Ophthalmologic device and ophthalmologic system

Abstract

Provided are an ophthalmologic apparatus and an ophthalmologic system, the ophthalmologic apparatus including a head portion having an optical system capable of receiving light reflected by a subject's eye, a drive mechanism movably holding the head portion, a coordinated position detection portion for detecting a relative position of the subject's eye and the head portion, and a control portion for controlling the drive mechanism; the driving mechanism is provided with at least two arms which are connected in a rotatable manner, at least two first rotating supporting mechanisms which are used for enabling the machine head part to move, at least three second rotating supporting mechanisms and at least five driving parts which are used for driving the rotating supporting mechanisms; the control unit is capable of controlling the drive unit by using the measurement result of the coordinated position measurement unit so as to align the headpiece with the eye to be measured.

Description

[0001] This application is a divisional application of the application with the application date of July 24, 2020, application number 2020107235380, and title "Ophthalmic Device and Ophthalmic System". Technical Field

[0002] The present disclosure relates to an ophthalmic device and an ophthalmic system for measuring, photographing, etc. a subject eye (eye to be detected). Background Art

[0003] Ophthalmic devices include an ophthalmic measurement device for measuring characteristics of a subject eye or an ophthalmic photographing device for acquiring an image of a subject eye, etc. In order to measure or photograph a subject eye, it is necessary to adjust the position of the subject eye (subject) and the ophthalmic device. Thus, an ophthalmic device that can move the position of the ophthalmic device relative to the subject eye has been proposed.

[0004] In Patent Document 1, there is disclosed an ophthalmic device in which a device main body portion is provided on a base portion through a drive portion. In the device main body portion described in Patent Document 1, an intraocular pressure measurement portion for measuring the intraocular pressure of a subject eye and an eye characteristic measurement portion for measuring other optical characteristics (eye characteristics) of a subject eye are provided.

[0005] The drive portion described in Patent Document 1 moves the device main body portion relative to the base portion in the vertical direction (Y-axis direction), the front-back direction (Z-axis direction), and the left-right direction (X-axis direction) orthogonal to these directions. Specifically, the drive portion described in Patent Document 1 has a Y-axis drive portion, a Z-axis drive portion, and an X-axis drive portion, and functions as a sliding mechanism that slidably moves the device main body portion relative to the base portion in the vertical direction (Y-axis direction), the front-back direction (Z-axis direction), and the left-right direction (X-axis direction).

[0006] Prior Art Documents

[0007] Patent Documents

[0008] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2018-51337 Summary of the Invention

[0009] Problems to be Solved by the Invention

[0010] However, a inspection portion including a measurement portion or a photographing portion, etc. is provided on the device main body portion. If a sliding mechanism for slidably moving the device main body portion is provided, there is a problem that the scale of the drive portion becomes large and it is difficult to miniaturize the ophthalmic device. In addition, if this mechanism is used to increase the movable range of the device main body portion and improve the degree of freedom, there is a problem that the drive portion becomes even larger. In addition, if a mechanism for freely changing the orientation or inclination of the inspection portion is provided, the device becomes even larger.

[0011] The present disclosure is completed to solve such problems, and an object thereof is to provide a small-sized ophthalmic device and an ophthalmic system with increased positioning freedom of a measurement unit.

[0012] Means for solving the problems

[0013] To achieve the above object, the ophthalmic device of the present disclosure is for acquiring optical information of an eye to be measured, and includes: a head unit having an optical system capable of receiving light reflected by the eye to be measured; a drive mechanism that holds the head unit movably; a coordination position detection unit for detecting a relative position between the eye to be measured and the head unit; and a control unit that controls the drive mechanism. The drive mechanism includes: at least two arms rotatably connected; at least two first rotation support mechanisms capable of rotating about a first axis to move the head unit; at least three second rotation support mechanisms capable of rotating about a second axis different from the direction of the first axis; and at least five drive units for driving the first rotation support mechanisms and the second rotation support mechanisms. The control unit can use the detection result of the coordination position detection unit to control the drive units so that the head unit is aligned with the eye to be measured.

[0014] In addition, to achieve the above object, the ophthalmic system of the present disclosure is for acquiring optical information of an eye to be measured, and includes: a head unit having an optical system capable of receiving light reflected by the eye to be measured; a drive mechanism that holds the head unit movably; a coordination position detection unit for detecting a relative position between the eye to be measured and the head unit; a control unit that controls the drive mechanism; and a terminal device that receives information related to the light received by the optical system through a network. The drive mechanism includes: at least two arms rotatably connected; at least two first rotation support mechanisms capable of rotating about a first axis to move the head unit; at least three second rotation support mechanisms capable of rotating about a second axis different from the direction of the first axis; and at least five drive units for driving the first rotation support mechanisms and the second rotation support mechanisms. The control unit can use the detection result of the coordination position detection unit to control the drive units so that the head unit is aligned with the eye to be measured.

[0015] In addition, the present invention provides an ophthalmic device for acquiring optical information of an eye to be measured, which includes: a head unit having an optical system capable of receiving light reflected by the eye to be measured; a driving mechanism that holds the head unit in a movable manner; and a control unit that controls the driving mechanism. The driving mechanism includes: at least two arms including a first arm portion and a second arm portion connected in a rotatable manner; at least two first rotation support mechanisms including a first mechanism portion and a second mechanism portion that can rotate about a first axis to enable the head unit to move; at least three second rotation support mechanisms including a third mechanism portion, a fourth mechanism portion, and a fifth mechanism portion that can rotate about a second axis different from the direction of the first axis; a driving unit for driving the first rotation support mechanism and the second rotation support mechanism; and a first support portion, a second support portion, a third support portion, and a fourth support portion. The first mechanism portion is provided on the first support portion, the third mechanism portion is connected to the first support portion, the first arm portion is connected to the third mechanism portion, the fourth mechanism portion is connected to the first arm portion, the third support portion is connected to the fourth mechanism portion, the second arm portion is connected to the third support portion, the fifth mechanism portion is connected to the second arm portion, the fourth support portion is connected to the fifth mechanism portion, the second mechanism portion is connected to the fourth support portion, the second support portion supports the head unit, and the control unit causes the first mechanism portion and the second mechanism portion to rotate synchronously about the first axis and causes the third mechanism portion, the fourth mechanism portion, and the fifth mechanism portion to rotate synchronously about the second axis, thereby aligning the head unit with the eye to be measured while maintaining the optical axis of the reflected light from the deflection member provided on the head unit passing through the eye to be measured.

[0016] The present invention also provides an ophthalmic system including: the above-described ophthalmic device and a terminal device that receives information related to the light received by the optical system through a network.

