JP2012090956A - Visual target presenting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote controller for an ophthalmic apparatus such as a visual target presenting device which can easily grasp (identify) a cause of a problem such as an error regarding the remote controller operation.SOLUTION: The remote controller for the ophthalmic apparatus for operating the ophthalmic apparatus comprises: a control part for generating a signal for operating the ophthalmic apparatus; a transmitting part for transmitting the signal generated by the control part; a receiving part for receiving a signal whose signal characteristic coincides with the signal transmitted from the transmitting part; and a receiving state display part for displaying the receiving state of the receiving part.

Description

  The present invention relates to an optotype presenting apparatus that presents an optotype for examination to a subject's eye.

  There is known an optotype presenting apparatus that presents a visual test for visual acuity such as a Landolt ring optotype on a subject's eye (for example, see Patent Document 1). In such an apparatus, in recent years, a liquid crystal display or the like has been used as a visual target presenting unit, and various visual targets are presented to the subject's eye by displaying the visual target on the display. A large number of target data is stored in a memory of the apparatus, and one or a plurality of target data is read from the memory by a switch operation (signal from the remote controller) of a remote controller (hereinafter referred to as a remote controller). The target data is displayed on the display.

  There has been known an optotype presenting apparatus that presents a visual test for visual acuity such as a Landolt ring optotype on a subject's eye (for example, see Patent Documents 1 and 2). Such an apparatus includes a remote controller (hereinafter referred to as a remote controller) for performing an operation such as switching a target to be presented. For example, in the apparatus of Patent Document 1, a liquid crystal display or the like is used as a target presentation unit, and various targets are presented to the subject's eyes by displaying the target on the display. A large number of target data is stored in a memory of the device, and one or a plurality of target data is read from the memory by a switch operation (signal from the remote control) of the remote controller, and the target of the read data is It appears on the display.

  Further, in the apparatus of Patent Document 2, a large number of targets are arranged (formed) on a rotatable disc, and various targets are presented to the subject's eye by illuminating the targets on the disc from behind. Has been. In such an apparatus, the disc is rotated by a switch operation of the remote controller (signal from the remote controller), and the presented target is switched.

JP 2007-296100 A JP 2010-82253 A

  In such a device, regarding the operation error related to the wireless remote control operation, there is a problem of the remote control itself (remote control failure, remote control battery exhaustion, etc.) and the target presentation device itself is not really broken. There is an operation error of the apparatus due to reception of a signal (including noise light, disturbance light, etc. from the room illumination lamp) other than the corresponding remote controller by the receiving unit of the apparatus main body. In addition, since a plurality of optotype presenting apparatus main bodies may be arranged side by side at a spectacle store, an ophthalmic clinic, or the like, signal crosstalk (crosstalk) from the remote controller is likely to occur. As described above, problems such as errors related to wireless remote control operations have many causes and are not easy to identify.

  An object of the present invention is to provide an optotype presenting apparatus that can easily grasp (specify) the cause of a problem such as an error related to a remote control operation.

In order to solve the above problems, the present invention is characterized by having the following configuration.
(1) In an optotype presenting apparatus for presenting an optotype for examination to a subject's eye
An optotype presenting unit for presenting the optotype to the subject's eye;
A receiver for receiving a signal from a wireless controller;
A control unit that presents the optotype to the optotype presenting unit based on a signal from the receiving unit;
A mode switch for setting a reception state display mode for displaying the reception state of the reception unit;
A reception state display unit for displaying a reception state of the reception unit in the reception state display mode;
It is characterized by comprising.
(2) In the target presentation device of (1),
The reception state display unit is characterized in that the control unit displays on the visual target presenting unit based on a setting signal of the reception state display mode by the mode switch.
(3) In an optotype presenting apparatus having an apparatus main body having an optotype presenting unit for presenting an optotype for examination to a subject's eye, and a wireless remote controller for operating the apparatus main body,
The remote controller is
A control unit for generating a signal for operating the apparatus body;
A transmission unit for transmitting the signal generated by the control unit;
A receiving unit that receives a signal having a signal characteristic that matches the signal transmitted from the transmitting unit;
A reception state display unit for displaying a reception state of the reception unit;
It is characterized by providing.
(4) In the target presentation device of (3),
The remote controller includes a mode switch for setting a reception state display mode for displaying a reception state of the reception unit,
The reception status display unit displays the reception status of the reception unit in the reception status display mode.
(5) In the optotype presenting device of (4),
The remote controller includes a display for displaying information based on a signal for operating the apparatus main body,
The reception state display unit is configured to cause the display to display on the display based on a setting signal of the reception state display mode by the mode switch.
It is characterized by that.
(6) A device main body having a target presentation unit capable of switching and presenting a test target to the subject's eye, and a remote controller having a transmission unit for transmitting a target switching signal wirelessly. In the optotype presenting apparatus, the apparatus main body is provided with a first receiving unit that receives a switching signal from the remote controller, and causes the optotype presenting unit to present a target based on the switching signal transmitted from the remote controller. ,
A reception state confirmation unit having a second reception unit capable of receiving a signal having the same wavelength characteristic as the switching signal transmitted from the remote controller and having a reception state display unit for displaying a reception state of the second reception unit; It is characterized by that.
(7) In the target presentation device of (6),
The reception state confirmation unit is provided in at least one of the apparatus main body and the remote controller.
(8) In the visual target presenting device according to (6),
The second receiving unit is also used as the first receiving unit, and the reception status display unit is provided in the apparatus body.
The apparatus main body includes mode setting means for setting an operation mode of the second reception unit to a reception state display mode for displaying a reception state on the reception state display unit.
(9) In the target presentation device of (6),
The reception state confirmation unit is provided in the remote controller,
The remote controller includes mode setting means for setting an operation mode of the second receiving unit to a reception state display mode for displaying a reception state on the reception state display unit.
(10) In the visual target presenting device according to (5),
The reception state confirmation unit is provided in both the apparatus main body and the remote controller,
The apparatus main body is
A second transmitter for transmitting a reply signal indicating that the target has been switched wirelessly to the remote controller for bidirectional communication with the remote controller;
A transmission state display unit that displays a transmission state of the second transmission unit, and the remote controller includes:
A third receiving unit for receiving a reply signal, the third receiving unit also serving as the second receiving unit;
It is characterized by that.

