixed to the foot 21c of the optometry table 2.

  As shown in FIGS. 1 and 2, the rotation mechanism unit 35 is configured in a cylindrical shape whose axial direction is the vertical direction. The connecting arm 36 has a shape bent in an L shape from the one end to the other end, and the other end portion is fitted into the rotation mechanism portion 35 from the upper end. Although not shown, the rotation mechanism unit 35 is provided with a bearing for smoothly rotating the other end portion of the connecting arm 36 in the horizontal direction.

  In this way, the subject chair 3 is located from the position (storage position) below the top plate 24 of the optometry table 2 shown in FIG. 1 to the side position (use position) of the optometry table 2 shown in FIG. It can be moved smoothly from the use position to the storage position, and can be moved smoothly.

  The rotation mechanism 35 constitutes a “connection mechanism” according to the present invention.

(Awareness optometry device)
FIG. 1 shows the configuration of the front side (the side facing the subject) of the subjective optometry apparatus 4, and FIG. 2 shows the configuration of the back side (the side facing the visual target presentation apparatus 5). ing.

  The subjective optometry apparatus 4 includes a pair of left and right optometry units 4L and 4R each incorporating various lenses for imparting refractive power to the subject's eyes (eye to be examined). The optometry unit 4L imparts refractive power to the left eye (left eye) of the subject, and the optometry unit 4R imparts refractive power to the right eye (right eye). The optometry units 4L and 4R are formed with optometry windows 42L and 42R, respectively, and various lenses are selectively placed on the optometry windows 42L and 42R in response to instructions from the controller 7. The left and right eyes visually recognize the chart presented by the optotype presenting device 5 through the optometry windows 42L and 42R.

  The left and right optometry units 4L, 4R are supported by the drive mechanism 41 and are independently driven in the left-right direction. The subjective optometry apparatus 4 is connected to the second arm 27 so as to be rotatable in the horizontal direction above the drive mechanism 41.

  As shown in FIG. 1, a forehead pad 43 on which the forehead of the subject abuts at the time of optometry is provided on the front surface of the subjective optometry apparatus 4.

(Target display device)
The target presentation device 5 has a known configuration for displaying a Landolt ring, a landscape chart, and the like on the screen 51.

  The optotype presenting apparatus 5 is placed on the placing table 6 so that the screen 51 and the optometry windows 42L and 42R of the subjective optometry apparatus 4 have the same height. The mounting table 6 includes a base 61, a standing part 62, and a top plate 63, and the target presentation device 5 is installed on the top plate 63. The optotype presenting apparatus 5 is arranged at a position via a predetermined distance from the subjective optometry apparatus 4. The distance between the optotype presenting apparatus 5 and the subjective optometry apparatus 4 is referred to as an optometry distance. The optometry distance is, for example, 75 centimeters, 3 meters, and 5 meters.

  The target presentation device 5 is movable in a direction parallel to the screen 51 and horizontal. Although an illustration is omitted as an example of the configuration for that purpose, a rail (rail member) arranged in parallel to the screen 51 is provided on the top plate 63 of the mounting table 6, and the visual target presentation device 5 is attached to the rail. You may make it move along. The optotype presenting apparatus 5 is driven by a driving device such as a motor and moves on the rail. It is also possible to move the visual target presentation device 5 by providing a rail member and a driving device in a direction orthogonal to the screen 51.

  Further, a turntable driven by a driving device such as a motor is provided on the top plate 63 of the mounting table 6 and the target presentation device 5 is installed on the turntable so that the orientation of the screen 51 can be changed. Can be configured.

(controller)
The controller 7 shown in FIG. 4 has an operation panel 71 for operating each part of the visual function inspection system 1 and a display panel 72 for displaying various information. The operation panel 71 is provided with a plurality of keys, dials, and the like, and a selection operation of a lens to be arranged in the optometry windows 42L and 42R of the subjective optometry apparatus 4 and a selection operation of a chart to be displayed on the screen 51 of the target presentation apparatus 5 The display panel 72 is used for operations related to display contents.

[Control system configuration]
Next, the configuration of the control system of the visual function inspection system 1 will be described with reference to the block diagram shown in FIG.

  The visual function testing system 1 according to the present embodiment includes a control unit 80, a subject detection unit 81, a chair position detection unit 82, an information storage unit 83, a movement amount calculation unit 84, a support arm drive unit 85, and an optometry apparatus rotation unit. 86, an optotype presenting apparatus driving unit 87, and an optotype presenting apparatus rotating unit 88.

(Control part)
The control unit 80 includes an arithmetic control device such as a CPU, and controls each unit of the visual function inspection system 1 according to a predetermined program. The control unit 80 is stored in, for example, the storage unit 20 of the optometry table 2 or the controller 7.

(Subject detection unit)
The subject detection unit 81 operates to detect that the subject has sat on the seating portion 31 of the subject chair 3 and to output a detection signal to the control unit 80. The subject detection unit 81 is located at a position where pressure is applied when the subject is seated, such as the cushion 31A of the seating portion 31 of the subject chair 3 or the lower surface (grounding portion) of the grounding portion 34. The pressure sensor is provided. Moreover, you may use the sensor which detects the displacement (fall) of the seating part 31 when a subject sits down.

(Chair position detector)
The chair position detector 82 constitutes the “chair position detector” of the present invention, detects the current position of the subject's chair 3, acquires information (position information) indicating the position, and It operates to output information to the control unit 80.

  The chair position detection unit 82 includes, for example, an encoder that detects the rotation position of the connecting arm 36 (and the subject's chair 3) by the rotation mechanism unit 35. In that case, the chair position detection unit 82 acquires the position information of the subject chair 3 based on, for example, the radius and angle of rotation of the subject chair 3 by the rotation mechanism unit 35.

  Here, the turning radius of the subject chair 3 is between the turning axis (vertical direction) by the rotation mechanism 35 and the central axis (vertical direction) of the support leg 33 of the subject chair 3. It can be defined by the horizontal distance. In the configuration of the present embodiment, the turning radius is constant, and the value is stored in advance in the information storage unit 84, for example. Further, the rotation angle of the subject chair 3 can be obtained by detecting the displacement from the predetermined reference position (angle 0 °) in the rotation by the rotation mechanism unit 35 with the encoder.

