Optometry device and remote control tray for optometry device

Abstract

To provide an optometer capable of eliminating attachment / detachment labor of a reflection member, by operation format change of a remote controller, when examining an eye to be examined, and preventing occurrence of communication failure between a remote controller and a target presentation device.SOLUTION: An optometer 1A comprises: an optometrical table 2; a target presentation device 3; a first remote controller 4A; and a first remote controller tray 5A. The target presentation device 3 is arranged proximate to a position facing a subject P sandwiching therebetween, an optometrical table 2, and comprises: a target window 30a for presenting a target OB; and a reception part 30b for receiving a light signal. A first remote controller 4A comprises: a transmission part 41 for transmitting the light signal to the reception part 30b; and an operation part 42 for switching and selecting, the target OB to be presented. The first remote controller tray 5A is provided on the optometrical table 2, and when the first remote controller 4A mounted on the optometrical table 2 is operated, reflects the signal light in a range from the transmission part 41 to the reception part 30b, and makes signal strength greater, relative to the time when there is no reflection.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an optometric apparatus and a remote control tray for the optometric apparatus. [Background technology]

[0002] Conventionally, there is known an optometry device that has a pair of left and right lens chamber units with an examination window, and that subjectively tests the refractive power of the subject's eye by switching and positioning optical elements in the examination window (see, for example, Patent Document 1). The conventional device includes a controller (hereinafter referred to as a "remote control") having a transmitter for transmitting, as an optical signal, a control signal for switching and positioning the optical element (lens) in the examination window, and a receiver provided in the optometry device main body for receiving the optical signal from the remote control. The transmitter is configured to make the angular distribution of the beam of light emitted from the optical signal from the forward direction to the upward direction larger than the angular distribution in the lateral direction. The optometry device main body is called a refractor head, which switches the lens in the examination window by remote control. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-329361 Summary of the Invention [Problem to be solved by the invention]

[0004] The prior art publication states that even if the remote control is placed on a table on which the optometry device main body is installed and operated, the difference in height between the remote control and the optometry device main body on which the receiving unit is installed is large, making it difficult to receive optical signals. It also states that the remote control's transmitting unit can have a signal diffusion unit that deflects light beams attached to or detached from the light emitting unit. However, in addition to being operated while placed on a table, the remote control can also be operated while held in the hand and pointed at the receiving unit of the optometry device main body, which poses a problem in that it requires the time and effort of detaching the signal diffusion unit (light beam deflection member) from the light emitting unit of the remote control each time.

[0005] The present invention has been made with an eye to the above-mentioned problems in mind, and aims to provide an eye examination device that, when examining a subject's eyes, does not require the time and effort of detaching and attaching a reflective member by changing the operation mode of the remote control, and prevents communication problems from occurring between the remote control and the optotype presentation device. [Means for solving the problem]

[0006] To achieve the above object, the optometry apparatus of the present invention includes an optometry table, a visual target presentation device, a remote control, and a reflecting member. The visual target presentation device is disposed adjacent to and facing the subject across the optometry table, and includes a visual target window that presents a visual target to the subject, and a receiving unit that receives an optical signal. The remote control includes a transmitting unit that transmits an optical signal to the receiving unit of the visual target presentation device, and an operating unit that switches or selects the visual target presented by the optical signal from the transmitting unit. The reflecting member is provided on at least one of the optometry table and the visual target presentation device, and when the remote control placed on the optometry table is operated, reflects the signal light from the transmitting unit to the receiving unit, thereby increasing the communication strength compared to without reflection. The optometry device includes a remote control tray that is provided on the optometry table as a reflecting member and reflects the signal light emitted from the transmitter, thereby increasing the signal strength of the optical signal compared to when it is not reflected. The remote control tray has a remote control mounting section on which the remote control is placed, and a reflector section that is positioned immediately in front of the transmitter when the remote control is placed on the remote control mounting section. The remote control has a monitor section that displays the optotype being presented to the subject. The remote control tray has a partition section on the subject side of the remote control mounting section that is set at a height that blocks the subject's line of sight from reaching the monitor section. [Effects of the Invention]

[0007] In this way, when the remote control is placed on the optometry table and operated, the reflection of the signal light by the reflective member increases the communication strength, preventing communication problems. On the other hand, when the remote control is held in the hand, the reflective member is not fixed to the remote control, eliminating the need to detach the reflective member from the remote control. As a result, when performing an eye examination on a subject, it is not necessary to detach the reflective member every time the remote control's operation mode is changed, preventing communication problems between the remote control and the optotype presentation device. In addition, the subject is prevented from answering questions by looking at the optotype displayed on the monitor during the eye examination, allowing for a correct examination. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view showing the overall appearance of an optometry apparatus according to Example 1. FIG. [Figure 2] FIG. 2 is a perspective view showing an optotype presenting device in the optometry apparatus according to the first embodiment. [Figure 3] 2 is an internal front view showing an example of a target presenting optical system of the target presenting device in the optometry apparatus according to the first embodiment. FIG. [Figure 4] 1 is a perspective view showing a first remote controller (an example of a remote controller) in the optometry apparatus according to Example 1. FIG. [Figure 5] FIG. 2 is a perspective view showing a first remote control tray (an example of a remote control tray) in the optometry apparatus according to the first embodiment. [Figure 6] FIG. 10 is an explanatory diagram showing how a remote control placed on an optometry table in the optometry apparatus of the related art is operated. [Figure 7] FIG. 10 is an explanatory diagram showing a state in which a remote control placed on an optometry table in the optometry apparatus of the related art is brought closer to an optotype presenting device when being operated. [Figure 8] 10 is an explanatory diagram showing, based on signal strength and light receiving sensitivity, that communication problems are likely to occur when operating a remote control placed on an optometry table in an optometry apparatus according to the related art. [Figure 9] 10 is an explanatory diagram illustrating an operation mode in which the remote controller is placed on the optometry table and operated in the optometry apparatus according to the first embodiment. FIG. [Figure 10]4A to 4C are explanatory views showing an operation mode in which the first remote controller is held in hand and operated in the optometry apparatus according to the first embodiment. [Figure 11] 10A and 10B are explanatory diagrams illustrating the effect of improving signal strength when the first remote controller is placed on the optometry table and operated in the optometry apparatus according to Example 1. FIG. [Figure 12] 5A to 5C are explanatory diagrams illustrating the operation of ensuring signal strength when the first remote controller is held in hand and operated in the optometry apparatus according to the first embodiment. [Figure 13] FIG. 10 is a side view showing the overall appearance of an optometry apparatus according to a second embodiment. [Figure 14] FIG. 10 is a front view showing a second remote controller (another example of the remote controller) in the optometry apparatus according to the second embodiment. [Figure 15] FIG. 10 is a perspective view showing a second remote control tray (another example of the remote control tray) in the optometry apparatus according to the second embodiment. [Figure 16] FIG. 10 is an explanatory diagram showing how a remote control placed on an optometry table in the optometry apparatus of the related art is operated. [Figure 17] 10A and 10B are explanatory diagrams illustrating the effect of improving signal strength and light-receiving sensitivity when the second remote controller is placed on the optometry table and operated in the optometry apparatus according to Example 2. FIG. [Figure 18] FIG. 10 is a side view showing an optometry apparatus according to Alternative Example 1 in which a tabletop optotype presenting device is placed on a dedicated stand instead of on an optometry table. [Figure 19] FIG. 10 is a side view showing an optometry apparatus according to another example 2 in which the visual target presentation device is a tall, floor-standing type visual target presentation device. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments for carrying out an optometric apparatus and a remote control tray for an optometric apparatus according to the present invention will be described based on Examples 1 and 2 shown in the drawings. [Example]

