Chin support device and ophthalmologic apparatus

Abstract

To provide a chin support device and an ophthalmologic apparatus which enable a subject to acquire information about a subject eye comfortably and appropriately.SOLUTION: An ophthalmologic apparatus 100 comprises: a pair of right and left measurement heads 16 each having a measurement optical system 21 for acquiring information about a subject eye; an optical table 12 for supporting the measurement heads 16; and a chin support device 18 for supporting the chin of a subject and detachably attached to the optical table 12. The chin support device 18 comprises: an attachment 181 detachably attached to the optical table 12; and a chin support portion 182 provided projectingly from the attachment 181 toward the chin of the subject to support the chin.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a chin support device and an ophthalmic device. [Background technology]

[0002] There is known an ophthalmic device that includes a measurement head having a measurement optical system for acquiring information about the subject's eye and a visual target presenting unit that presents a visual target to the subject's eye, and that is suspended in front of the subject's eye by a support unit (see, for example, Patent Documents 1 and 2). There is also known an ophthalmic device in which a refractor head having an examination lens is suspended by a support unit and disposed in front of the subject's eye, and that presents a visual target to the subject's eye to acquire information about the subject's eye (see, for example, Patent Document 3).

[0003] The ophthalmic devices described in Patent Documents 1 to 3 have a forehead rest on which the subject places his / her forehead, and support the subject's face so that it does not move unexpectedly while the information of the subject's eye is being acquired. Furthermore, the ophthalmic device described in Patent Document 2 has a cheek rest with two cheek rests that support the subject's cheeks, and the face of the subject is supported by the cheek rest and the forehead rest, thereby further improving the stability of the support of the face. Furthermore, Patent Document 4 discloses a head-mounted display type ophthalmic device in which a chin rest for supporting the subject's chin is fixed to a table that supports the subject's elbows. Patent Document 5 discloses an ophthalmic device that includes a stand, a measurement head that has a measurement optical system that acquires information of the subject's eye, is supported by the stand so as to be movable in the horizontal and vertical directions relative to the subject's eye, and a chin support. By supporting the subject's face as in these conventional technologies, the subject can be examined in a comfortable position, and the information of the subject's eye can be appropriately and quickly acquired, but there is a strong demand for the development of a technology that allows the subject to perform the examination more comfortably and appropriately. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-216817 A [Patent Document 2] Patent Publication No. 2022-064300 [Patent Document 3] JP 2023-048902 A [Patent Document 4] JP 2018-175011 A [Patent Document 5] JP 2015-058107 A Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure has been made in consideration of the above circumstances, and has an object to enable a subject to obtain information about a subject's eye more comfortably and appropriately. [Means for solving the problem]

[0006] In order to achieve the above object, the chin support device of the present disclosure is a chin support device that is detachably attached to an optical table of an ophthalmic device that acquires information of a subject's eye, or to a stand that supports a measurement head for acquiring information of the subject's eye so as to be movable in horizontal and vertical directions, and includes an attachment part that is detachably attached to the optical table or the stand, and a chin support part that protrudes from the attachment part toward the subject's chin and supports the chin. In addition, the ophthalmic apparatus disclosed herein includes a measurement head having a measurement optical system for acquiring information of the test eye, an optical table supporting the measurement head, and a chin support device as described above, the chin support device being removably attached to the optical table. In addition, the ophthalmic apparatus disclosed herein includes a stand, a measurement head having a measurement optical system for acquiring information about the test eye and supported on the stand so as to be movable vertically relative to the test eye, and a chin support device as described above, the chin support device being removably attached to the stand. Effect of the Invention

[0007] With this configuration, the chin support device supports the face of the examinee more stably, allowing the examinee to take the test in a comfortable position, and the information on the examinee's eye can be obtained more appropriately and efficiently. In addition, the user can freely attach and detach the chin support device as needed. Therefore, the examinee can obtain the information on the examinee's eye more comfortably and appropriately. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an overall configuration of an ophthalmic apparatus according to a first embodiment. [Diagram 2] 1 is a diagram showing a schematic configuration of a main part of an ophthalmic apparatus according to a first embodiment. [Diagram 3] 2 is a side view of the vicinity of the chin support device of the ophthalmic apparatus according to the first embodiment. FIG. [Figure 4] 2 is a perspective view of the chin support device of the ophthalmologic apparatus according to the first embodiment, seen from the lower side. FIG. [Diagram 5] 2 is a diagram showing a schematic configuration of an internal structure of a chin support device of the ophthalmologic apparatus according to the first embodiment. FIG. [Figure 6] 11 is a perspective view of the vicinity of a chin support device of an ophthalmic apparatus according to a second embodiment. FIG. [Figure 7] 11 is a side view of the vicinity of a chin support device of an ophthalmic apparatus according to a second embodiment. FIG. [Figure 8] 13 is a side view of the vicinity of the chin support device of the ophthalmic apparatus according to the third embodiment. FIG. [Figure 9] 13 is a side view of the vicinity of a chin support device of the ophthalmic apparatus according to the fourth embodiment. FIG. [Figure 10] FIG. 13 is a perspective view of a chin support device of an ophthalmologic apparatus according to a fifth embodiment. [Figure 11] FIG. 13 is a side view of an ophthalmologic apparatus according to a sixth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Example 1 An ophthalmic device 100 according to a first embodiment of the present disclosure will be described below with reference to Figs. 1 to 5. The ophthalmic device 100 according to the first embodiment is a binocular open-type ophthalmic device capable of acquiring information on both of a subject's eyes E (hereinafter referred to as "eye information") simultaneously with the subject P keeping both eyes E open (see Fig. 3, etc.). The ophthalmic device 100 of the first embodiment is also capable of acquiring eye information for each eye by blocking one eye or turning off the fixation target.

[0010] The ophthalmic device 100 of the first embodiment is a device capable of performing any objective test and subjective test. In the subjective test, the ophthalmic device 100 presents a visual target or the like to the subject P at a predetermined presentation position, and obtains a subjective test result as eye information based on the subject P's response to the visual target or the like. The subjective test includes subjective refraction measurements such as a distance test, a medium vision test, a near vision test, a contrast test, a night test, a glare test, a pinhole test, and a stereoscopic vision test, and a visual field test. In the objective test, the ophthalmic device 100 irradiates light to the subject's eye E and measures eye information based on the detection result of the return light. The objective test includes a measurement for obtaining characteristics of the subject's eye E as eye information, and a photograph for obtaining an image of the subject's eye E. Furthermore, objective examinations include objective refraction measurement (REF measurement), corneal shape measurement (KERATOM measurement), intraocular pressure measurement, fundus photography, tomography using optical coherence tomography (OCT photography), and measurements using OCT.

[0011] [Overall configuration of ophthalmic equipment] The ophthalmologic apparatus 100 of the first embodiment mainly includes a main body 10, a chin support device 18, and an examiner controller 27, but may also include a subject controller (not shown). As shown in FIG. 1, the main body 10 includes a base 11, an optical table 12, a head support unit 13, a drive mechanism 15, a pair of measurement heads 16 (16L, 16R), a forehead rest unit 17, and a control unit 26.

[0012] The pair of measurement heads 16 are suspended and supported by the head support portion 13. The forehead rest portion 17 is suspended and supported by the head support portion 13 between the pair of measurement heads 16. The chin support device 18 is detachably attached to the optical table 12.

