JP2021126428A - Ophthalmologic apparatus and ophthalmologic system - Google Patents

Abstract

To provide a new technology to cause an eye to be examined to be appropriately recognized in a stereoscopic manner according to an observer by a simple configuration.SOLUTION: An ophthalmologic apparatus includes an objective lens, a first illumination optical system, a left eye observation optical system, a right eye observation optical system, and an optical axis width adjustment member. The first illumination optical system is configured so as to irradiate an eye to be examined with first illumination light through the objective lens. The left eye observation optical system is configured so as to guide return light of the first illumination light made incident from the eye to be examined through the objective lens to a left eye ocular lens or a left eye image pickup device. The right eye observation optical system is configured so as to guide return light of the first illumination light made incident from the eye to be examined through the objective lens to a right eye ocular lens or a right eye image pickup device. The optical axis width adjustment member is configured so as to adjust the width of a first optical axis of the return light of the first illumination light made incident on the left eye observation optical system and a second optical axis of the return light of the first illumination light made incident on the right eye observation optical system.SELECTED DRAWING: Figure 2

Description

The present invention relates to an ophthalmic apparatus and an ophthalmic system.

The ophthalmic apparatus includes an ophthalmologic imaging apparatus for obtaining an image of the eye to be inspected, an ophthalmologic measuring apparatus for measuring the characteristics of the eye to be inspected, and the like.

Examples of ophthalmologic imaging devices include optical coherence tomography (OCT) using optical coherence tomography, fundus cameras, scanning laser ophthalmoscope (SLO), slit lamps, and the like. Examples of ophthalmic measuring devices include ophthalmic refraction test devices (refractometers, keratometers), tonometers, specular microscopes, wavefront analyzers, and the like. The ophthalmic apparatus also includes a surgical microscope, a laser photocoagulator, and the like.

Some such ophthalmic devices are provided with an observation optical system for the left eye and an observation optical system for the right eye, and the eye to be inspected can be observed with binocular eyes. For example, a surgical microscope is a device for illuminating an eye to be operated with illumination light and observing an image formed by the return light of the illumination light by an observation optical system. By using a variable magnification lens system in the observation optical system, it is possible to observe a magnified image of the eye to be operated on. Such surgical microscopes are used for ophthalmic surgery such as cataract surgery and retinal / vitreous surgery.

Techniques relating to a surgical microscope capable of observing a surgical eye with binoculars are disclosed in, for example, Patent Documents 1 to 4. This type of surgical microscope is provided with left and right observation optical systems, and is configured so that an operator or the like observes the eye to be operated by looking into the left and right eyepieces. As a result, the surgeon and the like can recognize the operated eye three-dimensionally.

Japanese Unexamined Patent Publication No. 2013-27536 Japanese Unexamined Patent Publication No. 2004-139002 JP-A-2018-198928 Japanese Unexamined Patent Publication No. 2019-41833

However, when observing the operated eye with binocular eyes, the degree of perceived stereoscopic effect differs depending on the observer. Therefore, it is desirable to provide a mechanism for changing the degree of stereoscopic effect recognized by the observer in the surgical microscope. In this case, it is desirable that the degree of stereoscopic effect can be changed without increasing the size of the configuration.

Further, it is desirable to provide a mechanism for changing the degree of stereoscopic effect recognized by the observer not only for the surgical microscope but also for the ophthalmic apparatus in general without causing an increase in the size of the configuration.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a new technique for appropriately recognizing an eye to be examined three-dimensionally according to an observer with a simple configuration. It is in.

The first aspect of some embodiments is an objective lens, a first illumination optical system capable of irradiating the eye to be inspected with the first illumination light through the objective lens, and incident light from the eye to be inspected through the objective lens. An observation optical system for the left eye capable of guiding the return light of the first illumination light to the eyepiece for the left eye or an imaging element for the left eye, and the first one incident from the eye to be inspected through the objective lens. The return light of the right eye observation optical system capable of guiding the return light of the illumination light to the right eye eyepiece or the right eye image pickup element, and the return light of the first illumination light incident on the left eye observation optical system. It is an ophthalmic apparatus including an optical axis width adjusting member capable of adjusting the width between the first optical axis and the second optical axis of the return light of the first illumination light incident on the observation optical system for the right eye.

In the second aspect of some embodiments, in the first aspect, the optical axis width adjusting member displaces the first optical axis in the first direction by a first displacement amount, and the second optical axis is displaced by the first displacement amount. The displacement is performed by the first displacement amount in the second direction opposite to the one direction.

In the third aspect of some embodiments, in the first or second aspect, the optical axis width adjusting member is arranged on the first optical axis, and the position of the first optical axis can be changed. It includes one optical element and a second optical element arranged on the second optical axis and capable of changing the position of the second optical axis.

In the fourth aspect of some embodiments, in the third aspect, each of the first optical element and the second optical element is a parallel flat plate whose incident angle of the return light can be changed.

A fifth aspect of some embodiments changes the width of the first optical axis and the second optical axis adjusted by the optical axis width adjusting member in any of the first to fourth aspects. Includes optical axis width changing member.

A sixth aspect of some embodiments is an objective lens, a first illumination optical system capable of irradiating the eye to be inspected with the first illumination light through the objective lens, and incident light from the eye to be inspected via the objective lens. An observation optical system for the left eye capable of guiding the return light of the first illumination light to the eyepiece for the left eye or an imaging element for the left eye, and the first incident from the eye to be inspected through the objective lens. The observation optical system for the right eye that can guide the return light of the illumination light to the eyepiece for the right eye or the image pickup element for the right eye, and the light of the return light of the first illumination light incident on the image pickup element for the left eye. It is an ophthalmic apparatus including an optical axis width changing member for changing the width between the shaft and the optical axis of the return light of the first illumination light incident on the right eye imaging element.

In the seventh aspect of some embodiments, in the fifth or sixth aspect, the optical axis width changing member is the first optical axis of the return light of the first illumination light incident on the left eye imaging element. The incident surface is substantially orthogonal to the second optical axis of the return light of the first illumination light incident on the right eye imaging element and the first diamond prism arranged so that the incident surface is substantially orthogonal to the light. Includes a second diamond prism, which is arranged so as to.

In the eighth aspect of some embodiments, in the fifth or sixth aspect, the optical axis width changing member is the first optical axis of the return light of the first illumination light incident on the left eye imaging element. The incident surface is diagonally arranged with respect to the first parallel plane plate whose incident surface is obliquely arranged with respect to the second optical axis of the return light of the first illumination light incident on the right eye imaging element. Also includes a second parallel flat plate.

A ninth aspect of some embodiments is arranged so as to be eccentric with respect to the optical axis of the objective lens in any of the first to eighth aspects, and the eye is exposed to the eye through the objective lens. The observation optical system for the left eye includes a second illumination optical system capable of irradiating a second illumination light having a color temperature different from that of the first illumination light, and the observation optical system for the left eye uses the return light of the second illumination light as the eyepiece for the left eye or the eyepiece for the left eye. It is configured so that it can be guided to the left eye imaging element, and the right eye observation optical system can guide the return light of the second illumination light to the right eye eyepiece or the right eye imaging element. It is configured to be possible.

A tenth aspect of some embodiments deflects the return light of the illumination light incident through the objective lens in any of the first to ninth aspects in a direction intersecting the optical axis of the objective lens. The left-eye observation optical system and the deflection member leading to the right-eye observation optical system are included.

The eleventh aspect of some embodiments is obtained by the light receiving result of the return light obtained by the left eye image sensor and the right eye image sensor in any one of the first to tenth aspects. It includes a display control unit that causes a display means to display an image of the eye to be inspected based on the result of receiving the return light.