[0010] Example 1 is an example of an optometry device that uses a first remote controller having multiple transmitters as a remote controller and a first remote controller tray provided on the optometry table as a reflecting member, and presents optotypes by remote control via infrared communication. Here, "infrared communication" refers to wireless data communication realized using infrared rays, a type of electromagnetic wave.

[0011] In this specification and elsewhere, a wireless remote control device (remote controller) will be referred to as a "remote control." As shown in each figure throughout this specification, the left-right axis is referred to as the X-axis, the up-down axis is referred to as the Y-axis, and the front-back axis along which the subject and the visual target presentation device face each other is referred to as the Z-axis.

[0012] First, the configuration of an optometry apparatus 1A according to the first embodiment will be described with reference to FIGS.

[0013] The optometry device 1A of Example 1 is a device in which an examiner M presents various optotypes OB to a subject P, and measures the optical characteristics (refractive power, etc.) of the subject's eye E with the cooperation of the subject P who visually recognizes the presented optotypes OB through a temporary frame optometry.

[0014] As shown in FIG. 1, the optometry apparatus 1A includes an optometry table 2, a visual target presenting device 3, a first remote control 4A (remote control), a first remote control tray 5A (reflecting member, remote control tray), and an optometry frame 6.

[0015] The optometry table 2 is a table on which the optotype presentation device 3 and the like are placed when testing the eyesight of the subject P. The optometry table 2 is configured with a table board 20 and table legs (not shown). The table board 20 is, for example, a rectangular board whose length in the Z-axis direction, where the subject P and the optotype presentation device 3 face each other, is longer than its length in the X-axis direction.

[0016] A visual target presenting device 3 is placed on one end in the Z-axis direction of the table surface 20a of the optometry table 2. A chair (not shown) for the subject P to sit on is placed on the other end of the table top 20 in the Z-axis direction opposite the visual target presenting device 3. Furthermore, a chair (not shown) for the subject M to sit on is placed on at least one of the two long end faces in the X-axis direction of the table top 20. Note that the chair may be eliminated and the subject P and the subject M may be allowed to stand during the eye examination.

[0017] Here, the optometry apparatus 1A uses a space-saving optotype presenting device 3. Therefore, the distance L from the eye E to be examined of the subject P to the front of the optotype presenting device 3 is 1 m or less. Note that in some cases, devices with a distance L of about 40 cm to 60 cm are also known.

[0018] The optotype presenting device 3 is a device that presents a Landolt ring (virtual image), which is an optotype OB for distance optometry, at a distance (for example, a distance of about 5 m) in front of the subject's eye E. Here, the optotype OB for distance optometry is not limited to the Landolt ring shown in Fig. 1, and may of course be an E chart, Snellen chart, or other optotype other than the Landolt ring.

[0019] The optotype presenting device 3 has an optical system therein and is disposed opposite the subject P across the optometry table 2, closer than the distance test distance, and includes a housing 30 and an optotype presenting optical system 31 disposed inside the housing 30, as shown in Figures 2 and 3. Here, the optotype presenting device 3 in Example 1 is placed on one end of the table surface 20a of the optometry table 2 in the Z-axis direction.

[0020] 2, the housing 30 has a hollow, substantially rectangular parallelepiped shape and has a target window 30a and a receiving unit 30b on the front surface of the housing. The target window 30a is located at an upper position on the front surface of the housing facing the subject P, and is a rectangular target display window that presents the target OB to the subject P. The receiving unit 30b is located on the front surface of the housing at a position lateral to the window frame of the target window 30a (for example, at a central position in the height direction of the window frame or a lower position in the height direction of the window frame), and is a rectangular light-receiving area that receives an optical signal from the first remote control 4A.

[0021] Here, "optical signal" refers to a specific pulse signal of near-infrared light (infrared light with a wavelength of 780 nm to 3 μm) emitted from the transmitter 41 of the first remote control 4A when a transmission operation is performed using the first remote control 4A.

[0022] As shown in FIG. 3, the visual target presenting optical system 31 includes a display 31a, a first reflecting mirror 31b, a second reflecting mirror 31c, a convex lens system 31d, and an optical path bending mirror 31e.

[0023] The display 31a is configured, for example, with a liquid crystal display device, and displays an optotype image on a display screen located at the position of the object point O in response to a control output signal from a controller (not shown) that receives an optical signal from the first remote control 4A. The display 31a is provided in the lower part of the housing 30, and is arranged at a position where it emits a light beam K1 from the side with respect to the direction of the line of sight S of the subject P (the depth direction of the optotype presentation device 3). At this time, the light beam K1 is emitted along a plane F (see FIG. 1) that intersects with (is perpendicular to) the line of sight S of the subject P.

[0024] The first reflecting mirror 31b is a reflecting mirror that reflects the light beam K1 emitted from the display 31a and directs the reflected light beam toward the second reflecting mirror 31c. The second reflecting mirror 31c is a reflecting mirror that reflects the reflected light beam K2 reflected by the first reflecting mirror 31b and directs the reflected light beam K2 toward the convex lens system 31d.

[0025] The convex lens system 31d is a lens system that transmits the reflected light beam K3 from the second reflecting mirror 31c and forms a virtual image using this reflected light beam K3. The convex lens system 15 is located above the display 13 and in a position where it does not interfere with the light beam K1 from the display 31a. In Figure 3, the symbol fo indicates the focus of the convex lens system 31d.

[0026] The optical path bending mirror 31e is a mirror that bends the optical path of the reflected light beam K3 that has passed through the convex lens system 31d by reflecting it (see Figure 1), and presents a virtual image target OB at an image point position at a predetermined distance in front of the subject P's eye E.

[0027] The first remote control 4A is an infrared remote control that uses LED light emission and receives operations from the subject M, emits a light signal corresponding to the operation toward the receiving unit 30b of the optotype presentation device 3, and switches or selects the optotype OB presented during the eye examination. As shown in FIG. 4, the first remote control 4A has a remote control main body 40, a transmitting unit 41, an operating unit 42, and a monitor unit 43. Note that "LED" is an abbreviation for "Light Emitting Diode."

