JPH0578202U - Ophthalmic equipment - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide an ophthalmologic apparatus capable of externally grasping an optical member that is inserted into and removed from an optical path. According to the present invention, there is provided an ophthalmologic apparatus including an optical member operating unit 12 for forming an optical path to an eye of a subject and selectively inserting and removing an arbitrary number of optical members with respect to the optical path. A display means 16 is provided for individually displaying different optical members corresponding to the respective optical members inserted in the optical path in association with the operation of the member operation unit 12. With this configuration, the optical member selectively inserted into the optical path in the ophthalmologic apparatus can be grasped by color from the outside, and appropriate ophthalmologic diagnosis can be performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an ophthalmologic apparatus, and more particularly, to an ophthalmologic apparatus including various filters as optical members that are selectively inserted into and removed from an optical path formed by the ophthalmic apparatus.

[0002]

[Prior Art]

 For example, in a fundus camera, which is a type of ophthalmologic apparatus, various filters are selectively inserted into and removed from the optical path when performing fluorescence imaging of the eye of a subject.

Further, such various filters are adapted to operate in conjunction with the operation of a knob provided on the outer wall portion of the fundus camera.

Meanwhile, some conventional fundus cameras are provided with a light emitting display section such as an LED near the knob to indicate the position of the above-mentioned knob, and are used when the fundus camera is used in a dark place. For your convenience.

[0005]

[Problems to be solved by the device]

 However, the location of the above-mentioned conventional fundus camera and the light emitting display section only show the position of the knob until it has a monochromatic structure, and just looking at this light emitting display section, the inside of the optical path linked to the knob is There is a problem that it is difficult to determine the type of filter.

Further, conventionally, in the state where another filter is inserted in the optical path of the fundus camera instead of the filter which should be originally inserted, or the eye is not inserted into the optical path. There is also a problem that a situation such as photographing occurs, and an excessive amount of light is irradiated on the subject's eye in such a place, which may adversely affect the eye or cause a misdiagnosis.

[0007] Furthermore, if a photograph is taken with the erroneous filter being inserted as described above, there is a problem that the film is wasted and the developing time is wasted.

Therefore, the present invention is an ophthalmologic apparatus capable of appropriately grasping each of an arbitrary number of optical members inserted into an optical path and avoiding adverse effects on the eye, waste of film, and the like, and performing an appropriate ophthalmic diagnosis. It is intended to provide.

[0009]

[Means for Solving the Problems]

 The present invention relates to an ophthalmologic apparatus including an optical member operating section for forming an optical path to an eye of a subject and selectively inserting and removing an arbitrary number of optical members with respect to the optical path. A display means is provided for individually displaying different optical members corresponding to the optical members inserted in the optical path in association with the operation.

[0010]

[Action]

 According to the above-described ophthalmologic apparatus, when the optical member operating unit is operated to selectively insert an arbitrary number of optical members into the optical path, the display means operates in conjunction with the operation of the optical member operating unit. Display different colors for each member. As a result, each optical member inserted in the optical path can be identified simply by visually recognizing the display unit.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail.

FIG. 1 shows a fundus camera which is an example of an ophthalmologic apparatus.

The fundus camera 1 has a structure in which a support mechanism section 3 that can be displaced on the table is provided on a flat table 2, and a box-shaped device body 4 is installed on the support mechanism section 3. ing.

An objective lens barrel 5 facing the eye of the subject M is attached to the left end side of the device body 4 in FIG. 1, and the eye is observed on the right end side of the device body 4. An observation tube 6 and a still camera 7 for photographing the eyes are attached. An optical path L (illumination optical path and photographing optical path) not shown in the figure for guiding a light beam from the light source to the subject's eye and a light beam from the subject's eye to the still camera 7 is provided in the apparatus body 4.

A TV camera 30 is further attached to the apparatus body 4, and a memory 31 and a display 32 are connected to the TV camera 30.

Further, as will be described later, three optical members, for example, an infrared cut filter 8, a visible fluorescence filter 9, and an infrared fluorescence filter 10 are selectively inserted into and removed from the optical path L. It has become.

The visible fluorescence filter includes a visible fluorescence exciter filter and a visible fluorescence barrier filter, each of which can be provided with a display. A visible fluorescence exciter filter is used in the illumination light path, and a visible fluorescence barrier filter is used in the photographing light path.

As shown in FIG. 2, an optical member operating unit 12 is provided in a range from the outside of one side wall plate of the apparatus body 4 to the vicinity of the optical path L. The optical member operating unit 12 includes an operation knob 13 rotatably attached to the side wall plate, a rotary shaft 14 attached to the operation knob 13, and a filter support disk attached to a protruding end portion of the rotary shaft 14. 15, the infrared cut filter 8, the visible fluorescent filter 9, and the infrared fluorescent filter 10 are attached to the outer peripheral portion of the filter supporting disk 15 at predetermined intervals in the radial direction thereof. With this configuration, the infrared cut filter 8, the visible fluorescence filter 9, and the infrared fluorescence filter 10 are selectively inserted into and removed from the optical path L by rotating the operation knob 13.