[0017] Effects of the Invention

[0018] According to the content of the present disclosure using the above means, it is possible to provide a small-sized ophthalmic device and an ophthalmic system with increased positioning freedom of the measurement unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram showing an ophthalmic device according to a first embodiment of the present disclosure.

[0020] Figure 2 It is a perspective view showing an ophthalmic device according to a first embodiment of the present disclosure.

[0021] Figure 3 is a block diagram showing an ophthalmic device according to a first embodiment of the present disclosure.

[0022] Figure 4 is a schematic structural diagram showing a modified example of a drive mechanism of an ophthalmic device according to a first embodiment of the present disclosure.

[0023] Figure 5 is a perspective view showing another modified example of an ophthalmic device according to a first embodiment of the present disclosure.

[0024] Figure 6 is a perspective view showing a part of an ophthalmic device according to a second embodiment of the present disclosure.

[0025] Figure 7 is a block diagram showing an ophthalmic device according to a second embodiment of the present disclosure.

[0026] Figure 8A is a top schematic view showing the operation of the head portion of an ophthalmic device according to a second embodiment of the present disclosure.

[0027] Figure 8B is a top schematic view showing the operation of the head portion of an ophthalmic device according to a second embodiment of the present disclosure.

[0028] Figure 9A is a side schematic view showing the operation of the head portion of an ophthalmic device according to a second embodiment of the present disclosure.

[0029] Figure 9B is a side schematic view showing the operation of the head portion of an ophthalmic device according to a second embodiment of the present disclosure.

[0030] Figure 10 is a block diagram showing an ophthalmic system according to a third embodiment of the present disclosure. Detailed Embodiments

[0031] Hereinafter, embodiments of the present disclosure will be described based on the drawings.

[0032] (First Embodiment)

[0033] First, a first embodiment of the present disclosure will be described.

[0034] Figure 1It is a side view showing the ophthalmic device of the first embodiment. The ophthalmic device 10 of the present embodiment irradiates light onto the eye E to be measured, and obtains information related to the characteristics of the eye to be measured based on the detection result of the light reflected by the eye E to be measured. That is, the ophthalmic device 10 of the present embodiment is an ophthalmic device that examines the eye E to be measured based on the light reflected by the eye E to be measured. In the examination using an ophthalmic device, it generally includes measurement for obtaining the characteristics of the eye E to be measured and photographing for obtaining an image of the eye E to be measured.

[0035] As examples of ophthalmic measurement devices, an eye refractometry device (refractometer, corneal astigmatometer) for measuring the refractive characteristics of the eye to be measured, a tonometer, a specular microscope for obtaining corneal characteristics (corneal thickness, cell distribution, etc.), a wavefront analyzer for obtaining aberration information of the eye to be measured using a Hartmann-Shack sensor, an axial length measurement device, etc. can be cited. Specifically, a refractometer measures the eye refraction by irradiating an annular image onto the back of the eye and analyzing the reflected image from the back of the eye captured by a camera. In addition, a corneal astigmatometer measures the eye refraction by irradiating an annular image onto the front of the eye and analyzing the reflected image captured by a front-eye camera.

[0036] As examples of ophthalmic photographing devices, an optical coherence tomography scanner for obtaining tomographic images using optical coherence tomography (OCT), a fundus camera for photographing the fundus image of the fundus, a scanning laser ophthalmoscope (SLO) for obtaining a fundus image by laser scanning using a confocal optical system, a slit lamp for obtaining an image by cutting an optical section of the cornea with slit light, etc. can be cited.

[0037] Figure 1 It is a schematic diagram showing the ophthalmic device 10 of the first embodiment. In addition, Figure 2 It is a perspective view showing the drive mechanism 30 part of the ophthalmic device 10 of the first embodiment. Figure 3 It is a block diagram showing the connection state of the components of the ophthalmic device 10 of the first embodiment. Next, with reference to Figure 1 、 Figure 2 And Figure 3 The structure of the ophthalmic device 10 of the first embodiment will be described.

[0038] The ophthalmic device 10 of the first embodiment includes a head unit 20, a drive mechanism 30, a display unit 74, a base unit 80, a chin rest unit 81, and a forehead rest unit 82. The head unit 20 is provided on the base unit 80 by the drive mechanism 30.

[0039] The head portion 20 has an intraocular pressure measurement unit (not shown) and an eye characteristic measurement unit (not shown). That is, the ophthalmic device 10 of the present embodiment is a composite ophthalmic device having an intraocular pressure measurement unit and an eye characteristic measurement unit. The intraocular pressure measurement unit measures the intraocular pressure of the eye to be measured. The eye characteristic measurement unit measures other optical characteristics (eye characteristics) of the eye to be measured. Among them, at least one of the measurement unit and the imaging unit provided inside the head portion 20 is not limited to the intraocular pressure measurement unit and the eye characteristic measurement unit. For example, the ophthalmic device 10 may be a composite ophthalmic device having an optical coherence tomograph that uses OCT to obtain tomographic images and a fundus camera that photographs the fundus. That is, the ophthalmic device 10 of the present embodiment may be only any one of the above-exemplified ophthalmic imaging devices and ophthalmic measurement devices, or may be a device composed of any combination. Thus, the head portion 20 has an inspection unit, and the inspection unit includes at least one of an imaging unit having an imaging function inside and a measurement unit having a measurement function. In the present embodiment, for the head portion 20, the case where it has an intraocular pressure measurement unit and an eye characteristic measurement unit as the inspection unit is taken as an example for description.

[0040] The intraocular pressure measurement unit and the eye characteristic measurement unit provided in the head portion 20 each have an inspection optical system for optically inspecting the eye E to be measured. For example, the intraocular pressure measurement unit and the eye characteristic measurement unit each have an illumination optical system or an imaging optical system, etc. as the inspection optical system. The above illumination optical system includes a light source 21 that irradiates illumination light to the anterior part or the fundus of the eye E to be measured, and the above imaging optical system includes an imaging camera 22 (anterior part camera, fundus camera, etc.) for acquiring an anterior part image or a fundus image of the eye E to be measured. The light output from the light source 21 of the inspection optical system is irradiated onto the eye E to be measured as light rays parallel to the optical axis O1 of the inspection optical system. In addition, the head portion 20 has a stereo camera 23 for adjusting the coordination position so that the eye E to be measured and the head portion 20 maintain an appropriate distance. The stereo camera 23 has at least two cameras for the coordination position, and the coordination position detection unit 72 described later can detect the relative position between the eye E to be measured and the head portion 20 through the image information captured by the two cameras for the coordination position.