[0028] Remote control body 40 is molded from a resin material and has a thin rectangular parallelepiped shape that can be held in one hand by subject M. Remote control body 40 is surrounded by six sides: remote control front face 40a, remote control left face 40b, remote control right face 40c, remote control back face 40d, remote control top face 40e, and remote control bottom face 40f.

[0029] The transmitter 41 transmits an optical signal to the receiver 30b of the visual target presentation device 3. The transmitter 41 has a first transmitter 41a arranged on the front surface 40a of the remote controller, a second transmitter 41b arranged on the left side surface 40b of the remote controller, and a third transmitter 41c arranged on the right side surface 40c of the remote controller. The first transmitter 41a is arranged in the center of the front surface 40a of the remote controller. The second transmitter 41b is arranged on the left side surface 40b of the remote controller, close to the first transmitter 41a. The third transmitter 41c is arranged on the right side surface 40c of the remote controller, close to the first transmitter 41a.

[0030] Here, a first recess 44a indicating the position of the first transmitter 41a is formed at the ridge where the remote control top surface 40e and the remote control front surface 40a intersect. A second recess 44b indicating the position of the second transmitter 41b is formed at the ridge where the remote control top surface 40e and the remote control left side surface 40b intersect. A third recess 44c indicating the position of the third transmitter 41c is formed at the ridge where the remote control top surface 40e and the remote control right side surface 40c intersect.

[0031] The operation unit 42 is an operation button for switching or selecting the optotype OB presented by the optical signal from the transmission unit 41. The operation unit 42 has a transmission unit selection button group 42a, an optotype setting button group 42b, and a power button 42c.

[0032] The transmitter selection button group 42a is composed of a plurality of push buttons provided on the remote control back surface 40d side of the remote control top surface 40e of the remote control main body 40. By operating the transmitter selection button group 42a, the subject M can select one of the first to third transmitters 41a to 41c and cause the selected transmitter to transmit an optical signal. It is also possible to cause all of the first to third transmitters 41a to 41c to transmit optical signals simultaneously.

[0033] The optotype setting button group 42b is composed of a plurality of push buttons provided at an intermediate position between the front face 40a and the back face 40d of the remote control on the top face 40e of the remote control main body 40. The subject M can select an optotype OB to be displayed in the optotype window 30a of the optotype presentation device 3 by operating the optotype setting button group 42b.

[0034] The power button 42c is configured as a push button provided on the top surface 40e of the remote control main body 40, on the monitor unit 43 side of the optotype setting button group 42b. The subject M can control the ON / OFF operation of the optotype presentation device 3 by operating this power button 42c.

[0035] The monitor unit 43 is a display that displays the optotype OB presented to the subject P so that the subject M can check it. The monitor unit 43 is configured with a rectangular LCD display provided on the front surface 40a of the remote control top surface 40e of the remote control main body 40. Note that "LCD" is an abbreviation for "Liquid Crystal Display."

[0036] The first remote control tray 5A is provided on the table surface 20a of the optometry table 2 and is an example of an optometry table-side reflective member that reflects the signal light emitted from the transmitter 41 of the first remote control 4A, thereby increasing the signal strength of the optical signal compared to when no reflection is present.

[0037] Here, the first remote control tray 5A may be set so that it can be fixed to the optimum position where the signal strength of the optical signal is strongest using double-sided tape or the like on the table surface 20a of the optometry table 2. Also, a tray installation frame line or the like may be displayed on the table surface 20a of the optometry table 2 so that the first remote control tray 5A can always be set to the optimum position where the signal strength of the optical signal is strongest.

[0038] As shown in FIG. 5, the first remote control tray 5A has a remote control placing portion 50, a reflecting plate portion 51, a partition portion 52, and a remote control positioning portion 53.

[0039] The remote control placing section 50 has a remote control placing surface 50a on which the first remote control 4A is placed. For example, when the subject M is located to the right of the subject P, the remote control right side surface 40c is pressed against the positioning surface 53a of the remote control positioning section 53, and the first remote control 4A is placed on the remote control placing surface 50a. On the other hand, when the subject M is located to the left of the subject P, the remote control left side surface 40b is pressed against the positioning surface 53a of the remote control positioning section 53, and the first remote control 4A is placed on the remote control placing surface 50a.

[0040] Here, the remote control placing surface 50a may be formed with a recess that allows the first remote control 4A to be slightly recessed for positioning and storing, or may be provided with a magnetic attraction structure that magnetically attracts and fixes the first remote control 4A. Note that forming a recess or providing a magnetic attraction structure can prevent problems such as the first remote control 4A accidentally dropping.

[0041] When the first remote control 4A is placed on the remote control holder 50, the reflecting surface 51a of the reflecting plate 51 is positioned immediately in front of the transmitting unit 41. The reflecting surface 51a may be a total reflecting surface such as a mirror, or a diffuse reflecting surface such as a white board. When the first remote control 4A is placed on the remote control holder 50, the reflecting plate 51 is positioned between the transmitting unit 41 of the first remote control 4A and the partition 52, tilted at an appropriate predetermined angle.

[0042] The partition 52 is arranged to stand upward from the subject side end of the remote control placing portion 50. The height of the partition 52 is set to a height that blocks the line of sight S of the subject P from reaching the monitor portion 43 of the first remote control 4A even when the subject P lowers his or her line of sight S.

[0043] In the case of the first remote control tray 5A, when the subject M is located to the right of the subject P, the reflecting surface 51a is located just before the second transmitting unit 41b of the first remote control 4A (see FIG. 9). On the other hand, when the subject M is located to the left of the subject P, the reflecting surface 51a is located just before the third transmitting unit 41c of the first remote control 4A.

[0044] The optometric frame 6 is an eyeglass frame for examination in which trial lenses (not shown) are detachably attached to the left and right frames. This optometric frame 6 is used in a trial frame examination in which the examinee M exchanges trial lenses among a plurality of prepared lenses.

[0045] Next, the background art of the optometry apparatus will be described with reference to FIGS.

[0046] In the space-saving visual target presentation device, as shown in FIGS. 6 and 7, the distance L from the subject's eye to the front surface of the visual target presentation device is 1 m or less, and is available in the range of 40 cm to 60 cm.

[0047] When performing an eye examination using such a visual target presentation device, the visual target presentation device is placed at one end of a long table, and the examinee is seated at the opposite end. In this case, the examiner places a remote control on the table between the visual target presentation device and the examinee to perform operations such as switching the visual targets.

[0048] Because it is difficult for the examiner to simultaneously see the optotype that the examinee is looking at, the remote control is equipped with a small monitor unit that allows the examiner to check the type and orientation of the presented optotype on the monitor and determine whether the examinee's response is correct. The examinee looks at a virtual image (optotype image) formed at the distance test distance by the internal optical system through the optotype window of the optotype presentation device, and responds regarding the orientation and appearance of the optotype.

[0049] However, as shown in Figure 6, when the examinee lowers his or her gaze S, the monitor part of the remote control placed on the table comes into view. For this reason, even if the examinee is unable to distinguish the actual distance target, he or she may look at the display on the monitor part of the remote control and answer the questions, which may result in an incorrect test being conducted.