  In addition, the chair position detection part 82 performs the above-mentioned detection process corresponding to the detection request signal output by the control part 80 which received the detection signal from the subject detection part 81. Accordingly, the chair position detection unit 82 detects the position of the subject chair 3 when the subject sits on the subject chair 3 in the use state shown in FIG.

(Information storage unit)
The information storage unit 83 includes a readable / writable memory, a hard disk drive, and the like. The control unit 80 performs information writing processing and reading processing on the information storage unit 83. The information storage unit 83 holds the position information of the visual target presentation apparatus 5 and the position information of the subjective optometry apparatus 4.

  The position information held in the information storage unit 83 is information representing the position in the use state shown in FIG. When the position of the target device is not changed or when the position in the use state is always the same, this position information is stored in the information storage unit 83 in advance.

  When the position of the target device in the use state is variable, the position information of the device is acquired and stored in the information storage unit 83. In this case, the positional information of the subjective optometry apparatus 4 includes, for example, an encoder that detects the rotation angle of the first arm 26, and the detected rotation angle and the rotation radius (the first optometry apparatus 4). The horizontal distance between the rotation axis of one arm 26 and the attachment position of the subjective optometry apparatus 4 with respect to the second arm 27). Further, the position information of the visual target presentation device 5 can be acquired by a position sensor or the like that detects the position of the visual target presentation device 5 on the rail described above.

  Here, the positional information of the subject's chair 3, the subjective optometry apparatus 4, and the target presentation apparatus 5 is expressed by, for example, coordinate values in the same coordinate system. As a coordinate system for expressing such position information, a three-dimensional space coordinate system or a plane coordinate system arbitrarily set in the examination room can be applied. For example, expressions such as “on a straight line” and “straight line” in the present invention are straightforward when a coordinate value on a straight line, a straight line, etc. in the coordinate system or a coordinate value in a three-dimensional space coordinate system is projected onto a plane coordinate system. A straight line or the like is shown on the line.

  Hereinafter, as an example of the coordinate system, the left-right direction when viewing the target presentation device 5 side from the subject side is set to the x direction, and the direction from the subject side to the target presentation device 5 is set to the y direction. Set. The x direction and the y direction are set in the horizontal direction.

(Movement amount calculation unit)
The movement amount calculation unit 84 moves the subjective optometry apparatus 4 and the visual target presentation apparatus 5 that are necessary for arranging the subject's chair 3, the subjective optometry apparatus 4 and the visual target presentation apparatus 5 on a straight line. A process for calculating the quantity is executed. As will be described below, the movement amount calculation unit 84 constitutes a “straight line calculation unit” and a “deviation calculation unit” of the present invention.

The movement amount calculation unit 84 calculates the movement amount of the subjective optometry apparatus 4 and the target presentation apparatus 5 by performing the following arithmetic processing, for example. First, x coordinate x _1, the position information of the target presenting apparatus 5 held in the information storage unit 83 of the position information of the subject chair 3 acquired by the chair position detector 82 (x _{1, y 1)} The x coordinate x _{2 of} (x ₂ , y ₂ ) is compared, and when there is a difference of a predetermined value or more between them, the x coordinate of the target presentation device 5 is adjusted to the subject's chair 3. The amount of movement x ₁ −x ₂ in the x direction of the target presentation device 5 is obtained. As a result, the screen 51 is disposed in front of the subject chair 3.

Next, regarding the positional information (x ₃ , y ₃ ) of the subjective optometry apparatus 4 held in the information storage unit 83, the amount of movement in the x direction for matching the x coordinate x ₃ with the subject's chair 3. x ₁ −x ₃ is obtained. This movement amount x ₁ -x ₃ corresponds to a displacement of the position of the subjective optometry apparatus 4 with respect to a straight line (parallel to the y axis) connecting the position of the subject chair 3 and the position of the visual target presentation apparatus 5. As described above, the subjective optometry apparatus 4 and the target presentation apparatus 5 for arranging the subject chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 on a straight line (on a straight line parallel to the y axis). The amount of movement is obtained.

Here, when the difference between the y-coordinate y ₂ and y-coordinate y ₃ of the subjective-type optometric apparatus 4 of the optotype presenting apparatus 5 does not coincide with the eye distance D, y 2 _-y 3 '= _D become subjective The y coordinate value y ₃ ′ of the optometer 4 is calculated. _{Incidentally,} y 2 asking for _'-y 3 = become vision y-coordinate value _{y 2} of index indicating device _{5 D', y 2 '-y} 3' = y -coordinate of the composed optotype presenting apparatus 5 D value _{y 2} 'And the y-coordinate value y ₃ ' of the subjective optometry apparatus 4 may be obtained.

As another example of the movement amount calculation process, when x ₁ ≠ x ₂ and when the target presentation device 5 is not moved in the x direction, the movement amount calculation unit 84 firstly displays the target presentation device 5. Referring to the position information (x ₂ , y ₂ ) and the position information (x ₃ , y ₃ ) of the subjective optometry apparatus 4, the visual target presentation device that satisfies y ₂ ′ −y ₃ = D (optometry distance) The y coordinate value y ₂ ′ of 5 is obtained. Next, on the basis of the position information (x ₁ , y ₁ ) of the subject chair 3 and the changed position information (x ₂ , y ₂ ′) of the target presentation device 5, a straight line connecting these coordinates (For example, a and b are obtained by substituting each coordinate value for y = ax + b). Subsequently, the coordinates (x ₃ ′ y ₃ ) of the intersection of this straight line equation and the equation y = y ₃ are obtained. Then, a displacement amount x ₃ ′ −x ₃ in the x direction for matching the x coordinate of the position information of the subjective optometry apparatus 4 with the intersection is obtained. As described above, the subjective optometry apparatus 4 and the target presentation apparatus 5 for arranging the subject chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 on a straight line (on a straight line oblique to the y axis). The amount of movement is obtained.