[0041] The display unit 74 is formed by a liquid crystal display, and under the control of the control unit 71, it displays images such as the anterior segment image of the eye E to be measured or inspection results, etc. In the present embodiment, for the display unit 74, the function of a touch panel is mounted as the operation unit 75, and operations such as measurement using the intraocular pressure measurement unit or the eye characteristic measurement unit or operations for moving the head unit 20 can be performed. For the display unit 74, the user can specify the image of the eye E to be measured through the touch panel, so that the head unit 20 can be moved centered on the specified part, or the head unit 20 can be automatically moved through coordinated position adjustment, thereby performing focusing, etc. In addition, the head unit 20 can also be manually moved through the operation of the operation unit 75. In addition, for the operation of performing measurement, a measurement switch can be provided, and measurement can be performed by operating the measurement switch. In addition, for the operation of moving the head unit 20, a control lever or a movement operation switch can be provided, and the head unit 20 can be moved by operating the control lever or the movement operation switch.

[0042] The jaw rest portion 81 and the forehead rest portion 82 fix the position of the eye E to be measured relative to the ophthalmic device 10 by fixing the face of the subject relative to the head unit 20 during measurement. The jaw rest portion 81 is the part where the subject places the chin, and the forehead rest portion 82 is the part where the subject presses the forehead. The head unit 20 can be moved relative to the base portion 80 by the drive mechanism 30. Thus, the head unit 20 can move relative to the face of the subject fixed by the jaw rest portion 81 and the forehead rest portion 82, that is, can move relative to the eye E to be measured.

[0043] In the specification of the present application, the direction of gravity is defined as the vertical direction, that is, the Y direction, and the directions perpendicular to the direction of gravity are defined as the X direction and the Z direction, respectively. In addition, the direction indicating the plane defined by the X direction and the Z direction is defined as the horizontal direction. In addition, in Figure 1 it, the left - right direction is set as the Z direction (the direction of the optical axis O1 of the inspection optical system).

[0044] The drive mechanism 30 can move the head unit 20 relative to the base portion 80 in the vertical direction and the horizontal direction. In addition, the head unit 20 can be tilted in any direction relative to the vertical direction or the horizontal direction.

[0045] The drive mechanism 30 includes: two arms, namely arm portions 31a and 31b; five rotational support mechanisms, namely rotational support mechanism portions 32a, 32b, 32c, 32d, and 32e; five drive portions 33a, 33b, 33c, 33d, and 33e for driving the respective rotational support mechanisms; and support portions 35a, 35b, 35c, and 35d. The rotational support mechanism portions 32a, 32b, 32c, 32d, and 32e are formed on the arm portions or the support portions and are each capable of rotating the other connected arm portion or support portion about axes 34a, 34b, 34c, 34d, and 34e. Specifically, it is a mechanism for holding the shaft body for connecting two members (arm portions and support portions) in a rotatable manner. The drive portions 33a, 33b, 33c, 33d, and 33e generate driving forces for rotating the rotational support mechanism portions 32a, 32b, 32c, 32d, and 32e, and are, for example, motors. Specifically, for example, it is a mechanism that combines a DC motor and an encoder so as to be controllable at a specified rotation angle. In addition, each of the drive portions may be a stepping motor. Further, the motor may be integrated with a reduction mechanism. In the specification of the present application, a structure in which the drive portion and the rotational support mechanism are integrated is illustrated. For example, the rotational support mechanism portion 32a and the drive portion 33a for driving the rotational support mechanism portion 32a are designated as 32a(33a). In addition, the rotational support mechanism portion and the drive portion may be separately formed. For example, it may also be configured such that the rotational support mechanism portion is a mechanism for holding the shaft body using bearings or the like, and the drive portion transmits the rotational driving force to the gear-equipped shaft body held by bearings or the like through a reduction gear or the like.

[0046] Next, the structure of the drive mechanism 30 will be described in more detail. The arm portion 31a is connected to the base portion 80 through the support portion 35b and the support portion 35a fixed to the base portion 80 in sequence. More specifically, the support portion 35b is connected to the support portion 35a fixed to the base portion 80 in such a manner that it can rotate about the axis 34a through the rotational support mechanism portion 32a (equivalent to the first rotational support mechanism) provided in the support portion 35a. In addition, the arm portion 31a is connected to the support portion 35b in such a manner that it can rotate about the axis 34b through the rotational support mechanism portion 32b (equivalent to the second rotational support mechanism) provided in the support portion 35b. Next, the arm portion 31b is connected to the arm portion 31a in such a manner that it can rotate through the rotational support mechanism portion 32c (equivalent to the second rotational support mechanism) provided in the arm portion 31a. The arm portion 31b and the machine head portion 20 are connected through the support portion 35c and the support portion 35d. More specifically, the support portion 35c is connected to the arm portion 31b in such a manner that it can rotate about the axis 34d through the rotational support mechanism portion 32d (equivalent to the second rotational support mechanism) provided in the arm portion 31b. The support portion 35d is connected to the support portion 35c in such a manner that it can rotate about the axis 34e through the rotational support mechanism portion 32e (equivalent to the first rotational support mechanism) provided in the support portion 35c. In addition, each rotational support mechanism portion may also be provided on the side of the connected member.

[0047] In Figure 1 , Figure 2 the axes 34a and 34e are axes that can point in the Y direction, i.e., the vertical direction, and the two axes 34a and 34e are an example of the first axis in the present disclosure. The axes 34b, 34c, and 34d are axes that can point in the X direction, i.e., the horizontal direction, and the three axes 34b, 34c, and 34d are an example of the second axis in the present disclosure. In addition, during the operation of the drive mechanism 30, each axis does not necessarily exhibit the above relationship.

[0048] Figure 3It is a block diagram showing the electrical connection state of the ophthalmic device 10 of the first embodiment. The control unit 71 is a control device built into the base unit 80. The control unit 71 can control the light source 21 to irradiate light into the eye E to be measured. In addition, the control unit 71 can receive information from the imaging camera 22, analyze the received captured image data, and display the captured image data and the analysis result on the display unit 74. The coordination position detection unit 72 can calculate information about the relative position between the head unit and the eye to be measured through information from the stereo camera 23. The control unit 71 can control the necessary driving units among the driving units 33a, 33b, 33c, 33d, and 33e according to the information about the relative position calculated by the coordination position detection unit 72, so as to move the position of the head unit 20 to keep the head unit 20 in an appropriate positional relationship with the eye E to be measured.