[0050] When performing an eye examination using a refractor head, the refractor head blocks the view of the remote control located below and in front of the examiner, but this poses a problem when performing an eye examination using a temporary frame, as there are fewer obstructions to the view. Furthermore, when performing an eye examination using a temporary frame, the examiner frequently changes trial lenses during the eye examination. For this reason, holding the remote control in hand and operating it every time the trial lenses are changed results in an increase in unnecessary movements. Therefore, particularly when performing an eye examination using a temporary frame, the examiner often operates and checks the remote control while it is placed on the table.

[0051] Therefore, when the remote control is operated while it is placed on the table, the examiner will place the remote control farther away from the examinee so that the monitor part of the remote control is difficult for the examinee to see (RC1 → RC2 in Figure 7).As a result, the remote control will be closer to the visual target presentation device.

[0052] The receiving unit of the visual target presentation device that receives the optical signal from the remote control is placed at a predetermined height H (approximately 300 cm to 40 cm) from the table surface, as shown in Fig. 7. Therefore, the elevation angle θ from the front of the transmitting unit of the remote control to the front of the receiving unit of the visual target presentation device becomes larger as the remote control is brought closer to the visual target presentation device, from a first elevation angle θ1 when the remote control is located at RC1 to a second elevation angle θ2 (>θ1) when the remote control is located at RC2.

[0053] When the remote control is an optical remote control such as an infrared remote control, the distribution of the signal strength (light intensity) emitted from the light-emitting unit (LED) is strongest in the direction directly in front of the light-emitting unit, and the signal strength decreases as the angle from the front direction increases, as shown in Figure 8. Similarly, the light-receiving sensitivity of the light-receiving unit (optical sensor) of the visual target presentation device is strongest in the direction directly in front of the light-receiving unit, and tends to decrease as the angle from the front direction increases, as shown in Figure 8.

[0054] Therefore, when the optical remote control is close to the visual target presentation device, the elevation angle from the light-emitting part of the optical remote control to the light-receiving part of the visual target presentation device becomes large, and both the signal strength and receiving sensitivity decrease, making communication problems more likely to occur.

[0055] In response to this, Japanese Patent Application Laid-Open No. 2004-329361 proposes an ophthalmological examination device in which a signal diffusion unit (light beam deflection member) that deflects light beams is attached to the light emitting unit of the remote control. However, in addition to being operated by placing the remote control on a table as described above, the remote control can also be held in the hand and operated from behind the subject, pointing it at the receiving unit of the optotype presentation device.

[0056] When a remote control is operated by hand, if a signal diffusion unit is attached to the light-emitting unit of the remote control, the optical signal traveling from the transmitter unit to the receiver unit of the remote control will be diffused, reducing the signal strength to the receiver, and therefore the signal diffusion unit must be removed. On the other hand, when the remote control is placed on a table and operated, if the signal diffusion unit is removed from the light-emitting unit of the remote control, the signal strength traveling from the transmitter unit to the receiver unit of the remote control will be reduced, and therefore the signal diffusion unit must be attached. Therefore, whenever the operation mode of the remote control is changed, it is necessary to take the time to detach and attach the signal diffusion unit from the light-emitting unit of the remote control.

[0057] The problem in the background art is solved by the optometry apparatus 1A of Example 1. Hereinafter, the optometry operation of the optometry apparatus 1A of Example 1 will be described with reference to Figs.

[0058] First, when a visual acuity test is performed on a subject P, alignment is performed to adjust the positional relationship between the subject P and the optotype presentation device 3. Alignment is performed by having the subject P sit in a chair, and adjusting the distance L from the subject's eye E to the optotype window 30a of the optotype presentation device 3 to a predetermined range of eye examination distance. The height of the subject's eye E is then adjusted to match the height of the central region of the optotype window 30a of the optotype presentation device 3 (see FIG. 1 ). Here, height adjustment can be performed, for example, by raising or lowering at least one of the chair and the optometry table 2, or by changing the angle of the reflecting mirror 31e to match the height of the subject's eye E. Generally, rough adjustments are made by adjusting the height of the chair or the optometry table 2, and fine adjustments are made by changing the angle of the reflecting mirror 31e.

[0059] After alignment, when a visual acuity test is performed on subject P, there are two operation modes of the first remote control 4A when subject M is added: operation mode 1 (Figure 9) and operation mode 2 (Figure 10).

[0060] 9, operation form 1 is a form in which the first remote control 4A is placed on the optometry table 2 and operated. In operation form 1, the first remote control 4A is placed on a first remote control tray 5A set on the optometry table 2. At this time, in the case of FIG. 9 in which the subject M is located to the right of the subject P, the right side surface 40c of the remote control is pressed against the positioning surface 53a of the remote control positioning unit 53, and the first remote control 4A is placed on the remote control placement surface 50a.

[0061] By placing the first remote control 4A, the reflecting surface 51a is placed in a position immediately in front of the second transmission unit 41b of the first remote control 4A. The operation unit 42 and monitor unit 43 of the first remote control 4A are positioned so that the subject M can see the optotype OB, buttons, etc. while facing forward (in the X-axis direction). Therefore, the power button 42c of the operation unit 42 is turned on, and a transmission unit including the second transmission unit 41b is selected using the transmission unit selection button group 42a of the operation unit 42, thereby starting the visual acuity test for the subject P.

[0062] When the visual acuity test is started, the examinee M looks straight ahead at the optotype OB displayed on the monitor unit 43, and switches or selects the optotype OB by operating the optotype setting button group 42b of the operation unit 42. Then, the examinee M replaces the trial lenses in the ophthalmic frame 6 based on the correct / incorrect response of the subject P.

[0063] The communication failure prevention action for preventing the occurrence of a communication failure between the first remote controller 4A and the visual target presentation device 3 in the operation mode 1 will be described with reference to FIG.

[0064] In operation form 1, when a signal light is emitted from the second transmission unit 41b of the first remote control 4A in the Z-axis direction (the horizontal direction toward the subject P), it is reflected by the reflection surface 51a of the reflector unit 51 of the first remote control tray 5A. Due to this reflection, the signal intensity distribution of the signal light becomes higher in the direction toward the receiving unit 30b of the visual target presentation device 3 than in the case where the signal light is not reflected. Therefore, in operation form 1 in which the first remote control 4A is placed on the first remote control tray 5A set on the optometry table 2, communication problems between the first remote control 4A and the visual target presentation device 3 are prevented.

[0065] Operation form 2 is a form in which the first remote control 4A is held in the hand and operated, as shown in Fig. 10. When switching from operation form 1, in which the first remote control 4A is placed on the optometry table 2 and operated, to operation form 2, the first remote control 4A (shown by the imaginary line in Fig. 10) placed on the first remote control tray 5A is held in the hand and moved to a position behind the subject P. A communication failure prevention action that prevents communication failure between the first remote control 4A and the optotype presentation device 3 in operation form 2 will be described with reference to Fig. 12.