In the twelfth aspect of some embodiments, in the eleventh aspect, the display control unit comprises the left eye image generated based on the light receiving result of the return light obtained by the left eye image sensor. The display means displays the image for the right eye generated based on the light receiving result of the return light obtained by the image sensor for the right eye.

A thirteenth aspect of some embodiments is an ophthalmic system comprising the ophthalmic apparatus of the eleventh or twelfth aspect and the display means.

In addition, it is possible to arbitrarily combine the configurations according to the above-mentioned plurality of aspects.

According to some embodiments of the present invention, it becomes possible to provide a new technique for appropriately recognizing an eye to be examined three-dimensionally according to an observer with a simple configuration.

It is the schematic which shows an example of the structure of the ophthalmic system which concerns on 1st Embodiment. It is the schematic which shows an example of the structure of the optical system of the surgical microscope which concerns on 1st Embodiment. It is the schematic for demonstrating the operation of the surgical microscope which concerns on 1st Embodiment. It is the schematic for demonstrating the operation of the surgical microscope which concerns on 1st Embodiment. It is the schematic which shows an example of the structure of the control system of the surgical microscope which concerns on 1st Embodiment. It is the schematic which shows an example of the structure of the optical system of the surgical microscope which concerns on 2nd Embodiment. It is the schematic which shows an example of the structure of the optical system of the surgical microscope which concerns on 3rd Embodiment. It is the schematic which shows an example of the structure of the optical system of the surgical microscope which concerns on 4th Embodiment. It is the schematic which shows an example of the structure of the optical system of the surgical microscope which concerns on 5th Embodiment.

An example of an ophthalmic apparatus and an embodiment of an ophthalmic system according to the present invention will be described in detail with reference to the drawings. It should be noted that the description contents of the documents cited in this specification and arbitrary known techniques can be incorporated into the following embodiments.

Hereinafter, as an ophthalmic apparatus for observing the eye to be inspected with binoculars, a surgical microscope capable of observing the eye to be inspected with binoculars will be described as an example. However, the following embodiments are applicable not only to surgical microscopes but also to any ophthalmic device in which the eye to be examined can be observed binocularly.

The ophthalmic system according to the embodiment is used for observing (imaging) a magnified image of an eye to be inspected using a surgical microscope in surgery (or medical treatment) in the field of ophthalmology. The observation target site may be any site in the anterior or posterior eye portion of the operated eye. Examples of the observation target site in the anterior segment include the cornea, the angle, the vitreous body, the crystalline lens, and the ciliary body. Examples of the observation target site in the posterior eye region include the retina (fundus), choroid, and vitreous body. The observation target site may be a peripheral site of the eye such as an eyelid or an orbit.

The surgical microscope according to the embodiment can be configured so that the fundus and anterior segment of the operated eye can be observed by inserting or retracting the lens between the operated eye and the objective lens, for example. ..

The surgical microscope may have a function as another ophthalmic apparatus in addition to a function as a microscope for magnifying and observing the eye to be operated on. For example, as other functions as an ophthalmic apparatus, there are functions such as OCT function, laser treatment, axial length measurement, refractive power measurement, and higher-order aberration measurement. Other ophthalmic devices may have any configuration capable of performing examination, measurement and imaging of the operated eye by an optical technique.

<First Embodiment>
FIG. 1 shows a configuration example of an ophthalmic system according to an embodiment.

The ophthalmic system 1 according to the embodiment includes an operating device 2, a display device 3, and a surgical microscope 10. In some embodiments, the surgical microscope 10 comprises at least one of an operating device 2 and a display device 3.

(Operating device 2)
The operating device 2 includes an operating device or an input device. The operation device 2 includes buttons and switches (for example, operation handles, operation knobs, etc.) and operation devices (mouse, keyboard, etc.). Further, the operation device 2 may include any operation device or input device such as a trackball, an operation panel, a switch, a button, and a dial.

(Display device 3)
The display device 3 displays an image of the operated eye acquired by the surgical microscope 10. The display device 3 includes a display device such as a flat panel display such as an LCD (Liquid Crystal Display). Further, the display device 3 may include various display devices such as a touch panel.

The operating device 2 and the display device 3 do not need to be configured as separate devices. For example, it is possible to use a device such as a touch panel in which an operation function and a display function are integrated. In that case, the operating device 2 includes the touch panel and a computer program. The operation content for the operation device 2 is input to the control unit (not shown) as an electric signal. Further, the graphical user interface (GUI) displayed on the display device 3 and the operation device 2 may be used to perform operations and information input. In some embodiments, the functions of the operating device 2 and the display device 3 are realized by a touch screen.

(Surgery microscope 10)
The surgical microscope 10 is used to observe a magnified image of the operated eye of a patient in the supine position. In some embodiments, the magnified image can be observed by displaying the photographed image of the operated eye on the display device 3. In some embodiments, the magnified image can be observed by directing the return light from the operated eye to an eyepiece (not shown).

In some embodiments, the surgical microscope 10 includes a communication unit for transmitting and receiving electrical signals to and from the operating device 2. The surgical microscope 10 is controlled according to the operation content corresponding to the electric signal input from the operation device 2 via the wired or wireless signal path.

In some embodiments, the surgical microscope 10 includes a communication unit for transmitting and receiving electrical signals to and from the display device 3. The surgical microscope 10 displays an image on the screen of the display device 3 according to the display control content corresponding to the electric signal output to the display device 3 via the wired or wireless signal path.

[Optical system configuration]
In the following, for convenience of explanation, the optical axis direction of the objective lens is the z direction (vertical direction and vertical direction at the time of surgery), the horizontal direction orthogonal to the z direction (horizontal direction at the time of surgery) is the x direction, and the z direction and the x direction. The horizontal direction orthogonal to both of the above is defined as the y direction.

FIG. 2 shows a configuration example of the optical system of the surgical microscope 10 according to the first embodiment. FIG. 2 shows a schematic top view of the optical system viewed from above and a schematic side view of the optical system viewed from the side in association with each other. In order to simplify the illustration, the illustration of the illumination optical system 30 arranged above the objective lens 20 is omitted.

The surgical microscope 10 includes an objective lens 20, a reflection mirror RM1, an optical axis width adjusting member 70, a dichroic mirror DM2, an illumination optical system 30, an observation optical system 40, and an optical axis width changing member 90. .. The observation optical system 40 includes a zoom expander 50 and an image pickup camera 60. In some embodiments, the illumination optics 30 or the observation optics 40 include a dichroic mirror DM2. In some embodiments, the observation optical system 40 includes at least one of an optical axis width adjusting member 70 and an optical axis width changing member 90.

(Objective lens 20)
The objective lens 20 is arranged so as to face the eye to be operated on. The optical axis of the objective lens 20 extends in the z direction. In some embodiments, the objective lens 20 comprises two or more lenses, including a lens arranged to face the eye to be operated on.

(Reflective mirror RM1)
The reflection mirror RM1 reflects the illumination light from the illumination optical system 30 (specifically, the first illumination optical systems 31L and 31R) toward the objective lens 20, and also reflects the return light of the illumination light from the operated eye. It reflects toward the observation optical system 40. A dichroic mirror DM2 is arranged in the optical path of the return light deflected by the reflection mirror RM1.

(Dichroic mirror DM2)
The dichroic mirror DM2 is arranged between the reflection mirror RM1 and the zoom expander 50 of the observation optical system 40. The dichroic mirror DM2 combines the optical path of the illumination optical system 30 (specifically, the first illumination optical systems 31L and 31R) with the optical path of the observation optical system 40. The dichroic mirror DM2 reflects the illumination light from the illumination optical system 30 and guides it to the objective lens 20, and also transmits the return light of the illumination light from the objective lens 20 and guides it to the image pickup camera 60 of the observation optical system 40.