[0049] The line-of-sight position detection unit 73 has the following functions: receiving the captured image data input by the imaging camera 22 through the control unit 71, detecting the line-of-sight position of the eye E to be measured, calculating the line-of-sight direction based on the detected line-of-sight position, and sending it to the control unit 71. The line-of-sight position detection unit 73 can, for example, detect the line-of-sight position of the eye E to be measured by using a line-of-sight direction detection method (corneal detection method) of Purkinje images. Near-infrared light is incident from the light source 21 into the eye E to be measured. On the surface of the cornea Ea of the eye E to be measured, a reflection image of the near-infrared light, that is, a Purkinje image, is generated by the incidence of the near-infrared light of the point light source. The position of this Purkinje image changes as the line-of-sight direction of the eye E to be measured changes. Therefore, the line-of-sight position detection unit 73 can detect the position coordinates C1 of the Purkinje image in the eye E to be measured based on the captured image data of the eye E to be measured input by the imaging camera 22. And the line-of-sight position detection unit 73 can detect the line-of-sight direction of the eye E to be measured based on the relative position (line-of-sight position) between the position of the Purkinje image indicated by the position coordinates C1 and the pupil center. In addition, other methods can also be used for the detection method of the line-of-sight direction.

[0050] The line-of-sight position detection unit 73 detects the relative position of the eye E to be measured with respect to the imaging camera 22 based on the captured image data. In addition, there is no particular limitation on the detection method of the relative position of the eye E to be measured. In this case, the line-of-sight position detection unit 73 functions as an eye position detection unit for detecting the relative position of the eye E to be measured with respect to the head unit 20.

[0051] Next, the operation of the ophthalmic device 10, especially the driving mechanism 30, is described. The control unit 71 can control the driving unit 33a to rotate the support unit 35b and the arm unit 31a connected thereto around the axis 34a, thereby changing the orientation (inclination) of the head unit 20 in the XZ plane. The control unit 71 can control the driving unit 33b to rotate the arm unit 31a around the axis 34b, thereby changing the position or inclination (orientation) of the head unit 20 in the X, Y, and Z directions. The control unit 71 can control the driving unit 33c to rotate the arm unit 31b around the axis 34c, thereby changing the position or inclination (orientation) of the head unit 20 in the X, Y, and Z directions. The control unit 71 can control the driving unit 33d to rotate the support unit 35c around the axis 34d, thereby changing the inclination (orientation) of the head unit 20. Furthermore, the control unit 71 can change the orientation (inclination) of the nose portion 20 by controlling the driving unit 33 e to rotate the support portion 35 d around the shaft 34 e .

[0052] In this way, the control unit 71 can move the head 20 to any position in the XYZ space, tilt the head 20 in any direction, or change its orientation by controlling the driving units 33a, 33b, 33c, 33d, and 33e. The sight line position (detection result) of the eye E to be measured is detected by the sight line position detection unit 73, and the control unit 71 can control the driving units 33a, 33b, 33c, 33d, and 33e to adjust the orientation of the head 20 by using the sight line direction based on the sight line position (detection result) so that the optical axis O1 of the inspection optical system is roughly consistent with the sight line direction. In addition, the driving units 33a, 33b, 33c, 33d, and 33e can also be controlled to adjust the orientation of the head 20 so that the optical axis O1 of the inspection optical system deviates from the sight line direction based on the sight line direction. For example, when photographing the fundus image of the eye E of a subject with cataract or acquiring a tomographic image by OCT, the orientation of the head 20 can be adjusted so that the optical axis O1 of the inspection optical system avoids the white turbid part in the lens of the eye E, thereby enabling inspection of the subject with cataract. In this way, the head 20 can be placed at any position or oriented in any direction relative to the eye E, thereby enabling inspection from any position or direction of the eye E.

[0053] In addition, by synchronously controlling the driving units, the inclination and orientation of the head 20 can be kept fixed and the position of the head 20 can be moved. Thus, the optical axis O1 of the inspection optical system can be moved to match the direction toward the eye E to be measured while maintaining the posture of the head 20.

[0054] In addition, by synchronously controlling each drive unit, the inclination and orientation of the machine head 20 can be changed while keeping the optical axis O1 of the inspection optical system passing through the center of rotation of the eye to be measured E, that is, the eye rotation point, or passing near it (approximate eye rotation point).

[0055] The coordination position detection unit 72 can calculate information on the relative position between the machine head 20 and the eye to be measured E based on the information from the stereo camera 23. For example, when it is determined that the relative position between the machine head 20 and the eye to be measured E is far from the appropriate position, that is, when it is determined that the distance in the X direction is far, the control unit 71 synchronously controls the drive units 33d, 33c, and 33b to drive, thereby maintaining the posture of the machine head 20 and keeping the position in the Y direction, and automatically moving the machine head 20 in Figure 1 the Z direction, that is, the right direction in. The control unit 71 can control the drive mechanism 30 to move the machine head 20 according to the distance information from the coordination position detection unit 72, or can use the information related to the relative position sequentially output from the coordination position detection unit 72 for feedback control to move the machine head 20.

[0056] In addition, the control unit 71 can also control each drive unit according to the operation from the operation unit 75, so as to move the machine head 20, etc.

[0057] As described above, according to the ophthalmic device 10 of the embodiment of the present disclosure, a small ophthalmic device 10 that does not use a sliding mechanism and has an increased positioning freedom degree of the machine head 20 can be provided. In addition, while increasing the positioning freedom degree of the machine head 20, the structure can be simplified. In addition, the control unit 71 controls the drive mechanism 30 according to the information from the coordination position detection unit 72, so that the machine head 20 can be automatically adjusted to an appropriate positional relationship with the eye to be measured E.

[0058] (Modification of the first embodiment)

[0059] A modification of the ophthalmic device 10 of the first embodiment will be described. Different from the first embodiment, one arm portion moves in a manner that can only rotate in the horizontal direction. Figure 4 It is a schematic structural diagram showing a modification of the drive mechanism of the ophthalmic device of the first embodiment, and is a diagram showing an enlarged view of a part of the drive mechanism 30' of the ophthalmic device 10.

[0060] The drive mechanism 30' has: two arms, namely arm portions 31a' and 31b'; five rotational support mechanisms, namely rotational support mechanism portions 32a', 32b', 32c', 32d', and 32e'; five drive portions 33a', 33b', 33c', 33d', and 33e' for driving the respective rotational support mechanisms; and support portions 35a', 35b', 35c', and 35d'. The rotational support mechanism portions 32a', 32b', 32c', 32d', and 32e' are formed on the arm portions or the support portions and can respectively rotate the other connected arm portion or support portion about axes 34a', 34b', 34c', 34d', and 34e'.