[0013] The ophthalmologic apparatus 100 of the first embodiment acquires information on the subject's eye E, in a state where the subject P facing the optical table 12 has his forehead supported by a forehead rest 17 suspended between a pair of measurement heads 16, and his chin C supported by a chin support device 18 attached to the optical table 12. In this specification, the X-axis, Y-axis, and Z-axis are set as shown in FIG. 1, and the left-right direction as viewed from the subject P is the X-direction, the up-down direction (vertical direction) is the Y-direction, and the direction perpendicular to the X-direction and the Y-direction, approaching and receding from the subject P (the depth direction of the measurement head 16, i.e., the front-rear direction) is the Z-direction. In the Z-direction, the direction toward the subject P is the forward direction, and the direction away from the subject P is the backward direction.

[0014] The base 11 is placed on the floor surface 1. The optical table 12 is a desk on which the examiner controller 27, a subject controller (not shown), items used in the eye examination, and the subject P places his / her hands for support, and is supported by the base 11. The optical table 12 is supported by the base 11 so that its position in the Y direction (height position) can be adjusted by a known driving mechanism such as an electric motor.

[0015] 1 and 2, the head support portion 13 includes a support column 131, an arm portion 132, and an attachment base portion 133. The support column 131 is supported by the base 11 at the rear end portion of the optical table 12 so as to extend in the Y direction.

[0016] The arm section 132 is provided at the tip of the support 131. The arm section 132 suspends both measuring heads 16 via the driving mechanism 15 above the optical table 12, extends from the support 131 toward the front side (Z direction), and has a mounting base section 133 provided at its end. The arm section 132 is movable in the Y direction relative to the support 131. The arm section 132 may also be movable in the X direction and Z direction relative to the support 131. A pair of driving mechanisms 15 are suspended from the mounting base section 133 at the tip of the arm section 132, and each driving mechanism 15 has a measuring head 16 suspended therefrom. That is, the pair of measuring heads 16 are supported by the head support section 13 via the pair of driving mechanisms 15.

[0017] A pair of measurement heads 16 are provided to correspond to the left and right eyes E of the subject, respectively, and will be referred to as a left eye measurement head 16L and a right eye measurement head 16R when described individually below. The left eye measurement head 16L acquires information of the left eye E (EL) of the subject P, and the right eye measurement head 16R acquires information of the right eye E (ER) of the subject P. The left eye measurement head 16L and the right eye measurement head 16R are configured to be plane-symmetrical with respect to a vertical plane located midway between them in the X direction.

[0018] 1, each measurement head 16 is provided with a mirror 19 (referred to as a left eye mirror 19L and a right eye mirror 19R when described individually) which is a deflection member, and houses a measurement optical system 21 (referred to as a left eye measurement optical system 21L and a right eye measurement optical system 21R when described individually). Each measurement head 16 acquires information of the corresponding subject eye E by the measurement optical system 21 via the mirror 19.

[0019] Each measurement optical system 21 has an optical system configured using various optical elements (for example, a Z alignment system, an XY alignment system, a keratometry system, a target projection system (target presentation unit), an anterior eye observation system having an image acquisition unit, a reflex measurement projection system, and a reflex measurement light receiving system, etc.). The measurement optical system 21 can use, for example, the measurement optical system described in JP 2019-216817 A, but is not limited to this configuration.

[0020] Each measurement optical system 21 is composed of one or a combination of a vision testing device that performs a vision test by switching the visual target presented, a phoropter that obtains the appropriate corrective refractive power of the test eye E by switching and positioning corrective lenses, a refractometer and wavefront sensor that measure refractive power, a fundus camera that takes images of the fundus, a tomography device that takes tomographic images of the retina, a specular microscope that takes images of the corneal endothelium, a keratometer that measures the corneal shape, a tonometer that measures intraocular pressure, etc.

[0021] The drive mechanism 15 has a left eye drive mechanism 15L corresponding to the left eye measurement head 16L and a right eye drive mechanism 15R corresponding to the right eye measurement head 16R. As shown in Fig. 2, the left eye drive mechanism 15L has a left eye vertical drive unit 22L, a left eye horizontal drive unit 23L, a left eye X-direction rotation drive unit (left eye horizontal direction rotation drive unit) 24L, and a left eye Y-direction rotation drive unit (left eye vertical direction rotation drive unit) 25L. As shown in Fig. 2, the right eye drive mechanism 15R has a right eye vertical drive unit 22R, a right eye horizontal drive unit 23R, a right eye X-direction rotation drive unit (right eye horizontal direction rotation drive unit) 24R, and a right eye Y-direction rotation drive unit (right eye vertical direction rotation drive unit) 25R.

[0022] The configuration of each of the driving units 22L to 25L corresponding to the left-eye measurement head 16L and the configuration of each of the driving units 22R to 25R corresponding to the right-eye measurement head 16R are configured to be plane-symmetrical with respect to a vertical plane located midway between them in the X direction. Hereinafter, except when they are described individually, they may be simply referred to as the vertical driving unit 22, the horizontal driving unit 23, the X-direction rotation driving unit 24, and the Y-direction rotation driving unit 25. The same applies to other components provided symmetrically on the left and right.

[0023] The drive mechanism 15 is configured such that a vertical drive section 22, a horizontal drive section 23, an X-direction rotation drive section 24, and a Y-direction rotation drive section 25 are arranged in this order from the top.

[0024] The vertical drive unit 22 is fixed to a mounting base unit 133 at the tip of the arm unit 132, and moves the horizontal drive unit 23, the X-direction rotation drive unit 24, and the Y-direction rotation drive unit 25 in the Y direction (vertical direction) relative to the arm unit 132 based on a control signal from the control unit 26. The horizontal drive unit 23 is fixed to the vertical drive unit 22, and moves the X-direction rotation drive unit 24 and the Y-direction rotation drive unit 25 in the X direction and Z direction (horizontal direction) relative to the vertical drive unit 22 based on a control signal from the control unit 26.

[0025] The vertical drive unit 22 and the horizontal drive unit 23 are configured by providing an actuator that generates a drive force, such as a pulse motor, and a transmission mechanism that transmits the drive force, such as a combination of gears, rack and pinion, etc. The horizontal drive unit 23 can be easily configured and the control of horizontal movement can be easily performed by providing a combination of an actuator and a transmission mechanism separately for the X direction and the Z direction, for example.

[0026] The X-direction rotation drive unit 24 is connected to the horizontal drive unit 23. Based on a control signal from the control unit 26, the X-direction rotation drive unit 24 rotates the measurement head 16 and the Y-direction rotation drive unit 25 corresponding to the horizontal drive unit 23 in the X direction (horizontal direction) around a pair of left and right vertical eyeball rotation axes that pass through the eyeball rotation center of the corresponding subject eye E and extend in the vertical direction (Y direction) as centers (rotation axes).

[0027] The Y-direction rotation drive unit 25 is connected to the X-direction rotation drive unit 24. The measurement head 16 is suspended from this Y-direction rotation drive unit 25. Based on a control signal from the control unit 26, the Y-direction rotation drive unit 25 rotates the corresponding measurement head 16 relative to the X-direction rotation drive unit 24 in the Y direction (vertical direction, up-down direction) around a pair of left and right horizontal eyeball rotation axes that pass through the eyeball rotation point of the corresponding subject eye E and extend in the horizontal direction (X direction) as centers (rotation axes).

[0028] The X-direction rotation drive unit 24 and the Y-direction rotation drive unit 25 can be configured such that a transmission mechanism receiving a driving force from an actuator moves along an arc-shaped guide groove. By matching the center positions of the guide grooves with a pair of horizontal eyeball rotation axes and a pair of vertical eyeball rotation axes, respectively, the X-direction rotation drive unit 24 and the Y-direction rotation drive unit 25 can rotate the measurement head 16 around the pair of horizontal eyeball rotation axes and a pair of vertical eyeball rotation axes of the subject's eye E.