  Since the subjective optometry apparatus 4 moves along an arc-shaped trajectory centered on the first arm 26, it is necessary to convert the calculated movement amounts in the x and y directions into the rotation angle θ. In this conversion process, since the horizontal distance between the rotation axis of the first arm 26 and the subjective optometry apparatus 4 (attachment position thereof), that is, the rotation radius r is constant, the xy coordinate system (x, y ) And the polar coordinate system (r, θ) can be easily performed using a conversion formula x = r cos θ, y = sin θ. The conversion process is executed by the movement amount calculation unit 84.

  In addition, the subjective optometry apparatus 4 may not be arranged at the target position even if it is rotated around the first arm 26. In this case, the left and right optometry units 4L and 4R are moved by the drive mechanism unit 41. The desired arrangement is achieved. The movement amount of the optometry units 4l and 4R at this time can also be easily calculated using the above conversion formula or the like. The calculation process is also performed by the movement amount calculation unit 84.

  In the above processing, the relationship between the subject chair 3 and the target presentation device 5 is obtained first, and the movement amount of the subjective optometry device 4 is obtained using the relationship. While calculating | requiring the relationship between the chair 3 and the subjective optometry apparatus 4 previously, you may make it obtain | require the movement amount of the optotype presentation apparatus 5 using the calculated | required relationship.

  As described above, the subjective optometry apparatus 4 is connected to the second arm 27 so as to be rotatable in the horizontal direction at the upper part of the drive mechanism 41, but the movement amount calculation unit 84 is conscious. Calculation of the amount of rotation of the type optometer 4 is also executed. This calculation process is performed in order to make the front of the subjective optometry apparatus 4 face the subject seated on the subject chair 3.

  The reference position (α = 0) of the rotation angle α of the subjective optometry apparatus 4 with respect to the second arm 27 is a position where the front surface of the subjective optometry apparatus 4 is parallel to the longitudinal direction of the second arm 27. FIG. 6 is a top view of the subjective optometry apparatus 4 and the second arm 27 when the rotation angle α = 0. Reference numeral 27 a indicates a rotation axis around the first arm 26 of the second arm 27 and the subjective optometry apparatus 4, and reference numeral 27 b indicates a rotation axis of the subjective optometry apparatus 4 with respect to the second arm 27.

  As shown in FIG. 6 (A), when the second arm 27 is parallel to the x direction, the front surface of the subjective optometry apparatus 4 is directly facing the subject. As shown in FIGS. 6B and 6C, when the second arm 27 is not parallel to the x direction, the front surface of the subjective optometry apparatus 4 does not face the subject. In that case, the subject must perform an examination in an unnatural posture such as twisting the neck or body. In FIG. 6, the subject chair 3 is positioned below, and the visual target presentation device 5 is positioned above.

  Therefore, the movement amount calculation unit 84 calculates the rotation angle α of the subjective optometry apparatus 4 for the front surface to face the subject. The case where the subject chair 3, the subjective optometry apparatus 4, and the target presentation apparatus 5 are arranged on a straight line parallel to the y-axis will be described in detail. As shown in FIG. Is parallel to the x direction, the front is already directly facing the subject, so that the subjective optometry apparatus 4 is not rotated and α = 0 (see FIG. 7A). ).

  On the other hand, when the second arm 27 is rotated beyond the position parallel to the x direction as shown in FIG. 6 (B), the front surface is directed to the subject as shown in FIG. 7 (B). In order to arrange them in pairs, it is necessary to rotate the subjective optometry apparatus 4 counterclockwise in FIG. Further, when the second arm 27 is not rotated to a position parallel to the x direction as shown in FIG. 6C, the subjective optometry apparatus 4 is rotated clockwise as shown in FIG. 7C. Therefore, it is necessary to place the front face directly on the subject.

  In these cases, the movement amount calculation unit 84 calculates the angle formed by the longitudinal direction of the second arm 27 with respect to the x direction based on the rotation angle of the second arm 27, and sets the sign (±) of the angle. The changed value is obtained as the rotation angle α of the subjective optometry apparatus 4.

  In the case where the subject chair 3, the subjective optometry apparatus 4, and the target presentation apparatus 5 are arranged on a straight line that is oblique to the y axis, the rotation is similarly performed in consideration of the oblique angle. The angle α can be obtained.

  As described above, the visual target presentation device 5 is also rotated in the horizontal direction by a turntable or the like. The movement amount calculation unit 84 calculates a rotation angle β for rotating the visual target presentation device 5 so that the screen 51 is orthogonal to the y-axis. This rotation angle β is calculated in the same manner as the rotation angle α of the subjective optometry apparatus 4. In addition, when the subject chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 are arranged on a straight line oblique to the y axis, the rotation angle β is set in consideration of the oblique angle. Can be sought.

  In the above description, the movement amount when moving the subjective optometry apparatus 4 and the target presentation apparatus 5 in the horizontal direction (including rotation) has been described, but they are moved in the vertical direction (z direction). The amount of movement at that time can also be obtained by a similar calculation. Note that the subjective optometry apparatus 4 is moved up and down together with the optometry table 22, and the target presentation apparatus 5 is moved up and down by an unillustrated vertical drive device.

(Support arm drive)
The support arm drive unit 85 constitutes the “optometry apparatus moving means” of the present invention. The support arm driving unit 85 rotates the first arm 26 to rotate the second arm 27 and the subjective optometry apparatus 4 along a trajectory on an arc. The support arm drive unit 85 includes, for example, a stepping motor provided inside the optometry table 2.

(Optometry device rotating part)
The optometry device rotation unit 86 includes, for example, a stepping motor provided in the drive mechanism unit 41 of the subjective optometry device 4 and rotates the subjective optometry device 4 with respect to the second arm 27. Acts as follows.

(Target presentation device drive unit)
The visual target presentation device drive unit 87 includes a drive device such as a stepping motor that moves the visual target presentation device 5 along the aforementioned rail. Further, the above-described rail and the target presentation device driving unit 87 constitute “target presentation device moving means” of the present invention.

(Target presentation device rotating part)
The optotype presenting apparatus rotating unit 88 includes a configuration for rotating the optotype presenting apparatus 5 in the horizontal direction, and includes, for example, the above-described turntable.

  The “placement means” of the present invention for placing the subject's chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 on a substantially straight line is a chair position detection unit 82 (a movement amount calculation unit 84). The support arm drive unit 85 includes the rail and the target presentation device drive unit 87 described above.