  According to the present invention, it is possible to easily grasp (identify) the cause of a problem such as an error related to a remote control operation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic external view showing the configuration of the optotype presenting apparatus. The optotype presenting apparatus 100 includes a remote controller 20 for transmitting an optotype switching signal to the apparatus main body 1 for presenting the optotype. On the front face of the housing 2 of the optotype presenting apparatus 1, an optotype presenting unit 3 is arranged. The visual target presenting unit 3 can display a large visual test target 3A having a visual acuity value of 0.1 or the like when the distance (inspection distance) to the subject is a long distance (for example, 5 m). It has a large screen. In addition, the screen of the target presentation unit 3 has a resolution capable of displaying a small eyesight test target 3A having a visual acuity value of 2.0 or the like when the inspection distance is a near distance (for example, 3 m). ing. The target presented in the target presenting unit 3 is switched based on a signal from a wireless type remote controller (hereinafter referred to as remote controller) 20 which is a target selection unit.

  A transmission / reception unit (receiver) that receives infrared light (signal) as a target switching signal from the remote controller 20 and transmits infrared light (signal) to the remote controller 20 below the front surface of the housing 2 of the apparatus body 1. The second transmission unit / reception unit serving as the first reception unit and the second reception unit) 5 is disposed. A pilot lamp 6 indicating the operating state of the apparatus main body 1 is disposed below the front surface of the housing 2. The pilot lamp 6 is turned on when the device 1 is turned on, and turned off when the device 1 is turned off. Further, the pilot lamp 6 is turned off during the examination (indicating the target) so as not to irritate the eye of the subject even when the apparatus 1 is powered on.

  A function switch 7 is disposed below the housing 2 as an operation unit for setting various parameters such as an inspection distance. By operating the function switch 7, a setup screen (to be described later) for setting parameters of the apparatus (screen brightness, screen color balance, etc.) is displayed on the target presentation unit 3. The function switch 7 is a device for selecting a transmission / reception state display mode (described later) for displaying a reception state of the signal from the remote controller 20 at the transmission / reception unit 5 and a transmission (reply) state of the signal to the remote control 20. Also serves as a mode switch (mode setting means) on the main body 1 side. The signal transmitted at this time is a reply signal. The function switch 7 has a function of setting the operation mode of the apparatus body 1 to the transmission / reception state display mode.

FIG. 2 is a schematic block diagram showing the configuration of the optotype presenting unit 3 and the control system of the apparatus. The color liquid crystal display 30 and the transmission / reception unit 5 which are the target presentation unit 3 are connected to a control unit (target presentation control unit) 10 that controls and controls the entire apparatus 1.
A pilot lamp 6 and a function switch 7 are also connected to the arithmetic control unit 10. The control unit 10 includes a decoder circuit that decodes a signal from the remote controller 20 (a signal from the transmission / reception unit 5), an encoder circuit that generates a signal to the remote controller 20, and the like. When a signal for switching (selecting) the target from the remote controller 20 is input via the transmission / reception unit 5, the control unit 10 controls the display of each pixel 31 of the display 30. When the switching of the target is completed, the control unit 10 generates a reply signal indicating that the switching of the target has been completed for bidirectional communication with the remote controller 20, and returns the reply signal to the remote controller 20 via the transmission / reception unit 5. Send (reply) the signal. Reply signal The control unit 28 that controls and controls the remote controller 20 ignores the next operation by the various switches of the remote controller 20 until the signal from the transmission / reception unit 5 is received. Therefore, the optotype presenting apparatus 1 and the remote controller 20 are configured to be operated by two-way communication (described later).

  In addition, a memory 12 is connected to the control unit 10. The memory 12 stores image data of various visual acuity test targets such as Landolt's ring target, hiragana target, E target, etc., every predetermined step from visual acuity value 0.04 to visual acuity value 2.0. ing. When the target switching signal (target selection signal) from the remote controller 20 is input via the transmission / reception unit 5, the control unit 10 displays the target on the display 30 according to the display program.