[0029] The X-direction rotation drive unit 24 can be configured to support the Y-direction rotation drive unit 25 and the measuring head 16 rotatably about a rotation axis provided therein, and to rotate the measuring head 16 while changing the supporting position in cooperation with the horizontal drive unit 23. The Y-direction rotation drive unit 25 can be configured to support the measuring head 16 rotatably about a rotation axis provided therein, and to rotate the measuring head 16 while changing the supporting position in cooperation with the vertical drive unit 22.

[0030] With the above configuration, the drive mechanism 15 moves each measurement head 16 individually or in conjunction with each other in the X, Y, and Z directions, and rotates each measurement head 16 in the X and Y directions around the vertical and horizontal eyeball rotation axes of the subject's eye E. In the ophthalmic apparatus 100 of the first embodiment, the control unit 26 drives and controls each of the drive units 22 to 25 of the drive mechanism 15 to move and rotate each measurement head 16. Furthermore, the examiner, who is a user, can manually drive each of the drive units 22 to 25 to move and rotate each measurement head 16.

[0031] In addition, the left eye X-direction rotation drive unit 24L and the right eye X-direction rotation drive unit 24R rotate the left eye measurement head 16L and the right eye measurement head 16R in the X direction (left and right direction) to diverge (divergence movement) or converge (convergence movement) the test eye E. In addition, the left eye Y-direction rotation drive unit 25L and the right eye Y-direction rotation drive unit 25R rotate the left eye measurement head 16L and the right eye measurement head 16R in the Y direction (up and down direction) to direct the line of sight of the test eye E downward or return it to its original position. In this way, in the ophthalmologic device 100, the test subject can perform a divergence movement and convergence movement test, and can perform tests at various test distances from a far-point distance test to a near-point distance test in a binocular vision state to measure eye information of both test eyes E.

[0032] The forehead rest 17 is a member that the forehead H of the subject P rests against, and is a member for supporting the face of the subject P so that the direction and position of the face do not move. The forehead rest 17 is suspended between the pair of measurement heads 16 from the mounting base 133. As shown in Figs. 1 and 2, the forehead rest 17 includes a forehead support bar 171 and a forehead rest main body 172. The forehead support bar 171 is a rod-shaped member that is attached so as to extend downward and forward from the mounting base 133. The forehead rest main body 172 is attached to the lower end of the forehead support bar 171, on the upper side of the pair of measurement heads 16. The forehead rest main body 172 is formed in a horizontally elongated elliptical shape having a curved surface so as to fit the forehead H of the subject P. The vertical position adjustment of the forehead rest 17 is performed by moving the arm 132 in the Y direction relative to the support 131.

[0033] The chin support device 18 is a device on which the chin C of the subject P is placed, and is a device for supporting the face of the subject P so that the direction and position of the face do not move. The ophthalmologic apparatus 100 of the first embodiment supports the face of the subject P with the chin support device 18 in addition to the forehead rest 17, thereby further improving the stability of the face of the subject P.

[0034] As described above, the chin support device 18 is detachably attached to the optical table 12. Therefore, a provider of the ophthalmic apparatus 100, such as a sales company, can provide an ophthalmic apparatus 100 with the chin support device 18 attached to the optical table 12 to a user who needs the chin support device 18, and can also provide an ophthalmic apparatus without the chin support device 18 attached to the optical table 12 to a user who does not need the chin support device 18. The provider can also provide only the chin support device 18 to a user, who can attach the chin support device 18 to an existing ophthalmic apparatus for use.

[0035] Furthermore, in the ophthalmic apparatus 100 of the first embodiment, the user himself can attach and detach the chin support device 18. Therefore, the user can use the ophthalmic apparatus 100 with the chin support device 18 attached or with the chin support device 18 detached, as necessary, in consideration of the type of examination, the condition of the subject P, preferences, and the like.

[0036] Chin support device 18 mainly includes an attachment portion 181, a chin support portion 182, and a vertical position adjustment mechanism 183. Details of each portion of chin support device 18 will be described below with reference to Figs. 3 to 5.

[0037] The mounting portion 181 is detachably attached to the optical table 12. The mounting portion 181 has an upper support member 181a arranged on the upper surface of the optical table 12, a lower support member 181b arranged on the lower surface of the optical table 12, and a connecting portion 181c connecting one end side of the upper support member 181a and the lower support member 181b, and is a member having a U-shape in a side view with the other end side of the upper support member 181a and the lower support member 181b open. The mounting portion 181 has a mounting space 181d formed by the upper support member 181a, the lower support member 181b, and the connecting portion 181c, and an opening portion 181e opened on the other end side of the upper support member 181a and the lower support member 181b. The height of the mounting space 181d is approximately the same as the thickness of the optical table 12. The front side of the optical table 12 is inserted into the mounting space 181d through the opening 181e and is sandwiched between the upper support member 181a and the lower support member 181b.

[0038] The upper support member 181a is disposed near the front end of the upper surface of the optical table 12. The lower support member 181b is formed longer in the rear direction (Z direction) than the upper support member 181a, and is screwed in near the back side (support 131) by a pair of left and right screw members 181f as shown in Fig. 4. Therefore, the chin support device 18 is stably fixed to the optical table 12 by the lower surface of the upper support member 181a and the pair of left and right screw members 181f without unexpected movement or falling off.

[0039] The chin support 182 is a member that supports the chin C, and is provided so as to protrude upward from the upper support member 181a of the attachment portion 181 toward the chin C of the subject P. As shown in Fig. 3, the chin support 182 of the first embodiment includes a base 182a extending obliquely upward from the upper support member 181a, a rectangular housing 182b extending vertically upward from the base 182a, and a chin rest 182c protruding from the housing 182b so as to be movable up and down, and has a V-shape when viewed from the side. Since the chin support 182 extends in a V-shape in this way, the depth of the optical table 12 can be shortened, the space in front of the subject P can be made wider, and the optical table 12 and the chin support device 18 can be prevented from interfering with the examination.

[0040] In Example 1 and other examples described later, each part of mounting portion 181, base 182a and housing 182b of chin support portion 182, etc. are formed from metal plate because this is easy to process and inexpensive, but the material is not limited to metal plate and may be made from resin, wood, etc., or a combination of these.

[0041] The chin rest 182c is a member on which the chin C of the subject P is placed. The chin rest 182c is formed to have a horizontally long plate-like member having a curved surface concave downward so as to fit the lower surface (contour) of the chin C, and a rod member that moves up and down.

[0042] The vertical position adjustment mechanism 183 is a member that adjusts the vertical position (height) of the chin rest 182c. The position of the entire chin support device 18 can be adjusted by moving the optical table 12 in the Y direction. However, the distance between the forehead H and the chin C of the subject P varies from person to person. Therefore, the chin support device 18 of the first embodiment is configured to adjust the vertical position (height) of the chin rest 182c with respect to the optical table 12 by the vertical position adjustment mechanism 183.

[0043] The vertical position adjustment mechanism 183 is housed in the housing 182b of the chin support 182 as shown in FIG. 5. The vertical position adjustment mechanism 183 includes a known moving mechanism 183a such as a ball spline or a rack and pinion, and height adjustment screws 183b protruding from both sides of the housing 182b. The moving mechanism 183a moves the chin rest 182c up and down according to the operation direction and operation amount of the height adjustment screw 183b. More specifically, the user can operate the moving mechanism 183a to move the chin rest 182c upward by rotating the height adjustment screw 183b, for example, clockwise, and can operate the moving mechanism 183a to move the chin rest 182c downward by rotating the height adjustment screw 183b counterclockwise.