The dichroic mirror DM2 coaxially couples the optical path of the illumination optical system 30 and the optical path of the observation optical system 40. The dichroic mirror DM2 coaxially couples the optical path of the left eye illumination optical system (first illumination optical system 31L) and the optical path of the left eye observation optical system (40L), and has the right eye illumination optical system (first). 1 The optical path of the illumination optical system 31R) and the optical path of the observation optical system for the right eye (40R) are coaxially coupled.

(Illumination optical system 30)
The illumination optical system 30 is an optical system for illuminating the eye to be operated on via the objective lens 20. The illumination optical system 30 can illuminate the operated eye with any of two or more illumination lights having different color temperatures. The illumination optical system 30 illuminates the operated eye with illumination light having a designated color temperature in response to an instruction from a control unit described later.

The illumination optical system 30 according to the embodiment includes the first illumination optical systems 31L and 31R and the second illumination optical system 32.

Each of the optical axes OL and OR of the first illumination optical system 31L and 31R is arranged so as to be substantially coaxial with the optical axis of the objective lens 20. This makes it possible to illuminate the fundus with so-called "0 degree illumination" and acquire a transilluminated image generated by diffuse reflection on the fundus. In this case, it becomes possible to observe the transilluminated image of the operated eye with binocular eyes.

The optical axis OS of the second illumination optical system 32 is arranged so as to be eccentric with respect to the optical axis of the objective lens 20. The first illumination optical system 31L, 31R, and the second illumination optical system 32 are arranged so that the displacement of the optical axis OS with respect to the optical axis of the objective lens 20 is larger than the displacement of the optical axes OL and OR with respect to the optical axis of the objective lens 20. Be placed. As a result, the fundus or anterior eye is illuminated with so-called "angled illumination (oblique illumination)", and the operated eye (transilluminated image) is observed with binoculars while avoiding the influence of ghosts based on reflections from the cornea and the like. Will be possible. In addition, it becomes possible to observe the unevenness of a predetermined portion of the operated eye in detail.

The first illumination optical system 31L includes a light source 31LA and a condenser lens 31LB. The light source 31LA outputs, for example, illumination light having a wavelength in the visible region having a color temperature of 3000 K (Kelvin). The illumination light output from the light source 31LA passes through the condenser lens 31LB, is reflected by the dichroic mirror DM2 toward the reflection mirror RM1, is reflected toward the objective lens 20 by the reflection mirror RM1, and passes through the objective lens 20. It is incident on the operated eye.

The first illumination optical system 31R includes a light source 31RA and a condenser lens 31RB. The light source 31RA also outputs illumination light having a wavelength in the visible region having a color temperature of 3000 K, for example. The illumination light output from the light source 31RA passes through the condenser lens 31RB, is reflected by the dichroic mirror DM2 toward the reflection mirror RM1, is reflected toward the objective lens 20 by the reflection mirror RM1, and passes through the objective lens 20. It is incident on the operated eye.

The second illumination optical system 32 includes a light source 32A and a condenser lens 32B. The light source 32A outputs, for example, illumination light having a wavelength in the visible region having a color temperature of 4000K to 6000K. The illumination light output from the light source 32A passes through the condenser lens 32B, passes through the objective lens 20 without passing through the dichroic mirror DM2 and the reflection mirror RM1, and enters the operated eye.

That is, the color temperature of the illumination light from the first illumination optical systems 31L and 31R is lower than the color temperature of the illumination light from the second illumination optical system 32. As a result, it becomes possible to observe the operated eye in warm colors using the first illumination optical systems 31L and 31R, and it becomes possible to grasp the morphology of the operated eye in detail.

In some embodiments, each of the optical axes OL and OR is movable with respect to the optical axis of the objective lens 20 in a direction (at least one of the x direction and the y direction) intersecting the optical axis of the objective lens 20. be. In some embodiments, the optical axes OL and OR can be moved independently. In some embodiments, the optical axes OL, OR are integrally movable. For example, the surgical microscope 10 includes a moving mechanism (31d) that moves the first illumination optical systems 31L and 31R independently or integrally, and the moving mechanism moves the first illumination optical systems 31L and 31R independently or integrally. It moves in a direction intersecting the optical axis of the objective lens 20. As a result, it becomes possible to adjust the visibility of the operated eye. In some embodiments, the moving mechanism is controlled under the control of a control unit described below.

In some embodiments, the optical axis OS is movable with respect to the optical axis of the objective lens 20 in a direction (at least one of the x and y directions) intersecting the optical axis of the objective lens 20. For example, the surgical microscope 10 includes a moving mechanism (32d) for moving the second illumination optical system 32, and the moving mechanism moves the second illumination optical system 32 in a direction intersecting the optical axis of the objective lens 20. As a result, it becomes possible to adjust the appearance of unevenness at a predetermined portion of the operated eye. In some embodiments, the moving mechanism is controlled under the control of a control unit described below.

As described above, the reflection mirror RM1 is arranged directly above the objective lens 20, and the observation optical system 40 is arranged in a direction substantially orthogonal to the optical axis of the objective lens 20. For example, the observation optical system 40 can be arranged so that the angle formed by the optical axis of the observation optical system 40 and the plane (xy plane) orthogonal to the optical axis of the objective lens 20 is ± 20 degrees or less. ..

As a result, the observation optical system 40, which generally has a longer optical path length than the illumination optical system 30, is arranged so that the optical path length becomes longer in a direction substantially parallel to the xy plane. Therefore, the operator can easily see the screen (or the front situation) of the front display device 3 without arranging the observation optical system 40 in front of the operator. In addition, the housing arranged in front of the operator does not give a feeling of oppression to the operator, and the burden on the operator can be reduced.

(Observation optical system 40)
The observation optical system 40 is an optical system for observing an image formed by the return light of the illumination light incident from the operated eye through the objective lens 20. In this embodiment, the observation optical system 40 returns to the image pickup surface of the image pickup device of the image pickup camera 60 to form an image of light.

The observation optical system 40 includes an observation optical system 40L for the left eye and an observation optical system 40R for the right eye. The configuration of the observation optical system 40L for the left eye is the same as the configuration of the observation optical system 40R for the right eye. In some embodiments, the left-eye observation optical system 40L and the right-eye observation optical system 40R are configured so that the optical arrangement can be changed independently on the left and right sides.

The zoom expander 50 includes a left eye zoom expander 50L and a right eye zoom expander 50R. The configuration of the left eye zoom expander 50L is the same as the configuration of the right eye zoom expander 50R. In some embodiments, the left-eye zoom expander 50L and the right-eye zoom expander 50R are configured so that the left and right optical arrangements can be changed independently.

The left eye zoom expander 50L includes a plurality of zoom lenses 51L, 52L, 53L. Each of the plurality of zoom lenses 51L, 52L, and 53L can be moved in the optical axis direction by a scaling mechanism (not shown).

The right eye zoom expander 50R includes a plurality of zoom lenses 51R, 52R, 53R. Each of the plurality of zoom lenses 51R, 52R, and 53R can be moved in the optical axis direction by the scaling mechanism.

The scaling mechanism moves each zoom lens of the left eye zoom expander 50L and each zoom lens of the right eye zoom expander 50R independently or integrally in the optical axis direction. As a result, the magnification when the operated eye is photographed is changed. In some embodiments, the scaling mechanism is controlled under the control of a control unit described below.

(Image camera 60)
The image pickup camera 60 is an optical system for photographing an image formed by the return light of the illumination light guided by the observation optical system 40.

The image pickup camera 60 includes a left eye image pickup camera 60L and a right eye image pickup camera 60R. The configuration of the left-eye imaging camera 60L is the same as the configuration of the right-eye imaging camera 60R. In some embodiments, the left-eye imaging camera 60L and the right-eye imaging camera 60R are configured so that the optical arrangement can be changed independently on the left and right sides.