  The transmission / reception unit 5 of this embodiment includes a light receiving element (receiving element) 51 that receives (receives) infrared light (signal), and a light emitting element (transmitting element) 52 that emits (transmits) infrared light (signal). , And a filter 53 that also serves as a window (transmission / reception window) that transmits infrared light. The light receiving element 51 and the light emitting element 52 are connected to the control unit 10. As the light receiving element 51, a photodiode or the like capable of receiving (receiving) an optical signal over a wide wavelength range is used. On the other hand, the light emitting element 52 is an LED (light emitting diode) capable of emitting (transmitting) infrared light. The filter 53 is disposed on the surface of the housing 2 at a certain distance from the light receiving element 51 and the light emitting element 52. The filter 53 has a role of a band pass filter that limits the wavelength of light incident on the light receiving element 51. The filter 53 has a characteristic that allows a switching signal from the remote controller 20 to pass therethrough and suppresses transmission of light of other wavelengths. For example, light having a wavelength of about several tens of nanometers with respect to the wavelength of the switching signal is transmitted, and the other wavelengths are blocked. The filter 53 transmits an optical signal emitted from the light emitting element 52.

  The distance between the light receiving element 51 and the filter 53 is determined so as to limit the light receiving range (reception range) of the light receiving element 51. That is, in the transmission / reception unit 5, the incident angle of the optical signal to the light receiving element 51 is limited within a predetermined angle. Similarly, the distance between the light emitting element 52 and the filter 53 is also determined so as to limit the light emission range (transmission range) of the light emitting element 52. In other words, the transmission / reception unit 5 has an emission angle of an optical signal from the light emitting element 52 limited to a predetermined angle. The predetermined angle is, for example, within ± 30 degrees in the horizontal direction.

  In the apparatus main body 1, the transmission / reception unit 5, the display 30 (target presentation unit 3), and the control unit 10 constitute a reception state confirmation unit that confirms the reception state of a signal from the remote controller 20. In the present embodiment, the apparatus main body 1 further has a function of confirming a state in which an optical signal is transmitted from the apparatus main body 1. The apparatus main body 1 includes a transmission / reception state confirmation unit for confirming the transmission / reception state.

  FIG. 3 is an external view showing the configuration of the remote controller 20. On the front surface of the remote controller 20, a transmission / reception unit (a reception unit serving as both a transmission unit, a second reception unit, and a third reception unit) 21 that transmits and receives an optical signal is disposed. A monochrome liquid crystal display 22 that is an information display unit and a switch unit 23 are arranged on the upper surface of the remote controller 20. The switch unit 23 includes a switch 24 for selecting the type of a visual test for visual acuity such as a Landolt ring visual target, a hiragana visual target, an E visual target, and the visual acuity value of the visual acuity test target from 0.04 to 2. A switch panel 25 on which a large number of switches for switching (selecting) between 0 and 0 are displayed, a one-character target (one target is presented on the screen) or a multi-character target (a plurality of targets on the screen) A switch 26 for selecting whether to display the target), a switch 27a for switching the direction of the one-character target such as the Landolt ring target to the right, and the direction of the one-character target to the left. Various switches such as a switch 27b, a switch 27c for switching the direction of the one-character target upward, and a switch 27d for switching the direction of the one-character target downward are arranged. In addition, a pilot lamp 20a for notifying that the power source of the remote controller 20 is turned on is disposed below the upper surface of the remote controller 20. Note that the presence or absence of power-on to the remote controller 20 may be notified by the presence or absence of display on the display 22.

  The control unit 28 of the remote controller 20 includes an encoder circuit that generates a signal to the apparatus body 1 (transmission / reception unit 5), a decoder circuit that decodes a signal from the apparatus 1 (transmission / reception unit 5), and the like. It has. A memory 29 is connected to the control unit 28. The memory 29 stores various parameters of the remote controller 20, a program for operating the remote controller 20, a program for a transmission / reception state display mode (described later), and the like.

  The transmission / reception unit 21 includes a light emitting element (transmission element) 21a that emits (transmits) infrared light (signal), a light receiving element (reception element) 21b that receives (receives) infrared light (signal), and a window (transmission / reception). And a protective cover 21c that also serves as a window. For the light emitting element 21a, an LED (light emitting diode) capable of emitting infrared light is used. On the other hand, a photodiode 21 or the like capable of receiving an optical signal over a wide wavelength range is used for the light receiving element 21b. The light receiving element 21b is an element that can receive light (light signal) having the same signal characteristics as the optical signal received by the light receiving element 51. Here, it is assumed that light having the same wavelength characteristic of the optical signal received by the light receiving element 51 can be received. In addition, the transmission / reception unit 21 has an emission angle of an optical signal from the light emitting element 21a limited to a predetermined angle. Similarly, in the transmission / reception unit 21, the incident angle of the optical signal to the light receiving element 21b is limited within a predetermined angle.