[0044] Furthermore, the chin support device 18 is attached directly to the optical table 12, separately from the measuring head 16 suspended by the head support part 13. With this configuration, even if the measuring head 16 moves in the vertical direction, it does not affect the vertical position of the chin support device 18. The vertical position of the chin support device 18 can be freely adjusted according to the position of the chin C by the vertical position adjustment mechanism 183, separately from the measuring head 16.

[0045] The examiner's controller 27 is an information processing device that accepts input operations by the examiner (e.g., input of a subject ID, examination items, parameters, instructions, etc.) and outputs a control signal to the control unit 26. The examiner's controller 27 is composed of, for example, a tablet terminal or a smartphone equipped with a control unit (CPU), a monitor, an input unit, a microphone, a speaker, etc. The examiner's controller 27 may be a notebook personal computer, a desktop personal computer, etc., or a dedicated controller provided in the ophthalmic apparatus 100. The examiner's controller 27 communicates with the control unit 26 via communication means such as short-distance wireless or the Internet.

[0046] The subject controller that may be provided in the ophthalmologic apparatus 100 is a device used by the subject P to respond when acquiring information on the subject's eye E. The subject controller includes, for example, a keyboard, a mouse, a joystick, a touch pad, a touch panel, etc. The subject controller is connected to the control unit 26 via a wired or wireless communication path, and outputs a control signal to the control unit 26 in response to a response operation input to the subject controller.

[0047] The control unit 26 is provided on the base 11 of the main body 10, and controls each unit of the ophthalmic apparatus 100. The control unit 26 is connected to the measurement optical system 21, the drive mechanism 15, the examiner's controller 27, the subject's controller, etc., and controls them in an integrated manner.

[0048] The control unit 26 is composed of a processor such as a CPU. The control unit 26 loads a program stored in a memory such as a storage unit connected to the control unit 26 or an internal memory such as a ROM onto, for example, a RAM, thereby comprehensively controlling the operation of the ophthalmic apparatus 100 in response to operations on the examiner's controller 27 and the subject's controller.

[0049] The control unit 26 acquires eye information according to the test items, parameters, instructions, etc. input from the examiner's controller 27. The test items include the objective test and the subjective test listed above. The parameters are information necessary for the test, such as the visual acuity value, the initial value of the correction power, the optotype to be presented, the test distance, etc.

[0050] The actions of the examiner and the subject P when acquiring eye information using the ophthalmic apparatus 100 of the first embodiment configured as described above will be described as follows. The ophthalmic apparatus 100 is powered on and started up, and the control unit 26 is capable of communicating with the examiner's controller 27 and the subject's controller.

[0051] During the examination, the subject P sits on a chair or the like and faces the ophthalmologic apparatus 100. At this time, the examiner may adjust the positions (height positions) of the chin support device 18 and the measurement head 16 in the Y direction together with the optical table 12 by moving the optical table 12 up and down according to the height of the subject P or the like. Next, the subject P places his / her forehead on the forehead rest body 172 of the forehead rest 17. Next, the examiner operates the moving mechanism 183a by rotating the height adjustment screw 183b of the vertical position adjustment mechanism 183, thereby moving the chin rest 182c up and down. By this operation, the chin rest 182c is positioned so that the chin C of the subject P rests on the chin rest 182c, and the chin C of the subject P is supported by the chin rest 182c.

[0052] Therefore, the face of the subject P is appropriately fixed by the forehead rest 17 and the chin support device 18, and the subject P does not need to strain his / her neck or strongly support his / her body with his / her arms, and can take the examination in a comfortable position. When the fixation of the face of the subject P is completed, the examiner operates the examiner controller 27 to cause the main body 10 to perform an operation for acquiring eye information. The ophthalmic device 100 of the first embodiment first performs alignment. At this time, the driving mechanism 15 moves the measuring head 16 in the up / down and left / right directions and rotates according to the position of the subject's eye E, but the chin support device 18 does not move up / down or rotate together with the measuring head 16, and the chin support device 18 continues to stably support the chin C.

[0053] Then, when the alignment is completed, the objective test and subjective test of the subject's eye E are performed in the ophthalmologic apparatus 100, either automatically or by the examiner's instruction. Even during these tests, the chin support device 18 appropriately prevents the subject's face from moving unexpectedly. Therefore, even if the subject P responds verbally to the vision during the subjective test as well as during the objective test, the subject P can take the test in a comfortable position and the need to repeat the test can be reduced. In particular, for subjects P with relatively low physical strength, such as elderly people and infants, the chin C is supported by the chin support device 18 continuously even when the test is prolonged, so that the subject's face does not move unexpectedly and fatigue is reduced, allowing the subject to take the test more comfortably. Therefore, each test is performed more appropriately and efficiently.

[0054] Example 2 An ophthalmic apparatus 100 according to a second embodiment of the present disclosure will be described below with reference to Figs. 6 to 7. The ophthalmic apparatus 100 according to the second embodiment has the same basic configuration as the ophthalmic apparatus 100 according to the first embodiment shown in Fig. 1 and the like, except that the chin support device 18A shown in Figs. 6 to 7 is provided instead of the chin support device 18. For this reason, the same components as those in the first embodiment are given the same reference numerals as those in the first embodiment, and detailed descriptions are omitted. In the following, the configuration of the chin support device 18A according to the second embodiment will be mainly described. The same applies to the other embodiments described below. The chin support device 18A according to the second embodiment and the chin support devices 18B, 18C, and 18D according to the third, fourth, and fifth embodiments described below are also detachably attached to the optical table 12, similar to the chin support device 18 according to the first embodiment.

[0055] As shown in Figs. 6-7, chin support device 18A of Example 2 includes attachment portion 181, chin support portion 182, and vertical position adjustment mechanism 183. Vertical position adjustment mechanism 183 has the same configuration as in Example 1. Attachment portion 181 is a U-shaped member in side view having upper support member 181a, lower support member 181b, connecting portion 181c, mounting space 181d, and opening 181e. Lower support member 181b is elongated in the Z direction as in Example 1, and the head support portion 13 side is fixed to optical table 12 by screw member 181f (see Fig. 5).

[0056] The upper support member 181a of the second embodiment is made of a long member extending in the Z direction to the vicinity of the support pillar 131, and a pair of rail members 181g is provided on the upper portion of the upper support member 181a. The chin support unit 182 of the second embodiment is placed on the rail member 181g so as to be movable in the front-rear direction (Z direction). The rail member 181g functions as a retraction mechanism 184 for moving the chin support unit 182 to the retracted position W and retracting it when the chin support device 18 is not in use, and also functions as a front-rear position moving mechanism for adjusting the position of the chin support unit 182 in the Z direction. The retracted position W of the second embodiment is a rear position on the rail member 181g that is away from the subject P and is located near the support pillar 131. In another embodiment, a recess may be provided in the support pillar 131, and the recess may be set as the retracted position W, and the chin support unit 182 may be stored in the recess during retraction.

[0057] The chin support 182 is V-shaped in side view and includes a base 182a, a housing 182b, and a chin rest 182c, similar to Example 1. The chin support 182 of Example 2 includes wheels, a slide ball, etc. (not shown), and is manually movable in the Z direction on a rail member 181g of an upper support member 181a.

[0058] In the ophthalmic apparatus 100 of the second embodiment configured as described above, the chin support 182 is disposed at one end of the rail member 181g on the subject P side during examination, as shown by a solid line in Fig. 7. The subject P facing the ophthalmic apparatus 100 places his / her forehead on the forehead rest main body 172 of the forehead rest 17. The examiner moves the optical table 12 in the vertical direction as necessary to adjust the position in the Y direction. Furthermore, the examiner can also move the chin support 182 in the front-rear direction according to the position of the subject P's face to adjust the position of the chin support 182 in the Z direction.