[0061] Next, the structure of the drive mechanism 30' will be described in more detail. The arm portion 31a' is connected to the base portion 80 in such a manner that it can rotate about the axis 34a' through the support portion 35a' fixed to the base portion 80 and the rotational support mechanism portion 32a' (equivalent to the second rotational support mechanism) provided in the support portion 35a'. Thus, the arm portion 31a' can move in a manner that it rotates in the horizontal direction. The arm portion 31b' is connected to the arm portion 31a' through the support portion 35b'. More specifically, the support portion 35b' is connected to the arm portion 31a' in such a manner that it can rotate about the axis 34b' through the rotational support mechanism portion 32b' (equivalent to the second rotational support mechanism) provided in the arm portion 31a'. The arm portion 31b' is connected to the support portion 35b' in such a manner that it can rotate about the axis 34c' through the rotational support mechanism portion 32c' (equivalent to the first rotational support mechanism) provided in the support portion 35b'. The arm portion 31b' and the machine head portion 20 are connected through the support portions 35c' and 35d'. More specifically, the support portion 35c' is connected to the arm portion 31b' in such a manner that it can rotate about the axis 34d' through the rotational support mechanism portion 32d' (equivalent to the first rotational support mechanism) provided in the arm portion 31b'. The support portion 35d' is connected to the support portion 35c' in such a manner that it can rotate about the axis 34e' through the rotational support mechanism portion 32e' (equivalent to the second rotational support mechanism) provided in the support portion 35c'. In addition, each rotational support mechanism portion may also be provided on the side of the connected member.

[0062] In Figure 4 , the axes 34c' and 34d' are axes that can point in the X direction, i.e., the horizontal direction, and these two axes 34c' and 34d' are an example of the first axis in the present disclosure. Additionally, the axes 34a', 34b', and 34e' are axes that can point in the Y direction, i.e., the vertical direction, and these three axes 34a', 34b', and 34e' are an example of the second axis in the present disclosure. Furthermore, during the operation of the drive mechanism 30', the respective axes do not necessarily exhibit the above relationships.

[0063] Next, the operation of the drive mechanism 30' will be described. The control unit 71 can control the drive unit 33a' to rotate the arm unit 31a' about the axis 34a', thereby changing the position or orientation (tilt) of the head unit 20 in the X, Y, and Z directions. The control unit 71 can control the drive unit 33b' to rotate the support unit 35b' about the axis 34b', thereby changing the position or orientation (tilt) of the head unit 20 in the X, Y, and Z directions. The control unit 71 can control the drive unit 33c' to rotate the arm unit 31b' about the axis 34c', thereby changing the position or tilt (orientation) of the head unit 20 in the X, Y, and Z directions. The control unit 71 can control the drive unit 33d' to rotate the support unit 35c' about the axis 34d', thereby changing the tilt (orientation) of the head unit 20. The control unit 71 can control the drive unit 33e' to rotate the support unit 35d' about the axis 34e', thereby changing the orientation (tilt) of the head unit 20. Thus, the control unit 71 can move the head unit 20 to any position in the XYZ space, or tilt the head unit 20 in any direction, or change its orientation by controlling the drive units 33a', 33b', 33c', 33d', and 33e'.

[0064] As described above, even when using a drive mechanism with such a structure, that is, one arm unit moves in a manner that can only rotate in the horizontal direction, two of the five axes point in the horizontal direction, and three axes point in the vertical direction, the head unit 20 can be moved to any position in the XYZ space, or tilted in any direction, or its orientation can be changed in the same manner as in the first embodiment.

[0065] (Another modification of the first embodiment)

[0066] Another modification of the ophthalmic device 10 of the first embodiment will be described. Different from the first embodiment, a rotational support mechanism unit is further provided between the two arm units. Figure 5 It is a schematic perspective view showing another modification of the drive mechanism of the ophthalmic device of the first embodiment.

[0067] The drive mechanism 30” has: two arms, namely arm portions 31a” and 31b”; six rotational support mechanisms, namely rotational support mechanism portions 32a”, 32b”, 32c”, 32d”, 32e”, and 32f”; six drive portions 33a”, 33b”, 33c”, 33d”, 33e”, and 33f” for driving the respective rotational support mechanisms; and support portions 35a”, 35b”, 35c”, 35d”, and 35e”. The rotational support mechanism portions 32a”, 32b”, 32c”, 32d”, 32e”, and 32f” are formed on the arm portions or the support portions and can cause the other connected arm portions or support portions to rotate about axes 34a”, 34b”, 34c”, 34d”, 34e”, and 34f” respectively.

[0068] Next, the structure of the drive mechanism 30” will be described in more detail. The arm portion 31a” is connected to the base portion 80 through the support portion 35b” and the support portion 35a” fixed to the base portion 80 in sequence. More specifically, the support portion 35b” is connected to the support portion 35a” fixed to the base portion 80 in such a manner that it rotates about the axis 34a” through the rotational support mechanism portion 32a” (equivalent to the first rotational support mechanism) provided in the support portion 35a”. In addition, the arm portion 31a” is connected to the support portion 35b” in such a manner that it rotates about the axis 34b” through the rotational support mechanism portion 32b” (equivalent to the second rotational support mechanism) provided in the support portion 35b”. Next, the arm portion 31b” is connected to the arm portion 31a” through the support portion 35c”. More specifically, the support portion 35c” is connected to the arm portion 31a” in such a manner that it rotates about the axis 34c” through the rotational support mechanism portion 32c” (equivalent to the first rotational support mechanism) provided in the arm portion 31a”. The arm portion 31b” is connected to the support portion 35c” in such a manner that it rotates about the axis 34d” through the rotational support mechanism portion 32d” (equivalent to the second rotational support mechanism) provided in the support portion 35c”. The arm portion 31b” is connected to the machine head portion 20 through the support portions 35d” and 35e”. More specifically, the support portion 35d” is connected to the arm portion 31b” in such a manner that it rotates about the axis 34e” through the rotational support mechanism portion 32e” (equivalent to the first rotational support mechanism) provided in the arm portion 31b”. The support portion 35e” is connected to the support portion 35d” in such a manner that it rotates about the axis 34f” through the rotational support mechanism portion 32f” (equivalent to the second rotational support mechanism) provided in the support portion 35d”. In addition, each rotational support mechanism portion may also be provided on the side of the connected member.

[0069] In Figure 5Among them, the shafts 34a", 34c", and 34e" are shafts that can point in the Y direction, i.e., the vertical direction. The three shafts 34a", 34c", and 34e" are an example of the first shaft in the present disclosure. In addition, the shafts 34b", 34d", and 34f" are shafts that can point in the X direction, i.e., the horizontal direction. The three shafts 34b", 34d", and 34f" are an example of the second shaft in the present disclosure. In addition, during the operation of the drive mechanism 30", each shaft does not necessarily exhibit the above relationship.