  It should be noted that the light emitting element 21a and the light emitting element 52 are common elements (same parts) so that the apparatus body 1 and the remote controller 20 can easily perform bidirectional communication (so that signals can be easily transmitted and received). Is preferred. Similarly, it is preferable that the light receiving element 21b and the light receiving element 51 are a common element. The protective cover 21c and the filter 53 only need to have an optical characteristic (filter characteristic) that transmits the wavelength of an optical signal used in the apparatus main body 1 and the remote controller 20. The light receiving characteristic of the transmission / reception unit 21 may be substantially the same as the light reception characteristic of the transmission / reception unit 5 by a combination of the protective cover 21c and the light receiving element 21b.

  The remote controller 20 is integrated and controlled by the control unit 28, and the transmission / reception unit 21 (the light emitting element 21 a and the light receiving element 21 b), the display 22, the switch unit 23, and the memory 29 are connected to the control unit 28. When various switches are pressed, the control unit 28 generates a code corresponding to the switch, and causes the transmitter / receiver 21 (light emitting element 21a) to emit (transmit) the encoded optical signal. At this time, the control unit 28 does not accept the next operation by various switches (ignoring the input by the switches). When the control unit 28 receives the return signal from the device 1 (transmission / reception unit 5) via the transmission / reception unit 21 (light receiving element 21b), the control unit 28 accepts (permits) the next operation by various switches.

  In the remote controller 20, the transmission / reception unit 21, the display 22, and the control unit 28 constitute a reception state confirmation unit that confirms the reception state of a signal having the same wavelength characteristic as the signal from the remote controller 20. In the present embodiment, the remote controller 20 further has a function of confirming a state in which an optical signal is transmitted from the remote controller 20. The remote controller 20 includes a transmission / reception state confirmation unit for confirming the transmission / reception state.

  The remote controller 20 of this embodiment has a function of setting the remote controller 20 to the transmission / reception state display mode by operating various switches. Specifically, when the switches 27a and 27b are simultaneously pressed for a long time (for example, pressed for 3 seconds), the control unit 28 transmits the reception status display unit and the transmission to the display 22 based on the input signals of the switches 27a and 27b. The transmission / reception state display unit 22a that also serves as the state display unit is displayed. Therefore, the switches 27a and 27b are mode switches (mode selection means) for setting the operation mode of the remote controller 20 to the transmission / reception state display mode for confirming the transmission / reception state of the transmission / reception unit 21. The display unit 22a displays a mark M1 that displays a reception state and a mark M2 that displays a transmission state. The mark M1 has a hollow circular shape, and the mark M2 has a circular shape with a size that fits within the mark M1. Thereby, two types of marks, a mark for displaying the reception state and a mark for displaying the transmission state, can be displayed at the same time in the display unit 22a, and the reception state and transmission state of the remote controller 20 can be easily grasped.

  Next, the setup screen displayed on the optotype presenting apparatus 1 will be described. When the predetermined function switch 7 is pressed (when a predetermined setting signal is input), the control unit 10 displays the setup screen 40 shown in FIG. 4 on the display 30 (target presentation unit 3). The setup screen 40 includes a setting unit 41 for setting / displaying various parameters of the apparatus main body 1 and a display unit 60 for displaying a transmission / reception state of the apparatus 1. The setting unit 41 is configured by arranging various setting fields for each item. As the setting unit 41, for example, a target setting field 42 for setting a target type, an inspection distance setting field 43 for setting an inspection distance, and a color setting for setting a color (color arrangement) of the display 30 Columns 44, etc. are provided. Selection of each item and change of the numerical value are performed by operating the function switch 7.

  In the target setting column 42, the type of target (particularly the target for eyesight test) to be used differently depending on the country, region, etc. is selected. In the inspection distance setting column 42, an inspection distance is selected. In this embodiment, it is possible to select every 0.5 m steps from 3.0 m to ˜60 m. In the color setting column 45, the red, green, and blue luminance values of the display 30 are adjusted with several hundred gradations, respectively, and the color of the display 30 is adjusted.

  In the display unit 60, when any signal is received by the transmission / reception unit 5, a mark M3 indicating a reception state is displayed. Further, when the control unit 10 transmits a signal via the transmission / reception unit 5, a mark M4 indicating a transmission state is displayed. In this embodiment, for easy confirmation, the mark M3 has the same shape as the mark M1, and the mark M4 has the same shape as the mark M2. The control unit 10 receives (detects) a signal from the light receiving element 51 (transmission / reception unit 5), displays the mark M3 on the display unit 60, and displays the display unit based on the signal to the light emitting element 52 (transmission / reception unit 5). The mark M4 is displayed at 60. Note that, similarly to the case of the remote controller 20 described later, the control unit 10 preferably updates the transmission / reception state over time and causes the display unit 60 to display it. For example, the display of the display unit 60 is sequentially updated at a time interval such that the transmission / reception state is recognized by the operator (examiner) in real time.

  Information on each item set on the setup screen 40 is stored in the memory 12 by operating the function switch 7. After the setting, the control unit 10 controls display on the display 30 based on the setting information stored in the memory 12.

  Thus, on the setup screen 40, various parameters of the apparatus 1 are set and displayed and the signal transmission / reception state is displayed.

  Next, the transmission / reception state display mode of this embodiment will be described. First, confirmation of the transmission / reception state using the remote controller 20 will be described, and next, confirmation of the transmission / reception state between the optotype presenting apparatus 1 and the remote controller 20 will be described.