[0066] In operation form 2, the distance between the first remote control 4A and the visual target presentation device 3 is longer than in operation form 1, and the first remote control 4A is spaced apart from the visual target presentation device 3. Therefore, if the first transmitting unit 41a of the first remote control 4A and the receiving unit 30b of the visual target presentation device 3 are misaligned in the Y-axis direction or the X-axis direction, the signal strength and light receiving sensitivity decrease, making communication problems more likely to occur.

[0067] In contrast, by aligning the direction in which the first transmitter 41a of the first remote control 4A held in the hand with the position of the receiver 30b of the visual target presentation device 3, the first remote control 4A can be used with the highest signal strength in the front direction. Therefore, as shown in Fig. 12, when the subject M emits signal light in the -Z axis direction (the horizontal direction toward the visual target presentation device 3) in the aligned state, high signal strength and high light receiving sensitivity are ensured. Therefore, in operation mode 2 in which the first remote control 4A is operated by holding it in the hand, communication problems between the first remote control 4A and the visual target presentation device 3 are prevented.

[0068] In addition, when the first remote control 4A is held and operated, the reflector portion 51 is integrally formed with the first remote control tray 5A provided on the optometry table 2, and no reflecting member is fixed to the remote control. Therefore, when switching from operation mode 1, in which the first remote control 4A is operated while placed on the optometry table 2, to operation mode 2, in which the first remote control 4A is held and operated, there is no need to remove the reflecting member from the first remote control 4A.

[0069] In this way, when examining the subject P using the eye examination device 1A, there is no need to take the time to detach and attach the reflective member every time the operating mode of the first remote control 4A is changed, and communication problems between the first remote control 4A and the visual target presentation device 3 are prevented.

[0070] As described above, the optometry apparatus 1A according to the first embodiment provides the following effects.

[0071] (1) The optometry apparatus 1A includes an optometry table 2, a visual target presentation device 3, a first remote control 4A, and a reflecting member. The visual target presentation device 3 is disposed adjacent to and facing the subject P across the optometry table 2, and includes a visual target window 30a that presents a visual target OB to the subject P and a receiving unit 30b that receives an optical signal. The first remote control 4A includes a transmitting unit 41 that transmits an optical signal to the receiving unit 30b of the visual target presentation device 3, and an operating unit 42 that switches or selects the visual target OB presented by the optical signal from the transmitting unit 41. The reflecting member is provided on at least one of the optometry table 2 and the visual target presentation device 3, and when the first remote control 4A placed on the optometry table 2 is operated, the reflecting member reflects the signal light from the transmitting unit 41 to the receiving unit 30b, thereby increasing the communication strength compared to when no reflection is present. Therefore, when performing an eye examination on subject P, there is no need to take the trouble of detaching and attaching the reflective member every time the operating mode of the first remote control 4A is changed, and communication problems between the first remote control 4A and the visual target presentation device 3 can be prevented.

[0072] Here, the term "communication strength" is used as a broader term that includes both the "signal strength" of the reflective member provided on the eye examination table 2 and the "light receiving sensitivity" of the reflective member provided on the visual target presentation device 3.

[0073] (2) The reflective member is a first remote control tray 5A that is provided on the optometry table 2 and reflects the signal light emitted from the transmitter 41, thereby increasing the signal intensity of the optical signal compared to when no reflection is present. The first remote control tray 5A has a remote control mounting portion 50 on which the first remote control 4A is mounted, and a reflector portion 51 that is positioned immediately in front of the transmitter 41 when the first remote control 4A is mounted on the remote control mounting portion 50. Therefore, by simply adding the first remote control tray 5A to the table surface 20a of the optometry table 2 of an existing optometry device, it is possible to create an optometry device 1A that prevents communication problems without the need to attach or detach a reflective member.

[0074] That is, the reflecting member is the first remote control tray 5A provided on the optometry table 2. Therefore, when the first remote control 4A is placed on the remote control placement portion 50 of the first remote control tray 5A, the positional relationship between the transmission portion 41 and the reflector portion 51 of the first remote control 4A is maintained appropriate to increase the signal strength of the optical signal.

[0075] (3) The first remote controller 4A has a monitor unit 43 that displays the optotype OB being presented to the subject P. The first remote controller tray 5A has a partition unit 52 on the subject P side of the remote controller placing unit 50 that is set at a height that blocks the subject P's line of sight S from reaching the monitor unit 43. This prevents the subject P from answering questions while looking at the optotype OB displayed on the monitor unit 43 during the eye examination, allowing for a correct examination.

[0076] That is, the line of sight S of the subject P toward the monitor unit 43 is blocked by the partition 52. The partition 52 of the first remote control tray 5A is particularly effective during temporary frame eye examination, when there is little obstruction to the line of sight S of the subject P, and accurate test results can be obtained during temporary frame eye examination.

[0077] (4) The first remote control tray 5A has the partition section 52 arranged to rise upward from the end of the remote control placement section 50 on the subject P side. The reflector section 51 is arranged at an angle between the transmitter section 41 of the first remote control 4A and the partition section 52 when the first remote control 4A is placed on the remote control placement section 50. Therefore, compared to when the reflector section 51 is arranged to rise diagonally upward from the end of the remote control placement section 50 on the visual target presentation device 3 side, the signal intensity of the optical signal reflected from the first remote control 4A and directed toward the visual target presentation device 3 can be made higher.

[0078] That is, the reflector unit 51 is generally positioned so that it rises obliquely upward from the end of the remote control holder 50 on the side of the visual target presentation device 3 with respect to the first remote control 4A, which has its transmission unit 41 facing the visual target presentation device 3 (see Example 2). However, in this general example, the distance between the reflector unit 51 and the visual target presentation device 3 becomes short, and the elevation angle of the reflected signal heading toward the receiver 30b also becomes large.

[0079] In contrast, if the reflector unit 51 is placed at an angle between the transmitter unit 41 of the first remote control 4A and the partition unit 52, a long distance can be ensured between the reflector unit 51 and the visual target presentation device 3, even if the first remote control 4A is placed at the same table position as in the general example. Therefore, the elevation angle of the reflected signal heading toward the receiver unit 30b becomes smaller than in the general example, making it easier to align the maximum intensity region of the signal intensity distribution of the optical signal with the direction toward the receiver unit 30b.

[0080] (5) The first remote control 4A has, as the transmission unit 41, a first transmission unit 41a arranged on the front surface 40a of the remote control, a second transmission unit 41b arranged on the left side surface 40b of the remote control, and a third transmission unit 41c arranged on the right side surface 40c of the remote control. Therefore, when the first remote control 4A is placed on the optometry table 2 and operated, the subject M can operate the remote control while looking directly at the operation unit 42 and monitor unit 43 of the first remote control 4A, thereby reducing the operational burden of the first remote control 4A.