[0070] Next, the operation of the drive mechanism 30" will be described. The control unit 71 can cause the support portion 35b" and the arm portion 31a" connected thereto to rotate about the shaft 34a" through the drive portion 33a", thereby changing the orientation (tilt) of the machine head portion 20 in the XZ plane. The control unit 71 can cause the arm portion 31a" to rotate about the shaft 34b" by controlling the drive portion 33b", thereby changing the position or tilt (orientation) of the machine head portion 20 in the X, Y, and Z directions. The control unit 71 can cause the support portion 35c" to rotate about the shaft 34c" by controlling the drive portion 33c", thereby changing the position or tilt (orientation) of the machine head portion 20 in the X, Y, and Z directions. The control unit 71 can cause the arm portion 31b" to rotate about the shaft 34d" by controlling the drive portion 33d", thereby changing the position or tilt (orientation) of the machine head portion 20 in the X, Y, and Z directions. The control unit 71 can cause the support portion 35d" to rotate about the shaft 34e" by controlling the drive portion 33e", thereby changing the tilt (orientation) of the machine head portion 20. The control unit 71 can cause the support portion 35e" to rotate about the shaft 34f" by controlling the drive portion 33f", thereby changing the orientation (tilt) of the machine head portion 20.

[0071] As described above, by using a drive mechanism having a structure in which three shafts point in the horizontal direction and three shafts point in the vertical direction, the control unit 71 can move the machine head portion 20 to any position in the XYZ space, or tilt the machine head portion 20 in any direction, or change its orientation by controlling the drive portions 33a", 33b", 33c", 33d", 33e", and 33f". Since the drive mechanism 30" has six rotatable shafts, the movement of the machine head portion 20 can be made smoother compared to the case of having five rotatable shafts.

[0072] In addition, in the drive mechanism 30 of the present embodiment, the number of arms is not limited to two, and may be three or more. In addition, the number of rotational support mechanism portions may be five or more, and the number of drive portions may be five or more.

[0073] (Second Embodiment)

[0074] Next, a second embodiment of the present disclosure will be described. The ophthalmic device 10A of the second embodiment can simultaneously acquire information on the eyes to be measured of both eyes of the subject. In order to be able to examine both eyes of the subject simultaneously, it has machine heads for the two eyes respectively.

[0075] Figure 6 It is a perspective view showing the machine head and the drive mechanism part in the ophthalmic device 10A of the second embodiment. Figure 6 The machine heads 20L, 20R, the drive mechanisms 30L, 30R, and the frame part 85 of the ophthalmic device 10A are shown, and the illustration of other constituent elements is omitted. In addition, although the jaw support part or the forehead support part shown in the first embodiment is not shown, it may be provided on the ophthalmic device 10A in order to fix the face of the subject. Figure 7 It is a block diagram showing the connection state of the constituent elements of the ophthalmic device 10A of the second embodiment. Next, with reference to Figure 6 and Figure 7 the structure of the ophthalmic device 10A of the second embodiment will be described. In addition, the same reference numerals are given to the same structures as those in the first embodiment, and their descriptions are omitted. Further, the left eye to be measured is set as the eye to be measured EL, and the reference numeral EaL represents the corneal part of the eye to be measured EL. Similarly, the right eye to be measured is set as the eye to be measured ER, and the reference numeral EaR represents the corneal part of the eye to be measured ER.

[0076] In Figure 6 a support column (not shown) is supported on the base part of the ophthalmic device 10A, the left drive mechanism 30L and the right drive mechanism 30R are connected to the frame part 85 fixed to the support column, the left machine head 20L is connected to the left drive mechanism 30L, and the right machine head 20R is connected to the right drive mechanism 30R. That is, the machine head and the drive mechanism are composed of two sets on the left and right sides, and the two machine heads 20L, 20R can respectively receive the light reflected by the left and right eyes to be measured EL, ER of the subject.

[0077] The drive mechanism 30L has: two arms, namely arm parts 31aL, 31bL, six rotational support mechanisms, namely rotational support mechanism parts 32aL, 32bL, 32cL, 32dL, 32eL, 32fL, six drive parts 33aL, 33bL, 33cL, 33dL, 33eL, 33fL for driving each rotational support mechanism, and support parts 35aL, 35bL, 35cL, 35dL. The rotational support mechanism parts 32aL, 32bL, 32cL, 32dL, 32eL, 32fL are formed on the arm part or the support part, and can respectively rotate the other arm part or support part connected thereto around the axes 34aL, 34bL, 34cL, 34dL, 34eL, 34fL.

[0078] Next, the structure of the drive mechanism 30L will be described in more detail. The arm portion 31aL is connected to the frame portion 85 through the support portion 35aL. More specifically, the support portion 35aL is connected in such a manner that it rotates about the shaft 34aL through the rotational support mechanism portion 32aL (equivalent to the first rotational support mechanism) provided in the support portion 35aL. In addition, the arm portion 31aL is connected to the support portion 35aL in such a manner that it rotates about the shaft 34bL through the rotational support mechanism portion 32bL (equivalent to the second rotational support mechanism) provided in the arm portion 31aL. Next, the arm portion 31bL is connected to the arm portion 31aL through the support portion 35bL. More specifically, the support portion 35bL is connected to the arm portion 31aL in such a manner that it rotates about the shaft 34cL through the rotational support mechanism portion 32cL (equivalent to the second rotational support mechanism) provided in the support portion 35bL. The arm portion 31bL is connected to the support portion 35bL in such a manner that it rotates about the shaft 34dL through the rotational support mechanism portion 32dL (equivalent to the first rotational support mechanism) provided in the arm portion 31bL. The arm portion 31bL and the machine head portion 20L are connected through the support portion 35cL and the support portion 35dL. More specifically, the support portion 35cL is connected to the arm portion 31bL in such a manner that it rotates about the shaft 34eL through the rotational support mechanism portion 32eL (equivalent to the second rotational support mechanism) provided in the support portion 35cL. The support portion 35dL is connected to the support portion 35cL in such a manner that it rotates about the shaft 34fL through the rotational support mechanism portion 32fL (equivalent to the first rotational support mechanism) provided in the support portion 35dL. The machine head portion 20L is connected to the support portion 35dL. In addition, each rotational support mechanism portion may also be provided on the side of the connected member.

[0079] In Figure 6 the shafts 34aL, 34dL, and 34fL are shafts that can point in the Y direction, i.e., the vertical direction, and the three shafts 34aL, 34dL, and 34fL are an example of the first axis in the present disclosure. In addition, the shafts 34bL, 34cL, and 34eL are shafts that can point in the X direction, i.e., the horizontal direction, and the three shafts 34bL, 34cL, and 34eL are an example of the second axis in the present disclosure. In addition, during the operation of the drive mechanism 30L, each shaft does not necessarily exhibit the above relationship.

[0080] The drive mechanism 30R has a shape symmetric to that of the drive mechanism 30L. Each structure of the drive mechanism 30R is equivalent to the structure obtained by replacing the reference numeral "L" attached in the description of the drive mechanism 30L with "R", and has the same function as the drive mechanism 30L.