  The reception state of the remote controller 20 refers to a state where the transmission / reception unit 21 is receiving a signal, and refers to a state where the light receiving element 21b is operating (a state where any signal is received). On the other hand, the transmission state of the remote controller 20 refers to a state where the transmission / reception unit 21 (light emitting element 21a) is transmitting a signal. Similarly, the reception state of the apparatus main body 1 refers to a state where the transmission / reception unit 5 receives a signal, and refers to a state where the light receiving element 51 is operating (a state where a signal is received). In addition, the transmission state of the device 1 refers to a state in which the transmission / reception unit 5 (light emitting element 52) is transmitting a signal.

  When the transmission / reception state display mode is set by pressing and holding the switches 27a and 27b (when a predetermined setting signal is input), the control unit 28 causes the display 22 to display the transmission / reception state display unit 22a. The control unit 28 displays the mark M1 on the display unit 22a based on the reception state of the transmission / reception unit 21 (light receiving element 21b). Note that the control unit 28 preferably updates the reception state with time and causes the display unit 22a to display the reception state. For example, the display of the display unit 22a is sequentially updated at a time interval such that the reception state is recognized by the operator (examiner) in real time.

  When the transmission / reception state display mode is set, the control unit 28 recognizes the switch 26 as a switch (test switch) for generating a test signal (a driving signal for driving the light emitting element 21a). When the switch 26 is pressed, the control unit 28 generates a test signal, transmits it from the transmission / reception unit 21 (light emitting element 21a), and causes the display unit 22a to display the mark M2. At this time, the control unit 28 monitors the current value (or voltage value) of the drive circuit of the light emitting element 21a, and detects (confirms) whether an optical signal is emitted from the light emitting element 21a in response to the test signal. The control unit 28 displays the mark M2 based on the detection result. The mark M2 is displayed for a certain time (for example, 3 seconds) so that the operator can easily confirm after the switch 26 is pressed (the hand is released from the switch 26). The mark M2 may be configured such that the light signal emitted from the light emitting element 21a is received by the light receiving element 21b and the result is displayed.

  In the display unit 22a, when the transmitter / receiver 21 receives any signal, the mark M1 is displayed. In the present embodiment, the control unit 28 receives (detects) a signal from the light receiving element 52 and displays the mark M1 on the display unit 22a. Thereby, the operator can grasp the reception state of the remote controller 20.

  The reception status may be displayed when a signal is not received, and may not be displayed when a signal is received (the transmission status may also be displayed). In addition, the reception status display (mark) may be a character, a numerical value, a symbol, or the like (the transmission status display may be the same). Further, the display may be changed according to the intensity of the received signal. Further, it may be displayed in a graph so that the time change of the signal reception state can be understood.

  Similarly, in the transmission / reception state display unit 60 of the setup screen 40, the control unit 10 displays the mark M3 based on the reception state of the transmission / reception unit 5 (when a signal is received), and based on the transmission state of the transmission / reception unit 5. (When a signal is transmitted), the mark M4 is displayed. Thereby, the operator can grasp the reception state and the transmission state.

  Note that the optical signal may be transmitted by the light emitting element 52 by receiving light emitted from the light emitting element 52 by the light receiving element 51 and displaying the result on the display unit 60.

  The operation of the apparatus having the above configuration will be described focusing on the operation of the remote controller 20. The operator operates the switch unit 23 of the remote controller 20 to display a desired target on the display 30 and performs a visual acuity test on the subject's eye. For example, the type of the visual target is selected by operating the switch 24, and the visual acuity test is advanced while changing the visual value of the visual target by operating the switch 25.

  Here, a problem such as an error related to the remote control operation and identification of the cause will be described. When the remote controller 20 cannot operate the device 1, the operator specifies the cause of a problem such as an error in the following procedure. The operator solves this depending on the problem.

  First, the case where there is no problem in the remote controller 20 and one apparatus 1 is installed will be described. The operator operates the switches 27a and 27b to display the display unit 22a on the display 22. Then, holding the remote controller 20, it moves to the vicinity of the installation position of the device 1 and confirms the display unit 22 a. If the mark M1 is displayed on the display unit 22a, the operator knows that the transmission / reception unit 5 receives (receives) disturbance light. In this case, in order to prevent the transmission / reception unit 5 from receiving disturbance light, the operator performs an operation such as moving the device 1 away from an interior lighting lamp, a window (sunlight), or changing the direction of the device 1. Do. If the mark M1 on the display unit 22a disappears by such work, the remote controller 20 can operate the device 1. That is, the cause of the problem can be identified as ambient light. Further, if the problem is not solved by the above-described work, it can be specified that there is a problem in the apparatus 1 (transmission / reception unit 5 or the like).

  Such an operation can be performed independently using the remote controller 20 before installation of the apparatus 1, and a place suitable for installation of the apparatus 1 can be easily searched. Further, since the position, height, etc. of the remote controller 20 can be freely changed, for example, by performing work such as bringing the remote controller 20 close to a fluorescent lamp, it becomes easy to specify that the cause of the problem is disturbance light.