[0081] That is, remote controls that have only one transmitter on the front side are common (see Example 2). However, in the case of a remote control with only one transmitter, if the transmitter is placed in front of the reflector, the remote control will be placed sideways with its long side parallel to the table edge. This forces the tester to view the remote control's operation unit and monitor unit from the side, increasing the burden of operating the remote control.

[0082] In contrast, the first remote control 4A has a first transmitter 41a, a second transmitter 41b, and a third transmitter 41c arranged in three perpendicular directions. Therefore, by using either the second transmitter 41b arranged on the left side surface 40b of the remote control or the third transmitter 41c arranged on the right side surface 40c of the remote control as a transmitter, the first remote control 4A can be rotated 90 degrees from a horizontal orientation (oriented along the Z axis) to a vertical orientation (oriented along the X axis). Therefore, the subject M can operate the remote control while looking directly at the operation unit 42 and monitor unit 43 of the first remote control 4A. [Example]

[0083] Example 2 is an example of an optometry device that uses a second remote control with one transmitting unit as the remote control, and uses a second remote control tray provided on the optometry table and a device-side reflector provided on the optotype presentation device as the reflective member.

[0084] First, the configuration of an optometry apparatus 1B according to the second embodiment will be described with reference to FIGS.

[0085] As shown in FIG. 13, the optometry device 1B includes an optometry table 2, an optotype presentation device 3, a second remote control 4B (remote control), a second remote control tray 5B (reflective member, remote control tray), an optometry frame 6, and an apparatus-side reflector 7 (reflective member).

[0086] Here, the optometry table 2, the optotype presentation device 3, and the optometry temporary frame 6 have the same configurations as those in Example 1, and therefore descriptions thereof will be omitted. Below, the configurations of the second remote control 4B, the second remote control tray 5B, and the device-side reflector 7 will be described.

[0087] The second remote control 4B is an infrared remote control that uses LED light emission and receives operations from the subject M, emits an optical signal corresponding to the operation from one transmitter 41 toward the receiver 30b of the optotype presentation device 3, and switches or selects the optotype OB presented during the eye examination. As shown in Fig. 14, the second remote control 4B has a remote control main body 40, a transmitter 41, an operation unit 42', and a monitor unit 43.

[0088] The remote control main body 40 has a remote control front surface 40a and a remote control top surface 40e. The transmitter 41 is located only on the remote control front surface 40a. The operation unit 42' is provided on the remote control top surface 40e of the remote control main body 40, and is a group of operation buttons for switching and selecting the optotype OB presented by the optical signal from the transmitter 41, and for turning the power on and off. The monitor unit 43 is configured with a rectangular LCD display, similar to the first remote control 4A of the first embodiment.

[0089] The second remote control tray 5B is an example of an optometry table-side reflecting member that is provided on the optometry table 2 and reflects the signal light emitted from the transmitter 41 of the second remote control 4B, thereby increasing the signal intensity of the optical signal compared to when no reflection is present. As shown in Fig. 15 , the second remote control tray 5B has a remote control placing portion 50, a reflecting plate portion 51, and a partition portion 52.

[0090] The remote control placing section 50 has a recess 50b formed in the remote control placing surface 50a, which allows the second remote control 4B to be slightly depressed and positioned for storage. Therefore, when the second remote control 4B is placed in the recess 50b, the second remote control 4B is positioned.

[0091] The reflector section 51 is provided by rising obliquely upward from the end of the remote control placing section 50 on the side of the visual target presentation device 3, and the reflecting surface 51a is positioned just in front of the transmitter section 41 when the second remote control 4B is placed on it.

[0092] The partition 52 is arranged to stand upward from the subject side end of the remote control placing portion 50. The height of the partition 52 is set to a height that blocks the line of sight S of the subject P from reaching the monitor portion 43 of the first remote control 4A even when the subject P lowers his or her line of sight S.

[0093] The device-side reflector 7 is provided in the visual target presentation device 3 and is a device-side reflective member that reflects signal light traveling toward the receiving unit 30b, thereby increasing the light-receiving sensitivity of the optical signal compared to a case without reflection. As shown in Fig. 13, the device-side reflector 7 is provided above the receiving unit 30b and is arranged at a downward inclination angle toward the subject P, with its inner surface serving as a signal light reflecting surface 7a and its outer surface serving as an external light reflecting surface 7b. When the visual target presentation device 3 is viewed from the subject P's side, the device-side reflector lower surface 7c is set at a height position equal to or higher than the upper boundary line 300 of the frontal viewing area of ​​the receiving unit 30b.

[0094] Here, the device-side reflector 7 may be fixed to the visual target presentation device 3 in advance, or may be added to an existing visual target presentation device 3. When adding the device-side reflector 7 to an existing visual target presentation device 3, for example, the device-side reflector 7 may be detachably provided above the receiving unit 30b of the visual target presentation device 3 using a magnet or the like, or the device-side reflector 7 may be fixed using double-sided tape or the like.

[0095] Next, with reference to FIG. 16, the occurrence of communication problems in an optometry apparatus of a comparative example in which the optometry table and the target presentation device do not have reflecting members will be described.

[0096] In the comparative example without a reflective member shown in Fig. 16, as explained in the background art (Fig. 8), the elevation angle from the light-emitting unit (LED) of the optical remote control to the light-receiving unit (optical sensor) of the visual target presentation device becomes large. Therefore, both the signal strength from the light-emitting unit and the receiving sensitivity of the light-receiving unit decrease, making communication failures more likely to occur.

[0097] In particular, if the visual target presentation device does not have a device-side reflective member, the S / N ratio at the light-receiving unit will decrease in conditions where external light, such as room lighting, is incident on the light-receiving unit, as shown in Figure 16, increasing the frequency of communication problems from the light-emitting unit of the remote control to the light-receiving unit. Here, the "S / N ratio" is the ratio between the amount of effective signal components and the amount of noise components, and the larger the value, the less noise components there are.

[0098] Next, with reference to FIG. 17, a communication failure prevention function for preventing the occurrence of a communication failure in the operation mode 1 of the optometry apparatus 1B of the second embodiment will be described.

[0099] In operation form 1, when signal light is emitted from the transmitter 41 of the second remote control 4B in the Z-axis direction (horizontal direction toward the subject P), the signal light is reflected by the reflecting surface 51a of the reflector part 51 of the second remote control tray 5B. Due to this reflection of the signal light, the signal intensity distribution of the signal light becomes higher in the direction toward the receiver 30b of the visual target presentation device 3 than when the signal light is not reflected.

[0100] Then, on the receiving unit 30b side of the visual target presentation device 3, the light is transmitted from the reflecting plate unit 51 to the receiving unit 30b. Above A portion of the signal light traveling toward the device is reflected by the signal light reflecting surface 7a of the device-side reflector 7. Due to this reflection of the signal light by the signal light reflecting surface 7a, the light receiving sensitivity of the receiving unit 30b to the signal light becomes higher than when the signal light is not reflected.