[Processing procedure]
The processing procedure of the visual function inspection system 1 having the above-described configuration will be described along the inspection flow. The flowchart shown in FIG. 8 represents an example of the flow of inspection by the visual function inspection system 1.

  Before the start of the inspection, the visual function inspection system 1 is in the storage state shown in FIG. 1 (S0). The subject or the like manually moves the subject's chair 3 from the storage position to an appropriate position (S1). This appropriate position varies depending on the physique and posture of the subject.

  When the subject is seated on the subject chair 3 (S2), a detection signal is output from the subject detection unit 81 (S3). Upon receiving this detection signal, the control unit 80 requests the chair position detection unit 82 to perform detection processing. In response to this request, the chair position detection unit 82 acquires the position information of the subject chair 3 (S4). The acquired position information is sent to the control unit 80 and stored in the information storage unit 83, for example. These processes are executed in parallel with an inquiry to the subject.

  When the inquiry is completed, the examiner operates the switch 29 at the tip of the second arm 27 to release the electromagnetic brake, and holds the handle 28 to move the subjective optometry apparatus 4 from the housed state of FIG. 2 and the switch 29 is operated again to apply an electromagnetic brake so that the subjective optometry apparatus 4 cannot be moved manually (S5). At this stage, it is sufficient to move the subjective optometry apparatus 4 to a rough use position.

  When the control unit 80 receives a predetermined examination start request by operating the switch 29 (S5) or the controller 7, the position information of the subjective optometry apparatus 4 and the target presentation apparatus 5 is acquired by an encoder or the like. It memorize | stores in the memory | storage part 83 (S6).

  Based on the positional information of the subject's chair 3 acquired in step S4 and the positional information of the subjective optometry apparatus 4 and the target presentation apparatus 5 acquired in step S5, the movement amount calculation unit 84 is conscious. A movement amount along the arcuate trajectory of the expression optometry apparatus 4, a rotation angle of the subjective optometry apparatus 4 with respect to the second arm 27, a movement amount (movement distance) along the rail of the target presentation apparatus 5, and The rotation angle of the target presentation device 5 is calculated (S7).

  The control unit 80 converts each calculation result by the movement amount calculation unit 84 into an electric signal such as a pulse signal, and drives an electric signal corresponding to the movement amount along the arc-shaped locus of the subjective optometry apparatus 4 to drive the support arm. The electric signal corresponding to the rotation angle of the subjective optometry apparatus 4 with respect to the second arm 27 is transmitted to the optometry apparatus rotation section 86 and corresponds to the amount of movement along the rail of the target presentation apparatus 5. An electrical signal to be transmitted is transmitted to the target presentation device drive unit 87, and an electrical signal corresponding to the rotation angle of the target presentation device 5 is transmitted to the target presentation device rotation unit 88 (S8).

  The support arm drive unit 85 receives an electrical signal corresponding to the movement amount along the arc-shaped locus of the subjective optometry apparatus 4 and rotates the first arm 26 by an angle corresponding to the movement amount. The subjective optometry apparatus 4 is moved (S9).

  The optometry device rotation unit 86 receives an electrical signal corresponding to the rotation angle of the subjective optometry device 4 with respect to the second arm 27, rotates the subjective optometry device 4 by the rotation angle, and covers the front surface thereof. The examiner is directly faced (S10).

  The optotype presenting apparatus driving unit 87 receives the electrical signal corresponding to the movement amount along the rail of the optotype presenting apparatus 5 and moves the optotype presenting apparatus 5 along the rail by the movement distance (S11).

  The optotype presenting device rotating unit 88 receives an electrical signal corresponding to the rotation angle of the optotype presenting device 5, rotates the optotype presenting device 5 by the rotation angle, and moves the screen 51 to the subject. Directly face each other (S12).

  Through the above processing, the subject chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 are arranged on a straight line, and are arranged so that the front surface of the subjective optometry apparatus 4 faces the subject. Then, the screen 51 of the optotype presenting apparatus 5 is also arranged facing the subject.

  When the movements of the subjective optometry apparatus 4 and the target presentation apparatus 5 are completed, the examination is started (S13).

[effect]
As described above, the visual function inspection system 1 of the present embodiment detects the position of the subject chair 3 when the subject is seated, and based on the detection result, the subjective optometry apparatus 4 and the visual target. The presenting device 5 is moved so that the subject chair 3, the subjective optometry device 4, and the target presentation device 5 are automatically arranged in a straight line, so that they are arranged at appropriate positions in the examination. Time and effort is reduced. Moreover, since the preparation time for inspection is shortened, the inspection can be shortened.

  In addition, according to the visual function testing system 1 of the present embodiment, when the subject chair 3 is not used, it can be stored in a position below the top plate 24 of the optometry table 2, so that the eyeglass store, the ophthalmic clinic, etc. Space can be saved.

<Second Embodiment>
Next, a second embodiment of the visual function inspection system according to the present invention will be described. The visual function inspection system according to the present embodiment is configured to move the subject chair and the target presentation device in accordance with the position of the subjective optometry apparatus.

  FIG. 9 shows an example of the configuration of the control system of the visual function inspection system 100 of the present embodiment. The visual function inspection system 100 has the same external configuration as the visual function inspection system 1 of the first embodiment. In the following, reference is made to the drawings in the first embodiment.

  The visual function testing system 100 includes a control unit 110, an optometry apparatus position detection unit 111, an information storage unit 112, a movement amount calculation unit 113, a connection arm drive unit 114, a target presentation device drive unit 115, and a target presentation device rotation unit. 116 is comprised.

  The control unit 110, the information storage unit 112, the target presentation device driving unit 115, and the target presentation device rotating unit 116 are respectively the control unit 80, the information storage unit 83, and the target presentation device driving unit in the first embodiment. 87 and the target presentation device rotation unit 88.

  The information storage unit 112 holds the position information of the visual target presentation device 5 and also holds the position information of the subject chair 3. The acquisition method of these position information is based on 1st Embodiment.

(Detector position detector)
The optometry apparatus position detection unit 111 detects the current position of the subjective optometry apparatus 4, acquires position information indicating the position, and operates to output the position information to the control unit 110.