The left-eye image pickup camera 60L includes an image pickup lens 61L and an image pickup element 62L. The imaging lens 61L forms an image of the return light that has passed through the left eye zoom expander 50L on the imaging surface of the imaging element 62L. The image sensor 62L is a two-dimensional area sensor. The image sensor 62L receives control from a control unit described later and outputs an electric signal (detection signal) corresponding to the light reception result.

The right-eye image pickup camera 60R includes an image pickup lens 61R and an image pickup element 62R. The imaging lens 61R forms an image of the return light that has passed through the zoom expander 50R for the right eye on the imaging surface of the imaging element 62R. The image sensor 62R is a two-dimensional area sensor. The image sensor 62R receives control from a control unit described later and outputs an electric signal corresponding to the light reception result.

(Optical axis width adjusting member 70)
The optical axis width adjusting member 70 is arranged in the optical path of the return light of the illumination light between the reflection mirror RM1 and the dichroic mirror DM2. The optical axis width adjusting member 70 is incident on the optical axis (optical axis OL) of the optical path of the return light incident on the observation optical system 40L for the left eye (imaging element 62L) and on the observation optical system 40R (imaging element 62R) for the right eye. Adjust the width of the optical path of the return light to the optical axis (optical axis OR). This width corresponds to the distance in the direction in which the optical axis of the observation optical system 40L for the left eye and the optical axis of the observation optical system 40R for the right eye are aligned. In some embodiments, the observation optical system 40L for the left eye and the observation optical system 40R for the right eye move in conjunction with the adjustment of the width of the optical axis by the optical axis width adjusting member 70.

In some embodiments, the optical axis width adjusting member 70 displaces the optical axis of the optical path of the return light incident on the observation optical system for the left eye 40L in the first direction (for example, the left direction) by the first displacement amount. , The optical axis of the optical path of the return light incident on the observation optical system 40R for the right eye is displaced by the first displacement amount in the second direction (for example, the right direction) opposite to the first direction. In some embodiments, the optical axis width adjusting member 70 shifts the optical axis of the optical path of the return light incident on the observation optical system 40L for the left eye by the first displacement amount in the first direction, and observes the optical for the right eye. The optical axis of the optical path of the return light incident on the system 40R is displaced in the second direction by a second displacement amount different from the first displacement amount. For example, the optical axis width adjusting member 70 positions one of the optical path of the optical path of the return light incident on the observation optical system 40L for the left eye and the optical axis of the optical path of the return light incident on the observation optical system 40R for the right eye. While fixed, the other is displaced in the first or second direction.

The optical axis width adjusting member 70 according to the embodiment includes optical elements 70L and 70R. The optical element 70L is arranged on the optical axis of the optical path of the return light incident on the observation optical system 40L for the left eye, and the position of the optical axis is changed. The optical element 70R is arranged on the optical axis of the optical path of the return light incident on the observation optical system 40R for the right eye, and changes the position of the optical axis.

For example, each of the optical elements 70L and 70R is a parallel flat plate whose incident angle of the return light can be changed. For example, each of the optical elements 70L and 70R is rotatably arranged on the optical axis. In this case, by rotating each of the optical elements 70L and 70R on the optical axis, the optical axis of the optical path of the return light incident on the observation optical system 40L for the left eye and the return incident on the observation optical system 40R for the right eye. It is possible to change the width of the optical path of light with the optical axis.

As shown in FIGS. 3A and 3B, a state in which two parallel planes of the optical elements 70L and 70R are arranged so as to be substantially orthogonal to the optical axis is defined as a reference state. From this reference state, when the optical element 70L is rotated counterclockwise and the optical element 70R is rotated clockwise as shown in FIG. 3A, the widths of the optical axes OL and OR change from W0 to W1 (W1> W0). Similarly, when the optical element 70L is rotated clockwise and the optical element 70R is rotated counterclockwise as shown in FIG. 3B from the reference state, the widths of the optical axes OL and OR change from W0 to W2 (W2 <W0). do.

In some embodiments, each of the optical elements 70L, 70R may be an achromatic wedge prism or a wedge prism rather than a parallel flat plate.

By providing the optical axis width adjusting member 70 as described above, the relative positions of the optical axes OL and OR can be changed, and the widths of the optical axes OL and OR can be adjusted. As a result, by arbitrarily changing the widths of the optical axes OL and OR according to the preference of the surgeon or the like, it becomes possible to observe the operated eye with a stereoscopic effect according to the surgeon or the like. Further, as compared with the case where the optical element is inserted and removed from the optical path, it is not necessary to provide a retracting space for the optical element, and the configuration (size of the housing) of the optical system can be miniaturized. Further, when the operated eye is a small pupil, it is possible to inject illumination light into the eye by adjusting the widths of the optical axes OL and OR, and the operated eye which is a small pupil can be observed three-dimensionally. You will be able to do it.

(Optical axis width changing member 90)
The optical axis width changing member 90 is arranged in the optical path of the return light of the illumination light between the zoom expander 50 and the image pickup camera 60. The optical axis width changing member 90 is incident on the optical axis (optical axis OL) of the optical path of the return light incident on the observation optical system 40L for the left eye (imaging element 62L) and on the observation optical system 40R (imaging element 62R) for the right eye. The width of the optical path of the return light is changed from that of the optical axis (optical axis OR). This width corresponds to the distance in the direction in which the optical axis of the observation optical system 40L for the left eye and the optical axis of the observation optical system 40R for the right eye are aligned.

In some embodiments, the optical axis width changing member 90 displaces the optical axis of the optical path of the return light incident on the observation optical system 40L for the left eye in the first direction (for example, the left direction) by a third displacement amount. , The optical axis of the optical path of the return light incident on the observation optical system 40R for the right eye is displaced by the third displacement amount in the second direction (for example, the right direction) opposite to the first direction. In some embodiments, the optical axis width changing member 90 shifts the optical axis of the optical path of the return light incident on the observation optical system 40L for the left eye by a third displacement amount in the first direction, and observes the optical for the right eye. The optical axis of the optical path of the return light incident on the system 40R is displaced in the second direction by a fourth displacement amount different from the third displacement amount. For example, the optical axis width changing member 90 positions one of the optical path of the optical path of the return light incident on the observation optical system 40L for the left eye and the optical axis of the optical path of the return light incident on the observation optical system 40R for the right eye. While fixed, the other is displaced in the first or second direction.

The optical axis width changing member 90 according to the embodiment includes optical elements 90L and 90R. The optical element 90L is arranged on the optical axis of the optical path of the return light incident on the left eye imaging camera 60L, and the position of the optical axis is changed. The optical element 90R is arranged on the optical axis of the optical path of the return light incident on the right-eye imaging camera 60R, and changes the position of the optical axis.

For example, each of the optical elements 90L and 90R is a diamond prism. In this case, the incident surface of the diamond prism as the optical element 90L is arranged so as to be substantially orthogonal to the optical axis of the observation optical system for the left eye 40L. Further, the incident surface of the diamond prism as the optical element 90R is arranged so as to be substantially orthogonal to the optical axis of the observation optical system 40R for the right eye. As a result, the position of each optical axis is changed as shown in FIG.

By providing the optical axis width changing member 90 as described above, the relative positions of the optical axes OL and OR can be changed, and the widths of the optical axes OL and OR can be changed. As a result, even when the size of the image pickup camera having the desired performance is large, the left eye image pickup camera 60L and the right eye image pickup camera 60R can be arranged at predetermined intervals.