[0101] Furthermore, when external light such as illumination is about to enter the receiving unit 30b of the visual target presentation device 3 on the receiving unit 30b side of the visual target presentation device 3, the external light is reflected by the external light reflecting surface 7b of the device-side reflector 7 before entering the receiving unit 30b. Due to this reflection of the external light by the external light reflecting surface 7b, the S / N ratio at the receiving unit 30b becomes higher than when there is no device-side reflector 7 and external light is not reflected.

[0102] Thus, in operation mode 1 in which the second remote control 4B is placed on the second remote control tray 5B of the optometry table 2, the signal strength in the direction toward the receiving unit 30b, the light-receiving sensitivity of the signal light at the receiving unit 30b, and the S / N ratio at the receiving unit 30b all increase. Therefore, in operation mode 1, the improved signal strength, light-receiving sensitivity, and S / N ratio effectively prevent communication problems between the second remote control 4B and the optotype presentation device 3.

[0103] Next, with reference to FIG. 13, a communication failure prevention function for preventing the occurrence of a communication failure in the operation mode 2 of the optometry apparatus 1B of the second embodiment will be described.

[0104] 13, operation form 2 is a form in which the second remote control 4B is held in the hand and operated. In operation form 2, the distance between the first remote control 4A and the optotype presentation device 3 is longer than in operation form 1, and the first remote control 4A and the optotype presentation device 3 are spaced apart. In addition, in the case of the optometry device 1B, if the device-side reflector 7 overlaps with the receiving unit 30b in a front view, the device-side reflector 7 acts as an obstruction, making communication problems more likely to occur.

[0105] In contrast, by aligning the direction of the transmitter 41 of the second remote control 4B held in the hand with the position of the receiver 30b of the visual target presentation device 3, the signal strength in the front direction can be maximized. Additionally, by setting the lower end surface 7c of the device-side reflector 7 at a height equal to or higher than the upper boundary line 300 of the front viewing area of ​​the receiver 30b, the device-side reflector 7 does not become an obstruction. Therefore, as shown in FIG. 13 , when the subject M is positioned in an aligned state, high signal strength and high light-receiving sensitivity are ensured by emitting signal light in the −Z-axis direction (the horizontal direction toward the visual target presentation device 3). Therefore, in operation mode 2, in which the second remote control 4B is operated by hand, communication problems between the second remote control 4B and the visual target presentation device 3 are prevented.

[0106] As described above, the optometry apparatus 1B according to the second embodiment has the following advantages in addition to the advantages (1), (2), and (3) described above.

[0107] (6) In addition to the second remote control tray 5B, the optotype presentation device 3 is provided with a reflecting member, a device-side reflector 7, which is provided on the optotype presentation device 3 and reflects signal light directed toward the receiving unit 30b, thereby increasing the light-receiving sensitivity of the optical signal compared to a case without reflection. The device-side reflector 7 is provided above the receiving unit 30b and is inclined downward toward the subject, with its inner surface serving as a signal light-reflecting surface 7a and its outer surface serving as an external light-reflecting surface 7b. Therefore, in operation mode 1 in which the second remote control 4B is placed on the optometry table 2, the improved signal strength, light-receiving sensitivity, and S / N ratio effectively prevent communication problems between the second remote control 4B and the optotype presentation device 3.

[0108] (7) When the visual target presentation device 3 is viewed from the front side of the subject P, the device-side reflector 7 is set so that its lower end surface 7c is at a height position equal to or higher than the upper boundary line 300 of the front view area of ​​the receiving unit 30b. Therefore, when the second remote control 4B is held in the hand and operated, operation is ensured without any obstructions toward the receiving unit 30b, and communication problems between the second remote control 4B and the visual target presentation device 3 can be prevented.

[0109] Next, as a modification of Example 2, the first remote control 4A is used instead of the second remote control 4B, and the first remote control tray 5A is used instead of the second remote control tray 5B. That is, a configuration can be adopted in which an apparatus-side reflector 7 is added to the optometry apparatus 1A of Example 1. When this modification of Example 2 is used, the effects (6) and (7) above can be obtained in addition to the effects (1), (2), (3), (4), and (5) of Example 1 above.

[0110] Next, in the optometry apparatuses 1A and 1B according to Examples 1 and 2, when attention is focused on the remote control trays for the optometry apparatus (first remote control tray 5A, second remote control tray 5B), which are reflective members provided on the optometry table 2, the following configuration is adopted.

[0111] The optometry apparatus remote control trays (first remote control tray 5A, second remote control tray 5B) are provided on the table surface 20a of the optometry table 2 and include a remote control placement section 50, a reflector section 51, and a partition section 52. The remote control placement section 50 places the remote controls (first remote control 4A, second remote control 4B) on it. The reflector section 51 is located just in front of the transmitter 41 when the remote control is placed on the remote control placement section 50, and increases the signal intensity of the optical signal traveling from the transmitter 41 to the receiver 30b compared to when no reflection is present. The partition section 52 is located on the subject P side of the remote control placement section 50, and blocks the subject P's line of sight S from reaching the monitor section 43. These configurations are common to the first remote control tray 5A of Example 1 and the second remote control tray 5B of Example 2.

[0112] The remote control tray for an optometric apparatus (first remote control tray 5A, second remote control tray 5B) employing the above-described configuration provides the following advantages (8) and (9).

[0113] (8) In an optometry apparatus including an optometry table 2, a visual target presenting device 3, and remote controls (first remote control 4A, second remote control 4B), the remote control tray for an optometry apparatus is provided on the table surface 20a of the optometry table 2, and has a remote control placing section 50 and a reflecting plate section 51. Therefore, by simply adding the remote control tray for an optometry apparatus to the table surface 20a of the optometry table 2 in an existing optometry apparatus, it is possible to create optometry apparatuses 1A and 1B that prevent communication problems between the remote controls and the visual target presenting device 3 without the need to attach and detach the reflecting member.

[0114] (9) The remote controls (first remote control 4A, second remote control 4B) have a monitor unit 43 that displays the optotype OB being presented to the subject P. The remote control tray for the optometric apparatus has a partition unit 52 that is placed on the subject P side of the remote control placing unit 50 and is set at a height that blocks the subject P's line of sight S from reaching the monitor unit 43. Therefore, a line of sight blocking function that blocks the subject P's line of sight S toward the monitor unit 43 during eye examination can be added to the remote control tray for the optometric apparatus (first remote control tray 5A, second remote control tray 5B).

[0115] The optometry device and the remote control tray for the optometry device of the present invention have been described above based on Examples 1 and 2. However, the specific configurations are not limited to those of Examples 1 and 2. Changes and additions to the design are permitted as long as they do not deviate from the gist of the invention according to each claim in the scope of the claims.

