JPH10314119A - Ophthalmological device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ophthalmological device by which a light source, its power or a control part are made into a unit and the unit is easily exchanged in accordance with a purpose. SOLUTION: The ophthalmological device is provided with a stroboscopic light source 17 emitting projection light to an examined eye 1, a power unit 19 supplying power to the stroboscopic light source 17, a control unit 18 controlling the light quantity of the stroboscopic light source 17 or the power quantity of the power unit 19, a light guide optical system guiding projection light emitted by the stroboscopic light source 17 to the examined eye 1 and an observation optical system observing the examined eye 1 and is constituted by containing the guide optical system and the observation optical system inside a device mainbody 10. The stroboscopic light source 17 and at least one of the power unit 19 and the control unit 18 are made into a unit so as to form an illumination light source unit 16 and the unit 16 is made to be freely attachable/ detachable as against the device mainbody 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmic apparatus such as a slit lamp microscope and a fundus camera, and more particularly to an ophthalmic apparatus having features around its light source.

[0002]

2. Description of the Related Art Today, ophthalmologists and the like widely use ophthalmic devices such as a slit lamp microscope and a fundus camera. The purpose of the ophthalmologic apparatus is various, for example, observing the eye to be examined, irradiating the affected part of the eye with the laser beam to burn out the affected part, or photographing the eye to be examined. Among such conventional ophthalmologic devices, for example, some slit lamp microscopes have been devised to simplify the configuration. In this system, an observation light source, a power source, and a control unit are built in the apparatus main body, while only a photographing light source is configured to be detachable from the apparatus main body, and the photographing light source can be attached only during photographing. In such an ophthalmic apparatus, the configuration is simplified because the imaging body does not have a built-in imaging light source, and the imaging light source is useless when the imaging is not performed even if the imaging light source is incorporated. It is possible to solve such a problem that the data becomes unreadable.

[0003]

However, in such a conventional ophthalmic apparatus, only the light source for photographing is simply detachable from the main body of the apparatus. A control unit for controlling the light source for photographing needs to be built in the apparatus main body in advance. Therefore, when photographing is not performed, the power supply and the control unit for the photographing light source may be wasted, which leads to an increase in the cost of the apparatus, which may impose an unnecessary burden on the user. Was. In particular, the provision of these useless functions in a hand-held ophthalmologic apparatus contradicts the need for reducing the weight of the apparatus, and thus an improvement has been demanded.

[0004] The present invention has been made in view of such problems in the conventional ophthalmologic apparatus, and has a light source and a power supply or a control unit as a unit, and the unit can be easily replaced according to the purpose. It is intended to provide.

[0005]

In order to achieve the above object, according to the present invention, there is provided a light source for emitting light projected onto an eye to be examined, a power supply for supplying power to the light source, and a light source for the light source. Control means for controlling the amount of light or the amount of power of the power supply, a light guiding optical system for guiding projection light emitted from the light source to the eye to be inspected, and an observation optical system for observing the eye to be inspected. In an ophthalmologic apparatus, the light guide optical system and the observation optical system are housed in an apparatus main body, and the light source and at least one of the power supply or the control unit are unitized to form an illumination light source unit. The illumination light source unit is configured to be detachable from the apparatus main body.

The present invention according to claim 2 is based on claim 1.
In the present invention described above, a plurality of the illumination light source units having different types of light sources are provided detachably with respect to the apparatus main body.

Further, according to a third aspect of the present invention, in the first or second aspect of the present invention, a photographing means for photographing the eye to be inspected is provided in the apparatus main body, and the photographing means is provided through the light guiding optical system. A photographing light source unit having a photographing light source for projecting photographing light to the eye to be inspected is provided, and the photographing light source unit is detachably attached to the apparatus main body,
The illumination light source unit is detachably attached to the imaging light source unit, and power is supplied to the imaging light source by the power source of the illumination light source unit mounted on the imaging light source unit, and the illumination light source unit is The control means controls the light amount of the imaging light source or the power amount of the power supply.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing an ophthalmologic apparatus according to an embodiment of the present invention, FIGS. 2 and 3 are block diagrams showing a state in which units of the ophthalmologic apparatus in FIG. 1 are replaced, and FIGS. FIG. In FIG. 1, an ophthalmologic apparatus is a hand-held fundus observation apparatus, and has a device body 10 having a substantially T-shaped side surface, and a halogen light source unit as an illumination light source unit attached to a lower part of a hand-held portion 10a of the device body 10. 16.