  The above description is an explanation for confirming the reception state of the optical signal at the place where the apparatus main body 1 is installed using the remote controller 20, but is not limited to this. Any configuration can be used as long as the reception state at the installation location of the apparatus body 1 can be confirmed.

  A case where the transmitter / receiver 5 of the apparatus main body 1 (reception confirmation unit provided in the apparatus main body 1) is used without using the remote controller 20 will be described. The operator operates the function switch 7 to display the setup screen 40 on the display 30. And the display part 60 is confirmed. If the mark M3 is displayed on the display unit 60 when the remote controller 20 is not operated, the operator has received (received) disturbance light from the transmission / reception unit 5 or the apparatus main body 1 (transmission / reception unit 5 or the like). ) Is broken. In this case, in order to prevent the transmission / reception unit 5 from receiving disturbance light, the operator keeps the apparatus main body 1 away from indoor lighting, windows (sunlight), etc., changes the direction of the apparatus main body 1, Change work. If the mark M3 on the display unit 60 disappears by such work, the operation of the apparatus main body 1 by the remote controller 20 becomes possible. That is, the cause of the problem can be identified as disturbance light, and an error in remote control operation due to disturbance light can be eliminated. If the problem is not solved by the above-described work, it can be specified that there is a problem in the apparatus main body 1 (transmission / reception unit 5 and the like). Furthermore, if the mark M3 is not displayed on the display unit 60 even when the remote controller 20 is operated, it can be determined that there is a problem (high possibility) in the apparatus body 1 (transmission / reception unit 5 and the like).

  Next, a case where a plurality of apparatus main bodies 1 are installed side by side without any problem in the remote controller 20 and a reception state confirmation unit provided in the remote controller 20 is used will be described. In this case, signal interference (crosstalk) due to simultaneous operation of a plurality of remote controllers may occur. For example, two apparatus main bodies 1 are installed side by side, the remote controller 20 corresponding to the first apparatus main body 1 which is the first apparatus main body 1 is used as the first remote controller 20, and the second apparatus which is the second apparatus main body 1. The remote controller 20 corresponding to the main body 1 is referred to as a second remote controller 20. The remote controller 20 is set corresponding to the apparatus main body 1, and a device-specific code is given to the transmitted signal. Therefore, even if the first apparatus main body 1 receives the signal of the second remote controller 20, the control is performed. The unit 10 ignores the signal (command) (even if the second apparatus main body 1 receives the signal from the first remote controller 20). However, when the first or second device body 1 receives signals from the first and second remote controllers 20 at the same time, the control unit 10 cannot execute an operation based on the received signal (command). Thus, if a plurality of devices 1 and the remote controller 20 are used simultaneously, signal interference (crosstalk) may occur.

  The operator performs the same operation as described above (when the apparatus main body 1 is one), moves to the vicinity of the installation position of the first apparatus main body 1 with the first remote controller 20, and checks the display unit 22a. . If the mark M1 is displayed on the display unit 22a of the first remote controller 20, the above-described operation (such as removal of ambient light) is performed.

  Next, the second remote controller 20 is operated at the operation position with respect to the second apparatus main body 1 to check the reception state at the first remote controller 20. At this time, if the mark M1 is displayed on the display unit 22a of the first remote controller 20, the first apparatus body 1 has received a signal from the second remote controller 20 (in this case, the second apparatus body 1 is the first device). 1) There is a high possibility of receiving a signal from the remote controller 20. That is, signal interference (crosstalk) from the two remote controllers 20 is identified as the cause of the problem. In this case, the operator moves the first remote controller 20 while confirming the display unit 22a of the first remote controller 20, searches for a position without interference (crosstalk), and installs the first apparatus main body 1 at that position. Along with this, the installation position of the second apparatus main body 1 is also changed. This solves the problem. Thus, by using the easy-to-carry remote controller 20, a position free of interference (crosstalk) can be easily confirmed, and the installation work of the apparatus 1 can be performed efficiently. It should be noted that any device 1 may be the first in order of confirmation of reception status.

  A case where a plurality of apparatus main bodies 1 are installed side by side without any problem in the remote controller 20 and a transmission / reception unit 5 (reception state confirmation unit) provided in the apparatus main body 1 is used will be described.

  The operator confirms the display unit 60 by performing the same operation as described above (when the apparatus main body 1 is one). If the mark M3 is displayed on the display unit 60 of the first apparatus main body 1 in a state where the first remote controller 20 is not operated, the above-described operation (such as removal of disturbance light) is performed. On the other hand, if the mark M <b> 3 is not displayed on the display unit 60 of the first device body 1, the reception state is confirmed by operating the first remote controller 20 at the operation position with respect to the first device body 1. If the reception state can be confirmed, the second remote controller 20 is then operated at the operation position with respect to the second apparatus body 1 to confirm the reception state. At this time, if a mark is displayed on the display unit 60 of the first device main body 1, the first device main body 1 has received a signal from the second remote controller 20 (in this case, the second device main body 1 is the first one). 1) There is a high possibility of receiving a signal from the remote controller 20. That is, signal interference from the two remote controllers 20 is identified as the cause of the problem. In this case, the operator confirms the display unit 60 of the first device main body 1 and operates the operation position of the second remote control 20 to a position where the signal from the second remote control 20 is not received by the receiving unit 5 of the first device main body 1. To change. Along with this, the installation position of the second apparatus main body 1 is also changed. This solves the problem. It should be noted that any device 1 may be the first in order of confirmation of reception status.