[Control system configuration]
FIG. 4 shows a configuration example of the control system of the surgical microscope 10 according to the first embodiment. In FIG. 4, the same parts as those in FIGS. 1 or 2 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

As shown in FIG. 4, the control system of the surgical microscope 10 is configured around the control unit 200. That is, the control unit 200 controls each part of the surgical microscope 10 (or the ophthalmic system 1).

(Control unit 200)
The control unit 200 executes various controls. The control unit 200 includes a main control unit 201 and a storage unit 202.

(Main control unit 201)
The main control unit 201 includes a processor and controls each unit of the surgical microscope 10 (or ophthalmic system 1).

In the present specification, the "processor" is, for example, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an ASIC (Application Specific Integrated Circuit), a programmable logic device (for example, a SPLD (Simple Program)). It means a circuit such as Programmable Logic Device), FPGA (Field Programmable Gate Array)). The processor realizes the function according to the embodiment by reading and executing, for example, a program stored in a storage circuit (storage unit 202) or a storage device.

For example, the main control unit 201 includes light sources 31LA, 31RA, 32A of the illumination optical system 30, image sensors 62L, 62R of the observation optical system 40, moving mechanisms 31d, 32d, 70d, scaling mechanisms 50Ld, 50Rd, and an operating device 2. The display device 3 and the like are controlled.

The control of the light source 31LA includes turning on and off the light source, adjusting the amount of light, adjusting the aperture, and the like. The control of the light source 31RA includes turning on and off the light source, adjusting the amount of light, adjusting the aperture, and the like. The main control unit 201 performs exclusive control on the light sources 31LA and 31RA. Control of the light source 32A includes turning on / off the light source, adjusting the amount of light, adjusting the aperture, and the like.

When the illumination optical system 30 includes a light source whose color temperature can be changed, the main control unit 201 can output illumination light having a desired color temperature by controlling the light source.

Control of the image sensor 62L includes exposure adjustment, gain adjustment, shooting rate adjustment, and the like. Control of the image sensor 62R includes exposure adjustment, gain adjustment, shooting rate adjustment, and the like. Further, the main control unit 201 can control the image pickup elements 62L and 62R so that the imaging timings of the image pickup elements 62L and 62R match, or the difference between the imaging timings of the two image pickup elements 62L and 62R is within a predetermined time. be. Further, the main control unit 201 can control the reading of the light receiving result in the image pickup devices 62L and 62R.

The moving mechanism 31d moves the light sources 31LA and 31RA independently or integrally in a direction intersecting the optical axis of the objective lens 20. By controlling the moving mechanism 31d, the main control unit 201 can move the optical axes OL and OR independently or integrally with respect to the optical axis of the objective lens 20.

The moving mechanism 32d moves the light source 32A independently or integrally in a direction intersecting the optical axis of the objective lens 20. By controlling the moving mechanism 32d, the main control unit 201 can move the optical axis OS with respect to the optical axis of the objective lens 20.

In some embodiments, the moving mechanisms 31d, 32d are configured to work together. In this case, the main control unit 201 can move the other by controlling one of the moving mechanisms 31d and 32d.

The moving mechanism 70d rotates each of the optical elements 70L and 70R on the optical axis (see FIGS. 3A and 3B). The moving mechanism 70d rotates the optical elements 70L and 70R in opposite directions by the same amount of rotation. The function of such a moving mechanism 70d is realized by using, for example, two pairs of miter gears configured by combining a plurality of bevel gears. The main control unit 201 can change the widths of the optical axes OL and OR by controlling the moving mechanism 70d. In some embodiments, the main control unit 201 controls the moving mechanism 70d based on the operation content for the operating device 2. In some embodiments, the main control unit 201 controls the movement mechanism 70d based on the analysis result of the anterior segment image of the operated eye. For example, when it is determined that the eye to be operated on is a small pupil eye based on the analysis result of the anterior segment image, the main control unit 201 controls the movement mechanism 70d and changes the widths of the optical axes OL and OR. Is possible.

In some embodiments, the main control unit 201 can set the optical elements 70L, 70R to the reference states shown in FIGS. 3A and 3B by controlling the moving mechanism 70d. For example, the main control unit 201 sets the optical elements 70L and 70R to the reference states shown in FIGS. 3A and 3B by controlling the moving mechanism 70d based on the operation content for the operating device 2. As a result, by constantly rotating the optical elements 70L and 70R from the reference state, it is possible to eliminate the deviation in the adjustment of the stereoscopic effect.

The scaling mechanism 50Ld moves at least one of the plurality of zoom lenses 51L to 53L of the left eye zoom expander 50L in the optical axis direction. By controlling the scaling mechanism 50Ld, the main control unit 201 moves at least one of the plurality of zoom lenses 51L to 53L of the left eye zoom expander 50L in the optical axis direction of the left eye observation optical system 40L. It is possible.

The scaling mechanism 50Rd moves at least one of the plurality of zoom lenses 51R to 53R of the zoom expander 50R for the right eye in the optical axis direction. By controlling the scaling mechanism 50Rd, the main control unit 201 moves at least one of the plurality of zoom lenses 51R to 53R of the right eye zoom expander 50R in the optical axis direction of the right eye observation optical system 40R. It is possible.

Controls for the operation device 2 include operation permission control, operation prohibition control, and reception control of operation contents for the operation device 2. By receiving the electric signal corresponding to the operation content received from the operation device 2, the main control unit 201 can control each part of the surgical microscope 10 (or the ophthalmic system 1) according to the operation content for the operation device 2. Is.

Controls for the display device 3 include display control of various types of information. As a display control unit, the main control unit 201 may read out the light receiving results of the image pickup devices 62L and 62R to form an image of the operated eye, and display the formed image of the operated eye on the screen of the display device 3. It is possible.

Further, the main control unit 201, as a display control unit, reads out the light receiving results of the image pickup elements 62L and 62R to form an image for the left eye and an image for the right eye of the operated eye, and the left side of the formed eye to be operated. It is possible to display the eye image and the right eye image on the screen of the display device 3 in a stereoscopic manner. For example, two disparity images for the right eye and the left eye of an observer such as an operator are formed from an image for the left eye and an image for the right eye of the operated eye, and the formed two disparity images are used by the observer. Have the left eye and the right eye present each.

The surgeon can visually recognize the operated eye in three dimensions by observing the image of the operated eye with the naked eye or observing the image of the operated eye through polarized glasses by a known method. be.

The optical axis (optical axis OL) of the optical path of the return light incident on the observation optical system 40L for the left eye (image sensor 62L) is an example of the “first optical axis” according to the embodiment. This is an example of the “second optical axis” according to the embodiment of the optical axis (optical axis OR) of the optical path of the return light incident on the observation optical system 40R (image sensor 62R) for the right eye. The optical element 70L is an example of the "first optical element" according to the embodiment. The optical element 70R is an example of the "second optical element" according to the embodiment. The optical element 90L is an example of the "first diamond prism" according to the embodiment. The optical element 90R is an example of the "second diamond prism" according to the embodiment. The image sensor 62L is an example of the “left eye image sensor” according to the embodiment. The image sensor 62R is an example of the “right eye image sensor” according to the embodiment. The reflection mirror RM1 is an example of the "deflection member" according to the embodiment. The control unit 200 or the main control unit 201 is an example of the "display control unit" according to the embodiment. The display device 3 is an example of the "display means" according to the embodiment.

As described above, according to the first embodiment, the observation optical system 40 is arranged in the reflection direction of the reflection mirror RM1 located above the objective lens 20. Generally, since the optical path length of the observation optical system 40 is longer than the optical path length of the illumination optical system 30, the observation optical system 40 is not arranged in front of the operator, and the empty space above the operated eye is increased. be able to. As a result, the surgeon can easily see the screen of the front display device 3. In addition, the housing arranged in front of the operator does not give a feeling of oppression to the operator, and the burden on the operator can be reduced.