  The optometry apparatus position detection unit 111 includes, for example, an encoder that detects the rotational position of the first arm 36 (and the second arm 27 and the subjective optometry apparatus 4) by the arm holding unit 25. In that case, the optometry apparatus position detection unit 111 acquires the position information of the subjective optometry apparatus 4 based on, for example, the rotation radius and the rotation angle of the subjective optometry apparatus 4 by the arm holding unit 25.

  Here, the turning radius of the subjective optometry apparatus 4 is defined by the horizontal distance between the turning shaft 27a and the turning shaft 27b shown in FIG. In the configuration of the present embodiment, the turning radius is constant, and the value is stored in advance in the information storage unit 112, for example. The rotation angle of the subjective optometry apparatus 4 can be obtained by detecting the displacement from a predetermined reference position (angle 0 °) in the rotation by the arm holding unit 25 with the encoder.

  Note that the optometry apparatus position detection unit 111 acquires position information of the subjective optometry apparatus 4 in response to a predetermined detection start request. The detection start request is made, for example, by operating the switch 29 for fixing the position after moving the subjective optometry apparatus 4 to a (rough) use position, or operating the controller 7. Thereby, the optometry apparatus position detection unit 111 detects position information when the subjective optometry apparatus 4 is moved to the use state shown in FIG.

(Movement amount calculation unit)
The movement amount calculation unit 113 includes the chair 3 for the subject and the target presentation device 5 that are necessary for arranging the subject chair 3, the subjective optometry device 4, and the target presentation device 5 in a straight line. A process of calculating the movement amount is executed. The movement amount calculation unit 113 constitutes “straight line calculation means” and “deviation calculation means” of the present invention.

As an example of calculation processing by the movement amount calculation unit 113, first, the position information (x ₁₀ ) of the subjective optometry apparatus 4 acquired by the optometry apparatus position detection unit 111, as in the movement amount calculation unit 84 of the first embodiment. , compared to the x-coordinate _{x 10} in _{y 10),} and a x-coordinate _{x 20} location information of the patient chair 3 held in the information storage unit _{112 (x 20, y 20)} , given between them When there is a difference greater than or equal to the value, the x-coordinate of the subjective optometry apparatus 4 is matched with the subject's chair 3 (or the x-coordinate of the subject's chair 3 is matched with the subjective optometry apparatus 4). The amount x ₂₀ −x ₁₀ (or x ₁₀ −x ₂₀ ) of movement of the subjective optometry apparatus 4 in the x direction is obtained. As a result, the subjective optometry apparatus 4 is arranged in front of the subject chair 3.

Next, with respect to the position information (x ₃₀ , y ₃₀ ) of the optotype presenting apparatus 5 held in the information storage unit 112, the amount of movement in the x direction for matching the x coordinate x ₃₀ to the subject chair 3 seek x ₂₀ -x _30. As described above, the subjective optometry apparatus 4 and the target presentation apparatus 5 for arranging the subject chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 on a straight line (on a straight line parallel to the y axis). The amount of movement is obtained.

Here, when the difference between the y coordinate y ₁₀ of the subjective optometry apparatus 4 and the y coordinate y ₃₀ of the visual target presentation apparatus 5 does not coincide with the optometric distance D, the subjective expression is performed in the same manner as in the first embodiment. The y coordinate of the optometry apparatus 4 and / or the target presentation apparatus 5 is changed.

(Linked arm drive)
The connection arm drive unit 114 rotates the connection arm 36 in the horizontal direction around the end on the rotation mechanism unit 35 side, and rotates the connection arm 36 and the subject chair 3 along a circular orbit. Let The connecting arm drive unit 114 includes, for example, a stepping motor provided inside the rotation mechanism unit 35.

  The “arranging unit” referred to in the present invention includes the movement amount calculation unit 113.

[Processing procedure]
The processing procedure of the visual function inspection system 100 having the above configuration will be described along the flow of inspection. The flowchart shown in FIG. 10 represents an example of the flow of inspection by the visual function inspection system 100.

  Prior to the start of the inspection, the visual function inspection system 100 is in the housed state of FIG. 1 (S20). The examiner manually moves the subjective optometry apparatus 4 from the storage position to an appropriate position (S21).

  The optometry apparatus position detection unit 111 that has received the predetermined detection start request acquires the position information of the subjective optometry apparatus 4 (S22). The acquired position information is sent to the control unit 110 and stored in the information storage unit 112, for example.

  The control unit 110 acquires position information of the subject chair 3 and the target presentation device 5 by an encoder or the like and stores the acquired information in the information storage unit 112 (S23). At this time, the subject chair 3 may be in the housed state as shown in FIG. 2 or in the used state as shown in FIG.

  Based on the position information of the subjective optometry apparatus 4 acquired in step S22 and the position information of the subject's chair 3 and the target presentation apparatus 5 acquired in step S23, the movement amount calculation unit 113 is controlled. The movement amount along the arc-shaped trajectory of the examiner's chair 3, the movement amount (movement distance) along the rail of the target presentation device 5, and the rotation angle of the target presentation device 5 are calculated (S <b> 24). ).

  The control unit 110 converts each calculation result by the movement amount calculation unit 113 into an electric signal such as a pulse signal, and transmits an electric signal corresponding to the movement amount along the arcuate locus of the subject chair 3 to the connecting arm. An electrical signal that is transmitted to the drive unit 114 and that corresponds to the amount of movement along the rail of the target presentation device 5 is transmitted to the target presentation device drive unit 115, and an electrical signal that corresponds to the rotation angle of the target presentation device 5 Is transmitted to the target presentation device rotation unit 116 (S25).

  The connection arm driving unit 114 receives an electrical signal corresponding to the movement amount along the arcuate locus of the subject chair 3 and rotates the connection arm 36 by an angle corresponding to the movement amount. The subject chair 3 is moved (S26).

  The optotype presenting apparatus driving unit 115 receives the electrical signal corresponding to the movement amount along the rail of the optotype presenting apparatus 5 and moves the optotype presenting apparatus 5 along the rail by the movement distance (S27).

  The optotype presenting apparatus rotating unit 116 receives an electric signal corresponding to the rotation angle of the optotype presenting apparatus 5 and rotates the optotype presenting apparatus 5 by the rotation angle, so that the screen 51 is directed to the subject. Directly face each other (S28).