  Next, a case where there is a problem with the remote controller 20 will be described. The operator operates the remote controller 20 and confirms the display unit 22a. In this case, the mark M2 (mark for displaying the transmission state) is not displayed on the display unit 22a. In this case, the light emitting element 21a may be out of order. When the battery of the remote controller 20 is exhausted, the display unit 22a (display 22) is not displayed. In this way, the failure of the remote controller 20 is identified as the cause of the problem.

  A case where the remote controller 20 has a problem and the transmitter / receiver 5 of the apparatus main body 1 (reception confirmation unit provided in the apparatus main body 1) is used will be described. The operator operates the remote controller 20 and confirms the display unit 60. In this case, the mark M3 is not displayed on the display unit 60. The operator replaces the battery of the remote controller 20 and then operates the remote controller 20 again to check the display unit 60. If a mark is displayed on the display unit 60, battery consumption is identified as the cause of the problem. On the other hand, if the mark M3 is not displayed, the failure of the remote controller 20 is identified as the cause of the problem.

  Next, an operation for confirming bidirectional communication between the apparatus main body 1 and the remote controller 20 will be described. The operator causes the display unit 22a to be displayed on the display 22 of the remote controller 20 by the same operation. Further, the function switch 7 is operated to display the setup screen 40 (display unit 60) on the display 30 of the apparatus 1. The operator holds the remote controller 20 and moves to the installation distance when operating the apparatus 1 (the distance between the apparatus body 1 and the remote controller 20 is the installation distance). And the switch 26 is operated, the display part 22a is confirmed, and the display part 60 is confirmed.

  If the mark M2 is displayed on the display unit 22a and the mark M3 is displayed on the display unit 60, a signal is transmitted from the remote controller 20 to the device 1. If the mark M4 is not displayed on the display unit 22a even though the mark M4 is displayed on the display unit 60, there is no reply (signal transmission) from the device 1 to the remote controller 20 or it has arrived. It will not be. In this case, the operator moves the operation position of the remote controller 20 closer to the device 1 to deal with the problem.

  When the mark M3 is not displayed even though the mark M3 is displayed on the display unit 60, it is known that the light emitting element 52 (or the drive circuit) of the transmission / reception unit 5 has failed, and the problem is identified. Can do.

  In this way, a problem in bidirectional communication between the device 1 and the remote controller 20 can be easily identified.

  As described above, the transmission / reception state can be easily confirmed using the remote controller 20, and the cause of the problem related to the remote control operation can be easily grasped (specified). Further, it is possible to easily grasp the bidirectional communication (transmission / reception state) between the apparatus main body 1 and the remote controller 20. Also, by grasping (identifying) the cause of the problem, some problems can be solved easily. Specifically, it is a problem on the remote controller 20 side (failure, battery consumption, etc.) or a problem on the apparatus body 1 side (failure, disturbance light or reception or reception of disturbance signal, etc.), the remote controller 20 and the apparatus. It is possible to easily grasp (specify) whether the relationship such as the installation distance with the main body 1 is a problem. Further, when the reception or reception of disturbance light or disturbance signal is a problem, the problem can be easily solved by removing the cause of disturbance light or disturbance signal while checking the display unit 22a.

  Further, by displaying the transmission / reception state on the display 22, it is not necessary to newly provide a display unit for the transmission / reception state, and costs and the like can be suppressed. Further, it is not necessary to prepare a dedicated sensor (such as an exposure apparatus) for detecting (measuring) the transmission / reception state.

  Moreover, in said embodiment, although the display part 22a of the transmission / reception state of a signal was displayed on the display 22, it is not restricted to this. For example, the transmission / reception state of the transmission / reception unit 21 may be indicated by the on / off state of the pilot lamp 20a indicating the operating state of the remote controller 20. In this case, it is preferable that the reception state can be identified as red, the transmission state as blue, and the like.

  Moreover, in said embodiment, although the control unit 28 controlled the display of the display part 22a, it is not restricted to this. For example, the signal from the transmission / reception unit 21 or the signal to the transmission / reception unit 21 may be directly displayed on the display unit 22a.

  In the above embodiment, infrared rays (optical signals) are used for wireless communication between the apparatus 1 and the remote controller 20, but the present invention is not limited to this. Any configuration capable of wireless communication is acceptable. For example, radio waves (electromagnetic waves) may be used. In this case, the transmitter / receiver provided in the remote controller and the apparatus main body is configured to be able to receive the wavelength characteristic (frequency) of the radio wave that is a switching signal from the remote controller. Note that a transmission element provided in the remote control and the device Honda is an element (such as an antenna) that emits radio waves.

  In the above embodiment, the switches 27a and 27b are mode switches on the remote controller 20 side for selecting the transmission / reception state display mode. However, the present invention is not limited to this. A dedicated switch may be provided. The test switch may also be provided with a dedicated switch.