Further, by providing the optical axis width adjusting member 70, the relative positions of the optical axes OL and OR can be changed, and the widths of the optical axes OL and OR can be adjusted. As a result, by arbitrarily changing the widths of the optical axes OL and OR according to the preference of the surgeon or the like, it becomes possible to observe the operated eye with a stereoscopic effect according to the surgeon or the like. Further, as compared with the case where the optical element is inserted and removed from the optical path, it is not necessary to provide a retracting space for the optical element, and the configuration (size of the housing) of the optical system can be miniaturized. Further, when the operated eye is a small pupil, it is possible to inject illumination light into the eye by adjusting the widths of the optical axes OL and OR, and the operated eye which is a small pupil can be observed three-dimensionally. You will be able to do it.

Further, by providing the optical axis width changing member 90, the relative positions of the optical axes OL and OR can be changed, and the widths of the optical axes OL and OR can be changed. As a result, even when the size of the image pickup camera having the desired performance is large, the left eye image pickup camera 60L and the right eye image pickup camera 60R can be arranged at predetermined intervals.

<Second Embodiment>
The configuration of the surgical microscope according to the embodiment is not limited to the configuration according to the first embodiment. In the second embodiment, each of the optical elements 90L and 90R of the optical axis width changing member 90 is a parallel flat plate. Hereinafter, the configuration according to the second embodiment will be described focusing on the differences from the first embodiment.

FIG. 5 shows a configuration example of the optical system of the surgical microscope 10a according to the second embodiment. In FIG. 5, the same parts as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

In the ophthalmic system 1 shown in FIG. 1, the surgical microscope 10a according to the second embodiment can be applied instead of the surgical microscope 10.

The configuration of the surgical microscope 10a according to the second embodiment is different from the configuration of the surgical microscope 10 according to the first embodiment in that the optical elements 90L and 90R are provided with parallel flat plates instead of the diamond prism. Is.

In the parallel flat plate as the optical element 90L, the incident surface is arranged obliquely with respect to the optical axis of the return light of the illumination light incident on the image pickup element 62L. In the parallel flat plate as the optical element 90R, the incident surface is arranged obliquely with respect to the optical axis of the return light of the illumination light incident on the image pickup element 62R.

The control system of the surgical microscope 10a according to the second embodiment is the same as the control system of the surgical microscope 10 according to the first embodiment.

The parallel flat plate as the optical element 90L is an example of the "first parallel flat plate" according to the embodiment. The parallel flat plate as the optical element 90R is an example of the "second parallel flat plate" according to the embodiment.

As described above, according to the second embodiment, by providing the optical axis width changing member 90, the relative positions of the optical axes OL and OR are changed, and as in the first embodiment, the optical axes OL and OR The width can be changed. As a result, even when the size of the image pickup camera having the desired performance is large, the left eye image pickup camera 60L and the right eye image pickup camera 60R can be arranged at predetermined intervals.

<Third Embodiment>
The configuration of the surgical microscope according to the embodiment is not limited to the configuration according to the above embodiment. The third embodiment has a configuration in which the optical axis width changing member 90 is omitted from the configuration of the first embodiment or the second embodiment. Hereinafter, the configuration according to the third embodiment will be described focusing on the differences from the first embodiment.

FIG. 6 shows a configuration example of the optical system of the surgical microscope 10b according to the third embodiment. In FIG. 6, the same parts as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

In the ophthalmic system 1 shown in FIG. 1, the surgical microscope 10b according to the third embodiment can be applied instead of the surgical microscope 10.

The configuration of the surgical microscope 10b according to the third embodiment is different from the configuration of the surgical microscope 10 according to the first embodiment in that the optical axis width changing member 90 is omitted.

The control system of the surgical microscope 10b according to the third embodiment is the same as the control system of the surgical microscope 10 according to the first embodiment.

As described above, according to the third embodiment, by providing the optical axis width adjusting member 70, the relative positions of the optical axes OL and OR are changed, and as in the first embodiment, the optical axes OL and OR The width can be adjusted. As a result, by arbitrarily changing the widths of the optical axes OL and OR according to the preference of the surgeon or the like, it becomes possible to observe the operated eye with a stereoscopic effect according to the surgeon or the like. Further, as compared with the case where the optical element is inserted and removed from the optical path, it is not necessary to provide a retracting space for the optical element, and the configuration (size of the housing) of the optical system can be miniaturized. Further, when the operated eye is a small pupil, it is possible to inject illumination light into the eye by adjusting the widths of the optical axes OL and OR, and the operated eye which is a small pupil can be observed three-dimensionally. You will be able to do it.

<Fourth Embodiment>
The configuration of the surgical microscope according to the embodiment is not limited to the configuration according to the above embodiment. The fourth embodiment has a configuration in which the optical axis width adjusting member 70 is omitted from the configuration of the first embodiment or the second embodiment. Hereinafter, the configuration according to the fourth embodiment will be described focusing on the differences from the first embodiment.

FIG. 7 shows a configuration example of the optical system of the surgical microscope 10c according to the fourth embodiment. In FIG. 7, the same parts as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

In the ophthalmic system 1 shown in FIG. 1, the surgical microscope 10c according to the fourth embodiment can be applied instead of the surgical microscope 10.

The configuration of the surgical microscope 10c according to the fourth embodiment is different from the configuration of the surgical microscope 10 according to the first embodiment in that the optical axis width adjusting member 70 is omitted.

The control system of the surgical microscope 10c according to the fourth embodiment is the same as that of the first embodiment except that the control system for the moving mechanism 70d is omitted from the control system of the surgical microscope 10 according to the first embodiment. The same is true.

As described above, according to the fourth embodiment, by providing the optical axis width changing member 90, the relative positions of the optical axes OL and OR are changed, and as in the first embodiment, the optical axes OL and OR The width can be changed. As a result, even when the size of the image pickup camera having the desired performance is large, the left eye image pickup camera 60L and the right eye image pickup camera 60R can be arranged at predetermined intervals.

<Fifth Embodiment>
The configuration of the surgical microscope according to the embodiment is not limited to the configuration according to the above embodiment. In the fifth embodiment, the operator or an assistant can observe the operated eye with the naked eye through the eyepiece. Hereinafter, the configuration according to the fifth embodiment will be described focusing on the differences from the first embodiment. The fifth embodiment can be applied to each of the first to fourth embodiments.

FIG. 8 shows a configuration example of the optical system of the surgical microscope 10d according to the fifth embodiment. In FIG. 8, the same parts as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

In the ophthalmic system 1 shown in FIG. 1, the surgical microscope 10d according to the fifth embodiment can be applied instead of the surgical microscope 10.

The configuration of the surgical microscope 10d according to the fifth embodiment is different from the configuration of the surgical microscope 10 according to the first embodiment in that the observation optical system 40 includes the eyepiece lens system 63.

The eyepiece system 63 includes an eyepiece system 63L for the left eye and an eyepiece system 63R for the right eye. The configuration of the left eye eyepiece system 63L is the same as the configuration of the right eye eyepiece system 63R. The optical path of the left eye eyepiece system 63L is coaxially coupled with the optical path of the left eye observation optical system 40L. The optical path of the right eye eyepiece system 63R is coaxially coupled to the optical path of the right eye observation optical system 40R.

A beam splitter BSL is arranged between the left eye zoom expander 50L and the left eye imaging camera 60L. In FIG. 8, the beam splitter BSL is arranged between the left eye zoom expander 50L and the optical element 90L. In some embodiments, the beam splitter BSL is located between the optical element 90L and the left eye imaging camera 60L. The left eye eyepiece system 63L is arranged in the reflection direction of the beam splitter BSL. The left eye imaging camera 60L is arranged in the transmission direction of the beam splitter BSL. The beam splitter BSL coaxially couples the optical path of the left eye eyepiece system 63L and the optical path of the left eye imaging camera 60L.