As shown in FIG. 1, an objective lens 11, a variable power optical system 12, and an eyepiece 13
An observation optical system for observing the subject's eye 1 comprising: a condenser lens group 14 and a reflection lens 15; and a light guiding optical system for guiding light from a halogen lamp 17 to be described later to the subject's eye 1. . Under this configuration, illumination light from a halogen lamp 17 to be described later passes through the condenser lens group 14 and is guided to the subject's eye 1 side by the reflection mirror 15, and the objective lens 1
The eye 1 to be examined is illuminated via the light source 1. The examiner 20 observes the virtual image 40 through the variable power optical system 12 and the eyepiece 13.

On the other hand, as shown in FIG. 1, the halogen light source unit 16 contains a halogen lamp 17 as a light source, a control unit 18 as a control means, and a power supply unit 19 as a power supply. The halogen lamp 17 is a light source for emitting illumination light for illuminating the subject's eye 1. The power supply unit 19 is for supplying power to the halogen lamp 17.
Have only the capacity required to supply power to the The control unit 18 controls the power supplied from the power supply unit 19 to the halogen lamp 17 and adjusts the amount of projection light emitted from the halogen lamp 17. The control unit 18 controls the power of the power supply unit 19 and controls the halogen lamp 1.
7 has only the capability necessary to adjust the amount of projection light emitted from

The halogen lamp 17, the control unit 18 and the power supply unit 19 are housed substantially integrally in one housing to form a unit, and a halogen light source unit 16 is formed. ing. As the mounting structure of the halogen light source unit 16 to the apparatus main body 10, any mounting structure that makes the halogen light source unit 16 detachable may be adopted, and an example is shown in FIGS.

As shown in FIG. 4, a linking piece 41 is provided below the hand-held portion 10a of the apparatus main body 10, and the linking piece 41 is urged by a spring 42, and the linking piece 41 is urged by the urging force. The lower end of 41 is pressed toward the halogen light source unit 16 side. On the other hand, the halogen light source unit 16 is located at a position substantially corresponding to the lower end of the linking piece 41 and the linking piece 4
1, a linking hole 43 is formed in a shape substantially corresponding to the lower end of the connecting piece 41. The lower end of the linking piece 41 is locked in the linking hole 43,
A halogen light source unit 16 is attached to the apparatus main body 10. Further, as shown in FIG. 5, when the examiner presses the linking piece 41 in a direction against the bias of the spring 42, the engagement between the linking hole 43 and the lower end of the linking piece 41 is released, and the halogen light source is released. The unit 16 can be removed from the apparatus main body 10.

As shown in FIG. 1, with the halogen light source unit 16 mounted on the lower end of the hand-held portion 10a of the apparatus main body 10, the halogen lamp 17 is arranged on the optical axis of the light guide optical system. The projection light emitted from illuminates the subject's eye 1 via the condenser lens group 14 and the reflection mirror 15. That is, in a state where the halogen light source unit 16 is mounted on the apparatus main body 10, the hand-held portion 10a
The apparatus main body 10 and the halogen light source unit 16 are in optical communication with each other through an opening (not shown) formed in the lower end and the upper surface of the halogen light source unit 16.

FIG. 2 is a view showing a state in which a laser light source unit 21 having a laser light source 22 as a light source is attached to the apparatus main body 10 of FIG. 2, the laser light source unit 21 includes a laser light source 22, a control unit 23, and a power supply unit 24.

The laser light source 22 is a light source for irradiating the affected part of the subject's eye 1 with laser light to burn out the affected part. The power supply unit 24 is for supplying power to the laser light source 22 and has only a capacity necessary for supplying power to the laser light source 22. The control unit 23 controls the power supplied from the power supply unit 24 to the laser light source 22 and adjusts the amount of projection light emitted from the laser light source 22. The control unit 23 includes the power supply unit 2
4 has only the necessary capability to control the power and to adjust the amount of projection light emitted from the laser light source 22.

The laser light source unit 21, like the halogen light source unit 16, is formed by unitizing the laser light source 22, the control unit 23, and the power supply unit 24 substantially integrally in one housing.
It is detachable from the apparatus main body 10. Then, in a state where the laser light source unit 21 is attached to the apparatus main body 10, the projection light emitted from the laser light source 22 is applied to the affected part of the subject's eye 1 via the condenser lens group 14 and the reflection mirror 15, and the affected part is irradiated. Burn out.