  Moreover, in said embodiment, although the display 30 was used for the optotype presenting part 3, it is not restricted to this. For example, a target projection type target presentation unit may be used.

  In the above embodiment, the remote controller and the apparatus main body 1 perform bidirectional communication. However, the present invention is not limited to this. It may be a unidirectional communication type device in which a signal is only transmitted from the remote control to the device body 1. And what is necessary is just the structure by which the receiving element with the receiving characteristic similar to the receiving element of the apparatus main body 1 is provided in the remote control at least.

  In the above description, the remote controller 20 and the apparatus main body 1 are provided with a transmission / reception unit that also serves as a reception unit and a transmission unit and a display unit that displays a transmission / reception state as a transmission / reception state confirmation unit. It is not limited. In the optotype presenting apparatus 100, any configuration may be employed as long as either apparatus is provided with a transmission / reception state confirmation unit. In each device, it is not always necessary to check the transmission state. Any configuration that can at least confirm the reception state may be used. By confirming the reception state, it is possible to identify and eliminate the problem of ambient light (signal) incident on the apparatus main body.

It is a schematic external view which shows the structure of a optotype presenting apparatus. It is a schematic block diagram which shows the structure of a visual target presentation part, and the control system of an apparatus. It is an external view which shows the structure of a remote control. It is a figure for demonstrating a setup screen.

DESCRIPTION OF SYMBOLS 1 Visual target presentation apparatus main body 3 Visual target presentation part 5 Transmission / reception part 7 Function switch 10 Control unit 20 Remote control 21 Transmission / reception part 22 Display 28 Control unit 30 Display 40 Setup screen 100 Target display apparatus

Claims (10)

In the optotype presenting apparatus for presenting the optotype for examination to the subject's eye,
An optotype presenting unit for presenting the optotype to the subject's eye;
A receiver for receiving a signal from a wireless controller;
A control unit that presents the optotype to the optotype presenting unit based on a signal from the receiving unit;
A mode switch for setting a reception state display mode for displaying the reception state of the reception unit;
A reception state display unit for displaying a reception state of the reception unit in the reception state display mode;
An optotype presenting apparatus characterized by comprising: The optotype presenting apparatus according to claim 1,
The optotype presenting apparatus, wherein the reception state display unit causes the control unit to display the optotype presenting unit based on a setting signal of the reception state display mode by the mode switch. In an optotype presenting apparatus having an apparatus main body having an optotype presenting unit for presenting an optotype for examination to a subject's eye, and a wireless remote controller for operating the apparatus main body,
The remote controller is
A control unit for generating a signal for operating the apparatus body;
A transmission unit for transmitting the signal generated by the control unit;
A receiving unit that receives a signal having a signal characteristic that matches the signal transmitted from the transmitting unit;
A reception state display unit for displaying a reception state of the reception unit;
An optotype presenting apparatus comprising: The optotype presenting apparatus according to claim 3,
The remote controller includes a mode switch for setting a reception state display mode for displaying a reception state of the reception unit,
The optotype presenting apparatus, wherein the reception state display unit displays a reception state of the reception unit in the reception state display mode. The optotype presenting apparatus according to claim 4,
The remote controller includes a display for displaying information based on a signal for operating the apparatus main body,
The reception state display unit is configured to cause the display to display on the display based on a setting signal of the reception state display mode by the mode switch.
An optotype presenting apparatus characterized by that. An apparatus main body having a target presentation unit capable of switching and presenting a test target to the subject's eye, and a remote controller having a transmission unit for transmitting a target switching signal wirelessly; In the visual target presenting device, the main body is provided with a first receiving unit that receives a switching signal from the remote controller, and the visual target presenting unit presents the visual target based on the switching signal transmitted from the remote controller.
A reception state confirmation unit having a second reception unit capable of receiving a signal having the same wavelength characteristic as the switching signal transmitted from the remote controller and having a reception state display unit for displaying a reception state of the second reception unit; A visual target presentation device characterized by that. The optotype presenting apparatus according to claim 6,
The optotype presenting apparatus, wherein the reception state confirmation unit is provided in at least one of the apparatus main body and the remote controller. The optotype presenting apparatus according to claim 6,
The second receiving unit is also used as the first receiving unit, and the reception status display unit is provided in the apparatus body.
The apparatus main body includes a mode setting unit for setting an operation mode of the second receiving unit to a reception state display mode for displaying a reception state on the reception state display unit. . The optotype presenting apparatus according to claim 6,
The reception state confirmation unit is provided in the remote controller,
The remote controller includes a mode setting unit for setting an operation mode of the second reception unit to a reception state display mode for displaying a reception state on the reception state display unit. . The optotype presenting apparatus according to claim 6,
The reception state confirmation unit is provided in both the apparatus main body and the remote controller,
The apparatus main body is
A second transmitter for transmitting a reply signal indicating that the target has been switched wirelessly to the remote controller for bidirectional communication with the remote controller;
A transmission state display unit that displays a transmission state of the second transmission unit, and the remote controller includes:
A third receiving unit for receiving a reply signal, the third receiving unit also serving as the second receiving unit;
An optotype presenting apparatus characterized by that.