  By the above processing, the subject chair 3, the subjective optometry apparatus 4, and the target presentation apparatus 5 are arranged in a straight line, and the screen 51 of the target presentation apparatus 5 is also directly facing the subject. Be placed. In the same manner as in the first embodiment, it is also possible to perform a process in which the front surface of the subjective optometry apparatus 4 faces the subject.

  When the movement of the subject chair 3 and the target presentation device 5 is completed, the subject is seated on the subject chair 3 and the examination is started (S29).

[effect]
As described above, the visual function testing system 100 according to the present embodiment detects the position of the subjective optometry apparatus 4 that has been moved to the use position, and based on the detection result, the subject chair 3 and the target presentation apparatus. 5 is moved so that the subject's chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 are automatically arranged on a straight line. Get smaller. Moreover, since the preparation time for inspection is shortened, the inspection can be shortened.

<Third Embodiment>
A third embodiment of the visual function inspection system according to the present invention will be described. The visual function inspection system of the present embodiment is configured to move the subject chair and the subjective optometry apparatus in accordance with the position of the optotype presenting apparatus.

  FIG. 11 illustrates an example of a configuration of a control system of the visual function inspection system 200 according to the present embodiment. The visual function inspection system 200 has the same external configuration as the first and second embodiments. In the following, reference is made to the drawings in the first embodiment.

  The visual function testing system 200 includes a control unit 210 similar to the control unit 80 of the first embodiment, a target presentation device position detection unit 211, and an information storage unit similar to the information storage unit 83 of the first embodiment. 212, a movement amount calculation unit 213 similar to the movement amount calculation unit 84 of the first embodiment, a support arm drive unit 214 similar to the support arm drive unit 85 of the first embodiment, and the first embodiment. The optometry device rotation unit 215 is the same as the optometry device rotation unit 86, and the connection arm drive unit 216 is the same as the connection arm drive unit 114 of the second embodiment.

  Note that the information storage unit 112 holds the position information of the subject chair 3 and the subjective optometry apparatus 4 acquired by the method according to the first embodiment. In addition, the “arranging unit” referred to in the present invention includes a movement amount calculation unit 213.

(Target presentation device position detector)
The optotype presenting apparatus position detection unit 211 detects the current position of the optotype presenting apparatus 5, acquires position information indicating the position, and operates to output the position information to the control unit 210.

  The target presentation device position detection unit 211 includes, for example, a position sensor that detects the position of the target presentation device 5 on the rail described above. Moreover, you may have an encoder etc. which detect the rotation angle of the horizontal direction of the optotype presentation apparatus 5. FIG.

  The optotype presenting apparatus position detection unit 211 acquires position information of the optotype presenting apparatus 5 in response to a predetermined detection start request. The detection start request is made by operating the controller 7 or the like, for example.

(Movement amount calculation unit)
The movement amount calculation unit 213 includes the chair 3 for the subject and the subjective optometry apparatus 4 necessary for arranging the subject's chair 3, the subjective optometry apparatus 4, and the target presentation apparatus 5 in a straight line. A process of calculating the movement amount is executed. The movement amount calculation unit 213 constitutes “straight line calculation means” and “deviation calculation means” of the present invention.

As an example of the calculation process performed by the movement amount calculation unit 213, first, as with the movement amount calculation unit 84 of the first embodiment, first, the position information of the target presentation device 5 acquired by the target presentation device position detection unit 211 ( compared to x _100, x-coordinate _{x 100} of _{y 100),} held in the information storage unit 212 and the x-coordinate _{x 110} of the position information of the subject chair _{3 (x 110, y 110)} , between them When there is a difference of a predetermined value or more, the x coordinate of the target presentation device 5 is matched with the subject chair 3 (or the x coordinate of the subject chair 3 is matched with the target presentation device 5). ) To determine the movement amount x ₁₁₀ −x ₁₀₀ (or x ₁₀₀ −x ₁₁₀ ) of the subjective optometry apparatus 4 in the x direction. Thereby, the optotype presenting device 5 is arranged in front of the subject chair 3.

Next, regarding the positional information (x ₁₂₀ , y ₁₂₀ ) of the subjective optometry apparatus 4 held in the information storage unit 212, the amount of movement in the x direction for matching the x coordinate x ₁₂₀ to the subject chair 3. Find x ₁₁₀ −x ₁₂₀ . As described above, the subject's chair 3 and the subjective optometry apparatus 4 for arranging the subject's chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 on a straight line (on a straight line parallel to the y axis). The amount of movement is obtained.

Here, when the difference between the y-coordinate y ₁₀₀ y-coordinate y ₁₂₀ and target display device 5 of the subjective-type optometric apparatus 4 does not match the eye distance D, as in the first embodiment, subjective The y coordinate of the optometry apparatus 4 and / or the target presentation apparatus 5 is changed.

[Processing procedure]
The processing procedure of the visual function inspection system 200 having the above configuration will be described along the flow of inspection. The flowchart shown in FIG. 12 represents an example of the flow of inspection by the visual function inspection system 200.

  Prior to the start of the inspection, the visual function inspection system 200 is in the housed state of FIG. 1 (S30). The examiner moves the target presentation device 5 to an appropriate position as necessary (S31). The target presentation device 5 is moved by operating the controller 7, for example.

  Receiving the predetermined detection start request, the optotype presenting apparatus position detecting unit 211 acquires position information of the optotype presenting apparatus 5 (S32). The acquired position information is sent to the control unit 210 and stored in the information storage unit 212, for example.

  The control unit 210 acquires position information of the subject chair 3 and the subjective optometry apparatus 4 using an encoder or the like and stores the acquired position information in the information storage unit 212 (S33). At this time, the subject's chair 3 and the subjective optometry apparatus 4 may be stored as shown in FIG. 2 or used as shown in FIG.

  Based on the position information of the target presentation device 5 acquired in step S32 and the position information of the subject chair 3 and the subjective optometry apparatus 4 acquired in step S33, the movement amount calculation unit 213 The amount of movement along the arcuate locus of the examiner's chair 3, the amount of movement along the arcuate locus of the subjective optometry apparatus 4, and the rotation angle of the subjective optometry apparatus 4 with respect to the second arm 27. Calculate (S34).