[0059] Next, the examiner rotates the height adjustment screw 183b to operate the moving mechanism 183a and move the chin rest 182c up and down. This operation positions the chin rest 182c so that the chin C of the subject P rests on the chin rest 182c, and the chin C of the subject P is supported by the chin rest 182c. Therefore, in the ophthalmologic apparatus 100 of the second embodiment as well, the face of the subject P is stably fixed by the forehead rest 17 and the chin support device 18A, and the subject P can be examined more comfortably in a relaxed position, and the objective examination and the subjective examination can be performed more appropriately and efficiently.

[0060] Furthermore, the ophthalmologic apparatus 100 of the second embodiment is provided with a retraction mechanism 184, so that the examination can be performed without using the chin support portion 182. In this case, as shown by the dashed line in Fig. 7, the examiner moves the chin support portion 182 to the retracted position W. The subject P can undergo the examination with his / her face supported only by the forehead rest portion 17. Furthermore, by retracting the chin support portion 182 from the front of the optical table 12, the upper surface of the optical table 12 is opened, and the subject P can undergo the examination by, for example, placing his / her hands on the upper surface of the optical table 12.

[0061] The examiner can select whether to use the chin support part 182 depending on the condition of the subject P, for example. More specifically, in the case of the subject P who is relatively physically strong and can keep his / her face still by himself / herself, the examination can be performed without using the chin support part 182. On the other hand, in the case of the subject P who is relatively physically weak and has difficulty in maintaining the same posture for a long time, such as the elderly, the examination can be performed using the chin support part 182. Furthermore, it is also possible to select whether to use the chin support part 182 depending on the type of examination. More specifically, by using the chin support part 182 to reliably fix the face during the objective examination, the subject P can perform the objective examination with higher accuracy. On the other hand, by not using the chin support part 182 during the objective examination, the subject P can respond verbally more smoothly without the movement of the chin C being restricted. Even in this case, the face of the subject P is properly supported by the forehead support part 17. Therefore, the subject P can be examined more comfortably and appropriately.

[0062] Example 3 An ophthalmic apparatus 100 according to a third embodiment of the present disclosure will be described below with reference to Fig. 8. The ophthalmic apparatus 100 according to the third embodiment has the same basic configuration as the ophthalmic apparatus 100 according to the first embodiment shown in Fig. 1 and the like, except that the chin support device 18 is replaced with a chin support device 18B shown in Fig. 8.

[0063] The chin support device 18B of the third embodiment includes an attachment portion 181, a chin support portion 182, and a vertical position adjustment mechanism 183. The vertical position adjustment mechanism 183 has the same configuration as that of the first embodiment. The attachment portion 181 is a U-shaped member in a side view, and includes an upper support member 181a, a lower support member 181b, a connecting portion 181c, a mounting space 181d, and an opening 181e. The lower support member 181b is elongated in the Z direction as in the first embodiment, and the head support portion 13 side is fixed to the optical table 12 by a screw member 181f (see FIG. 5).

[0064] The chin support 182 is V-shaped in side view and includes a base 182a, a housing 182b, and a chin rest 182c, as in the first embodiment. Furthermore, in the chin support 182 of the third embodiment, the lower end of the housing 182b is pivotally supported by a pivot member 182d on the base 182a so as to be rotatable. The housing 182b, the base 182a, and the pivot member 182d function as a retraction mechanism 184 for the chin support 182. The chin support 182 is rotated in the front-rear direction around the pivot member 182d, and is disposed at a position where it can support the chin C of the subject P as shown by the solid line in FIG. 8, or at a retracted position W on the upper surface of the optical table 12 as shown by the dashed line in FIG. 8. Note that a recess may be provided on the upper surface of the optical table 12, and the recess may be set as the retracted position W, and the chin support 182 may be stored in the recess during retraction.

[0065] In the ophthalmic apparatus 100 of the third embodiment having the above configuration, the chin support 182 rises upward in an initial state as shown by a solid line in FIG. 8, and is capable of supporting the chin C of the subject P. The subject P facing the ophthalmic apparatus 100 places his / her forehead on the forehead rest body 172 of the forehead rest 17. The examiner moves the optical table 12 up and down as necessary to adjust the position in the Y direction. Next, the examiner operates the moving mechanism 183a by rotating the height adjustment screw 183b, and moves the chin rest 182c up and down. This operation positions the chin rest 182c so that the chin C of the subject P rests on the chin rest 182c, and the chin C of the subject P is supported by the chin rest 182c. Therefore, also in the ophthalmic apparatus 100 of the third embodiment, the face of the subject P is stably fixed by the forehead rest 17 and the chin support device 18B, the subject P can be more comfortably examined in a relaxed posture, and the objective examination and the subjective examination can be performed more appropriately and efficiently. Also, the ophthalmic apparatus 100 of the third embodiment is provided with the retraction mechanism 184, so that, as in the second embodiment, it is possible to select whether or not to use the chin support device 182 depending on the condition of the subject P, the type of examination, and the like, and the chin support device 182 can be more easily retracted by rotating the chin support device 182.

[0066] Example 4 An ophthalmic apparatus 100 according to a fourth embodiment of the present disclosure will be described below with reference to Fig. 9. The ophthalmic apparatus 100 according to the fourth embodiment has the same basic configuration as the ophthalmic apparatus 100 according to the first embodiment shown in Fig. 1 etc., except that the chin support device 18C shown in Fig. 9 is provided instead of the chin support device 18.

[0067] The chin support device 18C of the fourth embodiment includes a mounting portion 181, a chin support portion 182, and a vertical position adjustment mechanism 183. The chin support portion 182 and the vertical position adjustment mechanism 183 have the same configuration as those of the first embodiment. The mounting portion 181 of the third embodiment is a so-called vice type, and is a member having an upper support member 181a, a lower support member 181b, a connecting portion 181c, a mounting space 181d, and an opening 181e, and is U-shaped (C-shaped) in a side view. The interval between the upper support member 181a and the lower support member 181b, that is, the height of the mounting space 181d, is larger than the height of the mounting space 181d of the first embodiment, etc., and can be mounted on optical tables 12 of various thicknesses. The lower support member 181b is screwed with a bolt portion 181h. The bolt portion 181h has a dish portion 181i that is placed on the underside of the optical table 12 at its upper end that is placed within the mounting space 181d, and a handle portion 181j is connected to its lower end that protrudes outside the mounting space 181d.

[0068] The chin support device 18B of the fourth embodiment is attached to the optical table 12 as follows. First, a user such as an examiner inserts the optical table 12 into the mounting space 181d of the mounting portion 181, and places the upper support member 181a on the upper surface of the optical table 12. Next, the user operates the handle portion 181j to rotate the bolt portion 181h, and raises the dish portion 181i so that it contacts the lower surface of the optical table 12. The user further operates the handle portion 181j to tighten the optical table 12 with the upper support member 181a and the dish portion 181i. This causes the chin support device 18B to be attached to the optical table 12. The user can also easily remove the chin support device 18B from the optical table 12 by performing the reverse operation.