[0081] The head unit 20L on the left and the head unit 20R on the right are provided in pairs, corresponding to the left and right eyes to be measured of the subject respectively. The head unit 20L on the left obtains information of the left eye to be measured EL of the subject, and the head unit 20R on the right obtains information of the right eye to be measured ER of the subject.

[0082] On the head unit 20L on the left, a mirror 24L is provided as a deflecting member, and information of the corresponding eye to be measured EL of the inspection optical system can be obtained through the mirror 24L. On the head unit 20L on the left, an inspection optical system for obtaining eye information of the eye to be measured EL is provided. The inspection optical system includes a photographing optical system and the like. The photographing optical system includes: an illumination optical system having a light source 21L for irradiating illumination light to the front part or fundus of the eye to be measured EL, and a photographing camera 22L for obtaining a front part image or fundus image of the eye to be measured EL. In addition, the head unit 20L has a stereo camera 23L, and the stereo camera 23L is used to adjust the coordinated position of the eye to be measured EL and the head unit 20L so that the eye to be measured EL and the head unit 20L maintain an appropriate distance.

[0083] In addition, each structure of the head unit 20R on the right is equivalent to the structure obtained by replacing the reference numeral "L" attached in the description of the head unit 20L on the left with "R", and has the same function as the head unit 20L on the left.

[0084] Figure 7 The block diagram of... is the diagram corresponding to the block diagram shown in the first embodiment and the left and right head units 20L, 20R and the left and right drive mechanisms 30L, 30R. Figure 3 shown in the block diagram corresponding to the left and right head units 20L, 20R and the left and right drive mechanisms 30L, 30R.

[0085] Next, the operation of the drive mechanism 30L will be described. The control unit 71 can control the drive unit 33aL to rotate the support unit 35aL and the arm unit 31aL connected thereto about the axis 34aL, thereby changing the orientation (tilt) of the head unit 20L in the XZ plane. The control unit 71 can control the drive unit 33bL to rotate the arm unit 31aL about the axis 34bL, thereby changing the position or tilt (orientation) of the head unit 20L in the X, Y, and Z directions. The control unit 71 can control the drive unit 33cL to rotate the support unit 35bL about the axis 34cL, thereby changing the position or tilt (orientation) of the head unit 20L in the X, Y, and Z directions. The control unit 71 can control the drive unit 33dL to rotate the arm unit 31bL about the axis 34dL, thereby changing the position or tilt (orientation) of the head unit 20L in the X, Y, and Z directions. The control unit 71 can control the drive unit 33eL to rotate the support unit 35cL about the axis 34eL, thereby changing the tilt (orientation) of the head unit 20L. The control unit 71 can control the drive unit 33fL to rotate the support unit 35dL about the axis 34fL, thereby changing the orientation (tilt) of the head unit 20L. For the operation of the drive mechanism 30R, similarly, it is the operation achieved by replacing the reference numeral "L" attached to the description of the operation of the drive mechanism 30L with "R".

[0086] In this way, the control unit 71 can move the head units 20L and 20R to any position in the XYZ space, or tilt the head units 20L and 20R in any direction, or change their orientations by controlling the drive mechanisms 30L and 30R, that is, the drive units 33aL, 33bL, 33cL, 33dL, 33eL, 33fL, 33aR, 33bR, 33cR, 33dR, 33eR, and 33fR. Therefore, the head units 20L and 20R can be positioned at any position or oriented in any direction with respect to the eyes under test EL and ER, so that inspections can be performed from any position and any direction of the eyes under test EL and ER. In addition, the control unit 71 can use the detection results of the coordinated position detection unit 72 to control the drive mechanisms 30L and 30R respectively to align the head units 20L and 20R with the eyes under test EL and ER.

[0087] The line-of-sight position detection unit 73 has the following function: receiving the captured image data of the left and right eyes under test EL and ER input by 22L and 22R through the control unit 71, detecting the line-of-sight positions of the eyes under test EL and ER, calculating the line-of-sight directions based on the detected line-of-sight positions, and sending them to the control unit 71.

[0088] Next, refer to Figure 8A 、 Figure 8BA description will be given of the case where the head portions 20L and 20R are rotated in the XZ plane direction about the center of rotation of each eyeball of the eyes to be measured EL and ER, that is, the eye rotation point. Figure 8A , Figure 8B is a schematic plan view when the ophthalmic device 10A is viewed from above.

[0089] Figure 8A is a state in which the eyes to be measured EL and ER are directed toward the principal viewing plane (-Z direction). Figure 8B Shows a state in which the eyes to be measured EL and ER are directed toward the near vision direction. In order to make the eyes to be measured EL and ER into the near vision, it can be performed by guiding the line of sight of the eyes to be measured EL and ER using a fixation target (not shown). Each eye to be measured changes the direction of the line of sight about the eye rotation point.

[0090] In the ophthalmic device 10A, for example, when performing a quantitative examination of strabismus in near vision, the control unit 71 controls the drive mechanisms 30L and 30R to rotate the head portions 20L and 20R about the eye rotation point of the eye to be measured EL and the eye to be measured ER or a substantially eye rotation point position in the vicinity thereof, and instructs fixation on the fixation target, which is displayed at the fixation point PO at a position in front of the eye to be measured E at the examination distance. Thereby, the eyes to be measured EL and the eye to be measured ER can be converged and fixated on the fixation target. Here, when either or both of the eyes to be measured EL and ER cannot fixate as a strabismic eye, the control unit 71 can control the drive mechanisms 30L and 30R respectively to rotate the head portion so as to match the convergence angle θ to each eye to be measured.

[0091] Next, with reference to Figure 9A , Figure 9B , a description will be given of the case where the head portion 20L is rotated in the YZ plane direction about the eye rotation point of the eye to be measured EL. Although the following description is for the left head portion 20L and the eye to be measured EL, the same relationship holds for the right head portion 20R and the eye to be measured ER. Figure 9A , Figure 9B is a schematic side view showing the structure of the left side of the ophthalmic device 10A. Figure 9A is a state in which the eye to be measured EL is directed toward the principal viewing plane (-Z direction). Figure 9B is a state in which the eye to be measured EL is directed downward. In order to direct the eye to be measured EL downward, it can be performed by guiding the line of sight of the eye to be measured EL using a fixation target (not shown). The eye to be measured changes the direction of the line of sight about the eye rotation point.

[0092] In the ophthalmic device 10A, for example, when the line-of-sight direction of the eye to be measured is directed upward and downward, a fixation target is displayed in the vertical direction of the eye to be measured EL to guide the line of sight. The control unit 71 can rotate the head unit 20L about the eye rotation point of the eye to be measured EL or a substantially eye rotation point position near it by controlling the drive mechanism 30L.