In FIG. 3, a halogen light source unit 25 is mounted on the apparatus main body 10 of FIG. 1 in place of the halogen light source unit 16, a strobe light source unit 28 as a photographing light source unit, and a photographing device unit 31 as a photographing means.
Shows a state in which is attached. As shown in FIG. 3, the halogen light source unit 25 contains a halogen lamp 17, a control unit 26, and a power supply unit 27. The power supply unit 27 supplies power to the halogen lamp 17 and a strobe light source 29 to be described later.
9 has only the capacity needed to power it. The control unit 26 controls the power supplied from the power supply unit 27 to the halogen lamp 17 and the strobe light source 29 to adjust the amount of projection light emitted from the halogen lamp 17 and the strobe light source 29. The control unit 26 includes the power supply unit 2
7 has only the capability necessary to control the power of the projector 7 and to adjust the amount of projection light emitted from the halogen lamp 17 and the strobe light source 29.

The strobe light source unit 28 contains a strobe light source 29 and a condenser lens 30. The strobe light source 29 is a light source for irradiating the subject's eye 1 with strobe light for photographing. This strobe light source unit 2
Like the halogen light source unit 16, the strobe light source 8 and the strobe light source 29 and the condensing lens 30 are unitized substantially in a single housing.

On the other hand, the photographing device unit 31 includes a condenser lens 32 and a photographing CCD 33 therein.
Is a unit for realizing the photographing of the subject.
The photographing is performed by guiding to the photographing CCD 33 through the.

Here, a mounting structure similar to that shown in FIGS. 4 and 5 is provided between the apparatus main body 10 and the strobe light source unit 28 and between the strobe light source unit 28 and the halogen light source unit 25. The strobe light source unit 28 is attachable to the apparatus main body 10, and the halogen light source unit 25 is attachable to the strobe light source unit 28.

Openings (not shown) are formed in the upper and lower surfaces of the strobe light source unit 28, and the halogen lamp 17 of the halogen light source unit 28 is optically connected to the optical system in the apparatus main body 10 through the openings. Are in communication. That is, the projection light from the halogen lamp 17 passes through the condenser lens 30 and the strobe light source 29 of the strobe light source unit 28, and passes through the condenser lens group 14 and the reflection mirror 15 of the apparatus main body 10, and the virtual image 40 of the eye 1 to be inspected. To illuminate. Although not shown, the lower surface of the strobe light source unit 28 and the upper surface of the halogen light source unit 25
Electrical contacts that are connected to each other are provided, and control signals and power can be supplied and received through the contacts.

As described above, in the ophthalmologic apparatus of the present embodiment, the halogen light source unit 1 is
6, 25, the laser light source unit 21, the strobe light source unit 28, and the photographing device unit 31 can be selectively mounted and used according to the application.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea. Therefore, these different modes will be described below. First, in the above-described embodiment, the case where the ophthalmologic apparatus is a hand-held fundus observation apparatus has been described. However, the present invention can be similarly applied to an ophthalmologic apparatus other than a hand-held type and an ophthalmologic apparatus other than the fundus observation apparatus.

It is not always necessary to house both the power supply and the control unit in the unit. For example, the power supply may be supplied via a power cord provided in the apparatus main body, and only the control unit may be housed in the unit. Also, the light source housed in the unit is not limited to the halogen light source 17 or the laser light source 22, but may be any light source applied to the ophthalmic apparatus. The control units 18, 23, 2
6 and the power supply units 19, 24, and 27 are not limited to those having the above functions, and have different functions depending on the light source. Although the halogen light source units 16 and 25 and the laser light source unit 21 each have a dedicated control unit and power supply unit, both the control unit and the power supply unit do not necessarily have to be housed in the unit. For example, the power supply unit may be capable of supplying power to one or both of the halogen light source 17 and the laser light source 22 and may be housed in the apparatus body 10.

The mounting position of the unit and the apparatus main body 10 is not limited to the position of the above-described embodiment. However, when the unit is mounted on the lower part of the hand-held portion 10a as in the above-described embodiment, the center of gravity of the entire apparatus is lowered. Positioning and stability are improved. Also, for example, the weight of the device main body 10 above the hand-held portion 10a,
By mutually balancing the weights of the units, the entire apparatus can be held in a well-balanced manner. Further, by making the bottom surface of the unit wider to some extent and flattening it, if the device is placed on a desk or the like via this bottom surface, the unit functions as a pedestal of the device, and the device is stabilized through the unit. Can be placed.