[0069] The subject P facing the ophthalmic apparatus 100 of the fourth embodiment configured as described above places his / her forehead on the forehead rest body 172 of the forehead rest 17. The examiner moves the optical table 12 vertically as necessary to adjust the position in the Y direction. Next, the examiner operates the moving mechanism 183a by rotating the height adjustment screw 183b, and moves the chin rest 182c up and down. By this operation, the chin rest 182c is positioned so that the chin C of the subject P is placed on the chin rest 182c, and the chin C of the subject P is supported by the chin rest 182c. Therefore, in the ophthalmic apparatus 100 of the fourth embodiment, the face of the subject P is stably fixed by the forehead rest 17 and the chin support device 18C, and the subject P can be examined more comfortably in a relaxed position, and the objective examination and the subjective examination can be performed more appropriately and more efficiently. Since the height of the dish portion 181i of the chin support device 18C of the fourth embodiment can be adjusted, the chin support device 18C can be attached to optical tables 12 of various thicknesses, improving versatility. In addition, the user can select whether or not to use the chin support device 18C as needed, taking into consideration the type of examination, the subject's condition, preferences, etc., and can easily attach and detach the chin support device 18B to and from the optical table 12 depending on the selection result.

[0070] Example 5 An ophthalmic apparatus 100 according to a fifth embodiment of the present disclosure will be described below with reference to Fig. 10. The ophthalmic apparatus 100 according to the fifth embodiment has the same basic configuration as the ophthalmic apparatus 100 according to the first embodiment shown in Fig. 1 etc., except that the chin support device 18 is replaced with a chin support device 18D shown in Fig. 10.

[0071] The chin support device 18D of the embodiment 5 includes an attachment part 181, a chin support part 182, and a vertical position adjustment mechanism 183. The attachment part 181 and the chin support part 182 have the same configuration as in the embodiment 1. In the vertical position adjustment mechanism 183 of the above-mentioned embodiments 1 to 4, the examiner manually rotates the height adjustment screw 183b to adjust the height of the chin rest 182c. In contrast, the vertical position adjustment mechanism 183 of the embodiment 5 is configured to automatically adjust the height of the chin rest 182c under the control of the control unit 26. Operation buttons and the like of the vertical position adjustment mechanism 183 are displayed on an operation screen displayed on the monitor of the examiner's controller 27.

[0072] The vertical position adjustment mechanism 183 of the fifth embodiment includes an electric drive unit 183d having an electric motor, an encoder, etc., and a cable 183e, etc. A terminal 183f at the tip of the cable 183e is connected to an electronic circuit board on which a CPU, etc., which is the control unit 26, is provided. Instruction signals and power from the control unit 26 are sent to the electric drive unit 183d by the cable 183e.

[0073] The subject P facing the ophthalmic apparatus 100 of the fifth embodiment configured as above places his / her forehead on the forehead rest body 172 of the forehead rest 17. The examiner moves the optical table 12 vertically as necessary to adjust the position in the Y direction. Next, the examiner operates the examiner controller 27 to adjust the height of the chin support device 18D. In response to this operation input, the control unit 26 drives and controls the electric drive unit 183d to move the chin rest 182c vertically. As a result, the chin rest 182c is positioned so that the chin C of the subject P rests on the chin rest 182c, and the chin C of the subject P is supported by the chin rest 182c. Therefore, in the ophthalmic apparatus 100 of the fifth embodiment as well, the face of the subject P is stably fixed by the forehead rest 17 and the chin support device 18D, and the subject P can be examined more comfortably in a relaxed position, and objective examination and subjective examination can be performed more appropriately and more efficiently. Furthermore, the examiner can easily and appropriately adjust the height of the chin support portion 182 by operating the examiner controller 27 even if the examiner is in a position away from the ophthalmologic apparatus 100 .

[0074] As a modified example, vertical position adjustment mechanism 183 including electric drive unit 183d as in Example 5 may be provided in chin support devices 18A, 18B, and 18C in Examples 2 to 4. In addition, retraction mechanism 184 of chin support devices 18A and 18B in Examples 2 and 3 manually moves or rotates chin support unit 182 in the front-rear direction, but is not limited to manual, and may be moved or rotated automatically under the control of control unit 26 using a known electric mechanism.

[0075] Example 6 An ophthalmic apparatus 100E according to a sixth embodiment of the present disclosure will be described below with reference to Fig. 11. The ophthalmic apparatus 100E according to the sixth embodiment mainly includes a main body 10E and a chin support device 18E, as shown in Fig. 11. The ophthalmic apparatus 100E according to the sixth embodiment is placed on an optical table 12E that can be raised and lowered by a known driving mechanism, but may also be placed on an office desk or the like.

[0076] The main body 10E includes a stand 30, a measurement head 31, a monitor unit 32, and a forehead rest unit 33. The stand 30 is placed on an optical table 12E. The measurement head 31 is supported by the stand 30 so as to be movable in the horizontal and vertical directions with respect to the subject's eye E, i.e., the X direction, the Y direction, and the Z direction (hereinafter referred to as "XYZ directions").

[0077] 11, the main body 10E includes an XYZ driving mechanism 34 and a control unit 35 therein. The XYZ driving mechanism 34 is a mechanism for driving the measurement head 31 in the XYZ directions, and may be a known moving mechanism such as a stepping motor. The control unit 35 is composed of a processor such as a CPU, and controls the overall operation of the ophthalmic apparatus 100E. The control unit 35 is electrically connected to the measurement optical system 36 of the measurement head 31, the monitor unit 32, the XYZ driving mechanism 34, the chin support device 18E, and the like, and controls the driving of these components.

[0078] The measurement head 31 has a built-in measurement optical system 36 for known observation and photography, as indicated by the dashed line in Fig. 11. The measurement optical system 36 includes optical members such as optical lenses and an imaging element, a drive mechanism for driving the optical members, etc. The measurement optical system 36 enables the examiner to observe and photograph the anterior segment, cornea, fundus, etc. of the subject's eye E of the subject P.

[0079] The monitor unit 32 is attached to the top of the measurement head 31. The monitor unit 32 is made of a liquid crystal display and has a touch panel type display surface on which an image of the subject's eye and operation buttons and the like are displayed. The examiner can drive the measurement head 31 by operating the display surface (operation unit) of the monitor unit 32. Under the control of the control unit 35, the monitor unit 32 displays an image on the display surface and outputs an electrical signal to the control unit 35 in response to the operation of the display surface by the examiner.

[0080] The monitor unit 32 is attached so as to be rotatable about a horizontal axis (about the X-axis or Z-axis) and a vertical axis (about the Y-axis) to a support unit 32a fixed to one edge of the top of the measurement head 31. With this configuration, the examiner can position the display surface of the monitor unit 32 at a desired angle and direction depending on the examiner's position, posture, eye level, etc.

[0081] The forehead rest 33 is provided on the pedestal 30. The forehead rest 33 is composed of a pair of pillars 33a protruding upward from both sides of the pedestal 30, and a forehead rest main body 33b connected to the upper ends of the pair of pillars 33a.

[0082] The chin support device 18E of the sixth embodiment is detachably attached to the pedestal 30. The chin support device 18E includes an attachment portion 181, a chin support portion 182, and a vertical position adjustment mechanism 183. The chin support portion 182 of the sixth embodiment includes a housing 182b that is long in the vertical direction, and a chin rest 182c that protrudes from the housing 182b so as to be movable up and down. The attachment portion 181 is provided behind the lower end of the housing 182b (the side facing the main body portion 10E). The attachment portion 181 is made of, for example, a magnet provided on the housing 182b. The magnet is attracted to a metal part of the pedestal 30 or a magnet provided on the pedestal 30, whereby the chin support device 18E is attached to the pedestal 30. Alternatively, the attachment portion 181 may be made of an engagement protrusion provided on the housing 182b, and the engagement protrusion may be engaged with an engagement receiving portion provided on the pedestal 30.