  The control unit 210 converts each calculation result by the movement amount calculation unit 213 into an electric signal such as a pulse signal, and transmits an electric signal corresponding to the movement amount along the arcuate locus of the subject chair 3 to the connecting arm. The electric signal corresponding to the amount of movement along the arcuate trajectory of the subjective optometry apparatus 4 is transmitted to the drive unit 216 and transmitted to the support arm drive unit 214, and the subjective optometry apparatus 4 is rotated with respect to the second arm 27. An electrical signal corresponding to the angle is transmitted to the optometer rotation unit 215 (S35).

  The connection arm drive unit 216 receives an electrical signal corresponding to the movement amount along the arcuate locus of the subject chair 3 and rotates the connection arm 36 by an angle corresponding to the movement amount. The subject chair 3 is moved (S36).

  The support arm driving unit 214 receives an electrical signal corresponding to the movement amount along the arcuate locus of the subjective optometry apparatus 4 and rotates the first arm 26 by an angle corresponding to the movement amount. The subjective optometry apparatus 4 is moved (S37).

  The optometry device rotation unit 215 receives an electrical signal corresponding to the rotation angle of the subjective optometry device 4 with respect to the second arm 27, rotates the subjective optometry device 4 by the rotation angle, and covers the front surface thereof. The examiner is directly faced (S38).

  Through the above processing, the subject chair 3, the subjective optometry apparatus 4 and the target presentation apparatus 5 are arranged in a straight line, and the front surface of the subjective optometry apparatus 4 and the screen 51 of the target presentation apparatus 5 are arranged. It is placed facing the subject.

  When the movement of the subject chair 3 and the subjective optometry apparatus 4 is completed, the subject is seated on the subject chair 3 and the examination is started (S39).

[effect]
As described above, the visual function testing system 200 according to the present embodiment detects the position of the visual target presentation device 5, moves the subject chair 3 and the subjective optometry device 4 based on the detection result, Since the subject chair 3, the subjective optometry apparatus 4, and the optotype presenting apparatus 5 act so as to be automatically arranged in a straight line, the labor for arranging them at appropriate positions in the examination is reduced. Moreover, since the preparation time for inspection is shortened, the inspection can be shortened.

<Modification>
The configuration detailed above is merely an example for implementing the visual function inspection system according to the present invention. Therefore, various modifications can be made within the scope of the present invention.

  For example, after the position of the subject's chair 3 is determined, that is, after the subject's chair 3, the subjective optometry apparatus 4 and the target presentation device 5 are arranged in a straight line, the subject's chair 3 is moved. Chair straight line moving means that can move in the direction of the straight line (the y direction described above or a direction oblique to the y direction) can be further provided. As the chair linear movement means, a slider mechanism that linearly moves the seat portion 31 with respect to the support leg 33 can be used. At this time, it is desirable that the seat 31 can be slidable in response to a predetermined operation on the controller 7 and the like after the position of the subject chair 3 is determined. Thereby, it is possible to cope with a case where the subject chair 3 is moved back and forth after the position is determined in consideration of the posture of the subject. Moreover, it is desirable to make it the structure which makes the sliding direction of the seating part 31 correspond to the said linear direction.

  Further, the turning radius of the subject chair 3 can be changed by making the connecting arm 36 that connects the subject chair 3 to the optometry table 2 extendable or refractable. You may do it. Specifically, it is possible to apply a connecting arm 36 in which a plurality of arms are connected to change the length of the connecting arm 36 or to bend it. Thereby, it is possible to cope with the case where the subject's body is very large.

  In addition, regarding a chair (examiner's chair) on which an inspector is seated at the time of inspection, considering the space saving of the inspection room, the same as the inspector's chair coupling mechanism and the coupling arm 36 similar to the rotation mechanism unit 35. The examiner's chair connecting arm can be connected to the optometry table 2, and the examiner's chair can be stored under the top plate 24 of the optometry table 2. In that case, the height of the seating portion 31 of the subject chair 3 and the height of the seating portion of the examiner's chair at the time of storage are configured to be different from each other, and the seating portions are stored in a state where the seating portions overlap each other. It is desirable. Thereby, even if the size of the optometry table 2 is small, two chairs can be suitably accommodated.

  Further, when a subject chair having a different form from the above-described embodiment, such as a chair with a normal caster, is used, it is possible to employ the following chair position detecting means. First, a mat such as a carpet is laid in an area where the subject chair is moved, and a pressure sensor is provided under the carpet. For example, a plurality of pressure sensors are provided, and it is possible to determine which position of the pressure sensor outputs the detection signal. When the subject chair is moved, a pressure sensor that detects the pressure of the caster outputs a detection signal to a computer or the like. Usually, a plurality of casters are provided. The computer or the like obtains the positional relationship of the plurality of pressure sensors that output the detection signals, and uses, for example, the center of gravity of the plurality of positions as the position of the subject chair.

  Further, one or more casters may be provided on the subject chair connected to the optometry table. Thereby, for example, the position of the subject chair once the position is determined can be adjusted. Further, the caster may be configured to be always grounded, or may be configured to be grounded during use and not grounded during storage as shown in FIGS. Further, when this caster is always grounded, it is possible to provide a spring member, a hydraulic mechanism, or the like as shown in FIG. 3 so that the seating portion sinks when the subject is seated.

  When using the subject chair with casters as described above, a stopper that appropriately prohibits movement by the casters may be provided. The stopper may be configured to be manually switched ON / OFF, or may be configured to be electrically switched by operating a controller or the like.

  In addition, when using a subject chair with a backrest, a subject detection unit can be provided on the backrest. The subject detection unit can be arranged at an arbitrary position where it can be detected that the subject is seated.

  The connecting arm 36 for connecting the subject's chair 3 shown in FIGS. 1 and 2 to the optometry table 2 has a horizontal portion that is linearly configured. A bent connecting arm may be employed so that it does not come into contact with or collide with the side surfaces of the first support portion 21 and the second support portion 22 when stored underneath.

  The above-described modifications relating to the subject chair can also be applied to the examiner chair.