A display indicating that each infrared cut filter 8, visible fluorescence filter 9, and infrared fluorescence filter 10 are inserted in the optical path L for each color near the operation knob 13 and inside the side wall plate. Means 16 are provided.

The display means 16 comprises a display cylinder 17 arranged near the operation knob 13 and a changeover switch section 18 arranged inside the side wall plate, and the display cylinder 17 is shown in FIG. As shown in the drawing, first to third LEDs (Light Emittering Diodes) 19a, 19b and 19c which respectively emit yellow, blue and red lights are incorporated. In FIG. 3, 17a is a transparent glass provided on the protruding end surface of the display cylinder 17.

As shown in FIG. 2, the changeover switch section 18 has a circuit board 20 arranged so that the rotary shaft 14 penetrates through the circuit board 20, and the infrared cut filters 8, visible fluorescence filters 9, First to third contact points 21, 22, 23 provided at intervals corresponding to the infrared fluorescent filter 10, a switch disk 24 made of a conductor fixed to the rotating shaft 14, and the switch disk 24 to An operating piece 25 made of a conductor is provided so as to project so as to come into contact with each of the contacts 21, 22, 23.

Next, the circuit system of the changeover switch section 18 and the first to third LEDs 19a, 19b, 19c will be described with reference to FIG.

In this circuit system, the operation piece 25 is connected to the anode of the power supply 26, and one terminal of each of the first to third LEDs 19a, 19b, 19c is commonly connected to the cathode of the power supply 26. , The other terminal of the first LED 19a is connected to the first contact 21, the other terminal of the second LED 19b is connected to the second contact 22, and the other terminal of the third LED 19c is connected to the third contact. Each is connected to the contact 23.

Next, the operation of the fundus camera 1 having the above-described configuration is performed by inserting and removing the infrared cut filter 8, the visible fluorescent filter 9, and the infrared fluorescent filter 10 into and out of the optical path L, and the LEDs 19a, 19b, and The display mode of 19c will be mainly described.

When an operator (inspector) of the fundus camera 1 operates the operation knob 13 to insert the infrared cut filter 8 into the optical path L, the operation piece 25 corresponds to the infrared cut filter 8. Contacts the first contact 21. As a result, a closed circuit including the power supply 26, the operation piece 25, the first contact 21, the first LED 19a, and the power supply 26 is formed, and the infrared cut filter 8 of the first LED in the display cylinder 17 serves as the optical path L. Lights up in yellow to indicate that it is inside. Thereby, the operator can recognize that the infrared cut filter 8 is in the optical path L.

Similarly, when the visible fluorescent filter 9 is inserted in the optical path L, the second LED 19 b emits blue light, and when the infrared fluorescent filter 10 is inserted in the optical path L, the third LED 19 c is red. Since the light is emitted by, the operator can immediately recognize these states by looking at the display cylinder 17.

In addition to the case described above, it is possible to provide the auxiliary lens operation unit for selectively inserting and removing the auxiliary lens for photographing in the optical path L with the same display means as in the case described above.

Further, instead of providing the LED in the display cylinder 17, it is possible to make the light emission of the LED visible through a viewfinder in the still camera 7.

Further, the changeover operation of the changeover switch section 18 is interlocked with the screen display of the display 32 via the TV camera 30, and the infrared cut filter 8 inserted in the optical path L, as shown in FIG. The names of the visible fluorescence filter (visible fluorescence exciter filter, visible fluorescence barrier filter) 9 and infrared fluorescence filter 10 can be displayed on the screen.

The present invention can be modified in various ways within the scope of the invention in addition to the embodiments described above.

[0031]

[Effect of the device]

 According to the present invention described in detail above, when an arbitrary number of optical members are selectively inserted in the optical path, the display means displays different colors corresponding to the corresponding optical members. The inserted optical member can be immediately recognized from the outside, and thereby, it is possible to provide an ophthalmologic apparatus capable of performing an appropriate ophthalmologic diagnosis while avoiding adverse effects on the eye, waste of film, and the like.

[Brief description of drawings]

FIG. 1 is a side view of a fundus camera according to an embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view of a fundus camera which is an embodiment of the present invention.

FIG. 3 is an enlarged sectional view of a display tube of a fundus camera according to an embodiment of the present invention.

FIG. 4 is a circuit diagram of a changeover switch unit and first to third LEDs of this embodiment.

FIG. 5 is a plan view showing a display example of the display of this embodiment.

[Explanation of symbols]

 1 fundus camera 4 device body 8 infrared cut filter 9 visible fluorescence filter 10 infrared fluorescence filter 12 optical member operation unit 16 display means L optical path M subject

Claims (1)

[Scope of utility model registration request] 1. An ophthalmologic apparatus comprising an optical member operating section for forming an optical path to a subject's eye and selectively inserting and removing an arbitrary number of optical members to and from the optical path. An ophthalmologic apparatus comprising display means for individually displaying different optical members corresponding to respective optical members inserted in the optical path in association with the operation of.