[0093] Since the left and right head units 20L and 20R are respectively connected to independent drive mechanisms 30L and 30R, the left and right eyes to be measured EL and ER can be respectively examined in independent directions.

[0094] As described above, since the left and right head units 20L and 20R can be freely rotated in the XZ plane direction and the YX plane direction, for the eye to be measured during an examination or the like, it is possible to match any line-of-sight direction in terms of distance, up and down, and left and right. In addition, the optical axes of the inspection optical systems can be independently set for the left and right eyes to be measured EL and ER. Therefore, for example, when the subject has strabismus, even if the line-of-sight direction (optical axis) of one eye to be measured (for example, the eye to be measured EL) is aligned with the fixation target, the line-of-sight direction of the other eye to be measured (for example, the eye to be measured ER) will deviate from the fixation target. At this time, the control unit 71 can control the orientation of the head unit 20 (for example, the head unit 20R) according to the line-of-sight direction of the other eye to be measured (for example, the eye to be measured ER). In addition, in the detection of the line-of-sight direction, the detection results of the line-of-sight positions of the eyes to be measured EL and ER provided by the line-of-sight position detection unit 73 can be used. In this way, it is possible to separately handle the inspection and imaging (strabismus inspection in subjective inspection and peripheral imaging in fundus imaging) performed in a state where the optical axis of the inspection optical system is consistent with the line-of-sight direction (optical axis) of the eye to be measured and a state where it is inconsistent with the line-of-sight direction (optical axis). In addition, as a usage example in a state where it is inconsistent with the line-of-sight direction (optical axis), it is possible to separately avoid the white cloudy parts in the lenses of the left and right eyes E of a cataract patient and perform an inspection or the like on the target position.

[0095] In the above description, although the number of arms in the drive mechanisms 30L and 30R is 2, it is not limited to 2 and can be 3 or more. In addition, the number of rotational support mechanism parts does not necessarily have to be 6, as long as it is 5 or more, and the number of drive parts also only needs to be 5 or more.

[0096] (Third Embodiment)

[0097] Next, a third embodiment of the present disclosure will be described. The ophthalmic system 1 of the third embodiment is a system that connects the ophthalmic devices 10 and 10A of the first embodiment and the second embodiment to a network and can, for example, remotely perform ophthalmic examinations and the like.

[0098] Figure 10It is a block diagram showing the ophthalmic system 1 of the third embodiment. The ophthalmic system 1 of this embodiment is configured by connecting to a terminal device 90 and an ophthalmic device 10(10A) used on the user side via a network NW such as the Internet or a VPN (Virtual Private Network). The terminal device 90 can be a portable terminal such as a PC (personal computer), a smartphone, a tablet PC, and a mobile phone, for example.

[0099] According to the ophthalmic system 1 of this embodiment, it is possible to send examination information of the ophthalmic device 10(10A) to the terminal device 90 via the network NW. In addition, the control unit 71 can be made to control the drive mechanism 30 etc. from the terminal device 90 via the network NW. As a result, for example, when the physical distance between the subject and the doctor is far (for example, in a distant place), it is possible to support the doctor in diagnosing the subject's eye. In addition, a doctor in a distant place can control the drive mechanism 30 etc. by operating the terminal device 90, thereby adjusting the positional relationship between the subject's eye and the machine head.

[0100] As described above, several embodiments of the present disclosure have been described. However, these embodiments can also be implemented in various other ways, and various omissions, substitutions, and changes can be made as long as the gist of the invention is not departed from. These embodiments or their modifications are included in the scope and gist of the invention, and similarly, are included in the invention described in the claims and its equivalents.

[0101] In addition, in the above embodiment, the coordination position is measured using a stereo camera, but it is not limited to this. For example, the following method can also be adopted, that is, the machine head has a coordination position light source and a line sensor, the line sensor receives the light irradiated by the coordination position light source and reflected by the detected eye, and the relative position between the detected eye and the machine head is detected from the information from the line sensor, thereby adjusting the coordination position.

Claims

1. An ophthalmic device for obtaining optical information of an eye to be measured, wherein the ophthalmic device is characterized by comprising: A head portion having an optical system capable of receiving light reflected by the eye to be measured, A driving mechanism that holds the head portion in a movable manner, and A control unit that controls the driving mechanism; The driving mechanism comprises: At least two arms including a first arm portion and a second arm portion connected in a rotatable manner, At least two first rotation support mechanisms including a first mechanism portion and a second mechanism portion, wherein the first mechanism portion and the second mechanism portion can rotate about a first axis so that the head portion can move, At least three second rotation support mechanisms including a third mechanism portion, a fourth mechanism portion, and a fifth mechanism portion that can rotate about a second axis different from the direction of the first axis, A driving unit for driving the first rotation support mechanism and the second rotation support mechanism, and A first support portion, a second support portion, a third support portion, and a fourth support portion; The first mechanism portion is provided on the first support portion, the third mechanism portion is connected to the first support portion, the first arm portion is connected to the third mechanism portion, the fourth mechanism portion is connected to the first arm portion, the third support portion is connected to the fourth mechanism portion, the second arm portion is connected to the third support portion, the fifth mechanism portion is connected to the second arm portion, the fourth support portion is connected to the fifth mechanism portion, the second mechanism portion is connected to the fourth support portion, the second support portion is connected to the second mechanism portion, and the head portion is supported by the second support portion. The control unit causes the first mechanism portion and the second mechanism portion to rotate synchronously about the first axis, and causes the third mechanism portion, the fourth mechanism portion, and the fifth mechanism portion to rotate synchronously about the second axis. Thus, while maintaining the optical axis of the reflected light from the deflection member provided on the head portion passing through the eye to be measured, the alignment between the head portion and the eye to be measured is performed.

2. The ophthalmic device according to claim 1, wherein It further has a coordination position detection unit for detecting the relative position between the eye to be measured and the head portion, The control unit can use the detection result of the coordination position detection unit to control the driving unit so that the head portion is aligned with the eye to be measured.

3. The ophthalmic device according to claim 1, wherein The head portion and the driving mechanism are at least composed of two groups, The two head portions can respectively receive light reflected by the eyes to be measured on the left and right sides of the subject.

4. The ophthalmic device according to claim 1, wherein It further has a line-of-sight position detection unit for detecting the line-of-sight position of the eye to be measured, The control unit can use the detection result of the line-of-sight position of the line-of-sight position detection unit to control the driving unit so that the head portion is aligned with the eye to be measured.

5. An ophthalmic system, characterized in that, Comprises: The ophthalmic device according to claim 1, and A terminal device that receives information related to the light received by the optical system through a network.

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