[0116] In Example 1, an example was shown in which only the first remote control tray 5A, which is an optometry table-side reflective member, is provided as the reflective member. In Example 2, an example was shown in which the second remote control tray 5B, which is an optometry table-side reflective member, and the device-side reflector 7, which is an device-side reflective member, are provided as the reflective member in combination. However, it is sufficient that a reflective member is provided on at least one of the optometry table and the optotype presentation device. In addition to Examples 1 and 2, an example may be one in which no optometry table-side reflective member is used and only the device-side reflective member (device-side reflector 7) is used. In this case, in Operation Form 1, the light receiving sensitivity of the receiving unit is improved and the S / N ratio is improved, thereby preventing communication problems between the remote control and the optotype presentation device.

[0117] In Examples 1 and 2, examples of the optometry apparatus 1A and 1B that use a temporary optometry frame 6 to perform optometry with a temporary frame are shown. However, the optometry apparatus may be an optometry apparatus that uses a refractor head to perform optometry. In the case of an optometry apparatus that uses a refractor head to perform optometry, the field of view of the examinee is limited, so it is also possible to use a remote control tray that does not have a partition.

[0118] In the first and second embodiments, an example of a device that presents only the optotype OB for distance optometry has been shown as the optotype presenting device. The optotype presenting device may also present an optotype for near optometry in addition to the optotype for distance optometry.

[0119] In the first and second embodiments, examples of the remote controllers are shown in which the first remote controller 4A and the second remote controller 4B use infrared communication and have a transmitter 41 that emits near-infrared light that is invisible to the human eye. However, the remote controller is not limited to a remote controller that uses infrared communication, and may be, for example, a remote controller that uses visible light communication that performs wireless communication using electromagnetic waves in the visible light band that are visible to the human eye.

[0120] In Example 1, an example was shown in which a first remote control 4A having a three-way transmitter is combined with a first remote control tray 5A having a reflector 51 on the subject P side of the first remote control 4A. In Example 2, an example was shown in which a second remote control 4B having one transmitter in the front direction is combined with a second remote control tray 5B having a reflector 51 on the optotype presentation device 3 side of the second remote control 4B. However, an example may also be an example in which the first remote control 4A described in Example 1 is combined with the second remote control tray 5B described in Example 2. Also, an example may also be an example in which the second remote control 4B described in Example 2 is combined with the first remote control tray 5A described in Example 1.

[0121] In the first and second embodiments, the tabletop optotype presenting device 3 is placed at an end position of the table surface 20a of the optometry table 2. However, when the tabletop optotype presenting device 3 is used and the optometry table 2 is small, the optotype presenting device 3 may be placed on a dedicated stand 32 and placed on the floor surface FL on the table end surface opposite the subject P, as shown in FIG. 18 . Furthermore, when a tall floor-standing optotype presenting device 3′ is used, the optotype presenting device 3′ may be placed on the floor surface FL on the table end surface opposite the subject P, as shown in FIG. 19 . In short, the optotype presenting devices 3, 3′ are not limited to being placed on the table surface 20a, but may be placed in close proximity to the subject P across the optometry table 2. [Explanation of symbols]

[0122] 1A Optometry equipment 2 Optometry Tables 2a Table surface 3 Visual target presentation device 30 Case 30a Optic window 30b Receiver 4A 1st remote control (remote control) 40 Remote control unit 40a Remote control front 40b Left side of remote control 40c Right side of the remote control 41 Transmitter 41a First transmitter 41b Second transmitting unit 41c Third Transmission Unit 42 Operation section 43 Monitor section 5A First remote control tray (reflector, remote control tray) 50 Remote control rest 51 Reflector section 52 Partition 1B Optometry equipment 4B Second remote control (remote control) 5B Second remote control tray (reflective material, remote control tray) 7. Reflector on device side (reflective material) 7a Signal light reflecting surface 7b External light reflective surface 7c Lower end of reflector 300 Upper boundary of the receiving section 30b P Subject OB optotype S line of sight M Measuring person

Claims

1. an optometry table; an optotype presentation device that is disposed adjacent to a position facing the subject across the optometry table, and includes an optotype window that presents an optotype to the subject, and a receiving unit that receives an optical signal; a remote controller having a transmitter that transmits an optical signal to a receiver of the visual target presentation device, and an operation unit that switches or selects the visual target presented by the optical signal from the transmitter; a reflecting member that is provided on at least one of the optometry table and the optotype presentation device, and that reflects signal light between the transmitting unit and the receiving unit when the remote control placed on the optometry table is operated, thereby increasing communication strength compared to when no reflection is present; a remote control tray provided on the optometry table as the reflecting member, the remote control tray reflecting the signal light emitted from the transmitting unit to increase the signal intensity of the optical signal compared to when no reflection is performed; the remote control tray has a remote control placement section on which the remote control is placed, and a reflector section that is disposed immediately in front of the transmitter section when the remote control is placed on the remote control placement section, the remote controller has a monitor unit that displays an optotype being presented to the subject, The remote control tray has a partition section on the subject side of the remote control placement section, the partition section being set at a height that blocks the subject's line of sight from reaching the monitor section. An optometric device characterized by:

2. The optometric apparatus according to claim 1, The remote control tray is arranged such that the partition part is raised upward from the subject side end of the remote control placing part, and the reflecting plate part is arranged at an angle between the transmitting part of the remote control and the partition part when the remote control is placed on the remote control placing part. An optometric device characterized by:

3. The optometry apparatus according to claim 1 or 2, The remote controller has, as the transmitting units, a first transmitting unit arranged on the front side of the remote controller, a second transmitting unit arranged on the left side of the remote controller, and a third transmitting unit arranged on the right side of the remote controller. An optometric device characterized by:

4. The optometry apparatus according to any one of claims 1 to 3, As the reflecting member, in addition to the remote control tray, a device-side reflector is provided in the visual target presentation device, which reflects the signal light directed upward to the receiving unit and increases the light receiving sensitivity of the optical signal compared to when there is no reflection, The device-side reflector is provided above the receiving unit and is disposed at a downward inclination angle toward the subject, with the inner surface serving as a signal light reflecting surface and the outer surface serving as an external light reflecting surface. An optometric device characterized by:

5. The optometric apparatus according to claim 4, The device-side reflector is set so that the lower end surface of the reflector is at a height position equal to or higher than the upper boundary line of the front view area of ​​the receiving unit when the subject views the visual target presentation device from the front. An optometric device characterized by:

6. An optometry apparatus including an optometry table, an optotype presentation device having an optotype window and a receiving unit, and a remote controller having a transmitting unit and an operating unit, the optometry apparatus remote controller tray being provided on a table surface of the optometry table, a remote controller placement section on which the remote controller is placed; a reflector section that is disposed immediately in front of the transmitter section when the remote controller is placed on the remote controller placement section, and that increases the signal intensity of an optical signal traveling from the transmitter section to the receiver section compared to when no reflection occurs; the remote controller has a monitor unit that displays an optotype being presented to the subject, A partition is provided on the subject side of the remote control placement unit, the partition being set to a height that blocks the subject's line of sight from reaching the monitor unit. A remote control tray for an optometric device.

Images