  In addition, the “position information” in each of the above embodiments is formed as a coordinate value in a preset coordinate system, but is not limited thereto. For example, coordinate values in a coordinate system set with any one of the subject chair 3, the subjective optometry apparatus 4, and the target presentation apparatus 5 as a reference (that is, the origin) can be applied. At that time, when the reference chair or device moves, the origin is moved along with the movement. Further, when there is a fixedly arranged chair 3 for the subject, the subjective optometry apparatus 4 and the target presentation apparatus 5, a coordinate system based on the fixedly arranged chair or apparatus. Can be set. As described above, the “position information” may be in any form as long as it can express the relative positional relationship among the subject chair 3, the subjective optometry apparatus 4, and the target presentation apparatus 5.

It is a schematic perspective view showing the appearance composition of a 1st embodiment of a visual function inspection system concerning the present invention. It is a schematic perspective view showing the appearance composition of a 1st embodiment of a visual function inspection system concerning the present invention. It is a schematic side view showing the appearance composition of a subject's chair of a visual function inspection system concerning the present invention. It is a schematic perspective view showing the external appearance structure of the controller of the visual function inspection system which concerns on this invention. It is a block diagram showing the structure of the control system of 1st Embodiment of the visual function inspection system which concerns on this invention. It is a schematic top view for demonstrating the state of the rotation operation | movement of the 2nd arm of the visual function inspection system which concerns on this invention, and a subjective optometry apparatus. FIG. 6A shows a state when the second arm is positioned parallel to the x direction. FIG. 6B shows a state when the second arm is rotated beyond a position parallel to the x direction. FIG. 6C shows a state when the second arm is not rotated to a position parallel to the x direction. It is a schematic top view for demonstrating the state of rotation operation | movement with respect to the 2nd arm of the subjective optometry apparatus of the visual function inspection system which concerns on this invention. FIG. 7A shows a state when the second arm is positioned in parallel to the x direction. FIG. 7B shows a state when the second arm is rotated beyond a position parallel to the x direction. FIG. 7C shows a state where the second arm is not rotated to a position parallel to the x direction. It is a flowchart showing the test | inspection procedure using 1st Embodiment of the visual function test | inspection system which concerns on this invention. It is a block diagram showing the structure of the control system of 2nd Embodiment of the visual function inspection system which concerns on this invention. It is a flowchart showing the test | inspection procedure using 2nd Embodiment of the visual function test | inspection system which concerns on this invention. It is a block diagram showing the structure of the control system of 3rd Embodiment of the visual function inspection system which concerns on this invention. It is a flowchart showing the test | inspection procedure using 2nd Embodiment of the visual function test | inspection system which concerns on this invention.

Explanation of symbols

1, 100, 200 Visual function test system 2 Optometry table 21 First support portion 21A Standing portion 21a, 21b, 21c Foot 21d Mounting member 22 Second support portion 23 Drawer portion 23a Drawer 24 Top plate 25 Arm holding portion 26 First 1 arm 27 2nd arm 27a, 27b rotating shaft 28 handle 29 switch 3 subject chair 31 seating portion 31A cushion 31B mounting frame 32 tubular member 33 support leg 34 grounding portion 35 rotating mechanism portion 36 connecting arm 37 spring member 4 Subjective optometry apparatus 4L, 4R optometry unit 41 drive mechanism section 42L, 42R optometry window 43 forehead support 5 target presentation apparatus 51 screen 6 mounting table 61 base 62 standing section 63 top panel 7 controller 71 operation panel 72 display panel 80, 110, 210 Control unit 81 Subject detection unit 82 Chair position Position detection unit 83, 112, 212 Information storage unit 84, 113, 213 Movement amount calculation unit 85, 214 Support arm drive unit 86, 215 Optometry device rotation unit 87, 115 Target presentation device drive unit 88, 116 Target presentation Device rotation unit 111 Optometry device position detection unit 114, 216 Connecting arm drive unit 211 Target presentation device position detection unit

Claims (5)

A movable subject chair, a movable subjective optometry device that imparts refractive power to the subject's subject eye seated on the subject chair, and the subjective optometry device A visual target presenting device that is arranged on the opposite side of the subject chair and presents a visual target toward the eye to be examined, wherein the visual target is visually recognized by the eye to which the refractive power is applied. A visual function test system for testing the visual function of the eye to be inspected,
Even if the position of any of the three of the subjective optometry apparatus, the subject chair, and the optotype presenting apparatus is changed, there is provided arrangement means for arranging the three in a substantially straight line. A visual function inspection system characterized by that. An optometry table that supports the subjective optometry apparatus;
A connecting arm having one end connected to the patient chair;
A connection mechanism fixed to the optometry table and holding the other end of the connection arm so that the connection arm can be rotated in a horizontal direction;
Further comprising
The subject chair can be moved to a storage position under the top plate of the optometry table by the coupling mechanism.
The visual function inspection system according to claim 1. The arrangement means includes
Chair position detecting means for acquiring position information of the subject chair;
Optometry device moving means for moving the subjective optometry device;
A target presentation device moving means for moving the target presentation device;
With
The optometry apparatus moving means moves the subjective optometry apparatus based on the acquired position information of the subject chair, and the optotype presenting apparatus moving means is configured to acquire the acquired test object. By moving the target presentation device based on the position information of the chair for the person, the three are arranged in a substantially straight line,
The visual function inspection system according to claim 1, wherein the visual function inspection system is provided. The arrangement means includes
Straight line calculating means for obtaining a straight line connecting any two positions of the subjective optometry apparatus, the subject chair, and the optotype presenting apparatus;
A deviation calculating means for calculating a deviation of the remaining one of the three positions with respect to the obtained straight line;
Including
By moving the remaining one in accordance with the calculated deviation, the three are arranged in a substantially straight line;
The visual function testing system according to any one of claims 1 to 3, wherein The examiner's chair on which the examiner sits,
An examiner's chair connecting arm having one end connected to the examiner's chair;
An examiner chair coupling mechanism that is fixed to the optometry table and holds the other end of the examiner coupling arm so that the examiner coupling arm can be rotated in a horizontal direction;
Further comprising
The examiner's chair is movable to a storage position below the top plate of the optometry table by the examiner's chair connection mechanism.
The visual function inspection system according to claim 2.

Images