[0083] The vertical position adjustment mechanism 183 of the sixth embodiment is built into the housing 182b, and includes an electric drive unit 183d having an electric motor, an encoder, and the like, and a cable 183e, as in the fifth embodiment. A terminal 183f at the tip of the cable 183e is connected to a socket (port) 30a provided in the stand 30, and is connected to the control unit 35 via a cable (not shown) connected to the socket 30a. Instruction signals and power from the control unit 35 are sent to the electric drive unit 183d by the cable 183e.

[0084] The mounting portion 181 of the chin support device 18E of the sixth embodiment may have the same configuration as the mounting portion 181 of the chin support devices 18 to 18D of the first to fifth embodiments. Furthermore, a chin support device having the same configuration as the chin support devices 18 to 18D according to the first to fifth embodiments may be detachably mounted on the stand 30 of the ophthalmic apparatus 100E of the sixth embodiment. Alternatively, the chin support devices 18 to 18D of the first to fifth embodiments may be mounted on the optical table 12E on which the ophthalmic apparatus 100E of the sixth embodiment is placed.

[0085] The subject P facing the ophthalmic apparatus 100E of the sixth embodiment having the above configuration places his / her forehead on the forehead rest body 33b of the forehead rest 33. The examiner adjusts the position in the Y direction by moving the optical table 12E vertically as necessary. Next, the examiner operates the operation screen displayed on the display surface of the monitor unit 32 to adjust the height of the chin support device 18E. In response to this operation input, the control unit 35 drives and controls the electric drive unit 183d to move the chin rest 182c vertically. As a result, the chin rest 182c is positioned so that the chin C of the subject P rests on the chin rest 182c, and the chin C of the subject P is supported by the chin rest 182c. Therefore, in the ophthalmic apparatus 100E of the sixth embodiment, the face of the subject P is stably fixed by the forehead rest 33 and the chin support device 18E, and the subject P can be examined more comfortably in a relaxed position, and objective examination and subjective examination can be performed more appropriately and more efficiently.

[0086] As described above, the chin support devices 18, 18A, 18B, 18C, and 18D according to the first to fifth embodiments are chin support devices detachably attached to the optical table 12 included in the ophthalmic apparatus 100 that acquires information on the subject's eye E. The chin support device 18 and the like include an attachment portion 181 that is detachably attached to the optical table 12, and a chin support portion 182 that protrudes from the attachment portion 181 toward the chin C of the subject P and supports the chin C. The ophthalmic apparatus 100 according to each of the above embodiments includes a measurement head 16 having a measurement optical system 21 for acquiring information on the subject's eye E, an optical table 12 that supports the measurement head 16, and any one of the chin support devices 18 and the like. These chin support devices 18 and the like are detachably attached to the optical table 12.

[0087] The chin support device 18E according to the sixth embodiment is a chin support device that is detachably attached to the pedestal 30 that is included in the ophthalmic apparatus 100E that acquires information on the subject's eye E and supports the measurement head 31 so as to be movable in the horizontal and vertical directions. The chin support device 18E includes an attachment portion 181 that is detachably attached to the pedestal 30, and a chin support portion 182 that protrudes from the attachment portion 181 toward the chin C of the subject P and supports the chin C. The ophthalmic apparatus 100E according to the sixth embodiment includes the pedestal 30, a measurement head 16 that has a measurement optical system 21 for acquiring information on the subject's eye E and is supported by the pedestal 30 so as to be movable in the vertical direction relative to the subject's eye E, and any one of the chin support devices 18 to 18E. These chin support devices 18 to 18E are detachably attached to the pedestal 30.

[0088] Therefore, the chin support devices 18 to 18E of the above embodiments can stably fix the face of the subject P and prevent the face from moving unexpectedly. Therefore, the ophthalmic apparatus 100, 100E of the above embodiments equipped with such a chin support device 18 etc. can more stably support the face of the subject P and can obtain information on the subject's eye E more appropriately and efficiently. As a result, the subject P can obtain information on the subject's eye E more comfortably and appropriately.

[0089] Moreover, the chin support devices 18A and 18B of the above-mentioned second and third embodiments include a retraction mechanism 184 that retracts the chin support part 182 to a predetermined retraction position W of the optical table 12. As a result, the ophthalmologic apparatus 100 of the second and third embodiments can select whether or not to use the chin support part 182 when performing an examination. When the chin support part 182 is not used, the chin support part 182 is retracted to the retraction position W, so that the upper surface of the optical table 12 becomes wider, making it easier for the subject P to place his / her hands, and easier to place examination equipment, subject controllers, and the like. Furthermore, when performing a subjective examination, the subject P can respond verbally more smoothly without the movement of the chin C being restricted, so that the examination can be performed more comfortably and appropriately.

[0090] In each of the above embodiments, the mounting portion 181 includes an upper support member 181a disposed on the upper surface of the optical table 12 (or the frame 30), a lower support member 181b disposed on the lower surface of the optical table 12, a connecting portion 181c connecting one side of the upper support member 181a and the lower support member 181b, and a mounting space 181d configured with the upper support member 181a, the lower support member 181b, and the connecting portion 181c into which the optical table 12 (or the frame 30) is inserted. With this configuration, the user can easily attach and detach the chin support device 18, etc. to and from the optical table 12 (or the frame 30) by inserting and removing the optical table 12 (or the frame 30) into and from the mounting space 181d. In addition, the chin support device 18, etc. can be stably attached to the optical table 12 (or the frame 30) by sandwiching the optical table 12 (or the frame 30) between the upper support member 181a and the lower support member 181b.

[0091] Moreover, the chin support device 18 etc. of each of the above-mentioned embodiments includes a vertical position adjustment mechanism 183 capable of adjusting the vertical position of the chin support portion 182. With this configuration, the vertical position of the chin support portion 182 can be adjusted according to the position of the chin C of the subject P, and the chin support portion 182 can support the chin C more stably.

[0092] The ophthalmologic apparatus 100 of the above-mentioned Examples 1 to 5 includes a measurement optical system 21, an image acquisition unit that acquires an anterior eye image on the optical axis of the measurement optical system of the subject's eye E, and a visual target presenting unit that presents a visual target to the subject's eye E, and includes a pair of measurement heads 16 provided on the left and right corresponding to the left and right subjects' eyes E, a head support unit 13 that is provided on the optical table 12 and supports the pair of measurement heads 16 by suspending them individually, and a drive mechanism 15 that moves the measurement heads 16 in the vertical and horizontal directions and rotates them about axes parallel to the vertical direction and axes parallel to the horizontal direction as rotation axes. The measurement heads 16 are suspended from the head support unit 13 via the drive mechanism 15.

[0093] With this configuration, the main body 10 is not disposed in front of the body of the subject P (more specifically, on the optical table 12), and a space is formed. Therefore, the subject P can undergo the examination in a comfortable position without being hindered by the main body 10, and furthermore, the subject P can undergo the examination more stably and efficiently while supporting his / her body by placing his / her hands on the optical table 12.

[0094] Moreover, the ophthalmologic apparatus 100 of the above-mentioned Examples 1 to 5 can obtain information on the subject's eye E for both eyes simultaneously or one eye at a time using a pair of measurement heads 16, and the measurement heads 16 are freely moved by the drive mechanism 15, allowing more detailed and more appropriate acquisition of information on the subject's eye E. Furthermore, the chin support device 18 etc. attached to the optical table 12 can maintain stable support of the chin C without being affected by the movement of the measurement heads 16.

[0095] The above describes the ophthalmic device of the present disclosure based on examples and modified examples. However, the specific configuration is not limited to these examples and modified examples, and design changes and additions are permitted as long as they do not deviate from the gist of the invention related to each claim in the scope of the claims.