The left eye eyepiece system 63L includes an imaging lens 64L and an eyepiece lens 65L. The return light of the illumination light guided through the optical path of the left eye observation optical system 40L is guided to the left eye imaging camera 60L and the left eye eyepiece system 63L by the beam splitter BSL. The return light incident on the left eye eyepiece system 63L passes through the imaging lens 64L and is guided to the eyepiece lens 65L.

A beam splitter BSR is arranged between the zoom expander 50R for the right eye and the imaging camera 60R for the right eye. In FIG. 8, the beam splitter BSR is arranged between the right eye zoom expander 50R and the optical element 90R. In some embodiments, the beam splitter BSR is located between the optical element 90R and the right eye imaging camera 60R. The eyepiece system 63R for the right eye is arranged in the reflection direction of the beam splitter BSR. The right eye imaging camera 60R is arranged in the transmission direction of the beam splitter BSR. The beam splitter BSR coaxially couples the optical path of the right eye eyepiece system 63R and the optical path of the right eye imaging camera 60R.

The right eye eyepiece system 63R includes an imaging lens 64R and an eyepiece lens 65R. The return light of the illumination light guided through the optical path of the observation optical system 40R for the right eye is guided to the image pickup camera 60R for the right eye and the eyepiece system 63R for the right eye by the beam splitter BSR. The return light incident on the right eye eyepiece system 63R passes through the imaging lens 64R and is guided to the eyepiece lens 65R.

The control system of the surgical microscope 10d according to the fifth embodiment is the same as the control system of the surgical microscope 10 according to the first embodiment.

As described above, according to the fifth embodiment, the surgeon or the assistant can obtain the same effect as that of the first embodiment while checking the operated eye with the naked eye.

[effect]
The effects of the ophthalmic apparatus and the ophthalmic system according to the embodiment will be described.

The ophthalmic devices (surgical microscopes 10, 10a, 10b, 10c, 10d) according to some embodiments include an objective lens (20), a first illumination optical system (30L, 30R), and an observation optical system for the left eye. (40L), an observation optical system for the right eye (40R), and an optical axis width adjusting member (70) are included. The first illumination optical system is configured to be able to irradiate the eye to be inspected (the eye to be operated on) with the first illumination light via the objective lens. The observation optical system for the left eye guides the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the left eye (eyepiece 65L) or the imaging element for the left eye (imaging element 62L). Is configured to be possible. The observation optical system for the right eye guides the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the right eye (eyepiece 65R) or the imaging element for the right eye (imaging element 62R). Is configured to be possible. The optical axis width adjusting member includes the first optical axis (optical axis OL) of the return light of the first illumination light incident on the observation optical system for the left eye and the return light of the first illumination light incident on the observation optical system for the right eye. The width with the second optical axis (optical axis OR) of the above can be adjusted.

According to such a configuration, the relative positions of the first optical axis and the second optical axis are changed, and the width between the first optical axis and the second optical axis can be adjusted with a simple configuration. As a result, the width of the first optical axis and the second optical axis can be arbitrarily changed according to the preference of the observer, so that the eye to be examined can be observed with a stereoscopic effect according to the observer. Further, when the eye to be inspected has a small pupil, it is possible to inject illumination light into the eye by adjusting the width between the first optical axis and the second optical axis, and the eye to be inspected having the small pupil is three-dimensional. You will be able to observe the image.

In some embodiments, the optical axis width adjusting member displaces the first optical axis in the first direction by the first displacement amount, and displaces the second optical axis in the second direction opposite to the first direction. Displace by the amount.

With such a configuration, the position of the optical axis can be adjusted evenly on the left and right sides of the observer, and it becomes easy to observe the eye to be inspected with a stereoscopic effect according to the observer's preference.

In some embodiments, the optical axis width adjusting member is arranged on the first optical axis and has a first optical element (optical element 70L) capable of changing the position of the first optical axis and a second optical axis. Includes a second optical element (optical element 70R) that is arranged and capable of changing the position of the second optical axis.

According to such a configuration, it is possible to simplify the configuration of an ophthalmic apparatus capable of observing the eye to be inspected with a stereoscopic effect according to the preference of the observer.

In some embodiments, each of the first and second optics is a parallel plane plate capable of varying the angle of incidence of the return light.

According to such a configuration, as compared with the case where the optical element is inserted and removed from the optical path, the evacuation space of the optical element becomes unnecessary, and the configuration (size of the housing) of the optical system can be miniaturized. ..

Some embodiments include an optical axis width changing member (90) that changes the width of the first optical axis and the second optical axis adjusted by the optical axis width adjusting member.

According to such a configuration, the relative positions of the first optical axis and the second optical axis are changed, and the widths of the first optical axis and the second optical axis can be changed. As a result, even when the size of the image pickup camera having the desired performance is large, the left eye image pickup camera and the right eye image pickup camera can be arranged at predetermined intervals.

The ophthalmic devices (surgical microscopes 10, 10a, 10b, 10c, 10d) according to some embodiments include an objective lens (20), a first illumination optical system (30L, 30R), and an observation optical system for the left eye. (40L), an observation optical system for the right eye (40R), and an optical axis width changing member (90) are included. The first illumination optical system is configured to be able to irradiate the eye to be inspected (the eye to be operated on) with the first illumination light via the objective lens. The observation optical system for the left eye guides the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the left eye (eyepiece 65L) or the imaging element for the left eye (imaging element 62L). Is configured to be possible. The observation optical system for the right eye guides the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the right eye (eyepiece 65R) or the imaging element for the right eye (imaging element 62R). Is configured to be possible. The optical axis width changing member changes the width between the optical axis of the return light of the first illumination light incident on the image pickup element for the left eye and the optical axis of the return light of the first illumination light incident on the image pickup element for the right eye. ..

According to such a configuration, the relative positions of the first optical axis and the second optical axis are changed, and the widths of the first optical axis and the second optical axis can be changed with a simple configuration. As a result, even when the size of the image pickup camera having the desired performance is large, the left eye image pickup camera and the right eye image pickup camera can be arranged at predetermined intervals.

In some embodiments, the optical axis width changing member is arranged such that the incident surface is substantially orthogonal to the first optical axis of the return light of the first illumination light incident on the left eye imaging element. A diamond-shaped prism (optical element 90L) and a second diamond-shaped prism (optical element) arranged so that the incident surface is substantially orthogonal to the second optical axis of the return light of the first illumination light incident on the image pickup element for the right eye. 90R) and.

According to such a configuration, the relative positions of the first optical axis and the second optical axis can be changed, and the widths of the first optical axis and the second optical axis can be changed with a simple configuration.

In some embodiments, the optical axis width changing member is a first parallel flat plate in which the incident surface is arranged obliquely with respect to the first optical axis of the return light of the first illumination light incident on the left eye imaging element. (Optical element 90L), a second parallel flat plate (optical element 90R) in which the incident surface is obliquely arranged with respect to the second optical axis of the return light of the first illumination light incident on the image pickup element for the right eye. including.

According to such a configuration, the relative positions of the first optical axis and the second optical axis can be changed, and the widths of the first optical axis and the second optical axis can be changed with a simple configuration.

In some embodiments, the second illumination is arranged so as to be eccentric with respect to the optical axis of the objective lens, and the second illumination light having a color temperature different from that of the first illumination light can be irradiated to the eye to be inspected through the objective lens. Includes optical system (32). The observation optical system for the left eye is configured to be able to guide the return light of the second illumination light to the eyepiece for the left eye or the image pickup element for the left eye. The observation optical system for the right eye is configured to be able to guide the return light of the second illumination light to the eyepiece for the right eye or the image pickup element for the right eye.