When the unit is heavy, a plurality of the above-described mounting structures may be provided in order to improve the mounting strength to the apparatus main body 10. Also, in this case, one linking piece 41 is linked to each mounting structure, and one linking piece 4
A plurality of attachment structures may be released simply by pressing 1. The ophthalmologic apparatus in the above embodiment is
Although the type of observing the subject's eye with the naked eye was shown,
The present invention can also be applied to a fundus camera of a type including a CCD for observation and performing observation through a monitor or the like.

[0027]

As described above, according to the first aspect of the present invention, the light guide optical system and the observation optical system are housed in the apparatus main body, and at least one of the light source and the power supply or control means is provided. By forming the illumination light source unit as a unit and making the illumination light source unit detachable from the apparatus main body, the apparatus main body is provided with only the minimum functions required in common for various purposes. As a result, the configuration of the apparatus main body can be simplified, and the cost can be reduced. For example, when photographing is not performed, it is not necessary to include not only the light source for photographing but also a power supply and a control unit for the light source for photographing in the apparatus main body.

Further, according to the second aspect of the present invention, a plurality of illumination light source units having light sources of different types are provided detachably with respect to the apparatus main body, so that only a minimum necessary function according to the application is provided. Can be selectively mounted on the apparatus main body, and since the illumination light source is unitized, it can be easily attached and detached and the light source can be easily changed.

According to a third aspect of the present invention, a photographing means for photographing the subject's eye is provided in the apparatus main body, and a photographing light source for projecting photographing light to the subject's eye via a light guide optical system is provided. A photographing light source unit is provided, and the photographing light source unit is detachable from the apparatus main body, and the illumination light source unit is detachable from the photographing light source unit. Power is supplied to the light source, and the control means of the illumination light source unit controls the amount of light of the imaging light source or the amount of power of the power supply. The imaging optical system unit is used only when imaging is performed by an ophthalmologic apparatus. In the case of simply observing without wearing the camera, it can be removed, and the ophthalmologic apparatus can be configured more simply.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an ophthalmologic apparatus showing a state where a halogen light source unit is mounted on an apparatus main body.

FIG. 2 is a configuration diagram of an ophthalmologic apparatus showing a state in which a laser light source unit is mounted on the main body of FIG. 1 instead of a halogen light source unit.

FIG. 3 is a configuration diagram of an ophthalmologic apparatus showing a state in which different halogen light source units, strobe light source units, and photographing apparatus units are mounted on the apparatus main body of FIG. 1;

FIG. 4 is an explanatory diagram showing a mounting state by the mechanism for explaining a mounting / removing mechanism for the unit in FIG. 1;

FIG. 5 is an explanatory view showing a detached state by the mechanism for explaining a mounting / removing mechanism for the unit of FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 eye to be examined 10 device main body 10a hand-held part 11 objective lens 12 variable power optical system 13 eyepiece 14 condensing lens group 15 reflection lens 16, 25 halogen light source unit 17 halogen lamp 18, 23, 26 control unit 19, 24, 27 power supply Unit 20 Examiner 21 Laser light source unit 22 Laser light source 25 Strobe light source unit 29 Strobe light source 30 Condensing lens 31 Imaging device unit 32 Condensing lens 33 Photographing CCD 34 Half mirror 40 Virtual image

Claims (3)

[Claims] A light source for emitting projection light to an eye to be inspected; a power supply for supplying power to the light source; a control unit for controlling a light amount of the light source or a power amount of the power supply; In an ophthalmologic apparatus including a light guide optical system for guiding projection light to the eye to be inspected, and an observation optical system for observing the eye to be inspected, the light guide optical system and the observation optical system are housed in a main body of the apparatus. The light source and at least one of the power supply or the control unit are unitized to form an illumination light source unit,
An ophthalmologic apparatus, wherein the illumination light source unit is detachable from the apparatus main body. 2. The ophthalmologic apparatus according to claim 1, wherein a plurality of said light source units having different types of light sources are detachably provided to said apparatus main body. 3. An imaging light source unit having an imaging means for imaging the eye to be inspected provided in the apparatus main body, and having an imaging light source for projecting imaging light to the eye to be inspected through the light guiding optical system. The photographing light source unit is detachable from the apparatus main body, and the illumination light source unit is detachable from the photographing light source unit, and the power source of the illumination light source unit mounted on the photographing light source unit is used. The power supply to the photographing light source, and the control unit of the illumination light source unit controls the light amount of the photographing light source or the power amount of the power supply. 2. The ophthalmic apparatus according to 2.