[0096] As a modified example of the ophthalmic device, the ophthalmic device may be configured to include a measurement head having a measurement optical system including a plurality of test lenses selectively arranged in front of the subject's eye E, and a visual target presenting unit that presents a visual target to the subject's eye. More specifically, the ophthalmic device may be an ophthalmic device equipped with a phoropter head and a visual target presenting unit as shown in the ophthalmic device described in JP 2023-048902 A. The chin support devices 18, 18A, 18B, 18C, and 18D as in Examples 1 to 5 can be detachably attached to the optical table of such an ophthalmic device. As a result, the ophthalmic device of the modified example supports the face of the subject P more stably, as in Example 1, etc., so that the subject P can be examined in a comfortable position, and information on the subject's eye E can be obtained more appropriately and efficiently.

[0097] Further, although the ophthalmologic apparatus 100 in each of the above-mentioned embodiments and modified examples includes a pair of measurement heads 16, this is not limited thereto, and the apparatus may also be configured to include only one measurement head 16 and acquire eye information for each eye.

[0098] In addition, the following will be further disclosed with respect to the above description of the first to fifth embodiments and the modified examples. (1) A chin support device that is detachably attached to an optical table of an ophthalmic apparatus that acquires information about a subject's eye, a mounting portion that is detachably attached to the optical table; a chin support portion that protrudes from the attachment portion toward the subject's chin and supports the chin. (2) The chin support device according to (1) above, further comprising a retraction mechanism for retracting the chin support portion to a predetermined retraction position on the optical table. (3) The chin support device described in (1) or (2) is characterized in that the mounting portion includes an upper support member to be placed on the upper surface of the optical table, a lower support member to be placed on the underside of the optical table, a connecting portion connecting one side of the upper support member and the lower support member, and a mounting space formed by the upper support member, the lower support member and the connecting portion and into which the optical table is inserted. (4) A vertical position adjustment mechanism is provided that can adjust the vertical position of the chin support unit. The chin support device according to any one of (1) to (3) above, (5) a measurement head having a measurement optical system for acquiring information on the subject's eye; an optical table supporting the measurement head; The chin support device according to any one of (1) to (4), 13. An ophthalmologic apparatus according to claim 12, wherein said chin support device is detachably attached to said optical table. (6) the measurement optical system; an image acquisition unit that acquires an image of an anterior segment of the subject's eye on the optical axis of the measurement optical system; and a pair of measurement heads each having an optotype presenting unit for presenting an optotype to the subject's eye, the measurement heads being provided on the left and right sides corresponding to the left and right subjects' eyes; a head support portion provided on the optical table and configured to individually suspend and support the pair of measuring heads; a drive mechanism for moving the measuring head in a vertical direction and a horizontal direction and rotating the measuring head about an axis parallel to the vertical direction and an axis parallel to the horizontal direction as a rotation axis, The ophthalmologic apparatus according to (5) above, wherein the measurement head is suspended from the head support portion via the drive mechanism. (7) The measurement head has the measurement optical system including a plurality of test lenses selectively disposed in front of the subject's eye; The ophthalmologic apparatus according to (5) above, further comprising: an optotype presenting unit that presents an optotype to the subject's eye.

[0099] In addition, the present disclosure further discloses the following. (1) A chin support device is provided in a stand included in an ophthalmic apparatus for acquiring information on a subject's eye, the chin support device being detachably attached to the stand on which a measurement head for acquiring information on the subject's eye is supported so as to be movable in horizontal and vertical directions, A mounting portion that is detachably attached to the stand; a chin support portion that protrudes from the attachment portion toward the subject's chin and supports the chin. (2) The chin support device according to (1) above, further comprising a retraction mechanism for retracting the chin support portion to a predetermined retraction position of the pedestal. (3) The chin support device described in (1) or (2) above, characterized in that the mounting portion includes an upper support member to be placed on the upper surface of the stand, a lower support member to be placed on the lower surface of the stand, a connecting portion connecting one side of the upper support member and the lower support member, and a mounting space formed by the upper support member, the lower support member, and the connecting portion and into which the optical table is inserted. (4) A vertical position adjustment mechanism is provided that can adjust the vertical position of the chin support unit. The chin support device according to any one of (1) to (3) above, (5) a stand; a measurement head having a measurement optical system for acquiring information of the subject's eye, the measurement head being supported by the stand so as to be movable in a direction perpendicular to the subject's eye; The chin support device according to any one of (1) to (4), The ophthalmologic apparatus according to claim 1, wherein the chin support device is detachably attached to the pedestal. [Explanation of symbols]

[0100] 12: Optical table 13: Head support 15: Drive mechanism 16, 31: Measuring head 18, 18A, 18B, 18C, 18D, 18E: Chin support device 21: Measurement optical system 30: Stand 100: Ophthalmic equipment 181: Mounting portion 181a: Upper support member 181b: Lower support member 181c: Connection portion 181d: mounting space 182: chin support 183:Vertical position adjustment mechanism 184:Evacuation mechanism C: Jaw E: Examined eye P: Subject W: Evacuation position

Claims

1. a chin support device that is detachably attached to an optical table of an ophthalmic apparatus that acquires information of a subject's eye, or to a stand on which a measurement head for acquiring information of the subject's eye is supported so as to be movable in horizontal and vertical directions, a mounting portion that is detachably attached to the optical table or the stand; a chin support portion that protrudes from the attachment portion toward the subject's chin and supports the chin. A chin support device comprising:

2. A retraction mechanism is provided for retracting the chin support to a predetermined retraction position of the optical table or the pedestal.

2. The chin support device of claim 1.

3. The mounting portion includes an upper support member disposed on an upper surface of the optical table or the frame, a lower support member disposed on a lower surface of the optical table or the frame, a connecting portion connecting one side of the upper support member and the lower support member, and a mounting space configured by the upper support member, the lower support member, and the connecting portion and into which the optical table or the frame is inserted.

2. The chin support device of claim 1.

4. A vertical position adjustment mechanism is provided that can adjust the vertical position of the chin support unit.

2. The chin support device of claim 1.

5. a measurement head having a measurement optical system for acquiring information on the subject's eye; an optical table supporting the measurement head; The chin support device according to any one of claims 1 to 4, The chin support device is removably attached to the optical table. An ophthalmic apparatus comprising:

6. The measurement optical system, an image acquisition unit that acquires an image of an anterior segment of the subject's eye on the optical axis of the measurement optical system; and a pair of measurement heads each having an optotype presenting unit for presenting an optotype to the subject's eye, the measurement heads being provided on the left and right sides corresponding to the left and right subjects' eyes; a head support portion provided on the optical table and configured to individually suspend and support the pair of measuring heads; a drive mechanism for moving the measuring head in a vertical direction and a horizontal direction and rotating the measuring head about an axis parallel to the vertical direction and an axis parallel to the horizontal direction as a rotation axis, The measuring head is suspended from the head support part via the driving mechanism.

6. An ophthalmic apparatus according to claim 5,

7. the measurement head having the measurement optical system including a plurality of test lenses selectively disposed in front of the subject's eye; and a visual target presenting unit that presents a visual target to the subject's eye.

6. An ophthalmic apparatus according to claim 5.

8. A stand; a measurement head having a measurement optical system for acquiring information of the subject's eye and supported by the stand so as to be movable in horizontal and vertical directions with respect to the subject's eye; The chin support device according to any one of claims 1 to 4, The chin support device is removably attached to the cradle. An ophthalmic apparatus comprising:

Images