With such a configuration, the observer can observe the eye to be inspected without difficulty while avoiding the influence of the ghost based on the reflection from the cornea or the like.

In some embodiments, a deflecting member that deflects the return light of the illumination light incident through the objective lens in a direction intersecting the optical axis of the objective lens to guide the observation optical system for the left eye and the observation optical system for the right eye. (Reflective mirror RM1) is included.

According to such a configuration, the observation optical system is arranged in the reflection direction of the deflection member in which the return light of the illumination light from the eye to be inspected is incident through the objective lens. As a result, the observer can easily grasp the situation in front of the observer without arranging the observation optical system having a long optical path in front of the observer. Further, the housing arranged in front of the observer does not give a feeling of oppression to the observer, and the burden on the observer can be reduced.

In some embodiments, a means (display device) for displaying an image of the eye to be inspected based on the result of receiving the return light obtained by the image sensor for the left eye and the result of receiving the return light obtained by the image sensor for the right eye. A display control unit (control unit 200, main control unit 201) to be displayed on 3) is included.

According to such a configuration, the observer can easily grasp the image of the eye to be inspected in front of the observer without arranging the observation optical system having a long optical path length in front of the observer.

In some embodiments, the display control unit comprises a left-eye image generated based on the result of receiving the return light obtained by the left-eye image sensor and a return light obtained by the right-eye image sensor. The image for the right eye generated based on the light reception result of the above is displayed on the display means.

According to such a configuration, the observer can easily stereoscopically view the image of the eye to be inspected in front of the observer without arranging the observation optical system having a long optical path length in front of the observer.

The ophthalmic system (1) according to some embodiments includes the ophthalmic apparatus described above and display means.

According to such a configuration, the width of the first optical axis and the second optical axis can be arbitrarily changed according to the preference of the observer, so that the eye to be examined can be observed with a stereoscopic effect according to the observer. A possible ophthalmic system can be provided. Further, when the eye to be inspected has a small pupil, it is possible to inject illumination light into the eye by adjusting the width between the first optical axis and the second optical axis, and the eye to be inspected having the small pupil is three-dimensional. You will be able to observe the image.

The above embodiments are merely examples for carrying out the present invention. A person who intends to carry out the present invention can make arbitrary modifications, omissions, additions, substitutions, etc. within the scope of the gist of the present invention. Hereinafter, the drawings in the above embodiments will be referred to as appropriate.

1 Ophthalmology system 2 Operating device 3 Display device 10, 10a, 10b, 10c, 10d Surgical microscope 20 Objective lens 30 Illumination optical system 31L, 31R 1st illumination optical system 32 2nd illumination optical system 40 Observation optical system 40L For left eye Observation optics 40R Right-eye observation optics 50 Zoom expander 50L Left-eye zoom expander 50R Right-eye zoom expander 60 Imaging camera 60L Left-eye imaging camera 60R Right-eye imaging camera 62L, 62R Imaging element 63 Eyepiece Lens system 63L Left eye eyepiece lens system 63R Right eye eyepiece lens system 70 Optical axis width adjusting member 70L, 70R, 90L, 90R Optical element 90 Optical axis width changing member 200 Control unit 201 Main control unit 202 Storage unit 31d, 32d , 70d moving mechanism 50Ld, 50Rd scaling mechanism BSL, BSR beam splitter DM2 dichroic mirror RM1 reflection mirror

Claims (13)

With the objective lens
A first illumination optical system capable of irradiating the eye to be inspected with the first illumination light via the objective lens,
An observation optical system for the left eye capable of guiding the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the left eye or the imaging element for the left eye.
An observation optical system for the right eye capable of guiding the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the right eye or the imaging element for the right eye.
The width between the first optical axis of the return light of the first illumination light incident on the observation optical system for the left eye and the second optical axis of the return light of the first illumination light incident on the observation optical system for the right eye. Adjustable optical axis width adjustment member,
Ophthalmic equipment including. The optical axis width adjusting member displaces the first optical axis in the first direction by the first displacement amount, and displaces the second optical axis in the second direction opposite to the first direction by the first displacement amount. The ophthalmic apparatus according to claim 1, wherein the device is made to move. The optical axis width adjusting member is
A first optical element arranged on the first optical axis and capable of changing the position of the first optical axis,
A second optical element arranged on the second optical axis and capable of changing the position of the second optical axis,
The ophthalmic apparatus according to claim 1 or 2, wherein the ophthalmic apparatus comprises. The ophthalmic apparatus according to claim 3, wherein each of the first optical element and the second optical element is a parallel flat plate whose incident angle of the return light can be changed. Any one of claims 1 to 4, wherein an optical axis width changing member for changing the width of the first optical axis and the second optical axis adjusted by the optical axis width adjusting member is included. The ophthalmic apparatus described in the section. With the objective lens
A first illumination optical system capable of irradiating the eye to be inspected with the first illumination light via the objective lens,
An observation optical system for the left eye capable of guiding the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the left eye or the imaging element for the left eye.
An observation optical system for the right eye capable of guiding the return light of the first illumination light incident from the eye to be inspected through the objective lens to the eyepiece for the right eye or the imaging element for the right eye.
An optical axis width that changes the width between the optical axis of the return light of the first illumination light incident on the left eye imaging element and the optical axis of the return light of the first illumination light incident on the right eye imaging element. Change member and
Ophthalmic equipment including. The optical axis width changing member is
A first diamond-shaped prism arranged so that the incident surface is substantially orthogonal to the first optical axis of the return light of the first illumination light incident on the left eye imaging element.
A second diamond-shaped prism arranged so that the incident surface is substantially orthogonal to the second optical axis of the return light of the first illumination light incident on the right eye imaging element.
The ophthalmic apparatus according to claim 5 or 6, wherein the ophthalmic apparatus comprises. The optical axis width changing member is
A first parallel flat plate whose incident surface is obliquely arranged with respect to the first optical axis of the return light of the first illumination light incident on the left eye image sensor.
A second parallel flat plate whose incident surface is obliquely arranged with respect to the second optical axis of the return light of the first illumination light incident on the right eye image sensor.
The ophthalmic apparatus according to claim 5 or 6, wherein the ophthalmic apparatus comprises. A second illumination optical system arranged so as to be eccentric with respect to the optical axis of the objective lens and capable of irradiating the eye to be inspected with a second illumination light having a color temperature different from that of the first illumination light through the objective lens. Including
The observation optical system for the left eye is configured so that the return light of the second illumination light can be guided to the eyepiece for the left eye or the imaging element for the left eye.
Claims 1 to claim that the observation optical system for the right eye is configured to be able to guide the return light of the second illumination light to the eyepiece for the right eye or the image pickup element for the right eye. Item 8. The ophthalmic apparatus according to any one of items 8. Includes a deflecting member that deflects the return light of the illumination light incident through the objective lens in a direction intersecting the optical axis of the objective lens to guide the observation optical system for the left eye and the observation optical system for the right eye. The ophthalmic apparatus according to any one of claims 1 to 9, wherein the ophthalmic apparatus is characterized. Display control for displaying the image of the eye to be inspected on the display means based on the light reception result of the return light obtained by the left eye image sensor and the light reception result of the return light obtained by the right eye image sensor. The ophthalmic apparatus according to any one of claims 1 to 10, wherein the ophthalmic apparatus comprises a part. The display control unit has a left eye image generated based on the light reception result of the return light obtained by the left eye image sensor, and a light reception result of the return light obtained by the right eye image sensor. The ophthalmic apparatus according to claim 11, wherein the display means displays the image for the right eye generated based on the above. The ophthalmic apparatus according to claim 11 or 12.
With the display means
Ophthalmic system including.

Images